Title:
HIGH RATE LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/206633
Kind Code:
A1
Abstract:
A high rate lithium cobalt oxide positive electrode material, comprising a multichannel mesh structure formed using a fast ion conductor LiαM'γOβ. The structure primarily consists of lithium cobalt oxide. The lithium cobalt oxide is provided as a primary granular form, and is then melt-blended with the fast ion conductor LiαM'γOβ to form a secondary granule. The lithium cobalt oxide is embedded within the multichannel mesh structure formed by the fast ion conductor LiαM'γOβ. For the LiαM'γOβ, M' is one or more of the following: Ti, Zr, Y, V, Nb, Mo, Sn, In, La, and W; and 1 ≤ α ≤ 4, 1 ≤ γ ≤ 5, and 2 ≤ β ≤ 12. The lithium cobalt oxide positive electrode material is primarily prepared by homogeneously mixing a lithium source with a cobalt oxide impregnated with a hydroxide of M', then placing the mixture in an air atmosphere furnace for high temperature reaction sintering to obtain the final product. The product provided by the invention significantly improves lithium ion conductivity in a lithium cobalt oxide positive electrode material of a lithium-ion battery during charging or discharging, thereby improving a rate performance of the material.
Inventors:
DONG HONG (CN)
HU XUYAO (CN)
JIANG XIANGKANG (CN)
TAN XINXIN (CN)
LI XU (CN)
HU XUYAO (CN)
JIANG XIANGKANG (CN)
TAN XINXIN (CN)
LI XU (CN)
Application Number:
PCT/CN2017/082231
Publication Date:
December 07, 2017
Filing Date:
April 27, 2017
Export Citation:
Assignee:
HUNAN SHANSHAN ENERGY TECH CO LTD (CN)
International Classes:
H01M4/525; C01G51/00; H01M10/0525
Foreign References:
| CN104282880A | 2015-01-14 | |||
| CN105870441A | 2016-08-17 | |||
| CN103201222A | 2013-07-10 |
Other References:
See also references of EP 3467915A4
Attorney, Agent or Firm:
CHANGSHA ZONEYOUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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