Title:
PREPARATION METHOD FOR LOW-SULFUR TERNARY POSITIVE ELECTRODE PRECURSOR MATERIAL WITH HIGH SPECIFIC SURFACE AREA
Document Type and Number:
WIPO Patent Application WO/2024/011751
Kind Code:
A1
Abstract:
A preparation method for a low-sulfur ternary positive electrode precursor material with a high specific surface area, which belongs to the field of lithium-ion battery materials. A continuous filter with a spraying device is used for concentrating reaction materials, such that sulfur impurities can be uniformly removed in a reaction stage, the reaction environment and the production efficiency are not influenced, and no new impurities are introduced; a mother liquor is removed by means of suction filtration at a negative pressure, such that the materials can be uniformly and controllably oxidized, the specific surface area of the ternary positive electrode precursor material is uniformly increased, and lithium ions can more easily enter the interior of particles of the ternary positive electrode precursor material during sintering, thereby yielding a higher capacity; an alkali liquor used in spraying can be recycled, thereby reducing washing water, alkali consumption and wastewater discharge.
Inventors:
FANG ZHENQI (CN)
LI CHANGDONG (CN)
LIU GENGHAO (CN)
RUAN DINGSHAN (CN)
SHI QIANQIAN (CN)
LI CHANGDONG (CN)
LIU GENGHAO (CN)
RUAN DINGSHAN (CN)
SHI QIANQIAN (CN)
Application Number:
PCT/CN2022/120617
Publication Date:
January 18, 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:
C01G53/00; H01M4/505; H01M4/525; H01M10/0525
Foreign References:
| CN112713269A | 2021-04-27 | |||
| CN105304864A | 2016-02-03 | |||
| CN112582605A | 2021-03-30 | |||
| CN114573052A | 2022-06-03 | |||
| JP2018070442A | 2018-05-10 | |||
| US20140322604A1 | 2014-10-30 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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