TWI678013B - 以有機硫物種為主之電池 - Google Patents
以有機硫物種為主之電池 Download PDFInfo
- Publication number
- TWI678013B TWI678013B TW107104292A TW107104292A TWI678013B TW I678013 B TWI678013 B TW I678013B TW 107104292 A TW107104292 A TW 107104292A TW 107104292 A TW107104292 A TW 107104292A TW I678013 B TWI678013 B TW I678013B
- Authority
- TW
- Taiwan
- Prior art keywords
- lithium
- cathode
- organic
- battery
- anode
- Prior art date
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- 125000001741 organic sulfur group Chemical group 0.000 claims abstract description 40
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- 239000011245 gel electrolyte Substances 0.000 claims abstract description 9
- 239000011244 liquid electrolyte Substances 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 49
- 239000000203 mixture Substances 0.000 claims description 35
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 30
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 27
- 239000005077 polysulfide Substances 0.000 claims description 26
- 229920001021 polysulfide Polymers 0.000 claims description 26
- 150000008117 polysulfides Polymers 0.000 claims description 26
- 229910052708 sodium Inorganic materials 0.000 claims description 18
- 239000011734 sodium Substances 0.000 claims description 18
- 150000003839 salts Chemical class 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 14
- -1 thiophosphonate Chemical compound 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 9
- 239000006183 anode active material Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 7
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 239000003880 polar aprotic solvent Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000006182 cathode active material Substances 0.000 claims description 5
- 229910052798 chalcogen Inorganic materials 0.000 claims description 5
- 150000001787 chalcogens Chemical class 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- HDFRDWFLWVCOGP-UHFFFAOYSA-M sulfanylformate Chemical compound [O-]C(S)=O HDFRDWFLWVCOGP-UHFFFAOYSA-M 0.000 claims description 4
- HIZCIEIDIFGZSS-UHFFFAOYSA-L trithiocarbonate Chemical compound [S-]C([S-])=S HIZCIEIDIFGZSS-UHFFFAOYSA-L 0.000 claims description 4
- BGPJLYIFDLICMR-UHFFFAOYSA-N 1,4,2,3-dioxadithiolan-5-one Chemical compound O=C1OSSO1 BGPJLYIFDLICMR-UHFFFAOYSA-N 0.000 claims description 3
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 claims description 3
- 150000008111 thiosulfinates Chemical class 0.000 claims description 3
- GWIKYPMLNBTJHR-UHFFFAOYSA-M thiosulfonate group Chemical group S(=S)(=O)[O-] GWIKYPMLNBTJHR-UHFFFAOYSA-M 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims description 2
