CN104134796A - 一种锂离子电池三元正极材料的改性方法 - Google Patents
一种锂离子电池三元正极材料的改性方法 Download PDFInfo
- Publication number
- CN104134796A CN104134796A CN201410364762.XA CN201410364762A CN104134796A CN 104134796 A CN104134796 A CN 104134796A CN 201410364762 A CN201410364762 A CN 201410364762A CN 104134796 A CN104134796 A CN 104134796A
- Authority
- CN
- China
- Prior art keywords
- lini
- lithium ion
- ion battery
- modifying
- positive electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 239000010405 anode material Substances 0.000 title abstract description 7
- 238000002715 modification method Methods 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000012216 screening Methods 0.000 claims abstract description 6
- 229910013716 LiNi Inorganic materials 0.000 claims description 26
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 239000010406 cathode material Substances 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 8
- 229910001456 vanadium ion Inorganic materials 0.000 claims description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 229910014336 LiNi1-x-yCoxMnyO2 Inorganic materials 0.000 abstract 2
- 229910014446 LiNi1−x-yCoxMnyO2 Inorganic materials 0.000 abstract 2
- 229910014825 LiNi1−x−yCoxMnyO2 Inorganic materials 0.000 abstract 2
- 229910000540 VOPO4 Inorganic materials 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- 229910002991 LiNi0.5Co0.2Mn0.3O2 Inorganic materials 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 206010058490 Hyperoxia Diseases 0.000 description 1
- 229910012820 LiCoO Inorganic materials 0.000 description 1
- 229910014689 LiMnO Inorganic materials 0.000 description 1
- 229910011328 LiNi0.6Co0.2Mn0.2O2 Inorganic materials 0.000 description 1
- 229910015872 LiNi0.8Co0.1Mn0.1O2 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 230000000222 hyperoxic effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明公开了一种锂离子电池三元正极材料,即LiNi1-x-yCoxMnyO2正极材料的改性方法,包括称取物料——搅拌形成溶液——加入改性材料——烧结——冷却——筛分,得到VOPO4包覆的LiNi1-x-yCoxMnyO2正极材料。本发明制备方法简单,流程短,且材料加工性能与电化学性能优异。
Description
技术领域
本发明属于锂离子电池正极材料领域,具体涉及锂离子电池LiNi1-x-yCoxMnyO2正极材料的改性方法。
背景技术
高能量密度、长循环寿命和高安全性是当前锂离子电池追求的一致目标,锂离子电池正极材料性能的优劣很大程度上影响着整个电池性能的好坏,因此正极材料的研发显得至关重要。
