SE547093C2 - A binder composition for an electrode - Google Patents

A binder composition for an electrode

Info

Publication number
SE547093C2
SE547093C2 SE2251593A SE2251593A SE547093C2 SE 547093 C2 SE547093 C2 SE 547093C2 SE 2251593 A SE2251593 A SE 2251593A SE 2251593 A SE2251593 A SE 2251593A SE 547093 C2 SE547093 C2 SE 547093C2
Authority
SE
Sweden
Prior art keywords
anode
poly
acrylate
additive
acid
Prior art date
Application number
SE2251593A
Other languages
Swedish (sv)
Other versions
SE2251593A1 (en
Inventor
Parth Omprakash Dayama
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 SE2251593A priority Critical patent/SE547093C2/en
Priority to PCT/EP2023/086821 priority patent/WO2024141361A1/en
Publication of SE2251593A1 publication Critical patent/SE2251593A1/en
Publication of SE547093C2 publication Critical patent/SE547093C2/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
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • 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
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • 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
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The disclosure provides a method for manufacturing an anode for a lithium-ion secondary cell, the method comprising the steps of mixing a chitosan with an acid comprising an H+ functional group, adding a conductive additive, a viscosity agent and an anode active material comprising silicon, and adding an acrylic emulsion additive having a glass transition temperature (Tg) of from -80 to 65 °C to the mixture obtained in step b). The acid comprising an H+ functional group may be carboxylic acid. An anode and a lithium-ion cell comprising an anode is also provided.

Claims (15)

1. A method for manufacturing an anode for a lithium-ion secondary cell, the method comprising the steps of: a) mixing a chitosan With an acid comprising an H* fianctional group, b) adding a conductive additive, a viscosity agent and an anode active material comprising silicon, and c) adding an acrylic emulsion additive having a glass transition temperature (Tg) of from -80 to 65 °C.
2. The method according to claim 1, Wherein the acrylic emulsion additive has a glass transition temperature (Tg) being from -60 to 45 °C
3. . The method according to any of claims 1-2, Wherein the acrylic emulsion additive comprises one or more selected from poly(methyl methacrylate), poly(methyl acrylate), poly(ethyl acrylate), poly(butyl acrylate), poly(2-ethylhexyl acrylate), a copolymer formed from two or more of methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate, and mixtures thereof
4. The method according to any of claims 1-3, Wherein the acrylic emulsion additive has a pH of from 6 to
5. The method according to any of claims 1-4, Wherein the acrylic polymer has a number average molecular Weight (Mn) of from 300,000 to 2,000,000 g/mol.
6. The method according to any of claims 1-5, Wherein the acid comprising an H* fianctional group is a carboxylic acid.
7. The method according to any of claims 1-6, Wherein the viscosity agent is PAA.
8. The method according to any of claims 1-7, wherein the compounds are added in the following amounts: 0.2 to 4 wt.% of chitosan, 0.1 to 5 Wt.% of carboxylic acid, 0.1 to 2 wt.% of PAA, 1 to 4 Wt.% of acrylic emulsion, 0.1 to 3 wt.% of conductive additive, 80 to 96 wt.% of an anode active material comprising silicon, all calculated in relation to the total weight of these compounds.
9. The method according to any of claims l-8, further comprising the steps of: d) coating the anode slurry onto a current collector, and optionally e) drying the anode slurry coated on the current collector.
10. The method according to claim 9, wherein the step of drying is performed at a temperature of between 40 and 150 °C. HfAn anode obtained by the method according to any of claims 1-10? Abu an .de for a lithiianiífn fieccndurf' cell, wherein the anode material __________________ __ _; comprises: - a conductive additive, - an acrylic polymer, - a Viscosity agent, and - a chitosan crosslinked with an acid and with anode active material comprising silicon. _____________ __The anode according to claim lšjj., wherein the acrylic polymer is at least one selected from poly(methyl methacrylate), poly(methyl acrylate), poly(ethyl acrylate), poly(butyl acrylate), poly(2-ethylhexyl acrylate), a copolymer formed from two or more of methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, and 2- ethylhexyl acrylate, and mixtures thereof Vi åflš. The anode according to any of claims 121-132, wherein the acid is carboxylic acid. ___________ “The anode according to any of clainis l%_l__-l43_, Wherein the anode coniprises 0.2 to 4 Wt.% of chitosan, 0.1 to 5 Wt.% of carboxylic acid, 0.1 to 2 Wt.% of PAA, 1 to 4 Wt.% of acrylic eniulsion additive, 0.1 to 3 Wt.% of conductive additive, and 80 to 96 Wt.% of anode active material, calculated in relation to the total Weight of these conipounds. oooooooooo “A lithiuni-ion secondary cell coniprising an anode according to any of clainis ll-lšffí.
SE2251593A 2022-12-29 2022-12-29 A binder composition for an electrode SE547093C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2251593A SE547093C2 (en) 2022-12-29 2022-12-29 A binder composition for an electrode
PCT/EP2023/086821 WO2024141361A1 (en) 2022-12-29 2023-12-20 A binder composition for an electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2251593A SE547093C2 (en) 2022-12-29 2022-12-29 A binder composition for an electrode

Publications (2)

Publication Number Publication Date
SE2251593A1 SE2251593A1 (en) 2024-06-30
SE547093C2 true SE547093C2 (en) 2025-04-22

Family

ID=89508835

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2251593A SE547093C2 (en) 2022-12-29 2022-12-29 A binder composition for an electrode

Country Status (2)

Country Link
SE (1) SE547093C2 (en)
WO (1) WO2024141361A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017069108A (en) * 2015-09-30 2017-04-06 日本ゼオン株式会社 Slurry composition for lithium ion secondary battery electrode, lithium ion secondary battery electrode and lithium ion secondary battery

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106159271B (en) * 2015-04-22 2019-04-23 北京有色金属研究总院 A kind of lithium ion battery electrode for being cross-linked in situ polymeric binder and its preparation
US20220102713A1 (en) * 2020-06-09 2022-03-31 Enevate Corporation Aqueous based polymers for silicon dominant anodes
KR102515925B1 (en) * 2021-03-17 2023-03-30 울산대학교 산학협력단 Polymer binder for secondary ion battery and method for producing the same
EP4331026A4 (en) * 2021-04-28 2025-06-25 Volt14 Solutions Pte. Ltd. ANODE INK FORMULATION FOR LITHIUM-ION BATTERIES

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017069108A (en) * 2015-09-30 2017-04-06 日本ゼオン株式会社 Slurry composition for lithium ion secondary battery electrode, lithium ion secondary battery electrode and lithium ion secondary battery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Sbrascini, Leonardo et al, "Structural and interfacial characterization of a sustainable Si/Hard carbon Composite anode for Lithium-ion batteries", ACS Appl. Mater. Interfaces, 2022, 14, 33257-33273 *

Also Published As

Publication number Publication date
SE2251593A1 (en) 2024-06-30
WO2024141361A1 (en) 2024-07-04

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