Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/176503
Kind Code:
A1
Abstract:
A positive electrode mixture layer of this non-aqueous electrolyte secondary battery includes a positive electrode active material and a cellulose derivative. The positive electrode active material contains a lithium-transition metal composite oxide containing 80 mol% or more of Ni with respect to the total number of moles of metal elements except for Li. On each of the surfaces of primary particles of the lithium-transition metal compound oxide, a Me-containing layer containing a metal element Me (where Me represents at least one element selected from Nb, Sr, Mo, and Ca) and a W-containing layer containing W are formed. The contained amount of Me in the Me-containing layer is 0.005-1 mol% with respect to the total number of moles of metal elements except for Li in the lithium-transition metal composite oxide. The W-containing layer covers at least a part of the Me-containing layer.
Inventors:
MAEKAWA MASANORI
ICHIKAWA YUTA
ICHIKAWA YUTA
Application Number:
PCT/JP2023/008016
Publication Date:
September 21, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/62
Domestic Patent References:
| WO2020026508A1 | 2020-02-06 |
Foreign References:
| JP2019139862A | 2019-08-22 | |||
| JP2020064858A | 2020-04-23 | |||
| JPH1173970A | 1999-03-16 |
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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