▎ 摘　　要

NOVELTY - Negative electrode current collector comprises a metal current collecting substrate, a conductive layer formed on surface of metal current collecting substrate and a metal layer formed on the conductive layer, where the conductive layer contains a conductive material, the metal layer includes metal powder layer, metal wire layer and/or a mixed layer and the metal layer has a grain boundary. USE - Negative electrode current collector for use in lithium-free battery (claimed), which is utilized for portable devices, such as portable computers, telephones and cameras. ADVANTAGE - The negative electrode current collector is eco-friendly and provides lithium-free battery with increased electrodeposition density and lifespan characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) an electrode assembly, which comprises the negative electrode current collector, a positive electrode having a structure in which a positive electrode mixture including an active material is applied on surface of the positive electrode current collector, and a separation membrane interposed between the negative electrode current collector and positive electrode; and (2) a lithium-free battery, which comprises a positive electrode, a negative electrode, a separator, and a lithium non-aqueous electrolyte, where the negative electrode comprises the negative electrode current collector and lithium layer formed on the negative electrode current collector, and the lithium layer is formed by charging a lithium-free battery.