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1. (WO2013161774) LITHIUM SECONDARY BATTERY

Pub. No.:    WO/2013/161774    International Application No.:    PCT/JP2013/061812
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Tue Apr 23 01:59:59 CEST 2013
IPC: H01M 10/0569
H01M 4/505
H01M 4/525
H01M 4/58
H01M 10/052
H01M 10/0567
Applicants: NEC CORPORATION
日本電気株式会社
Inventors: KATOU, Yuukou
加藤 有光
NOGUCHI, Takehiro
野口 健宏
SASAKI, Hideaki
佐々木 英明
TAKAHASHI, Makiko
高橋 牧子
SAITHO, Shinsaku
齊藤 信作
Title: LITHIUM SECONDARY BATTERY
Abstract:
The lithium secondary battery of an embodiment includes a positive electrode including a positive active material and an electrolytic solution including a nonaqueous electrolytic solvent, and is characterized in that the positive active material works at a potential of 4.5 V or higher with respect to lithium and that the electrolytic solution comprises both a nonaqueous electrolytic solvent which comprises a fluorinated phosphoric ester represented by a given formula and a cyclic sulfonic ester represented by a given formula.