二次電池用非水電解液およびリチウムイオン二次電池

Title:

二次電池用非水電解液およびリチウムイオン二次電池

Document Type and Number:

Japanese Patent JP6299603

Kind Code:

B2

Abstract:

To provide a non-aqueous electrolyte solution for secondary batteries, which has a low reactivity with a positive electrode and a negative electrode and which is excellent in stability to prevent thermal runaway of a secondary battery and excellent also in battery properties such as cycle properties and rate properties, and a lithium ion secondary battery employing such a non-aqueous electrolyte solution. A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt composed of a specific complex such as lithium difluoro(oxalato) borate, a fluorinated solvent (A) containing at least one member selected from the group consisting of a fluorinated ether compound, a fluorinated chain carboxylic acid ester compound and a fluorinated chain carbonate compound, and a cyclic carboxylic acid ester compound (B); and a lithium ion secondary battery employing such a non-aqueous electrolyte solution.

Inventors:

Yu Onozaki
Masao Iwatani

Application Number:

JP2014543289A

Publication Date:

March 28, 2018

Filing Date:

October 21, 2013

Export Citation:

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