Title:
MANGANESE-DOPED COBALT CARBONATE, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/031792
Kind Code:
A1
Abstract:
The present invention belongs to the field of battery materials. Provided are manganese-doped cobalt carbonate, a preparation method therefor, and use thereof. The preparation method for the manganese-doped cobalt carbonate is mainly based on a wet synthesis system. When a manganese-doped cobalt carbonate seed crystal is generated for the first time, it is directly crushed to a specific particle size by means of a wet method, and then the manganese-doped cobalt carbonate seed crystal is mixed with an original mother solution to keep a particle growth environment before wet crushing and continue the growth of particles by means of wet precipitation, so that irregular soft agglomeration caused by excessively high precipitation rate of the manganese element is effectively avoided. Moreover, in the preparation method, ammonium citrate and ammonium bicarbonate are compounded to be jointly selected as a precipitant, so that cobalt and manganese elements in the wet synthesis system can be effectively complexed and released slowly and uniformly. When ammonium citrate is adsorbed on the surface of the generated particle, one negative charge layer can be generated on the surface of the particle, thereby further preventing the agglomeration of the particles generated by the system. The introduction of ammonium citrate can also avoid excessive oxidation of the doped divalent manganese element.
Inventors:
LU XINGHUA (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
LIU GENGHAO (CN)
ZHOU SIYUAN (CN)
XU JIANFENG (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
LIU GENGHAO (CN)
ZHOU SIYUAN (CN)
XU JIANFENG (CN)
Application Number:
PCT/CN2022/120629
Publication Date:
February 15, 2024
Filing Date:
September 22, 2022
Export Citation:
Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
C01G51/04; C01G51/06; H01M4/52
Foreign References:
| CN113716619A | 2021-11-30 | |||
| CN112661199A | 2021-04-16 | |||
| CN108217753A | 2018-06-29 | |||
| CN114804222A | 2022-07-29 | |||
| JP2004010375A | 2004-01-15 | |||
| US20110280778A1 | 2011-11-17 | |||
| US20100135897A1 | 2010-06-03 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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