- 239000012989 trithiocarbonate Substances 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 abstract description 27
- 239000011593 sulfur Substances 0.000 abstract description 25
- 150000008116 organic polysulfides Chemical class 0.000 abstract description 12
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 abstract description 11
- 241000894007 species Species 0.000 description 53
- 239000000243 solution Substances 0.000 description 17
- 210000004027 cell Anatomy 0.000 description 16
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229920006295 polythiol Polymers 0.000 description 14
- 239000000126 substance Substances 0.000 description 14
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 14
- 239000003792 electrolyte Substances 0.000 description 11
- 239000008151 electrolyte solution Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 125000001453 quaternary ammonium group Chemical group 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 125000005496 phosphonium group Chemical group 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- MDVNNUUMIBZGCQ-UHFFFAOYSA-N [Li].C(CCCCCCCCCCC)S Chemical compound [Li].C(CCCCCCCCCCC)S MDVNNUUMIBZGCQ-UHFFFAOYSA-N 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 239000002482 conductive additive Substances 0.000 description 4
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 4
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229910018091 Li 2 S Inorganic materials 0.000 description 3
- 229910000733 Li alloy Inorganic materials 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Chemical class 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 150000004252 dithioacetals Chemical class 0.000 description 3
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001989 lithium alloy Substances 0.000 description 3
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 description 3
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- AVQQQNCBBIEMEU-UHFFFAOYSA-N 1,1,3,3-tetramethylurea Chemical compound CN(C)C(=O)N(C)C AVQQQNCBBIEMEU-UHFFFAOYSA-N 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- ZNOVTXRBGFNYRX-UHFFFAOYSA-N 2-[[4-[(2-amino-5-methyl-4-oxo-1,6,7,8-tetrahydropteridin-6-yl)methylamino]benzoyl]amino]pentanedioic acid Chemical compound C1NC=2NC(N)=NC(=O)C=2N(C)C1CNC1=CC=C(C(=O)NC(CCC(O)=O)C(O)=O)C=C1 ZNOVTXRBGFNYRX-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910017008 AsF 6 Inorganic materials 0.000 description 2
- 229910020366 ClO 4 Inorganic materials 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910003003 Li-S Inorganic materials 0.000 description 2
