▎ 摘　　要

NOVELTY - Preparing composite current collector base film involves doping conductive particles containing conductive polymer and/or inorganic particles, and auxiliary agent in a polymer matrix as a carrier.The formed base film has conductivity. USE - Method is used for preparing composite current collector base film used in preparing composite current collector (claimed) of lithium battery. ADVANTAGE - The method enables to prepare a composite current collector in one step, by adding conductive particles to the polymer base material and mixing them to form a base film with enhanced conductivity, and enables to reduce the high equipment cost, during the processing of current collectors, and prevent the problem of low production efficiency. The prepared current collector has excellent ability to transport electrons, and when the battery is abnormally short-circuited, the conductive base film will be melted and fractured when heated, to avoid the burning phenomenon caused by continuous short-circuit, thus ensuring the battery safety. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1) composite current collector; and 2) preparation of composite current collector which involves performing electroplating, to form a metal film layer on the composite current collector base film, by using water electroplating process.