Carbon material lithium metal composite negative electrode and preparation method and application thereof

The invention discloses a carbon material lithium metal composite negative electrode and a preparation method and application thereof, and the carbon material lithium metal composite negative electrode is formed by compounding a carbon material three-dimensional current collector which is constructed on the surface of a copper foil and is subjected to surface modification treatment with lithium metal. According to the preparation method of the carbon material lithium metal composite negative electrode, the lithium affinity of a carbon material three-dimensional current collector is improved by performing surface treatment on a carbon material, so that the cycling stability of the carbon material lithium metal composite negative electrode is improved. According to the application of the carbon material lithium metal composite negative electrode, the carbon material lithium metal composite negative electrode and a positive electrode material are assembled into a lithium metal battery; or the composite material