Ni-coated Si microchannel plate electrodes in three-dimensional lithium-ion battery anodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Fei Wang
  • Shaohui Xu
  • Shanshan Zhu
  • Hui Peng
  • Rong Huang
  • Lianwei Wang
  • Xiaohua Xie

Detail(s)

Original languageEnglish
Pages (from-to)250-255
Journal / PublicationElectrochimica Acta
Volume87
Online published13 Oct 2012
Publication statusPublished - 1 Jan 2013

Abstract

A three-dimensional (3D) anode comprising a Ni-coated Si microchannel plate (Si-MCP) as the matrix and active materials is prepared by photo-assisted electrochemical etching and electroless deposition. The morphology of the Ni-coated Si-MCP electrode is characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Using lithium foils as the counter electrodes, representative half-cells are fabricated and tested. Galvanostatic charge-discharge (C-D) measurements are conducted between 0.05 and 1.5 V and the Ni/Si-MCP anode exhibits a charge capacity of 3520 mAh g-1 with a coulombic efficiency close to 95.8% in the initial cycle and above 97% in the second cycle. When the C-D current is stepped up by 25 mAh g-1 every 10 cycles, the capacity always reaches the designed one of 1000 mAh g-1 until the current reaches 100 mA g-1. Based on electrochemical impedance spectroscopy (EIS) data, the mechanism is studied and described. © 2012 Elsevier Ltd.

Research Area(s)

  • Anode, Lithium-ion batteries, Silicon microchannel plate, Three-dimensional microbatteries

Citation Format(s)

Ni-coated Si microchannel plate electrodes in three-dimensional lithium-ion battery anodes. / Wang, Fei; Xu, Shaohui; Zhu, Shanshan; Peng, Hui; Huang, Rong; Wang, Lianwei; Xie, Xiaohua; Chu, Paul K.

In: Electrochimica Acta, Vol. 87, 01.01.2013, p. 250-255.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review