▎ 摘　　要

NOVELTY - A positive electrode current collector comprises support layer having two opposite surfaces in the thickness direction, and conductive layer arranged on at least one surface of the support layer. The conductive layer has thickness (D1) of 300 nm to 2 mu m, preferably 500 nm to 1.5 mu m. When tensile strain of positive electrode current collector is 3% or more, the sheet resistance growth rate of conductive layer is 80-300%. USE - Positive electrode current collector used in positive electrode for electrochemical device for electric vehicle and electronic product (all claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) positive electrode, which comprises the positive electrode current collector and electrode active material layer provided on the positive electrode current collector; and (2) electrochemical device, which comprises the positive electrode, negative electrode, separator and electrolyte.