Secondary battery, separator, and method for manufacturing separator
By employing solvent-free, energy ray-curable resin materials to form protrusions on the separator, the volume changes in the electrode group are managed, improving cycle and initial discharge capacity in secondary batteries.
WO2026141328A1PCT designated stage Publication Date: 2026-07-02PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2025-12-23
- Publication Date
- 2026-07-02
Smart Images
Figure JP2025044916_02072026_PF_FP_ABST
Abstract
A secondary battery according to the present invention comprises a positive electrode, a negative electrode, a separator, a spacer, and a nonaqueous electrolyte. The separator is disposed between the positive electrode and the negative electrode, and the spacer is disposed between the separator and the positive electrode and / or the negative electrode. The spacer includes a protrusion, and the protrusion includes a cured product of a curable resin material that is cured by irradiation with energy rays.
Need to check novelty before this filing date? Find Prior Art