公开(公告)号：US20170194626A1

公开(公告)日：2017-07-06

申请号：US15314736

申请日：2015-06-25

Applicant: TODA KOGYO CORP.

Inventor： Takayuki YAMAMURA ,  Tetsuya KASHIMA ,  Ryuta MASAKI ,  Kazumichi KOGA

IPC: H01M4/131 ,  H01M10/052 ,  H01M4/04 ,  H01M4/52 ,  H01M4/525 ,  H01M4/1391 ,  H01M4/505

CPC classification number: H01M4/131 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/82 ,  C01P2006/12 ,  H01M4/049 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/483 ,  H01M4/505 ,  H01M4/523 ,  H01M4/525 ,  H01M10/052

Abstract: An object of the present invention is to provide positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in D.C. resistance characteristics under low-temperature conditions and a process for producing the provide positive electrode active substance particles, and a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising lithium composite oxide particles having a layered rock salt structure which are chemically reacted with at least Li and comprise at least one element selected from the group consisting of Ni, Co and Mn, and tungsten oxide particles, in which W is present in an amount of 0.1 to 4.0 mol % based on a total molar amount of Ni, Co and Mn in the lithium composite oxide particles, and the tungsten oxide particles have an average secondary particle diameter of 0.1 to 3.0 μm.