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 JP5488768
Kind Code:
B2
Abstract:
The object is to provide a non-aqueous electrolyte solution for secondary batteries, which has excellent rate properties, excellent initial charge/discharge properties and excellent cycle properties, has a low reactivity with a positive electrode and a negative electrode, makes a secondary battery less susceptible to thermal runaway and further has sufficient conductivity, as well as a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries. A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt (total number of moles of lithium atoms: N Li ) and a liquid composition, wherein the liquid composition comprises a specific fluorinated solvent (±) and a cyclic carboxylic acid ester compound (total number of moles: N A ), and may contain a specific compound (²) (total number of moles: N B ), the content of the fluorinated solvent (±) is from 40 to 80 mass%, N A /N Li is from 1.5 to 7.0, and (N A +N B )/N Li is from 3 to 7.0. And, a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries.
Inventors:
Yu Onozaki
Toyoda Towa
Masao Iwatani
Toyoda Towa
Masao Iwatani
Application Number:
JP2013525070A
Publication Date:
May 14, 2014
Filing Date:
March 15, 2013
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
H01M10/0569; H01M10/052; H01M10/0567; H01M10/0568
Domestic Patent References:
| JPH0620719A | 1994-01-28 | |||
| JP2010086914A | 2010-04-15 | |||
| JP2005038722A | 2005-02-10 | |||
| JP2008521161A | 2008-06-19 | |||
| JP2008108454A | 2008-05-08 | |||
| JPH0620719A | 1994-01-28 |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai