Anode properties and morphology evolution of three-dimensional lithium-ion battery electrodes comprising Ni-coated Si microchannel plates

► Decreasing the Li insertion/extraction level will improve the cyclic performances. ► The morphology of the Ni/Si-MCP after the galvanostatic cycles was examined. ► The mechanism of electrode fading was investigated and described. Using lithium foils as the counter electrodes and Ni-coated Si micro...

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Bibliographic Details
Published in:	Journal of alloys and compounds Vol. 563; pp. 186 - 191
Main Authors:	Wang, Fei, Zhu, Shanshan, Li, Mai, Lou, Xuefeng, Hui, Keshuang, Xu, Shaohui, Yang, Pingxiong, Wang, Lianwei, Chen, Yiwei, Chu, Paul K.
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier B.V 25-06-2013 Elsevier
Subjects:	Anode Anodes Applied sciences Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Electrochemical impedance spectroscopy Electrodes Exact sciences and technology Lithium-ion batteries Microchannel plates Morphology Nickel Scanning electron microscopy Silicon Silicon microchannel plate Three-dimensional microbatteries Lithium-ion batteries Three-dimensional microbatteries Anode Silicon microchannel plate Scanning electron microscopy Dispersive spectrometry Lithium battery Morphology Silicon Microchannel plates Microstructure Active material Electrochemical impedance spectroscopy
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Summary:	► Decreasing the Li insertion/extraction level will improve the cyclic performances. ► The morphology of the Ni/Si-MCP after the galvanostatic cycles was examined. ► The mechanism of electrode fading was investigated and described. Using lithium foils as the counter electrodes and Ni-coated Si microchannel plates (Si-MCPs) as the matrix and active materials, half-cells were fabricated and tested. Galvanostatic charge–discharge (C–D) measurements were conducted at 100mAg−1 between 0.05 and 1.5V. By decreasing the Li insertion/extraction level, the Ni/Si-MCP anode retained the reversible discharge capacity of 1000mAhg−1 for 80 cycles and 500mAhg−1 for 104 cycles, respectively. The morphology of the Ni/Si-MCP after the galvanostatic cycles was examined by scanning electron microscope (SEM). Based on the results of electrochemical impedance spectroscopy (EIS) and energy-dispersive X-ray spectroscopy (EDS), the mechanism of electrode fading was investigated and described.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2013.02.115