- 229910001216 Li2S Inorganic materials 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 210000001787 dendrite Anatomy 0.000 description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 150000004662 dithiols Chemical class 0.000 description 2
- 239000011262 electrochemically active material Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 238000004895 liquid chromatography mass spectrometry Methods 0.000 description 2
- CETVQRFGPOGIQJ-UHFFFAOYSA-N lithium;hexane Chemical compound [Li+].CCCCC[CH2-] CETVQRFGPOGIQJ-UHFFFAOYSA-N 0.000 description 2
- 125000002524 organometallic group Chemical group 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Chemical group 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- VXTWQLLUXWBOGW-UHFFFAOYSA-N 1,2,4,5-Tetrathiane Chemical compound C1SSCSS1 VXTWQLLUXWBOGW-UHFFFAOYSA-N 0.000 description 1
- GAYUSSOCODCSNF-UHFFFAOYSA-N 1-(dodecyldisulfanyl)dodecane Chemical group CCCCCCCCCCCCSSCCCCCCCCCCCC GAYUSSOCODCSNF-UHFFFAOYSA-N 0.000 description 1
- CSJDJKUYRKSIDY-UHFFFAOYSA-N 1-sulfanylpropane-1-sulfonic acid Chemical compound CCC(S)S(O)(=O)=O CSJDJKUYRKSIDY-UHFFFAOYSA-N 0.000 description 1
- HCZMHWVFVZAHCR-UHFFFAOYSA-N 2-[2-(2-sulfanylethoxy)ethoxy]ethanethiol Chemical compound SCCOCCOCCS HCZMHWVFVZAHCR-UHFFFAOYSA-N 0.000 description 1
- DUIPSSGFPNDNGH-UHFFFAOYSA-N 2-methyl-2-(prop-1-enylamino)propane-1-sulfonic acid Chemical compound CC=CNC(C)(C)CS(O)(=O)=O DUIPSSGFPNDNGH-UHFFFAOYSA-N 0.000 description 1
- UYBPFKOKBLMDPV-UHFFFAOYSA-N 3,3,6,6-tetramethyl-1,2,4,5-tetrathiane Chemical compound CC1(C)SSC(C)(C)SS1 UYBPFKOKBLMDPV-UHFFFAOYSA-N 0.000 description 1
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 1
- 229910000873 Beta-alumina solid electrolyte Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000269333 Caudata Species 0.000 description 1
- PMPVIKIVABFJJI-UHFFFAOYSA-N Cyclobutane Chemical compound C1CCC1 PMPVIKIVABFJJI-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 239000002200 LIPON - lithium phosphorus oxynitride Substances 0.000 description 1
- 229910000502 Li-aluminosilicate Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 229910000528 Na alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- IPLCZXJSAIDLRI-UHFFFAOYSA-N [Ge]=S.[Li] Chemical compound [Ge]=S.[Li] IPLCZXJSAIDLRI-UHFFFAOYSA-N 0.000 description 1
- FDLZQPXZHIFURF-UHFFFAOYSA-N [O-2].[Ti+4].[Li+] Chemical compound [O-2].[Ti+4].[Li+] FDLZQPXZHIFURF-UHFFFAOYSA-N 0.000 description 1
- CNWYIDPCKBEXIV-UHFFFAOYSA-N [S-2].[Li+].[Al+3].[S-2] Chemical compound [S-2].[Li+].[Al+3].[S-2] CNWYIDPCKBEXIV-UHFFFAOYSA-N 0.000 description 1
