Binder composition for electrode of nonaqueous electrolyte battery, and electrode mixture, electrode and battery using same

Abstract

By using a composition comprising at least a vinylidene fluoride polymer containing a functional group and a polar polymer containing a hydroxyl group and / or a carbonyl group in the molecule as a binder for an electrode (positive electrode / or negative electrode) active material, the nonaqueous electrolysis can be maintained. The necessary high capacity of the liquid battery, and at the same time improve the stability of its performance and the safety of internal short circuit.

Description

technical field

[0001] The invention relates to an electrode binder for preparing a nonaqueous electrolyte battery, especially a lithium ion battery, an electrode mixture using the binder, an electrode and a nonaqueous electrolyte battery using the electrode. Background technique

[0002] With the rapid development of electronic technology in recent years, all kinds of equipment are constantly developing in the direction of miniaturization and light weight. With the development of electronic equipment in the direction of miniaturization and weight reduction, the miniaturization and weight reduction of batteries as its power sources are also highly desired. Non-aqueous secondary batteries using lithium have been used mainly as power sources for small household electronic devices such as mobile phones, personal computers, and video recorders as batteries that can obtain greater energy with a smaller volume and lighter weight.

[0003] The active material and conductive agent ...

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