目前,商用的正极材料还是以LiCoO2为主,但钴资源的稀缺导致其价格昂贵,且有毒、热稳定性差等不利因素限制了其进一步应用,而LiNi1-x-yCoxMnyO2材料兼具了LiCoO2、LiNiO2、LiMnO2三者的特性,相比LiCoO2具有高能量密度、低成本、较好的安全性等优点,被认为是锂离子电池正极材料的理想选择。因此,LiNi1-x-yCoxMnyO2正极材料引起了研究者的高度重视。
然而,LiNi1-x-yCoxMnyO2材料在高电位下,高氧化性和高活性的Ni4+会催化电解液分解,导致循环性能变差;且高温下,材料与电解液直接接触,会与电解液中痕量的HF反应,破坏界面结构,进而导致Ni、Co和Mn在电解液中溶解,造成容量衰减;同时,材料表面有大量的锂残渣,当材料暴露在空气中时,会与空气中的H2O/CO2反应形成LiOH/Li2CO3,并带大量的水分进入电池中,不仅影响材料的加工性能,而且严重恶化电池的电化学性能。这些问题严重制约了LiNi1-x-yCoxMnyO2材料的应用。
表面包覆是对材料进行改性的一种有效途径。采用金属氧化物、氟化物、磷酸盐和碳等进行表面包覆,隔离材料与电解液的直接接触,抑制电解液中HF对材料的腐蚀达到改性目的。然而这些常用的包覆物质并不具备锂离子通道,会在一定程度上阻碍锂离子传输,进而影响材料的倍率性能。VOPO4是一种层状结构的化合物,具有优越的可插锂特性,层与层之间允许锂离子的传输。且VOPO4在电解液中结构稳定,能够有效提高LiNi1-x-yCoxMnyO2材料的电化学性能。
发明内容
本发明的目的是弥补现有技术的不足,利用VOPO4优越的可插锂特性,提供一种锂离子电池LiNi1-x-yCoxMnyO2正极材料的改性方法,以有效的提高正极材料的空气存储性能、高温存储性能和循环性能。
为了实现上述目的,本发明的技术方案为,一种锂离子电池三元正极材料,即LiNi1-x-yCoxMnyO2正极材料的改性方法,包括以下步骤:
步骤1,按照摩尔比为2:1:2的NH4H2PO4、V2O5和C6H8O7·H2O称取物料,将称取物料加入去离子水中,控制钒离子浓度为0.01~1 mol·L-1,加入氨水调节pH值为3~8,加热至40~100℃搅拌,形成溶液;
步骤2,按照VOPO4与LiNi1-x-yCoxMnyO2正极材料的质量比为0.001~0.10的比例称取LiNi1-x-yCoxMnyO2,将称取的LiNi1-x-yCoxMnyO2投入到步骤1制得的溶液中,加去离子水稀释,加入LiNi1-x-yCoxMnyO2正极材料和去离子水的质量比为1:1~10,搅拌均匀,进行喷雾干燥;喷雾干燥入风温度为100~200℃,出风温度为100~150℃;
步骤3,将喷雾所得的粉末在烧结气氛为氧气下烧结2~10h,烧结温度600~900℃,随炉冷却,筛分,得到VOPO4包覆的LiNi1-x-yCoxMnyO2正极材料。
所述步骤1中,钒离子浓度为0.02~0.5 mol L-1。
所述步骤1中,加热温度为60~80℃,调节PH值范围为5~7。
所述步骤2中,加入LiNi1-x-yCoxMnyO2正极材料的质量和去离子水质量比为1:0.5~2。
所述步骤2中,喷雾干燥入风温度为120~170℃,出风温度为100~110℃。
所述步骤3中,烧结温度为650~850℃,烧结时间为3~5h。
本发明具有的有益效果:采用喷雾干燥的方法对LiNi1-x-yCoxMnyO2正极材料表面均匀包覆一层VOPO4。表面包覆的VOPO4层在电解液和空气中均具有较好的稳定性,能很好的隔离空气中的H2O/CO2和电解液,从而提高LiNi1-x-yCoxMnyO2材料的空气存储性能、高温存储性能和循环性能。本发明提出的一种LiNi1-x-yCoxMnyO2材料的改性方法,制备方法简单,流程短,且材料加工性能与电化学性能优异。
附图说明
图1为实施例1中样品的XRD图;
图2为实施例1中样品的TEM图
图3为实施例1中样品在60℃时的2C循环性能;
图4为实施例2中样品充电至4.3V于90℃存储5h后的2C循环性能;
图5为实施例3中样品在室温时的2C循环性能。
具体实施方式
下面结合附图和实施例对本发明进行进一步描述。
实施例1:将摩尔比为2:1:2的NH4H2PO4,V2O5和C6H8O7·H2O置于去离子水中,控制钒离子的浓度为0.1 mol L-1,加入氨水调节pH=6,在80℃下搅拌,形成溶液;VOPO4包覆量为1%计算所需LiNi0.5Co0.2Mn0.3O2的质量,置于溶液中,加适量去离子水稀释;其中去离子水质量与LiNi0.5Co0.2Mn0.3O2质量比是1:1;搅拌均匀后喷雾干燥,控制入风温度为150℃,出风温度100℃,所得粉末在氧气中850℃煅烧180分钟,随炉冷却,筛分,得到VOPO4包覆量为1%的锂离子电池LiNi0.5Co0.2Mn0.3O2正极材料。从图1可以看出,包覆样品的XRD谱中并未有杂相峰。从图2可以看出,在样品表面有一层均匀的包覆层。将样品制成扣式电池测试电化学性能,从图3可以看出,包覆样品的高温循环性能得到提升,这也与包覆材料的结构稳定性得到增强有关。