- GRSIEAQOBHMYJK-UHFFFAOYSA-N [Si]=S.[Li] Chemical compound [Si]=S.[Li] GRSIEAQOBHMYJK-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- ZNEWHQLOPFWXOF-UHFFFAOYSA-N coenzyme M Chemical compound OS(=O)(=O)CCS ZNEWHQLOPFWXOF-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 125000002228 disulfide group Chemical group 0.000 description 1
- 239000011263 electroactive material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- PGRZNUMMGLLYLC-UHFFFAOYSA-M lithium acetonitrile hydroxide Chemical compound C(C)#N.[OH-].[Li+] PGRZNUMMGLLYLC-UHFFFAOYSA-M 0.000 description 1
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 229910000921 lithium phosphorous sulfides (LPS) Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- JNQQEOHHHGGZCY-UHFFFAOYSA-N lithium;oxygen(2-);tantalum(5+) Chemical compound [Li+].[O-2].[O-2].[O-2].[Ta+5] JNQQEOHHHGGZCY-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229960004635 mesna Drugs 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical class CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002048 multi walled nanotube Substances 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Chemical group 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000002813 thiocarbonyl group Chemical group *C(*)=S 0.000 description 1
- 150000007944 thiolates Chemical class 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
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Abstract
製備了金屬-硫電池,如鋰-硫電池,其製備使用一或多種有機硫物種如有機多硫化物和有機多硫醇鹽作為液體或凝膠電解質溶液的一部分,作為陰極的一部分,和/或作為提供中間隔板元件的官能化的多孔聚合物的一部分。
Description
本發明涉及以下電池,該等電池具有基於鈉、鋰或其混合物或者鈉和/或鋰與一或多種其他金屬的合金或複合材料的陽極,與基於元素硫、硒或元素硫族元素混合物的陰極,該陽極和陰極被隔板元件分隔,導電鹽溶于非水的極性非質子溶劑或聚合物中的液體或凝膠電解質溶液與電極接觸。
電化學電池係用於存儲和提供電能的主要手段。由於電子,運輸和網格存儲應用對能源的需求不斷增加,在未來對具有更強蓄電和傳遞能力的電池的需求將繼續保持。 由於與其他類型的電池相比,鋰離子電池重量輕和高能量存儲能力,自20世紀90年代初鋰離子電池已被廣泛用於可擕式電子應用。然而,目前的鋰離子電池技術並不能滿足大型應用,如網格存儲或行駛距離可與內燃機汽車競爭的電動汽車的高功率和能源需求。因此,科學和技術界廣泛努力繼續識別具有更高能量密度和容量的電池。 鈉-硫和鋰-硫電化學電池提供甚至比鋰離子電池更高的理論能量容量,並且因此繼續作為“下一代”電池系統而引起關注。元素硫到單體硫化物(S2-
)的電化學轉變提供1675 mAh/g的理論容量,相比鋰離子電池的小於300 mAh/g。 鈉-硫電池已經開發和推出作為商用系統。不幸的是,鈉-硫電池通常需要高溫(300°C以上)來工作,並且因此只適合用於大型固定應用。 鋰-硫電化學電池(最初在1950年代後期和1960年代提出的)現在正在開發作為商業電池系統。該等電池提供的理論比能量密度超過2500 Wh/kg (2800 Wh/L)相對於鋰離子的624 Wh/g。Li-S電池所表現出的比能量密度係在250 Wh/kg-350 Wh/kg的範圍內(相比鋰離子電池的100 Wh/g),較低的數值係在充電和放電過程中該等系統的電化學過程的特定功能的結果。考慮到鋰離子電池的實際比能通常是理論值的25%至35%,Li-S系統的最佳實際比能為約780 Wh/g(理論值的30%)。[V.S. Kolosnitsyn, E. Karaseva,美國專利申請2008/0100624 A1] 鋰-硫化學提供了阻礙該等電化學電池發展的大量技術挑戰,特別是不良的放電-充電循環性能。然而,由於鋰-硫電池固有的低重量、低成本和高容量,對於改善鋰-硫系統的性能存在極大的興趣,在過去20年中世界各地許多研究人員進行了大量的工作來解決該等問題。[C. Liang等人在Handbook of Battery Materials 2nd
Ed.[ 電池材料手冊第 2 版 ]
,第14章,第811-840頁(2011);VS Kolosnitsyn等人,J. Power Sources[ 能源期刊 ]2011
, 196, 1478-82 ;
