Title:
LAYERED LITHIUM-MANGANESE-RICH POSITIVE ELECTRODE MATERIAL WITH OLIVINE STRUCTURE LIMPO4 SURFACE MODIFICATION AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/166863
Kind Code:
A1
Abstract:
The present invention discloses a layered lithium-manganese-rich positive electrode material with olivine structure LiMPO4 surface modification and manufacturing method thereof. The manufacturing method comprises: using a co-precipitation and high temperature sintering to manufacture a pure phase layered lithium-manganese-rich positive electrode material; and using a sol-gel process to apply a uniform coating of olivine structure LiMPO4 on the surface of a layered lithium-manganese-rich composite electrode material. The invention applies a surface modification of an olivine structure LiMPO4 to a layered lithium-manganese-rich positive electrode material to effectively improve a cycling stability of the material and suppress a voltage drop of the material during a cycling process. The invention provides a simple, low cost, and environmentally friendly manufacturing method applicable for large scale industrial production.
Inventors:
YANG CHENGHAO (CN)
ZHENG FENGHUA (CN)
XIONG XUNHUI (CN)
LIU MEILIN (CN)
ZHENG FENGHUA (CN)
XIONG XUNHUI (CN)
LIU MEILIN (CN)
Application Number:
PCT/CN2016/109096
Publication Date:
October 05, 2017
Filing Date:
December 08, 2016
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H01M4/58; H01M4/505; H01M10/0525
Foreign References:
| CN105742622A | 2016-07-06 | |||
| CN103035906A | 2013-04-10 | |||
| CN103682304A | 2014-03-26 | |||
| CN105304855A | 2016-02-03 |
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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