实施例2:将摩尔比为2:1:2的NH4H2PO4,V2O5和C6H8O7·H2O置于去离子水中,控制钒离子的浓度为0.3 mol L-1,加入氨水调节pH=5,在70℃下搅拌,形成溶液;以VOPO4包覆量为3%计算所需LiNi0.8Co0.1Mn0.1O2的质量,置于溶液中,加去离子水稀释,其中去离子水质量与LiNi0.5Co0.2Mn0.3O2质量比是2:1;搅拌均匀后喷雾干燥,控制入风温度为120℃,出风温度100℃,所得粉末在氧气中700℃煅烧300分钟,随炉冷却,筛分,得到VOPO4包覆量为3%的锂离子电池LiNi0.8Co0.1Mn0.1O2正极材料。将样品制成扣式电池并用0.1C充电至4.3V后置于90℃恒温箱中保温5小时,再进行2C循环测试。从图4可以看出,包覆材料的高温存储性能要优于未包覆材料。为了比较材料在空气中存储性能,将两种材料置于空气中静置7天和30天,测定其表面Li2CO3和LiOH含量。从表1中可以看出,包覆样品的Li2CO3和LiOH含量明显低于未包覆样品,其空气存储性能优良。
表1实施例2中样品空气中存储7天和30天后Li2CO3和LiOH含量
实施例3:将摩尔比为2:1:2的NH4H2PO4,V2O5和C6H8O7·H2O置于去离子水中,控制钒离子的浓度为0.05 mol L-1,加入氨水调节pH=7,在60℃下搅拌,形成溶液;以VOPO4包覆量为0.5%计算所需LiNi0.6Co0.2Mn0.2O2的质量,置于溶液中,加去离子水稀释,其中去离子水质量与LiNi0.5Co0.2Mn0.3O2质量比是0.5:1;搅拌均匀后喷雾干燥,控制入风温度为150℃,出风温度110℃,所得粉末在氧气中800℃煅烧240分钟,随炉冷却,筛分,得到VOPO4包覆量为0.5%的锂离子电池LiNi0.6Co0.2Mn0.2O2正极材料。将样品制成扣式电池测试电化学性能,从图5可以看出,包覆样品的循环性能优于未包覆样品。
上面对本发明的实施例作了详细说明,上述实施方式仅为本发明的最优实施例,但是本发明并不限于上述实施例,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。
Claims (6)
1.一种锂离子电池三元正极材料的改性方法,其特征在于包括以下步骤:
步骤1,按照摩尔比为2:1:2的NH4H2PO4、V2O5和C6H8O7·H2O称取物料,将称取物料加入去离子水中,控制钒离子浓度为0.01~1 mol·L-1,加入氨水调节pH值为3~8,加热至40~100℃搅拌,形成溶液;
步骤2,按照VOPO4与LiNi1-x-yCoxMnyO2正极材料的质量比为0.001~0.10的比例称取LiNi1-x-yCoxMnyO2,将称取的LiNi1-x-yCoxMnyO2投入到步骤1制得的溶液中,加去离子水稀释,加入LiNi1-x-yCoxMnyO2正极材料和去离子水的质量比为1:1~10,搅拌均匀,进行喷雾干燥;喷雾干燥入风温度为100~200℃,出风温度为100~150℃;
步骤3,将喷雾所得的粉末在烧结气氛为氧气下烧结2~10h,烧结温度600~900℃,随炉冷却,筛分,得到VOPO4包覆的LiNi1-x-yCoxMnyO2正极材料。
2.如权利要求1所述的一种锂离子电池三元正极材料的改性方法,其特征在于步骤1中钒离子浓度为0.02~0.5 mol L-1。
3.如权利要求1所述的一种锂离子电池三元正极材料的改性方法,其特征在于步骤1中加热温度为60~80℃,调节PH值范围为5~7。
4.如权利要求1所述的一种锂离子电池三元正极材料的改性方法,其特征在于步骤2中加入LiNi1-x-yCoxMnyO2正极材料的质量和去离子水质量比为1:0.5~2。
5.如权利要求1所述的一种锂离子电池三元正极材料的改性方法,其特征在于步骤2中喷雾干燥入风温度为120~170℃,出风温度为100~110℃。
6.如权利要求1所述的一种锂离子电池三元正极材料的改性方法,其特征在于步骤3中烧结温度为650~850℃,烧结时间为3~5h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364762.XA CN104134796A (zh) | 2014-07-28 | 2014-07-28 | 一种锂离子电池三元正极材料的改性方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364762.XA CN104134796A (zh) | 2014-07-28 | 2014-07-28 | 一种锂离子电池三元正极材料的改性方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104134796A true CN104134796A (zh) | 2014-11-05 |
Family
ID=51807388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410364762.XA Pending CN104134796A (zh) | 2014-07-28 | 2014-07-28 | 一种锂离子电池三元正极材料的改性方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104134796A (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848183A (zh) * | 2017-02-24 | 2017-06-13 | 中国科学院新疆理化技术研究所 | 一种改善锂离子电池三元正极材料倍率性能的方法 |
