Title:
POSITIVE ELECTRODE ACTIVE MATERIAL LAYER, ELECTRODE, AND SOLID-STATE BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/019114
Kind Code:
A1
Abstract:
Provided are: a positive electrode active material layer capable of forming a positive electrode exhibiting excellent adhesive property between the positive electrode active material layer and a current collector; an electrode provided with said positive electrode active material layer; and a semi-solid-state battery or an all-solid-state battery provided with said electrode. The present invention uses a positive electrode active material layer which contains a positive electrode active material (A), a solid electrolyte (B), and a binder (C). The binder (C) is a vinylidene fluoride copolymer including a constituent unit (C-a) derived from vinylidene fluoride and a constituent unit (C-b) derived from a monomer other than vinylidene fluoride. The constituent unit (C-b) derived from a monomer other than vinylidene fluoride includes a constituent unit derived from at least one selected from unsaturated dibasic acids, unsaturated dibasic acid monoesters, and compounds represented by formula (C-1). The constituent unit (C-a) derived from vinylidene fluoride is contained in an amount of 90.0 mass% or more with respect to 100.0 mass% of the total constituent units included in the vinylidene fluoride copolymer. [Chem. 1] (In formula (C-1), R1, R2, and R3 each independently represent a hydrogen atom, a chlorine atom, or an alkyl group having 1-5 carbon atoms, and X1 represents an atomic group having a molecular weight of 472 or less and having a main chain composed of 1-19 atoms, and includes at least one heteroatom selected from an oxygen atom and a nitrogen atom.)
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Inventors:
SUZUKI YUMENO (JP)
WATANABE KEISUKE (JP)
OKADA KAYOKO (JP)
WATANABE KEISUKE (JP)
OKADA KAYOKO (JP)
Application Number:
PCT/JP2023/026597
Publication Date:
January 25, 2024
Filing Date:
July 20, 2023
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
H01M4/13; H01M4/58; H01M4/62; H01M10/052; H01M10/0562
Domestic Patent References:
| WO2020059806A1 | 2020-03-26 |
Foreign References:
| JP2007194202A | 2007-08-02 | |||
| JP2003317722A | 2003-11-07 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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