铜业工程Issue(3)：25-32,8.DOI:10.3969/j.issn.1009-3842.2025.03.004
氯化镧改性γ-氨丙基三乙氧基硅烷提升铜箔抗蚀性
Modification of γ-Aminopropyltriethoxysilane by Lanthanum Chloride to Enhance Corrosion Resistance of Copper Foils
摘要
Abstract
With the rapid development of the electronics industry,copper foil has become indispensable in printed circuit boards and lithium-ion batteries owing to its superior electrical and mechanical properties.However,atmospheric exposure renders copper foil vulnerable to corrosion and oxidation,with compromised corrosion resistance significantly diminishing both service life and conductivi-ty.Silane coupling agents have emerged as promising alternatives to conventional passivation methods such as chromate,silicate,molybdate,and rare earth salt treatments,offering advantages in terms of reduced toxicity,lower cost,and enhanced environmental compatibility while maintaining excellent adhesion and chemical resistance,This study employed γ-aminopropyltriethoxysilane(γ-APS)for silane film preparation,incorporating lanthanum chloride as a modifying agent.Through systematic composition gradient design,lithium copper foil specimens were treated using both immersion and electrodeposition-assisted methods.Comprehensive electrochemic al characterization was performed through cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS),and Tafel polarization analysis to investigate the impact of rare earth element concentration on modification efficacy.The experimental results demonstrated that lanthanum incorporation significantly enhanced the corrosion resistance of silane-coated copper foil.Optimal protection was achieved at a lanthanum chloride concentration of 3 g/L,beyond which protective performance of rare earth content paradoxically decreased.This non-linear relationship between additive concentration and protective efficacy highlighted the importance of precise dosage control in surface modification processes.关键词
铜箔/γ-氨丙基三乙氧基硅烷/表面处理/抗腐蚀性/稀土改性硅烷膜/电沉积辅助法Key words
copper foil/γ-aminopropyltriethoxysilane/surface treatment/corrosion resistance/rare earth modified silane film/assisted electrodeposition分类
金属材料引用本文复制引用
杨春,师慧娟,宋宁,唐云志..氯化镧改性γ-氨丙基三乙氧基硅烷提升铜箔抗蚀性[J].铜业工程,2025,(3):25-32,8.基金项目
江西省重点研发计划项目(20224BBE51045,20223BBH80010,20244BBG73006) （20224BBE51045,20223BBH80010,20244BBG73006）
山东省重点研发计划项目(2024CXGC010105) （2024CXGC010105）
江西省重大科技项目(20244BDD40005) （20244BDD40005）
安徽省重点研发计划项目(202304a05020025)资助 （202304a05020025）
