Research progress of electrolytic copper foil additives
With the rapid development of China's electronic information industry,the production process of electrolytic copper foil for electronic products has become increasingly demanding,as the performance of electrolytic copper foil affects the lifespan and capacity of lithium batteries.In the preparation process of electrolytic copper foil,the type and content of additives are the crucial factors determining its performance.The introduction of additives can change the deposition reaction potential of cathodic copper,affect the surface morphology and microstructure of the copper plating layer,and the rational use of multiple additives can improve the comprehensive performance of copper foil.Based on the classification of the action mechanism of additives and using characteristic functional groups as a starting point,this article reviews the roles of chloride ions,accelerators,leveling agents and suppres-sors in the copper deposition process,and summarizes the interaction mechanisms and effects among different additives.By understanding the action mechanism of additives and their interactions,it is possible to study the correlation between the additive mechanism and the performance of copper foil in theory,and explain the contradictions between the additive mechanism and the performance of copper foil.In production,the combination of additives can be optimized to effectively control the performance of electrolytic copper foil,improve production efficiency and save costs.
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