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Title:
ALUMINUM-NICKEL CO-DOPED COBALT CARBONATE PRECURSOR, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/060504
Kind Code:
A1
Abstract:
Disclosed herein are an aluminum-nickel co-doped cobalt carbonate precursor, a preparation method therefor, and use thereof, and the present application belongs to the technical field of lithium-ion batteries. In the present application, a spherical cobalt carbonate seed crystal with good Al doping uniformity is first prepared by using a cobalt salt solution, an aluminum salt solution, and a high-concentration ammonium hydrogen carbonate solution; the cobalt salt solution, a nickel salt solution, the aluminum salt solution, and a low-concentration ammonium hydrogen carbonate solution are then added; and a sheet-shaped aluminum-nickel co-doped cobalt carbonate precursor is obtained. The preparation method not only reduces the low-capacity risk caused by simply improving the Al content and the risk of nucleation in the later stage of the synthesis process, but also improves the yield of the product and the distribution uniformity of an aluminum-nickel element in the aluminum-nickel co-doped cobalt carbonate precursor.

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Inventors:
LIU GENGHAO (CN)
LI CHANGDONG (CN)
RUAN DINGSHAN (CN)
XIN YONGCHENG (CN)
LU XINGHUA (CN)
ZHOU SIYUAN (CN)
Application Number:
PCT/CN2023/077140
Publication Date:
March 28, 2024
Filing Date:
February 20, 2023
Export Citation:
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Assignee:
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD (CN)
HUNAN BRUNP RECYCLING TECH CO LTD (CN)
International Classes:
C01G51/00; C01G51/04; C01G53/00; H01M4/525; H01M10/0525
Foreign References:
CN115504516A2022-12-23
CN113772746A2021-12-10
CN113753967A2021-12-07
CN113830839A2021-12-24
CN102694166A2012-09-26
CN114573042A2022-06-03
CN111717938A2020-09-29
JP2007091502A2007-04-12
Other References:
LIU, RENSHENG ET AL.: "Improving the Homogeneity of Aluminum Doped Co3O4", WORLD NONFERROUS METALS, no. 7, 30 April 2018 (2018-04-30)
Attorney, Agent or Firm:
BEIJING YZH IP FIRM et al. (CN)
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