Nonaqueous electrolyte rechargeable battery - TOYOTA JIDOSHA KABUSHIKI KAISHA

Title:

Nonaqueous electrolyte rechargeable battery

Document Type and Number:

Japanese Patent JP6079696

Kind Code:

B2

Abstract:

A non-aqueous electrolyte secondary battery includes: a pressure-type current interrupt device arranged in a conductive path, for interrupting the conductive path when an internal pressure exceeds a working pressure; a non-aqueous electrolyte; and a positive electrode composite material layer. The non-aqueous electrolyte contains a gas generation agent that generates a gas in an overcharge region, and the positive electrode composite material layer contains a first positive electrode active material particle including lithium iron phosphate, and a second positive electrode active material particle including lithium-nickel composite oxide. A ratio of the first positive electrode active material particle to a total mass of the first positive electrode active material particle and the second positive electrode active material particle is 5% by mass or more and 20% by mass or less.

Inventors:

Hiroya Umeyama
Akihiro Taniguchi
Hideki Sano
Hideaki Fujita

Application Number:

JP2014103327A

Publication Date:

February 15, 2017

Filing Date:

May 19, 2014

Export Citation:

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