Silver-coated silicon microchannel plates for three-dimensional lithium-ion batteries anodes

Abstract

Abstract: 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^-1between 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.

Key words: silicon microchannel plate, lithium-ion batteries, three-dimensional microbatteries, anode

CLC Number:

O649.4

WANG Fei, XU Shao-hui, ZHU Shan-shan, LOU Xue-feng, HUI Ke-shuang,YANG Ping-xiong, WANG Lian-wei. Silver-coated silicon microchannel plates for three-dimensional lithium-ion batteries anodes[J]. Journal of East China Normal University(Natural Sc, 2013, 2013(5): 110-118, 129.

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