Conductive film, pole piece, energy storage device, electrical equipment and conductive film preparation method

By inserting low melting point isolation particles on the surface of the metal layer of the conductive film, the delamination defect caused by the metal layer is solved, and the high-quality finished product and operating performance of the conductive film are improved.

CN118675798BActive Publication Date: 2025-05-02CHONGQING JIMAT NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202410739997.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-05-02
Estimated Expiration
2044-06-07

AI Technical Summary

Technical Problem

The metal layers on both sides of the base film of the composite fluid collector are prone to stick to each other, resulting in the film rolling failure of the film layer during unwinding, resulting in delamination defects.

Method used

Separation particles are embedded on the surface of at least one of the first metal layer and the second metal layer of the conductive film to reduce the bonding force between the metal layers and prevent sticking. The isolation particles may be metal or non-metallic particles different from the metal layer and have a particle structure with a low melting point.

Benefits of technology

By embedding isolation particles, the metal layers of the conductive film are prevented from sticking to each other, ensuring that each metal layer maintains independence during processing, storage and transportation, avoid delamination defects, and improve the finished product quality of the conductive film.

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Abstract

The present invention discloses a conductive film, a pole piece, an energy storage device, an electrical device and a method for preparing the conductive film. The conductive film comprises a substrate layer, a first metal layer and a second metal layer. Along a first direction, the substrate layer comprises a first surface and a second surface; the first metal layer is arranged on the first surface; the second metal layer is arranged on the second surface; wherein, at least one of the first metal layer and the second metal layer is embedded with isolation particles on a surface away from the substrate layer, and the isolation particles are used to isolate the first metal layer from the second metal layer. The present invention solves the problem that the metal layers on the two sides of the substrate film are prone to mutual adhesion.
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Citation Information

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