Title:
PRECURSOR POWDER, POSITIVE ELECTRODE ACTIVE MATERIAL POWDER, POSITIVE ELECTRODE ACTIVE MATERIAL POWDER PRODUCTION METHOD, POSITIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/090452
Kind Code:
A1
Abstract:
A precursor powder used as a precursor of a positive electrode active material for a lithium secondary battery, said precursor powder having a plurality of particles with pores, and a filling compound with which the pores are filled, wherein the particles have a layered structure and are composed of a metal complex compound including at least Ni, the filling compound is one or both of a water-soluble tungsten compound and a water-soluble molybdenum compound, and the precursor powder satisfies formula (1). (1) 10≤(P1-P2)/P1×100<100... (P1: the maximum peak value, in the pore diameter distribution of the washed precursor powder, of the log differential pore volume in an area in which the pore diameter is at most 10 nm. P2: the value, in the pore diameter distribution of the precursor powder, of the log differential pore volume at the pore diameter of the peak exhibiting P1.)
Inventors:
INOUE MASASHI (JP)
Application Number:
PCT/JP2022/043098
Publication Date:
May 25, 2023
Filing Date:
November 22, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/505
Domestic Patent References:
| WO2019187953A1 | 2019-10-03 | |||
| WO2020085283A1 | 2020-04-30 | |||
| WO2009031619A1 | 2009-03-12 |
Foreign References:
| JP2009117261A | 2009-05-28 | |||
| JP2018129221A | 2018-08-16 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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