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SE2351053A1 - Binder for a secondary cell - Google Patents

Binder for a secondary cell

Info

Publication number
SE2351053A1
SE2351053A1 SE2351053A SE2351053A SE2351053A1 SE 2351053 A1 SE2351053 A1 SE 2351053A1 SE 2351053 A SE2351053 A SE 2351053A SE 2351053 A SE2351053 A SE 2351053A SE 2351053 A1 SE2351053 A1 SE 2351053A1
Authority
SE
Sweden
Prior art keywords
cathode
binder
elastomeric polyurethane
solvent
secondary cell
Prior art date
Application number
SE2351053A
Inventor
Manal Alshikh-Ali
Prasad Mangesh Korde
Original Assignee
Northvolt Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northvolt Ab filed Critical Northvolt Ab
Priority to SE2351053A priority Critical patent/SE2351053A1/en
Publication of SE2351053A1 publication Critical patent/SE2351053A1/en

Links

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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621—Binders
    • H01M4/622—Binders being polymers
    • 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
    • H01M10/02—Details
    • 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
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • 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)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

A binder for a cathode in a secondary cell, wherein the binder comprises an elastomeric polyurethane; a cathode material as well as a cathode comprising said binder; a method to produce said cathode; a secondary cell comprising said cathode; and a vehicle comprising said secondary cell.

Claims (20)

Claims
1. A cathode binder for a secondary cell, wherein the binder comprises an elastomeric polyurethane.
2. The binder according to claim 1, wherein the elastomeric polyurethane polymer is a po|y(urethane-urea) copolymer.
3. The binder according to claims 1 or 2, wherein the elastomeric polyurethane comprises spandex.
4. The binder according to any one of the above claims, wherein the elastomeric polyurethane polymer has a molecular weight from about 150000 g/mol to aboutg/mol.
5. The binder according to claim 4, wherein the molecular weight is from about 210000 to about 280000 g/mol.
6. The binder according to any one of the above claims, wherein the elastomeric polyurethane has a glass transition temperature (Tg) ranging from 50 °C to 70 °C.
7. The binder according to any one of the previous claims, wherein the possible elongation of the elastomeric polyurethane in the form of a fiber is between about 500% and about 800%.
8. The binder according to any one of the previous claims, wherein the possible elongation of the elastomeric polyurethane in the form of a fiber is about 650%.
9. A cathode material comprising the binder according to any one of the previous claims, and a conductive material.
10. The cathode material according to claim 9, wherein the conductive material comprises
11. HNBR.11. The cathode material according to claim 9 or 10, wherein the conductive material is a composition comprising HNBR in combination with CNT, CNF, graphene, carbon black, or a combination thereof.
12. The cathode material according to any one of claims 9 to 11, further comprising an active material selected from at least one of nickel manganese cobalt oxide (NMC), lithium iron phosphate (LFP), nickel cobalt manganese aluminum (N|\/ICA), lithium manganese nickel oxide (LMNO), or a lithium manganese oxide (LMO).
13. A cathode comprising the cathode binder according to any one of claims 1 - 8, or a cathode material according to any one of claims 9 -
14. The cathode according to claim 13, wherein the cathode is an NMC-, LFP-, NMCA-, LMNO-, or an LMO-cathode.
15. The cathode according to claim 14, wherein the cathode is an N|\/IC-cathode.
16. A method for preparing a cathode according to any one of claims 13 - 15, comprising dispersing the cathode material according to any one of claims 9 - 12 in a solvent or solvent mixture, wherein the solvent or solvent mixture has a relative energy difference (RED), as calculated using Hansen solubility parameters, between about 0.1 and between about 0.
17. The method according to claim 16, wherein the solvent or solvent mixture is selected from the group consisting of N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), N,N-dimethylacetamide (DMA), N-butylpyrrolidin-2-one (NBP), dimethyl isosorbide (DMI), dimethylsulfoxide (DMSO), triethylphosphate, gamma-valerolactone (GVL), and an alkoxy- N-substituted propanamide according formula (I)wherein Rl - Rg independently are C14; alkyl, followed by coating a substrate and removing the solvent.
18. The method according to claim 15 or 16, wherein the solvent is N-butylpyrrolidin-2-one (NBP).
19. A secondary cell comprising an anode, a cathode, an electrolyte, and optionally a separator, characterized in that the secondary cell further comprises a cathode binder, comprising an elastomeric polyurethane.
20. A vehicle comprising the secondary cell according to claim 18
SE2351053A 2023-09-08 2023-09-08 Binder for a secondary cell SE2351053A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE2351053A SE2351053A1 (en) 2023-09-08 2023-09-08 Binder for a secondary cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2351053A SE2351053A1 (en) 2023-09-08 2023-09-08 Binder for a secondary cell

Publications (1)

Publication Number Publication Date
SE2351053A1 true SE2351053A1 (en) 2025-03-09

Family

ID=95252052

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2351053A SE2351053A1 (en) 2023-09-08 2023-09-08 Binder for a secondary cell

Country Status (1)

Country Link
SE (1) SE2351053A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019010443A1 (en) * 2017-07-07 2019-01-10 Ppg Industries Ohio, Inc. Electrode binder slurry composition for lithium ion electrical storage devices
US20230178744A1 (en) * 2021-12-07 2023-06-08 Hyundai Motor Company Crosslinked binder for all solid-state battery and method of preparing same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019010443A1 (en) * 2017-07-07 2019-01-10 Ppg Industries Ohio, Inc. Electrode binder slurry composition for lithium ion electrical storage devices
US20230178744A1 (en) * 2021-12-07 2023-06-08 Hyundai Motor Company Crosslinked binder for all solid-state battery and method of preparing same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Chang, B. et al. "Highly Elastic Binder for Improved Cyclability of Nickel-Rich Layered Cathode Materials in Lithium-Ion Batteries" In: Adv. Energy Mater., 2020, Jun., Vol. 10, No. 29, paper id: 2001069. *
Lee, Y-H. et al. "Low Molecular Weight Spandex as a Promising Polymeric Binder for LiFePO4 electrodes" In: Adv. Energy Mater., 2017, Vol. 7, No. 8, paper id: 1602147. *

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