和其參考文獻。] 鋰-硫系統的電池設計通常包括: • 一陽極,其組成為鋰金屬、鋰合金或含有鋰的複合材料。 • 在該陽極和陰極之間的一非反應性但多孔的隔板(通常是聚丙烯或β-氧化鋁)。此隔板的存在導致分隔的陽極電解質液隔室和陰極電解質液隔室。 • 併入黏合劑(常為聚偏二氟乙烯)和導電增強材料(通常是石墨、中孔石墨、多壁碳奈米管、石墨烯)中的一種多孔含硫陰極, • 一電解質,其組成為一極性非質子溶劑和一或多種導電Li鹽[(CF3
SO2
)2
N¯、CF3
SO3
¯、CH3
SO3
¯、ClO4
¯、PF6
¯、AsF6
¯、鹵素等]。在該等電池中所用的溶劑包括鹼性(陽離子錯合)非質子極性溶劑,如環丁碸、二甲亞碸、二甲基乙醯胺、四甲基脲、N
-甲基吡咯啶酮、四乙基磺醯胺、四氫呋喃、甲基-THF、1,3-二氧戊環、二甘醇二甲醚和四乙二醇二甲醚。低極性溶劑係不適合的,由於其導電性差、溶劑化Li+
物種能力差,而質子溶劑與Li金屬發生反應。在鋰-硫電池的固態形式中,該液體溶劑被聚合材料如聚環氧乙烷所取代。 • 通用的集電器和適當的外殼材料。
在金屬-硫電池,特別是鋰-硫電池中使用的有機多硫化物和有機多硫醇鹽的組合物和應用由本發明所提供。該有機多硫化物和有機多硫醇鹽物種用於改善此電化學電池在反復充放電循環過程中的性能。 本發明因此涉及化學能源,該化學能源包括具有一或多個正極(陰極),一或多個負極(陽極)和一電解質介質的電池或蓄電池(battery),其中進行的化學反應涉及硫或多硫化物物種的還原以及反應性金屬物種的氧化。負極包括反應性金屬,如鋰、鈉、鉀或該等金屬與其他材料的合金/複合材料。正極包括硫、有機多硫化物物種,和/或有機多硫化物金屬鹽,以及含有該等物種的基質。電解質基質包括有機溶劑或聚合物、無機或有機多硫化物物種、活性金屬的離子形式的載體和旨在優化電化學性能的其他組分的混合物。 具體而言,本發明涉及有機多硫化物,和其鋰(或鈉、季銨或季鏻)有機硫醇鹽或有機多硫醇鹽類似物作為在陰極和電解質基質中的組分的用途。所述有機硫物種與硫及陰離子型的單硫化物或多硫化物物種化學結合形成有機多硫醇鹽物種,該等物種具有增加的與正極材料和陰極電解質液相的非極性硫組分的親和性。 本發明的一方面提供了一電池,該電池包括: a) 一陽極,其包括一陽極活性材料,該陽極活性材料包括鈉、鋰或者至少一種鈉或鋰與至少一種提供離子的其他金屬的合金或複合材料; b) 一陰極,其包括一陰極活性材料,該陰極活性材料包括元素硫、元素硒或元素硫族元素的混合物;以及 c) 放置在該陽極和該陰極之間的一中間隔板元件,該隔板元件用於分離與該陽極和該陰極接觸的液體或凝膠電解質溶液,在該電池的充電和放電循環過程中在該陽極和該陰極之間的金屬離子和相對離子通過該隔板元件移動; 其中該液體或凝膠電解質溶液包括一非水的極性非質子溶劑或聚合物以及一導電鹽並且滿足條件 (i)、(ii) 或 (iii) 中的至少一個: (i) 該液體或凝膠電解質溶液中的至少一種另外包括至少一種有機硫物種; (ii) 該陰極另外包括至少一種有機硫物種; (iii) 該中間隔板元件包括一含有至少一種有機硫物種的官能化的多孔聚合物; 其中該有機硫物種包括至少一個有機部分和至少一個–S-Sn
-鍵,其中n係1或更大的整數。 在一實施方式中,條件 (i)、(ii) 或 (iii) 只有一個得到滿足。在另一實施方式中,所有三個條件都得到滿足。在又一實施方式中,只有兩個條件得到滿足,例如 (i) 和 (ii)、(i) 和 (iii) 或 (ii) 和 (iii)。 在另一方面,本發明提供了一電解質,其包括至少一種非水的極性非質子溶劑或聚合物,至少一種導電鹽和至少一種有機硫物種,該至少一種有機硫物種包括至少一個有機部分以及至少一個-S-Sn
-鍵,其中n係1或更大的整數。 本發明的另一方面提供了一陰極,其包括:a) 元素硫、元素硒或元素硫族元素的混合物,b) 至少一種導電添加劑,c) 以及至少一種有機硫物種,該有機硫物種包括至少一個有機部分和至少一個-S-Sn
-鍵,n係1或更大的整數。 例如,有機硫物種可以選自有機多硫化物和/或有機多硫醇金屬鹽組成的組中。在本發明的某些實施方式中,該有機硫物種含有選自下組的一或多種含硫官能團,該組由以下各項組成:二硫縮醛、二硫縮酮、三硫代原碳酸酯、硫代磺酸根[-S(O)2
-S-]、硫代亞磺酸根[-S(O)-S-]、硫代羧酸根[-C(O)-S-]、二硫代羧酸根[-C(S)-S-]、硫代磷酸酯、硫代膦酸酯、一硫代碳酸酯、二硫代碳酸酯和三硫代碳酸酯。在其他實施方式中,該有機硫物種可以選自由芳香族多硫化物、聚醚-多硫化物、多硫化物-酸式鹽及其混合物組成的組。
實例 陰極製造,電池製備,以及電池測試 實例1 組成為70 wt%的昇華硫元素粉末、20 wt%的聚環氧乙烷(PEO,分子量4 × 106
)、10 wt%的炭黑(Super P®
Conductive, Alfa Aesar)的正電極藉由以下步驟生產: 該等組分的混合物在N
-甲基-2-吡咯啶酮(NMP)中在行星式銑床進行機械研磨。加入乙腈來稀釋混合物。將所得懸浮液用自動薄膜塗布機(Mathis)塗覆到鋁箔(76 µm厚)上。該塗層在真空烘箱中50ºC下乾燥18小時。得到的塗層含有3.10 mg/cm2
的陰極混合物。 實例2 含有正十二烷基硫醇鋰(10 wt%的硫)的正極材料按照實例1中所描述的步驟製備。得到的塗層含有3.4 mg硫/cm2
。 實例3 來自實例2的正極材料在PTFE Swaglok電池中使用,該PTFE Swaglok電池具有兩個不銹鋼棒或不銹鋼(CR2032)製成的硬幣電池組件。該電池單元在氬氣填充的手套箱(MBraun)中如下組裝:將陰極放置在底部,接著放置隔板。然後將電解質溶液加入到隔板。將鋰電極放置在該隔板上。在鋰電極的頂部放置間隔件和彈簧。電池芯用不銹鋼棒或用卷邊機密封。 實例4 按實例3中所描述的方法,在0.1 mA的電流下對電池進行了充放電循環測試,該電池單元的組成為來自實例2(直徑7/16”)的陰極,20 µL的0.5 M的LiTFSI溶於四乙二醇二甲醚(TEGDME):1,3-二氧戊環(DOL)= 1 : 1的溶液,隔板,以及鋰電極(厚度0.38 mm,直徑7/16”)。該測試使用Gamry電位計(Gamry Instruments)截止電壓為1.5 V和3.2 V在室溫下進行測試。