The invention discloses a
current collector material of a carbon-
phosphorus composite particle modified
copper foil and application of the
current collector material in a
lithium battery. According to the invention, a
lithium-loving induction layer composed of a carbon nano-material, a
phosphorus nano-material and a
polymer binder is constructed on the surface of a
copper foil
current collector. The carbon nanomaterial comprises carbon nanotubes,
graphene and the like, the
phosphorus nanomaterial comprises allotropes of red phosphorus,
black phosphorus and the like, and the
mass ratio of the carbon nanomaterial to the phosphorus nanomaterial is (1: 10)-(10: 1). The preparation method comprises the following steps: blending and
grinding the materials and a binder, and dispersing in an
organic solvent to prepare composite
slurry; uniformly
coating the surface of the pretreated
copper foil with the
slurry; and
drying and rolling to form a compact modification layer. The modified current collector can significantly reduce
lithium deposition
nucleation overpotential, induce uniform deposition of
lithium metal, effectively inhibit dendritic
crystal growth and improve interface stability. When the material is applied to a non-negative
lithium battery, the coulombic efficiency, the cycle life and the safety performance of the battery can be greatly improved, and the material has important industrial application value.