Title:
LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE, LITHIUM SECONDARY BATTERY, AND METHOD FOR PRODUCING LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/264992
Kind Code:
A1
Abstract:
This lithium secondary battery positive electrode active material has a value of 0.4-2.6 g/m2 for {Li(A)/(Ni + M)}/PS, where: PS is the BET specific surface area of the lithium secondary battery positive electrode active material as measured by the nitrogen adsorption method, and Li(A)/(Ni + M) is the atomic ratio calculated, with reference to the spectrum obtained by x-ray photoelectron spectroscopic measurement of the particle surface of the lithium secondary battery positive electrode active material, from a peak originating with an element M, a peak originating with the element Ni, and a peak (A) where a peak X originating with the element Li and having a peak top at 54.5 ± 3.0 eV is present and this peak X originating with the element Li is waveform separated into said peak (A) having a peak top at 53.5 ± 1.0 eV and a peak (a) having a peak top at 55.5 ± 1.0 eV.
Inventors:
INOUE MASASHI (JP)
Application Number:
PCT/JP2022/023720
Publication Date:
December 22, 2022
Filing Date:
June 14, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/131; H01M4/505
Domestic Patent References:
| WO2020208874A1 | 2020-10-15 |
Foreign References:
| JP2017228516A | 2017-12-28 | |||
| JP2007242288A | 2007-09-20 | |||
| JP2019102439A | 2019-06-24 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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