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中文摘要：
采用光辅助电化学刻蚀和无电镀银方法,制备出一种可用于三维锂离子电池的覆银硅微通道板（Ag/Si-MCP）负极结构.利用XRD和扫描电镜（SEM）对材料特性进行表征;并在氩气氛保护下以锂片为对电极封装为CR2025半电池,采用恒流充放电测试、循环伏安法（CV）及交流阻抗法（EIS）,对银覆盖层对电极性能的影响进行了细致的分析.在0.02 V～1.5 V电位（vs.Li＋/Li）范围内以10 mA·g~（-1）电流密度进行恒流充放电测试.样品在首次充电（硅的锂合金化）过程中获得高达3 484.7 mAh·g~（-1）的比容量值,且在首次充放电循环中库仑效率达到95.97%.并在随后的循环中,表现出优于未经覆银处理的硅微通道电极的性能.
英文摘要：
In this work,a three-dimensional（3-D） anode using a silver-coated Si microchannel plate（Si-MCP） as the active materials was prepared by photo-assisted electrochemical etching followed by electroless deposition.Using lithium foils as the counter electrodes,representative half-cells are fabricated and tested.In galvanostatic charge-discharge（C-D） measurements at 10 mA·g~（-1） between 0.02 and 1.5 V,our anode exhibits a charge capacity of 3484.7 mAh·g~（-1） with a coulombic efficiency close to 95.97%in the initial cycle.Based on the cyclicvoltammetry （CV） and the electrochemical impedance spectroscopy（EIS） data,the mechanism about the lithiation of Ag-coated Si-MCP was also studied.
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