放電循環曲線在圖1中示出。 烷基硫醇鋰的合成 實例5-使用己基鋰合成正十二烷基硫醇鋰 在-30ºC下,向正十二烷基硫醇(9.98 g,1當量)的己烷溶液(100 mL)中逐滴加入正己基鋰(33 wt%的己烷溶液,1.1當量)來保持混合物的溫度低於-20ºC。減壓下除去溶劑,以一定量的產率得到白色固體。 實例6-用氫氧化鋰合成正十二烷基硫醇鋰 將正十二烷基硫醇(2.0 g,1當量)和氫氧化鋰一水合物(0.41 g,1當量)的混合物的乙腈(8 mL)溶液加熱到75ºC,並在75ºC下攪拌16小時。冷卻至室溫後,將反應混合物過濾。將濾餅用乙腈沖洗,在真空烘箱中50ºC下乾燥過夜。得到的正十二烷基硫醇鋰為白色固體,產率93.5%(1.93 g) 實例7-使用己基鋰合成正十二烷基硫醇鋰按實例6中所描述的方法,以一定量的產率從二硫醇合成3,6-二氧雜辛烷-1,8-二硫醇二鋰鹽,為白色固體。 烷基多硫醇鋰的合成 實例8-使用氫氧化鋰合成正十二烷基多硫醇鋰向正十二烷基硫醇(2.00 g,1當量)溶於1,3-二氧戊環(25 ml)的氮脫氣的溶液中加入氫氧化鋰一水合物(0.41 g,1當量)和硫(1.27 g,4當量)。在氮氣下室溫攪拌該混合物30 min。得到正十二烷基多硫醇鋰溶於1,3-二氧戊環的深紅色溶液。硫醇向正十二烷基多硫醇鋰的完全轉化由13
C-NMR和LCMS證實。 實例9-使用氫氧化鋰和硫合成3,6-二氧雜辛烷-1,8-多硫醇鋰按實例8中所描述的步驟,3,6-二氧雜辛烷-1,8-多硫醇鋰溶於1,3-二氧戊環的深紅色溶液,是來自3,6-二氧雜辛烷-1,8-二硫醇(0.72 g,1當量)、氫氧化鋰一水合物(0.33 g,2當量)、以及硫(1.02 g,8當量)在1,3-二氧戊環(10 mL)中的反應。 實例10-從烷基硫醇鋰合成正十二烷基多硫醇鋰 向正十二烷基硫醇鋰(0.21 g,1當量)溶於1,3-二氧戊環(5 mL)的氮脫氣的漿體中加入硫(0.13 g,4當量)。在氮氣下室溫攪拌該混合物16小時。藉由過濾除去不溶性固體。藉由LCMS測定,深紅色濾液中含有63%的正十二烷基多硫醇鋰和37%的雙(正十二烷基)多硫化物的混合物。 實例11-使用鋰金屬和硫合成正十二烷基多硫醇鋰 向正十二烷基硫醇(2.23 g,1當量)溶於1,3-二氧戊環(25 mL)的氮脫氣的溶液中加入硫(1.41 g,4當量)和鋰(76.5 mg)。將該混合物加熱到60ºC,並在氮氣下60ºC下攪拌1小時。得到正十二烷基多硫醇鋰溶於1,3-二氧戊環的深紅色溶液。正十二烷基硫醇的完全轉化由13
C-NMR證實。 實例12-使用鋰金屬和硫合成3,6-二氧雜辛烷-1,8-多硫醇鋰 按實例11中所描述的步驟,由3,6-二氧雜辛烷-1,8-二硫醇(1.97g,1當量)、鋰金屬(0.15 g,2當量)、以及硫(2.77 g,8當量)在1,3-二氧戊環(11 mL)中反應,得到3,6-二氧雜辛烷-1,8-多硫醇鋰溶於1,3-二氧戊環的深紅色溶液。初始二硫醇的完全轉化由13
C-NMR證實 實例13-藉由添加正十二烷基多硫醇鋰溶解Li2S 為測定硫化鋰在含有正十二烷基多硫醇鋰的電解液中的溶解度,按如下方法製備硫化鋰的飽和溶液: 按實例10中所描述的步驟製備0.4 M的正十二烷基多硫醇鋰溶於1,3-二氧戊環的溶液。然後用四乙二醇二甲醚將該溶液稀釋至0.2 M,然後將其以1 : 1 = v/v加入到1 M的LiTFSI溶於1 : 1的四乙二醇二甲醚:1,3-二氧戊環的溶液中。向所得的溶液加入硫化鋰,直至獲得一飽和混合物。然後將混合物過濾並且用ICP-MS(Agilent 7700x ICP-MS)分析濾液的溶解鋰。硫化鋰的溶解度基於鋰的水平進行計算。在0.5 M的LiTFSI和0.1 M的正十二烷基多硫醇鋰溶於1 : 1的四乙二醇二甲醚:1,3-二氧戊環的溶液中,測定硫化鋰的溶解度為0.33 wt%。比較而言,如果沒有正十二烷基多硫醇鋰,硫化鋰在0.5 M的LiTFSI中的溶解度僅為0.13 wt%。這清楚地表明瞭當本發明的有機硫存在時,改進了Li2S在電池的電解質基質中的溶解度。
圖1示出了將正C12H25SLi加入到陰極的鋰-硫電池重複充電/放電循環3次至63次的放電特徵曲線(profile)。[ 發明的詳細說明 ]
已被加工成在電池中使用的結構的電活性材料被稱為電極。在電池(作為一化學電能源)中使用的一對電極中,在具有較高電化學電勢的一側的電極被稱為正極或陰極,而在具有較低電化學電勢的一側的電極被稱為負極或陽極。如本文所用,採用傳統的電池命名法,其中術語“陰極”或“正極”和“陽極”或“負極”係指在電池放電提供電能的過程中電極的電化學功能。在循環的充電部分的過程中,電極的實際電化學功能與在放電過程中發生的剛好相反,但各電極的名稱與放電時的名稱保持相同。 電化學電池通常串聯組合,這樣的電池的集合被稱為蓄電池。基於電池中進行的化學反應,原電池組被設計為單次放電來為外部裝置提供動力。二次電池係可再充電的,用來自外部源的電能,並且從而藉由多個放電和充電循環提供延長使用。 在陰極或正極使用的電化學活性材料在下文中被稱為陰極活性材料。在陽極或負極使用的電化學活性材料在下文中被稱為陽極活性材料。具有電化學活性並且包括一電化學活性物質和任選的導電添加劑和黏結劑,以及其他任選的添加劑的多組分組合物在下文中被稱為電極組合物。包含具有處於氧化態的陰極活性材料的陰極和具有處於還原態的陽極活性材料的陽極的電池被稱為是處於已充電狀態。因此,包含具有處於還原態的陰極活性材料的陰極和具有處於氧化態的陽極活性材料的陽極的電池被稱為是處於已放電狀態。 不希望被理論所束縛,以下內容係本發明的某些可能的優點或特徵。有機硫物種可能分配到富硫陰極電解質液相。雙陰離子硫化物或多硫化物(例如,Li2
Sx
,x = 1,2,3…)與有機多硫化物或有機多硫醇鹽(例如,R-Sx
-R’或R-Sx
-Li,R和R’ = 有機部分)之間的化學交換反應,以及多硫化物和多硫醇鹽常見的硫擠出/重新插入的化學反應,有利於最大限度地減少陰極電解質液中的雙陰離子多硫化物的量,且有利於陰極的硫和含硫物種的再沈積。雙陰離子多硫化物的淨去除會降低電解質溶液的黏度,並且從而最大限度地減少高黏度對電解質導電率的有害影響。有機硫物種還可以增加陰極電解質液相和陽極電解質液相中的不溶性低級硫化鋰物種(特別是Li2
