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1. (WO2018199072) LITHIUM ION SECONDARY BATTERY

Pub. No.:    WO/2018/199072    International Application No.:    PCT/JP2018/016566
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: H01M 10/0567
H01M 4/13
H01M 10/052
H01M 10/058
Applicants: NEC CORPORATION
日本電気株式会社
Inventors: OTOHATA, Makihiro
乙幡 牧宏
YOSHIDA, Noboru
吉田 登
Title: LITHIUM ION SECONDARY BATTERY
Abstract:
The purpose of the present invention is to provide a lithium ion secondary battery in which an increase in internal resistance is suppressed and a halogenated cyclic anhydride is used in an electrolyte additive. The lithium ion secondary battery according to the present invention is characterized by comprising a positive electrode formed with a porous layer including an insulating filler, and an electrolyte comprising 0.005 to 10 wt% of the halogenated cyclic anhydride.