| WO2024113626A1 (zh) * | 2022-11-30 | 2024-06-06 | 格林美(无锡)能源材料有限公司 | 一种锂快离子导体作为包覆层的高镍三元正极材料及其制备方法与应用 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295788A (zh) * | 2007-04-27 | 2008-10-29 | Tdk株式会社 | 活性物质、电极、电池、活性物质的制造方法 |
| CN102569808A (zh) * | 2011-11-25 | 2012-07-11 | 北京工业大学 | 一种高倍率富锂正极材料的改性方法 |
| CN102780002A (zh) * | 2012-07-28 | 2012-11-14 | 湘西自治州金鸿矿业有限责任公司 | 一种锂锰电池三元系正极材料的制备方法 |
-
2014
- 2014-07-28 CN CN201410364762.XA patent/CN104134796A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295788A (zh) * | 2007-04-27 | 2008-10-29 | Tdk株式会社 | 活性物质、电极、电池、活性物质的制造方法 |
| CN102569808A (zh) * | 2011-11-25 | 2012-07-11 | 北京工业大学 | 一种高倍率富锂正极材料的改性方法 |
| CN102780002A (zh) * | 2012-07-28 | 2012-11-14 | 湘西自治州金鸿矿业有限责任公司 | 一种锂锰电池三元系正极材料的制备方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848183A (zh) * | 2017-02-24 | 2017-06-13 | 中国科学院新疆理化技术研究所 | 一种改善锂离子电池三元正极材料倍率性能的方法 |
| WO2024113626A1 (zh) * | 2022-11-30 | 2024-06-06 | 格林美(无锡)能源材料有限公司 | 一种锂快离子导体作为包覆层的高镍三元正极材料及其制备方法与应用 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Rechargeable aqueous lithium-ion battery of TiO2/LiMn2O4 with a high voltage | |
| CN112599749B (zh) | 一种具有高导电性的高熵氧化物锂离子电池负极材料及制备方法 | |
| CN108011100A (zh) | 一种表面反应包覆的三元正极材料及其制备方法 | |
| CN105185974A (zh) | 锂离子电池正极材料及其制备方法 | |
| CN110931775A (zh) | 一种富锂锰基正极材料的改性方法 | |
| CN105244488A (zh) | 一种锂离子电池复合包覆正极材料及其制备方法 | |
| CN102694164A (zh) | 表面掺氮或碳的富锂氧化物正极材料及其制备方法 | |
| CN102637871A (zh) | 一种锂离子活性氧化物v2o5包覆锂离子正极材料的制备方法 | |
| CN110233244A (zh) | 一种高镍三元正极材料颗粒表面稳定化处理方法 | |
| CN109244428A (zh) | 一种高镍三元材料的包覆改性方法 | |
| CN115411257B (zh) | 一种表面双层包覆的富锂锰基正极材料及其制备方法和应用 | |
| CN110581277B (zh) | 一种锂离子电池正极材料的表面包覆方法 | |
| CN106450312B (zh) | 一种无机掺杂改性天然石墨的制备方法 | |
| CN112103480B (zh) | 预锂化SiOx负极材料的处理方法 | |
| CN114530572B (zh) | 用于水系金属电池的复合改性负极 | |
| CN113046768A (zh) | 一种氟磷酸钒氧钾及其制备方法和应用、一种钾离子电池 | |
| CN105304896A (zh) | 氧化锌包覆镍锰酸锂正极材料的制备方法 | |
| CN110061226B (zh) | 亚氧化钛包覆的正极材料、正极材料的制备方法及锂离子电池 | |
| CN110880590A (zh) | 氮化碳和碳包覆的nasicon型电极材料及其制备方法 | |
| CN108598382A (zh) | 一种低温熔融包覆锂离子电池正极材料的方法 | |
| CN107742722A (zh) | 一种锂离子电池用锰酸锂正极材料的改性方法 | |
| CN104134796A (zh) | 一种锂离子电池三元正极材料的改性方法 | |
| CN114388780B (zh) | 一种改性的镍钴锰三元正极材料及其制备方法和应用 | |
| CN102969495A (zh) | 一种富锂正极材料的改性方法 | |
| CN113991103A (zh) | 一种水系锂离子电池NaTi2(PO4)3/C负极材料的制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141105 |