公开(公告)号：US10784506B1

公开(公告)日：2020-09-22

申请号：US16113090

申请日：2018-08-27

Applicant: Apple Inc.

Inventor： Shawn W. Snyder ,  Damon E. Lytle ,  Jeffrey J. Kelly ,  Ronald D. Brost ,  Sandeep Rekhi ,  Bernd Jurgen Neudecker ,  Terry Tiegs

IPC: H01M4/36 ,  H01M4/48 ,  H01M4/525 ,  H01M10/052 ,  H01M4/38 ,  H01M10/0585 ,  H01M4/505 ,  H01M4/485

Abstract: A cathode for a solid-state battery comprises a composite cathode active material formed of a layered lithium cobalt oxide (LCO) in a solid solution matrix of lithium oxide (Li2O) and a cobalt oxide phase. For example, the composite cathode active material can be layered LCO in a solid solution matrix of one of Li2O—LixCo1-xO—Co3O4, Li2O—LixCo1-xO and Li2O—Co3O4, with 0≤x≤0.5. The LCO is at least 80 wt. % of the composite cathode active material. The cathode is a sintered solid-state cathode wafer that is free-standing, upon which solid-state battery cells are fabricated.