公开(公告)号：US20190198870A1

公开(公告)日：2019-06-27

申请号：US16327015

申请日：2017-08-21

Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION

Inventor： Satoru WATANO ,  Hideya NAKAMURA

IPC: H01M4/40 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/0562 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587

CPC classification number: H01M4/405 ,  H01M4/36 ,  H01M4/40 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/054 ,  H01M10/0562 ,  H01M2004/028 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A composite positive electrode active material for an all-solid-state secondary battery containing particles of a positive electrode active material and a sulfide-based solid electrolyte layer coating surfaces of the particles, wherein the composite positive electrode active material has an average roundness that is 1.3 times or more of that of a positive electrode active material at an inner core of the composite positive electrode active material.