Kureha Corporation

Yukitaro Sakakibara

Shota Kobayashi

Keisuke Watanabe

Kenta Aoki

Kana Ashida

The present invention is to provide a binder composition of a non-aqueous electrolyte secondary battery, which contains a vinylidene fluoride polymer and is capable of further enhancing adhesive strength of the electrode mixture layer to a surface of a current collector. The above objective can be achieved by a binder composition of a non-aqueous electrolyte secondary battery, the binder composition comprising a vinylidene fluoride copolymer for a binder of a non-aqueous electrolyte secondary battery, the vinylidene fluoride copolymer containing: a first constituent unit derived from vinylidene fluoride, and a second constituent unit containing an isocyanate group or having a structure that produces an isocyanate group when heated at 200&#xb0; C. for 1 hour. This binder composition can be used in a mixture for producing an electrode for a non-aqueous electrolyte secondary battery, an electrode for a non-aqueous electrolyte secondary battery, and a non-aqueous electrolyte secondary battery.

Binder composition, mixture for producing electrode for non-aqueous electrolyte secondary battery, electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery

The present invention provides a gel-like electrolyte having excellent electrolyte solution retention ability. The resin composition contains an electrolyte composition containing a solvent and an electrolyte and a vinylidene fluoride copolymer. The vinylidene fluoride copolymer is a copolymer of vinylidene fluoride and a comonomer represented by Formula (1) below, wherein Rand Rare each independently a hydrogen atom or a fluorine atom, Ris a hydrogen atom, a fluorine atom, or an alkyl group having from 1 to 5 carbons, and Ris a basic group that is capable of forming an intermolecular hydrogen bond. 

Growing community of inventors

Tokyo, Japan

Yukitaro Sakakibara