Composite current collector having metal three-dimensional network structure, preparation method for composite current collector, and electrode plate and battery

Abstract

The present disclosure provides a composite collector having a metal three-dimensional network structure, a preparation method for the composite collector, an electrode plate and a battery. The composite current collector includes a substrate layer and two metal layers respectively arranged on two sides of the substrate layer. The substrate layer is composed of a polymer backbone and a filling region. The polymer backbone has interconnecting channels, and the channels are filled with a metal material filler, thereby forming a continuous metal three-dimensional network structure. Such structure not only provides a plurality of current channels provided for electrons, achieving a smaller sheet resistance and a relatively strong conductivity of the composite current collector, but also allows the metal three-dimensional network structure to be in contact with the metal layers on two sides and thereby forms a unit.

Dependencies are inferred from the claim text.