Title:
BATTERY AND METHOD FOR PRODUCING SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/033741
Kind Code:
A1
Abstract:
With respect to a secondary battery, since a separator is expensive and requires cumbersome handling, a reduction in the production cost or simplification of the production process has been awaited. One embodiment of the present invention provides a secondary battery which has a novel configuration. By arranging a polymer-containing layer, which has a carboxy group, between a positive electrode active material layer and a negative electrode active material layer in a secondary battery, a short circuit between a positive electrode and a negative electrode is prevented. In addition, the polymer-containing layer has ion permeability that enables permeation of lithium ions, and prevents a short circuit due to dendrite. The polymer-containing layer does not have pores, but has ion permeability.
Inventors:
NAKAO TAISUKE (JP)
KIMURA MASAYUKI (JP)
OKUZAWA NAOTO (JP)
YAMAZAKI SHUNPEI (JP)
KIMURA MASAYUKI (JP)
OKUZAWA NAOTO (JP)
YAMAZAKI SHUNPEI (JP)
Application Number:
PCT/IB2023/057661
Publication Date:
February 15, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H01M10/058; H01M4/13; H01M4/139; H01M4/36; H01M4/38; H01M4/62; H01M50/42
Domestic Patent References:
| WO2017204077A1 | 2017-11-30 | |||
| WO2005078828A1 | 2005-08-25 | |||
| WO2011101987A1 | 2011-08-25 | |||
| WO2017175838A1 | 2017-10-12 |
Foreign References:
| JP2017117672A | 2017-06-29 | |||
| CN113013482A | 2021-06-22 | |||
| CN111430792A | 2020-07-17 | |||
| JP2000348730A | 2000-12-15 |
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