SLURRY COMPOSITION FOR NON AQUEOUS ELECTROLYTE BATTERY ELECTRODE, AND NON AQUEOUS ELECTROLYTE BATTERY POSITIVE ELECTRODE AND NON AQUEOUS ELECTROLYTE BATTERY USING SAME

• US 20180226634A1
• Filed: 08/05/2016
• Published: 08/09/2018
• Est. Priority Date: 08/06/2015
• Status: Active Grant

• Current Assignee: Kuraray Company Limited
• Original Assignee: Kuraray Company Limited
• Inventors: OHTA, Yuki, TANAKA, Toshimitsu, FUJIOKA, Junji, CHO, Jun-Sang, IWASAKI, Hideharu
• Granted Patent: US 10,644,307 B2
• Time in Patent Office: Days
• CPC Class Codes: C08L 2203/20 use in electrical or conductive gadgets
• CPC Class Codes: C08L 33/02 Homopolymers or copolymers of acids; Metal or ammonium salts thereof
• CPC Class Codes: C08L 35/00 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 2004/028 Positive electrodes
• CPC Class Codes: H01M 4/0404 by coating on electrode collectors
• CPC Class Codes: H01M 4/1391 of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/62 Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• CPC Class Codes: H01M 4/622 being polymers
• CPC Class Codes: H01M 4/623 fluorinated polymers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention pertains to a slurry composition for non aqueous electrolyte battery electrodes that includes a binder composition, an active material, and a solvent, in which the active material is a lithium-containing metal oxide, the binder composition contains a neutralized salt of an α-olefin-maleic acid copolymer in which an α-olefin and a maleic acid are copolymerized, and the degree of neutralization for carboxylic acid generated from the maleic acid in the copolymer is from 0.3 to 1.0. The present invention further pertains to a non aqueous electrolyte battery positive electrode and a non aqueous electrolyte battery using the slurry composition for non aqueous electrolyte battery electrodes.

Claims

1. A slurry composition for non aqueous electrolyte battery electrodes, comprising a binder composition, an active material, and a solvent,

wherein

the active material is a lithium-containing metal oxide,

the binder composition contains a neutralized salt of an α

-olefin-maleic acid copolymer in which an α

-olefin and a maleic acid are copolymerized, and

a degree of neutralization for carboxylic acid generated from the maleic acid in the copolymer is from 0.3 to 1.0.

2. A non aqueous electrolyte battery positive electrode formed by binding a mixed layer containing the slurry composition according to claim 1 to a current collector.

3. A non aqueous electrolyte battery having the non aqueous electrolyte battery positive electrode according to claim 2.