Kyoritsu Chemical Co., Ltd.

Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Taichi Uemura

Shinya Tsuchida

Nobuyuki Kobayashi

Takanori Sannan

Yoshihiko Iijima

Seiji Doi

Yosuke Ichinomiya

A battery electrode or separator surface protective agent composition having fluidity and being capable of being solidified by hot melt, and comprising at least two types of organic particles comprising organic materials, wherein the organic particles of types different from each other are substantially incompatible with each other, wherein when the composition is solidified by hot melt, the organic particles of the same type thermally fuse with one another to form a continuous phase.

Battery electrode or separator surface protective agent composition, battery electrode or separator protected by the composition, and battery having the battery electrode or separator

A task of the present invention is to solve the problem in that the conductive undercoating agent composition for coating a current collector has so poor electrochemical durability that the conductive undercoating agent composition is peeled off the current collector after a long-term reliability test. A conductive undercoating agent composition for a current collector for a battery or electrical double layer capacitor, which comprises a polymer having a substituent capable of bonding to an active hydrogen group, inorganic particles having an active hydrogen group, and a conductive agent.

Conductive undercoating agent composition

A conductive composition for coating a current collector of coating a current collector for a battery or an electrical double layer capacitor, where the adhesion properties between a battery current collector and an active material layer are increased to improve the battery characteristics is presented. A battery using the battery current collector using the composition is also presented. The conductive composition for coating the current collector includes a vinylsilane copolymer, a polycarboxylic acid, and a conductive auxiliary. The formulation of the vinylsilane copolymer is also presented.

Conductive composition for coating a current collector for a battery or an electrical double layer capacitor, current collector for battery or electrical double layer capacitor, battery, and electrical double layer capacitor

A coating formulation for forming a conductive coating film on a surface of a collector for constructing an electrode plate for an electricity storage device is provided. The coating formulation contains (A) a polymeric acid, (B) a vinyl carboxylate copolymer represented by the following formula (1): wherein Ris selected from the group consisting of H, Na, organic groups derived from vinyl carboxylate monomers, and cations capable of forming electrolytes for the electricity storage device, Rto Rare independently selected from the group consisting of H, Na, C-Calkyl groups, and cations capable of forming electrolytes for the electricity storage device, and a ratio (m/n) of m to n is from 0.0001 to 1, (C) a conductive material, and (D) a polar solvent.

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Chiba, Japan

Taichi Uemura