This technology realizes a 3D-structured anode current collector that achieves both mechanical flexibility and electrochemical stability. It secures electrical conductivity by introducing a multi-layered carbon nanotube (CNT) assembly and metal nanoparticles onto the surface of an insulating fabric substrate, followed by the formation of a copper layer via electroplating.
Conventional non-porous metal foil current collectors suffer from low mechanical flexibility and poor rate performance, while existing conductive fabric current collectors are limited by low electrical conductivity, high contact resistance, and insufficient interfacial bonding, which hinder long-term stability and electrochemical performance.
This technology functionalizes a fabric substrate through layer-by-layer (LbL) assembly and hydrogen bonding of carbon nanotubes and metal nanoparticles. By subsequently electroplating copper at 100–500 mA/cm² to form a uniform metal layer, it provides a practical solution for enhancing the commercial competitiveness of secondary battery anode materials.
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