(哈尔滨理工大学 材料科学与工程学院，哈尔滨 150040)
摘 要: 锂离子二次电池在通讯、交通、电子、航空航天等领域的广泛应用促进了铜箔这一锂电池负极集流体主要材料的需求，铜箔性能的优劣将会影响电池的性能。综述了铜箔在锂离子二次电池中的作用及其生产工艺。探讨铜箔的抗拉强度、伸长率、表面粗糙度、厚度均匀性及表面质量等对电池性能的影响。阐述了电动汽车等所需高能量密度、高功率的新一代锂离子二次电池对铜箔性能的挑战，指出今后研制铜箔应向高强、高导、更薄的方向发展。
关键字: 铜箔；锂离子二次电池；负极材料；高能量密度
（School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China）
Abstract:Copper foil is the main material of the negative electrode current collector in lithium ion secondary batteries. The lithium ion secondary batteries are widely applied in communication, transportation, electronic and aerospace fields, this promotes a demand for copper foils. The properties copper foils will affect the properties of lithium ion secondary batteries. The role of copper foils in lithium ion secondary batteries and their fabrication technology were summarized. The effects of properties of copper foils, such as tensile strength, elongation, surface roughness, thickness uniformity and surface qualities, on the performance of batteries were discussed. The challenge from high energy density and power batteries for electric vehicles for copper foils was emphatically elaborated, and the development tendency of copper foils in the future was pointed out.
Key words: copper foil; lithium ion secondary batteries; negative electrode; high energy density
