Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/192645
Kind Code:
A1
Abstract:
This lithium secondary battery is provided with a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte having lithium ion conductivity. Lithium metal deposits on the negative electrode at the time of charging, and the lithium metal is dissolved from the negative electrode at the time of discharging. A spacer is provided between the separator and the positive electrode and/or the negative electrode. A first length of the separator in a first direction D1 is smaller than a second length thereof in a second direction D2 intersecting with the first direction D1. In a cross section of the spacer taken along the first direction D1 and the thickness direction of the separator, the angle on the spacer side formed by the separator and the spacer, and/or the angle on the spacer side formed by the spacer and an electrode being in contact with the spacer, is more than 90°.
Inventors:
OKANO TETSUYUKI
Application Number:
PCT/JP2021/004043
Publication Date:
September 30, 2021
Filing Date:
February 04, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/40; H01M10/052; H01M10/0568; H01M10/0587; H01M50/40; H01M50/463
Foreign References:
| JP2000268813A | 2000-09-29 | |||
| JPS59181587U | 1984-12-04 | |||
| JP2016115393A | 2016-06-23 | |||
| JPH0391663U | 1991-09-18 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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