Title:
POWER STORAGE ELEMENT AND POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/032752
Kind Code:
A1
Abstract:
A power storage element according to an aspect of the present invention comprises a positive electrode, which has a positive electrode active material layer containing a positive electrode active material, and a non-aqueous electrolyte, wherein: the positive electrode active material contains a transition metal element and also contains a polyanion compound having a surface of which at least a part is covered with carbon; the ratio of a second BET specific surface area, which is the BET specific surface area of the carbon, to a first BET specific surface area, which is the BET specific surface area of the positive electrode active material layer, is greater than 10% and less than 35%; and the non-aqueous electrolyte contains a sulfur element-free electrolyte salt and a sulfur-based compound.
Inventors:
ENDO DAISUKE (JP)
Application Number:
PCT/JP2022/031696
Publication Date:
March 09, 2023
Filing Date:
August 23, 2022
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M10/0525; H01M4/136; H01M4/36; H01M4/58; H01M10/0567; H01M10/0568
Domestic Patent References:
| WO2020026914A1 | 2020-02-06 |
Foreign References:
| JP2016012458A | 2016-01-21 | |||
| CN103715452A | 2014-04-09 | |||
| JP2022134613A | 2022-09-15 |
Download PDF: