Invention Grant
- Patent Title: Positive active material for lithium secondary battery, precursor of positive active material, electrode for lithium secondary battery and lithium secondary battery
- Patent Title (中): 锂二次电池正极活性物质，正极活性物质前驱体，锂二次电池用电极和锂二次电池
-
Application No.: US13914907Application Date: 2013-06-11
-
Publication No.: US09105924B2Publication Date: 2015-08-11
- Inventor: Daisuke Endo , Hiromasa Muramatsu
- Applicant: GS YUASA INTERNATIONAL LTD.
- Applicant Address: JP Kyoto
- Assignee: GS YUASA INTERNATIONAL LTD.
- Current Assignee: GS YUASA INTERNATIONAL LTD.
- Current Assignee Address: JP Kyoto
- Agency: Rankin, Hill & Clark LLP
- Priority: JP2012-138419 20120620; JP2012-138638 20120620; JP2013-051267 20130314
- Main IPC: H01M4/505
- IPC: H01M4/505 ; H01M4/48 ; H01M4/525 ; C01G53/00 ; H01M10/052
Abstract:
Provided is a positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an α-NaFeO2-type crystal structure and represented by the composition formula of Li1+αMe1−αO2 (Me is a transition metal including Co, Ni and Mn and α>0). The positive active material contains Na in an amount of 900 ppm or more and 16000 ppm or less, or K in an amount of 1200 ppm or more and 18000 ppm or less.
Public/Granted literature
Information query