S和Li2
S2
)的溶解,並因此將其清除,從而最大限度地減少反復充電/放電循環時活性鋰物種的損失。有機硫物種的性能可藉由選擇有機官能度而“調整”。例如,短鏈烷基或具有較強極性官能度的烷基將更多地分配到陽極電解質液相,而長鏈或較弱極性類似物將更多地分配到陰極電解質液相。調整長/非極性和短/極性鏈的有機物種的相對比例將提供一種控制將含硫物種分配到陰極/陰極電解質液的手段。此外,由於在陽極電解質液中存在一定量的多硫化物或多硫醇鹽作為控制在充電過程中在陽極上的鋰枝晶生長的一種手段是有利的,選擇適當的有機部分和他們的相對比例將提供對枝晶生長的更大控制。 在本發明中使用的有機硫物種包括至少一個有機部分和至少一個-S-Sn
-鍵,其中n係1或更大的整數。在一實施方式中,該有機硫物種的每個分子中包括兩個有機部分(其可以是相同或彼此不同的),其係由-S-Sn
-(多硫化物)鍵連結的(其中n係1或更大的整數)。該-S-Sn
-鍵可形成更大連接基團的一部分,如-Y1
-C(Y2
Y3
)-S-Sn
-鍵或-Y1
-C(=Y4
)-S-Sn
-鍵,其中Y1
係O或S,Y2
和Y3
係獨立地一有機部分或–S-So
-Z,其中o係1或更大,並且Z係一有機部分或選自Li、Na、季銨或季鏻的物種,並且Y4
係O或S。在另一實施方式中,有機硫物種包含一價有機部分和選自Li、Na、季銨或季鏻的物種,該物種係由-S-Sn
-鍵連結的(例如,包括-Y1
-C(Y2
Y3
)-S-Sn
-鍵或-Y1
-C(=Y4
)-S-Sn
-鍵)。在又一實施方式中,-S-Sn
-鍵可在有機部分的任一側上出現。例如,有機部分可以是二價的,任選地取代的芳香族部分C(R3
)2
(每個R3
獨立地為H或有機部分如C1
-C20
有機部分),羰基(C = O)或硫代羰基(C = S)。 例如,有機硫物種可選自有機多硫化物、有機多硫醇鹽、包括具有含硫官能團的那些如二硫縮醛、二硫縮酮、三硫代原碳酸酯、芳香族多硫化物、聚醚-多硫化物、多硫化物-酸式鹽、硫代磺酸根[-S(O)2
-S-]、硫代亞磺酸根[-S(O)-S-]、硫代羧酸根[-C(O)-S-]、二硫代羧酸根[-RC(S)-S-]、硫代磷酸酯或硫代膦酸酯官能度、或一硫代碳酸酯、二硫代碳酸酯和三硫代碳酸酯官能度;含有該等或類似官能度的有機-金屬多硫化物;以及它們的混合物。 例如,合適的有機部分包括一價、二價和多價有機部分,其可以包括支鏈、直鏈和/或環狀烴基。如本文所用,術語“有機部分”除了包括碳和氫外,可包括一或多個雜原子如氧、氮、硫、鹵素、磷、硒、矽、一金屬如錫和類似物的部分。一或多個雜原子可在有機部分以官能團的形式存在。因此,烴基和官能化的烴基基團在本發明的上下文之內被認為是有機部分。在一實施方式中,該有機部分係C1-C20有機部分。在另一實施方式中,該有機部分包含兩個或更多個碳原子。因此該有機部分可以是C2-C20有機部分。 有機硫物種在性質上可以是單體、低聚物或聚合物。例如,-S-Sn-官能度可以懸接(pendant)在低聚物或聚合物物種的主鏈上,該低聚物或聚合物物種的主鏈中含有兩個或更多個單體的重複單元。該-S-Sn-官能度可併入此低聚物或聚合物的主鏈中,使得該低聚物或聚合物主鏈中含有多個-S-Sn-鍵。 例如,有機硫物種可以是具有化學式R1
-S-Sn
-R2
的一有機多硫化物或多種有機多硫化物的混合物,其中R1
和R2
獨立地代表C1-C20有機部分,且n係1或更大的整數。該C1-C20有機部分可以是一價的支鏈、直鏈或環狀烴基。R1
和R2
可以各自獨立地是C9-C14烴基,其中n = 1(前提條件為二硫化物,如三級十二烷基二硫化物)。在另一實施方式中,R1
和R2
各自獨立地是C9-C14烴基,其中n = 2-5(前提條件為多硫化物)。這類化合物的例子包括TPS-32和TPS-20,由Arkema公司出售。在另一實施方式中,R1
和R2
獨立地是C7-C11烴基,其中n = 2-5。由Arkema公司出售的TPS-37LS係此類型的合適的多硫化物的一例子。另一類型的合適的多硫化物係一多硫化物或多種多硫化物的混合物,其中R1
和R2
都是三級丁基且n = 2-5。這類有機硫化合物的例子包括TPS-44和TPS-54,由Arkema公司出售。 有機硫物種也可以是具有化學式R1
-S-Sn
-M的有機多硫醇鹽,其中R1
係C1-C20有機部分,M為鋰、鈉、季銨或季鏻,且n係1或更大的整數。 在另一實施方式中,有機硫物種可以是二硫縮醛或二硫縮酮如對應於化學式 (I) 和 (II) 的那些,或具有化學式 (III) 的三硫代原羧酸酯:其中每個R3
獨立地是H或C1-C20有機部分,o、p和q各自獨立地為1或更大的整數,並且每個Z獨立地是C1-C20有機部分、鋰、鈉、季銨或季鏻。這類有機硫物種的例子包括1,2,4,5-四噻烷(化學式I,R3
= H,o = p = 1),四甲基-1,2,4,5-四噻烷(化學式I,R3
= CH3,o = p = 1),和其低聚或聚合物物種。 本發明的另一實施方式利用有機硫物種,其係具有化學式 (IV) 的芳香族多硫化物、具有化學式 (V) 的聚醚-多硫化物,具有化學式 (VI) 的多硫化物-酸式鹽,或具有化學式 (VII) 的多硫化物-酸式鹽:其中R4
獨立地是三級丁基或三級戊基,R5
獨立地是OH、OLi或ONa,並且在化學式 (IV) 中r係0或更大(例如0-10),其中該等芳環在一或多個除氫以外的取代基的其他位置被任選取代,R6
在化學式 (VI) 中是一個二價有機部分,R7
在化學式 (VII) 中是一個二價有機部分,每個Z獨立地是C1-C20有機部分、鋰、鈉、季銨或季鏻,且o和p各自獨立地為1或更大的整數。這類有機硫物種的例子包括由Arkema公司以商標名稱Vultac®
(化學式IV,R4
= 三級丁基或三級戊基,R5
= OH)銷售的芳香族多硫化物;和從巰基酸類如巰基乙酸、巰基丙酸、巰基乙磺酸、巰基丙磺酸,或從含烯烴酸類如乙烯基磺酸或2-丙烯醯胺基-2-甲基丙烷磺酸衍生的對應於化學式VI和VII的多硫化物酸式鹽。 在又一實施方式中,有機硫物種係一含有具有化學式 (IX) 的三硫代碳酸酯官能度的有機或有機-金屬多硫化物,含有具有化學式 (X) 的二硫代碳酸酯官能度的有機或有機金屬多硫化物,或含有具有化學式 (XI) 的一硫代碳酸酯官能度的有機或有機金屬多硫化物:其中Z係C1-C20有機部分、Na、Li、季銨或季鏻,且o和p獨立地為1或更大的整數。 液體或凝膠電解質溶液可以另外包括具有化學式M-S-Sn
