氯离子与有机添加剂协同作用对铜箔组织性能的影响  

Effects of the synergistic interaction of Cl-and organic additives on the organization and properties of copper foil

作　　者：孙桢 黄剑 宋宁 樊小伟[1] 廖娟 王丽娟 唐云志[1] 谭育慧[1] 陆冰沪 李大双 SUN Zhen;HUANG Jian;SONG Ning;FAN Xiaowei;LIAO Juan;WANG Lijuan;TANG Yunzhi;TAN Yuhui;LU Binghu;LI Dashuang(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Anhui Tongguan Copper Foil Group Co.,Ltd.,Chizhou 247100,Anhui,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]安徽铜冠铜箔集团股份有限公司,安徽池州247100

出　　处：《有色金属科学与工程》2024年第2期220-227,共8页Nonferrous Metals Science and Engineering

基　　金：江西省自然科学基金重点基金资助项目(20202ACB202001);江西省重点研发计划项目(20212BBE51018、20224BBE51045);江西省教育厅项目(GJJ210831)。

摘　　要：随着锂离子电池产业的发展,负极集流体用铜箔正朝着高抗拉强度、高延伸率以及极薄尺寸的趋势发展。本实验通过探讨镀液中Cl^(-)、SPS和胶原蛋白添加剂协同作用对铜箔微观形貌及力学性能的影响规律,制备了抗拉强度为502 MPa、延伸率达5.1%的高性能铜箔。利用SEM、TEM、XRD、激光共聚焦显微镜表征了铜箔的表面形貌和织构,采用万能试验机、电化学工作站和接触角测试仪评估铜箔的力学强度、电化学性能及表面润湿性。结果表明,Cl^(-)和SPS的协同效应有利于铜箔晶粒细化,促使Cu(220)晶面取向增加,提高了铜箔的力学性能。Cl^(-)、SPS和胶原蛋白的组合添加协同作用进一步增强了铜箔(220)晶面取向,织构系数Tc达到52%,显著提高了铜箔抗拉强度、延伸率和表面润湿性能。With the development of the lithium-ion battery industry,copper foil for negative current collectors is moving toward higher tensile strength,higher elongation,and extremely thin dimensions.By exploring the synergistic interaction laws of Cl^(-),SPS,and collagen additives in the plating solution on the microscopic morphology and mechanical properties of copper foil,high-performance copper foils with a tensile strength of 502 MPa and elongation of 5.1%were prepared in this experiment.The surface morphology and texture of the copper foil were characterized by SEM,TEM,XRD and laser confocal microscopy.Its mechanical strength,electrochemical properties,and surface wettability of copper foil were evaluated by the universal testing machine,electrochemical workstation and contact angle tester.The results showed that the synergistic effect of Cl^(-)and SPS favored the grain refinement of copper foil,increased the Cu(220)crystal plane orientation,and improved the mechanical properties of copper foil.The synergistic effect of Cl^(-),SPS and collagen further improved the copper foil(220)crystal orientation and the texture coefficient reached Tc 52%,which significantly improved tensile strength,elongation and surface wetting properties.

关 键 词：添加剂 电沉积 晶粒细化 极化作用 

分 类 号：TG113.2[金属学及工艺—物理冶金]