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1. (WO2014192759) POSITIVE ELECTRODE ACTIVE MATERIAL

Pub. No.:    WO/2014/192759    International Application No.:    PCT/JP2014/064002
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Wed May 28 01:59:59 CEST 2014
IPC: H01M 4/505
H01M 4/525
Applicants: ASAHI GLASS COMPANY, LIMITED
旭硝子株式会社
Inventors: SAKAI, Tomohiro
酒井 智弘
TAKASUGI, Tsubasa
▲高▼杉 翼
TERATANI, Takuya
寺谷 拓也
Title: POSITIVE ELECTRODE ACTIVE MATERIAL
Abstract:
Provided is a positive electrode active material having a high discharge capacity and excellent cycle characteristics. The positive electrode active material is characterized by: being represented by LiaMOx (wherein, M is an element that includes at least one type of element selected from nickel, cobalt and manganese (but does not include lithium or oxygen); a is 1.1 to 1.7; and x is the number of moles of oxygen required to satisfy the valences of lithium and M); and having a ratio (l/r) of a crystallite diameter (l) of the (003) plane to a crystallite diameter (r) of the (110) plane belonging to a crystal of an R-3m space group of 2.6 or higher in X-ray diffraction patterns.