-M的雙金屬多硫醇鹽物種,其中每個M獨立地為Li、Na、季銨或季鏻,且n係1或更大的整數。這樣的物種因此不包含任何有機部分,不同於上述的有機硫物種。 中間隔板元件可以用作電化學電池內的隔室之間的分隔件。一隔室可包括與陰極接觸的電解質溶液(在此隔室中的電解質溶液可被稱為陰極電解質液)。另一隔室可包括與陽極接觸的電解質溶液(在此隔室中的電解質溶液可被稱為陽極電解質液)。陽極電解質液和陰極電解質液可以是彼此相同或不同的。陽極電解質液和陰極電解質液中的一者或兩者可包含一或多種根據本發明的有機硫物種。中間隔板元件可以上述方式放置在隔室之間,以便允許離子從陽極電解質液通過該中間隔板元件進入陰極電解質液,並且反之亦然,這取決於電化學電池係在充電或放電模式操作。 在本發明的另一實施方式中,該中間分隔元件包含一多孔聚合物。該多孔聚合物可包含例如聚丙烯、聚乙烯或含氟聚合物。該多孔聚合物可使用本文所描述類型的有機硫物種官能化。該有機硫物種可以懸接在多孔聚合物的主鏈上,可存在於單個聚合物鏈的主鏈之間的交聯中和/或可結合到該多孔主鏈的主鏈中。因此,多孔聚合物的主鏈可包含一個或更多個-S-Sn
-鏈和/或-S-Sn
-鏈可以懸接在聚合物主鏈上。此-S-Sn
-鏈也可存在於交聯中。 在根據本發明的電化學電池中使用的合適的溶劑包括任何已知的或通常用於鋰-硫電池的鹼性(陽離子錯合)非質子極性溶劑,如環丁碸、二甲亞碸、二甲基乙醯胺、四甲基脲、N
-甲基吡咯啶酮、四乙基磺醯胺;醚類,如四氫呋喃、甲基-THF、1,3-二氧戊環、二甘醇二甲醚和四乙二醇二甲醚,和它們的混合物;碳酸酯類,如碳酸伸乙酯、碳酸伸丙酯、碳酸二甲酯、碳酸二乙酯、碳酸甲乙酯、碳酸甲丙酯、碳酸乙丙酯和類似物;以及酯類,如乙酸甲酯、乙酸乙酯、乙酸丙酯和γ-丁內酯。該電解質可包含該等溶劑的單一一種或該等溶劑的混合物。電池技術領域中已知的任何極性非質子聚合物也可以使用。該電解質溶液可以包括聚合物材料,且可以是凝膠的形式。用於該電解質溶液的合適的聚合物可以包括,例如,聚環氧乙烷,聚醚碸,聚乙烯醇,或聚醯亞胺。該電解質溶液可以是凝膠的形式,其可以是一個三維的網路,包含液體和黏合劑成分。該液體可以是被夾帶在聚合物(如交聯聚合物)中的單體溶劑。 在結合有非水的極性非質子溶劑和/或聚合物的電解質溶液中存在一或多種導電鹽類。電池技術領域中眾所周知的導電鹽類包括,例如,(CF3
SO2
)2
N¯、CF3
SO3
¯、CH3
SO3
¯、ClO4
¯、PF6
¯、AsF6
¯、鹵素等類似物的鋰鹽。也可以使用鈉和其他鹼金屬的鹽及其混合物。 該陽極活性材料可以包括鹼金屬如鋰或鈉或其他活性材料或組合物。特別較佳的陽極活性材料包括金屬鋰,鋰合金,金屬鈉,鈉合金,鹼金屬或它們的合金,鋰與鋁、鎂、矽和/或錫的合金、金屬粉末,鹼金屬-碳和鹼金屬-石墨插層物,能夠可逆地與鹼金屬離子的氧化和還原的化合物,以及它們的混合物。在電池內也可以以一層薄膜或任選由陶瓷材料分離的多層薄膜的形式含有金屬或金屬合金(例如金屬鋰)。合適的陶瓷材料包括,例如,二氧化矽,氧化鋁,或含鋰玻璃材料,如磷酸鋰、鋁酸鋰、矽酸鋰、鋰磷氧氮化物、氧化鋰鉭、鋁矽酸鋰、氧化鋰鈦、矽硫化鋰,鍺硫化鋰、鋁硫化鋰、硼硫化鋰、磷硫化鋰和它們的混合物。 該陰極包括元素硫,硒元素或元素硫族元素的混合物。在一實施方式中,該陰極另外包含一或多個按照本文之前詳細描述的那些有機硫物種。該陰極可另外和/或替代地包含黏合劑和/或導電添加劑。合適的黏合劑包括聚合物如,例如,聚乙烯醇,聚丙烯腈,聚偏二氟乙烯(PVDF),聚氟乙烯,聚四氟乙烯(PTFE),四氟乙烯和六氟丙烯的共聚物,偏二氟乙烯和六氟丙烯的共聚物,偏二氟乙烯和四氟乙烯的共聚物,乙烯-丙烯-二烯單體橡膠(EPDM),聚氯乙烯(PVC)。導電添加劑可以是,例如,導電碳如石墨、石墨烯、碳纖維、碳奈米管、碳黑,或煙灰(例如,燈或爐煙灰)。該陰極可以存在於蓄電池或結合有集電器的電化學電池中,該集電器如在電池或電化學電池技術領域中任何已知的集電器。例如,該陰極可以塗覆在金屬集電器的表面上。
Claims (4)
- 一種電池,包括: a) 一陽極,其包括一陽極活性材料,該陽極活性材料包括鈉、鋰或至少一種鈉或鋰與至少一種提供離子的其他金屬的合金或複合材料; b) 一陰極,其包括一陰極活性材料,該陰極活性材料包括元素硫、元素硒或硫族元素(chalcogens)的混合物;以及 c) 放置在該陽極和該陰極之間的一中間隔板元件,用於分離與該陽極和該陰極接觸的液體或凝膠電解質溶液,在電池的充電和放電循環過程中在該陽極和該陰極之間的金屬離子和其相對離子通過該隔板元件移動; 其中該液體或凝膠電解質溶液包括一非水的極性非質子溶劑或聚合物以及一導電鹽,並且滿足條件 (i)、(ii) 或(iii)中的至少一個: (i) 該液體或凝膠電解質溶液中的至少一種另外包括至少一種有機硫物種; (ii) 該陰極另外包括至少一種有機硫物種; (iii) 該中間隔板元件包括一含有至少一種有機硫物種的官能化的多孔聚合物; 其中該有機硫物種係選自由硫代磺酸根[-S(O)2-S-]、硫代亞磺酸根[-S(O)-S-]、硫代羧酸根[-C(O)-S-]、二硫代羧酸根[-C(S)-S-]、硫代磷酸酯、硫代膦酸酯、一硫代碳酸酯、二硫代碳酸酯、三硫代碳酸酯、芳香族多硫化物、聚醚-多硫化物、多硫化物-酸式鹽及其混合物組成的群組。
- 如請求項1之電池,其中該有機硫物種係懸接在該官能化的多孔聚合物的主鏈上。
- 如請求項1之電池,其中該有機硫物種係交聯成或形成該官能化的多孔聚合物的主鏈的一部分。
- 如請求項1項之電池,其中該多孔的中間隔板係將電池分隔以提供一與該陽極相關的陽極電解質液部分和一與該陰極相關的陰極電解質液部分,並且其中該有機硫物種係存在於該陽極電解質液部分或該陰極電解質液部分的至少一者中。
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