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1. (WO2018221442) POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

Pub. No.:    WO/2018/221442    International Application No.:    PCT/JP2018/020304
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue May 29 01:59:59 CEST 2018
IPC: H01M 4/525
H01M 4/36
H01M 4/505
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
住友化学株式会社
TANAKA CHEMICAL CORPORATION
株式会社田中化学研究所
Inventors: KAGEURA Jun-ichi
影浦 淳一
MAEDA Yusuke
前田 裕介
Title: POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY
Abstract:
This positive electrode active material for a lithium secondary battery comprises secondary particles that are formed by aggregation of primary particles capable of doping and dedoping lithium ions, wherein the secondary particles show a pore distribution, as measured by a mercury intrusion method, in which the total specific surface area of pores having a pore size of 10-50 nm is 0.27-0.90 m2/g.