Osaka Soda Co., Ltd.

Daiso Co., Ltd.

Tomoyuki Yano

Takashi Matsuo

Katsuhito Miura

Yasushi Miki

Motoki Kitagawa

Masatsugu Naitou

Ryo Okada

Yoshihiro Morooka

Miwa Nakamura

Hisashi Asai

Provided is a binder for battery electrodes which includes a polymer including: structural units (1) derived from a (meth)acrylate monomer (A) having a hydroxyl group; structural units (2) derived from a polyfunctional (meth)acrylate monomer (B); and structural units (3) derived from a reactive surfactant (C). This binder is used to prepare electrodes, and produce batteries such as lithium ion secondary batteries. Provided are: an aqueous binder which has a low environmental impact, exhibits excellent binding properties, and, notably, does not cause oxidation degradation under an electrode environment; and an electrode and a battery which use said binder.

Binder for battery electrodes, and electrode and battery using same

This binder for battery electrodes is characterized by containing a polymer including: (A) a structural unit represented by general formula (1) and derived from a monomer having a hydroxyl group (in the formula, R1 is a hydrogen or a C1-C4 straight-chain or branched alkyl group, R2 and R3 are each a hydrogen or a C1-C4 straight-chained or branched alkyl group, and n is an integer of 2-30); (B) a structural unit derived from an ethylenically unsaturated monomer having at least one functional group selected from the group consisting of a difunctional carboxylic acid group, a nitrile group and a ketone group; and (C) a structural unit derived from a polyfunctional (meth)acrylate monomer having at most five functional groups.

Binder for battery electrode, and electrode and battery using same

Disclosed is a battery electrode binder containing a polymer including (1) a constituent unit derived from a (meth)acrylate monomer (A) having a hydroxyl group, (2) a constituent unit derived from a vinyl ester monomer (B), and (3) a constituent unit derived from a polyfunctional (meth)acrylate monomer (C). Using the binder, an electrode is produced and adopted in a battery such as a lithium ion secondary battery. Obtained are: an aqueous binder that has a low environmental impact, has high adhesiveness, and in particular does not cause oxidative degradation in the electrode environment; and a battery and electrode using the binder.

Battery electrode binder and battery and electrode using same

The purpose of the present invention is to provide: an aqueous binder having high adhesiveness, that in particular does not exhibit oxidative degradation in an electrode environment, and having little environmental load; and an electrode and a battery that use same. Disclosed is a battery electrode binder containing: (A) a constituent unit derived from a monomer having a hydroxyl group; and (B) a constituent unit derived from a polyfunctional (meth)acrylate having no more than 5 functions. An electrode is prepared using this binder and is used in a battery such as a lithium-ion secondary battery.

Binder for battery electrode and electrode and battery using same

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Osaka, Japan

Tomoyuki Yano