Title:
METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/095975
Kind Code:
A1
Abstract:
This method for manufacturing a positive electrode active material for a lithium-ion secondary battery includes: a mixing step for mixing a lithium compound and a nickel-containing substance which contains at least nickel to prepare a first raw material mixture; a firing step for firing the first raw material mixture in an oxidizing atmosphere to obtain a fired product; a water washing step for washing with water the fired product obtained in the firing step to obtain a water-washed powder; a boron addition step for mixing the water-washed powder obtained in the water washing step and a boron-containing substance which is at least one selected from elemental boron and a boron compound to prepare a second raw material mixture; a heat treatment step for performing heat treatment on the second raw material mixture; and a cooling step for, after the heat treatment, cooling the mixture in an atmosphere which is used as a decarboxylation atmosphere in a temperature range that includes or is below a boundary temperature.
Inventors:
KOSHIKA YUKI (JP)
TSUCHIDA SHOTA (JP)
TSUCHIDA SHOTA (JP)
Application Number:
PCT/JP2023/039137
Publication Date:
May 10, 2024
Filing Date:
October 30, 2023
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/505
Foreign References:
| JP2015225741A | 2015-12-14 | |||
| JP2020166931A | 2020-10-08 | |||
| JP2017134996A | 2017-08-03 | |||
| JP2004335278A | 2004-11-25 | |||
| JP2021150129A | 2021-09-27 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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