Title:
PRE-LITHIATED COATED LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/179051
Kind Code:
A1
Abstract:
Disclosed are a pre-lithiated coated lithium cobalt oxide positive electrode material and a preparation method therefor. The preparation method comprises the following steps: (1) adding lithium cobalt oxide into absolute ethyl alcohol, and mixing; (2) adding tin tetrachloride and lithium hydroxide into the mixed solution of step (1), and adding a carbon source for mixing; (3) evaporating the mixed solution obtained in step (2) to dryness; and (4) calcining the dried material in step (3) in an oxygen-containing atmosphere, cooling, washing, and drying to obtain the product. The positive electrode material prepared by the method has excellent conductive performance and cycle performance.
Inventors:
YU HAIJUN (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
XIE YINGHAO (CN)
LI AIXIA (CN)
ZHANG XUEMEI (CN)
LI CHANGDONG (CN)
Application Number:
PCT/CN2022/131697
Publication Date:
September 28, 2023
Filing Date:
November 14, 2022
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP EV RECYCLING CO LTD (CN)
International Classes:
H01M4/525; H01M10/0525
Foreign References:
| CN114709387A | 2022-07-05 | |||
| CN113299915A | 2021-08-24 | |||
| JP2014099295A | 2014-05-29 | |||
| CN102623694A | 2012-08-01 | |||
| CN104112854A | 2014-10-22 | |||
| US5567539A | 1996-10-22 |
Other References:
HU GUORONG, ZHANG MANFANG, WU LILI, PENG ZHONGDONG, DU, CAO YANBING: "Enhanced Electrochemical Performance of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Cathodes Produced via Nanoscale Coating of Li + -Conductive Li 2 SnO 3", ELECTROCHIMICA ACTA, ELSEVIER, AMSTERDAM, NL, vol. 213, 1 September 2016 (2016-09-01), AMSTERDAM, NL , pages 547 - 556, XP009549320, ISSN: 0013-4686, DOI: 10.1016/j.electacta.2016.07.154
CAO, Q. ET AL.: "A novel carbon-coated LiCoO2 as cathode material for lithium ion battery", ELECTROCHEMISTRY COMMUNICATIONS, vol. 9, no. 5, 17 January 2007 (2007-01-17), XP022047135, ISSN: 1388-2481, DOI: 10.1016/j.elecom.2007.01.017
CAO, Q. ET AL.: "A novel carbon-coated LiCoO2 as cathode material for lithium ion battery", ELECTROCHEMISTRY COMMUNICATIONS, vol. 9, no. 5, 17 January 2007 (2007-01-17), XP022047135, ISSN: 1388-2481, DOI: 10.1016/j.elecom.2007.01.017
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
Download PDF: