Title:
POSITIVE ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/120493
Kind Code:
A1
Abstract:
A positive electrode for secondary batteries according to one embodiment of the present disclosure is provided with a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector, and is characterized in that: the positive electrode mixture layer contains a positive electrode active material A which is composed of single crystalline particles of a lithium-containing composite oxide and a positive electrode active material B which is composed of polycrystalline particles of a lithium-containing composite oxide; the positive electrode active material A has a carbonaceous coating film that covers the surface of each of the single crystalline particles; the coating amount of the carbonaceous coating film covering the surfaces of the single crystalline particles is 1% by mass to 10% by mass relative to the mass of the lithium-containing composite oxide of the single crystalline particles; and with respect to the positive electrode active material B, the surfaces of the polycrystalline particles are not covered by a carbonaceous coating film.
Inventors:
URATA SHO
Application Number:
PCT/JP2022/046745
Publication Date:
June 29, 2023
Filing Date:
December 19, 2022
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M4/131; H01M4/36; H01M4/505; H01M4/525
Foreign References:
| CN113113610A | 2021-07-13 | |||
| CN113036115A | 2021-06-25 | |||
| CN111916845A | 2020-11-10 | |||
| JPH0737576A | 1995-02-07 | |||
| JP2018045998A | 2018-03-22 | |||
| JP2020053386A | 2020-04-02 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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