摘要: 为改善金属集流体在高性能电化学体系里的界面稳定性及导电水平，构建由多维纳米导电剂组成的复合涂层，对形貌、结构、电学及电化学的测试展开系统研究。结果显示：复合网络大幅度降低界面电阻与界面电荷转移阻抗，提高高倍率性能和循环稳定性，机理分析说明，多维导电通路跟致密界面结构协同起到电化学强化作用。本研究为集流体涂层的功能化设计提供了有效路径。
关键词: 纳米导电剂 / 复合涂层 / 集流体 / 电化学性能 / 界面机理

Abstract:

To improve the interfacial stability and conductivity of metal current collectors in high-performance electrochemical systems, a composite coating composed of multidimensional nano-conductive agents is developed, and systematic research into its morphology, structure, electrical and electrochemical properties is conducted. The results demonstrate that the composite coating significantly reduces interfacial resistance and interface charge transfer impedance, whilst enhancing high-rate performance and cycling stability. Mechanistic analysis indicates that multidimensional conductive pathways synergise with a dense interfacial structure to exert an electrochemical strengthening effect. This study provides an effective approach for the functional design of current collector coatings.

Keywords: nano-conductive agents / composite coating / current collector / electrochemical performance / interfacial mechanism