Multilayer current collector and method for manufacturing the same

JP7873736B2Active Publication Date: 2026-06-12YANGZHOU NANOPORE INNOVATIVE MATERIALS TECH LTD
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Patent Information

Application Number
JP2024567565
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-06-02
Filing Date
2023-05-15
Publication Date
2026-06-12
Estimated Expiration
2043-05-15

AI Technical Summary

Technical Problem

Current current collectors in secondary batteries suffer from reduced electron transport due to high porosity and increased sheet resistance caused by multiple deposition layers, leading to decreased battery performance and mechanical integrity.

Method used

A multilayer current collector design with alternating carbon coating and metal plating layers on both surfaces of a polymer thin film, where the outermost and innermost layers are carbon coating layers, reducing the number of deposition cycles and maintaining mechanical properties.

Benefits of technology

The design effectively lowers porosity and sheet resistance, enhances conductivity and mechanical strength, and improves adhesion, ensuring better battery performance and stability.

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Patent Text Reader

Abstract

The present invention relates to a multi-layered current collector and a manufacturing method thereof. The multi-layered current collector includes a thin polymer layer, and a laminate is provided on each of two opposite surfaces of the thin polymer layer, and the laminate includes a carbon coating layer and a metal plating layer that are alternately provided on each other.
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Citation Information

Patent Citations

  • Ultra-light multi-layer composite current collector and preparation method thereof

    CN112151806A

  • Current collector with multi-layer structure, preparation method of current collector, battery with current collector and object

    CN112670519A

  • Membranes and Manufacturing Processes

    JP2022512978A