Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CATHODE COMPOSITION TO PREVENT OVER-DISCHARGE OF Li4Ti5O12 BASED LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/023527
Kind Code:
A1
Abstract:
A lithium-ion battery is disclosed which uses lithium titanate as the anode material in the discharge of the cell (s) of the battery and a mixture of lithium manganese oxide (LMO) with a minor portion of a selected lithium-additional metal element-oxygen compound as the cathode material. The selected lithium compound is compatible with the lithium manganese oxide as a cathode material and has a lower and useful discharge potential than the LMO at the end of the discharge cycle of the cell. The electrode materials are used in combination with a non-aqueous solution of a lithium salt electrolyte. Damage to the electrode materials by over-discharge of the cell can be minimized by utilizing a predetermined portion of the selected lithium compound in mixture with lithium manganese oxide which provides additional capacity for self-discharge of the cell after it has reached a predetermined degree of discharge.

Inventors:
LIU, Jianyong (202 Number 3 Building, 44 Jinkou RoadPudong, Shanghai 6, 201206, CN)
WU, Qiang (No. 588 Zhangyang North Road, Pudong District, Shanghai 6, 201206, CN)
YU, Zhiqiang (56 Jinwan Road, Apartment Number 35-902Pudong, Shanghai 6, 201206, CN)
Application Number:
CN2016/093193
Publication Date:
February 08, 2018
Filing Date:
August 04, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC (300 Renaissance Center, Mail Code 482-c23-b21Detroit, Michigan, 48265-3000, US)
LIU, Jianyong (202 Number 3 Building, 44 Jinkou RoadPudong, Shanghai 6, 201206, CN)
International Classes:
H01M4/131
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (22/F, Great Eagle Center23 Harbour Road, Wanchai, Hong Kong, Kong, CN)
Download PDF: