锂电池用3D多孔铜箔研究进展  

Application of 3D-porous copper foil in lithium battery

作　　者：秦丽娟 王宇 魏甲明[1] 严大洲[1] QIN Lijuan;WANG Yu;WEI Jiaming;YAN Dazhou(China ENFI Engineering Corporation,Beijing 100038,China)

机构地区：[1]中国恩菲工程技术有限公司,北京海淀100038

出　　处：《中国有色冶金》2023年第2期73-80,共8页China Nonferrous Metallurgy

摘　　要：电解铜箔作为负极集流体是锂电池的重要组成部分,决定了锂电池的内阻,并影响电池的循环寿命以及稳定性。随着对锂电池能量密度和循环寿命要求的提高,对电解铜箔的相关性能如比表面积、微观形貌等要求也越来越高。3D多孔铜箔因其不同形式的多孔结构,较现有的平面铜箔具有更大的比表面积,可以有效提升锂离子电池的稳定性和循环寿命。推进3D多孔铜箔的商业化应用已经成为现阶段锂离子电池负极材料研究的主要方向之一。本文综述了不同形式的多孔铜集流体制备的工艺以及其相关性能测试,通过总结表明多孔铜负极集流体对提升锂离子电池性能具有重要意义。本文旨在为铜箔生产与研发人员提供参考。Copper foil is an important part of lithium battery as the negative current collector that is the main factors of the cycle life and stability of battery.It determines the internal resistance of lithium battery.With the improvement of the requirements for the energy density and cycle life of lithium battery,the requirements for the relevant properties of electrolytic copper foil,such as the roughness and micro morphology of surface,are also improved accordingly.Because of its porous structure and large specific surface area,3D porous copper foil can effectively improve the stability and cycle life of lithium-ion battery.Promoting the commercial application of 3D porous copper foil has become one of the main research directions of lithium-ion battery cathode materials at this stage.In this paper,several methods of preparation processes of porous copper foil and their relevant electrochemical performance are reviewed.Porous copper foil negative current collector has great significance to improve the performance of lithium-ion batteries.This paper provide the reference for engineers and researchers of copper foil.

关 键 词：多孔铜箔 负极集流体 锂离子电池 金属基负极材料 

分 类 号：TF803.27[冶金工程—有色金属冶金] TG146.11[一般工业技术—材料科学与工程]