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Nanomaterials 2016, 6(11), 218; doi:10.3390/nano6110218

A Facile Method to In-Situ Synthesize Porous Ni2GeO4 Nano-Sheets on Nickel Foam as Advanced Anode Electrodes for Li-Ion Batteries

1,2
,
1
and
1,2,*
1
Institute of Laser Engineering, Beijing University of Technology, No. 100 Pingle Yuan, Chaoyao District, Beijing 100124, China
2
Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee Knoxville, 1512 Middle Drive, Knoxville, TN 37996, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 14 September 2016 / Revised: 25 October 2016 / Accepted: 28 October 2016 / Published: 19 November 2016
View Full-Text   |   Download PDF [4389 KB, uploaded 19 November 2016]   |  

Abstract

A strategy for growth of porous Ni2GeO4 nanosheets on conductive nickel (Ni) foam with robust adhesion as a high-performance electrode for Li-ion batteries is proposed and realized, through a facile two-step method. It involves the low temperature hydro-thermal synthesis of bimetallic (Ni, Ge) hydroxide nanosheets precursor on Ni foam substrates and subsequent thermal transformation to porous Ni2GeO4 nanosheets. The as-prepared Ni2GeO4 nanosheets possess many interparticle mesopores with a size range from 5 to 15 nm. The hierarchical structure of porous Ni2GeO4 nanosheets supported by Ni foam promises fast electron and ion transport, large electroactive surface area, and excellent structural stability. The efficacy of the specially designed structure is demonstrated by the superior electrochemical performance of the generated Ni2GeO4 nanosheets including a high capacity of 1.8 mA·h·cm−2 at a current density of 50 μA·cm−2, good cycle stability, and high power capability at room temperature. Because of simple conditions, this fabrication strategy may be easily extended to other mixed metal oxides (MxGeOy). View Full-Text
Keywords: Ni2GeO4; porous nanosheets; Ni foam; Li-ion batteries; Self-standing Ni2GeO4; porous nanosheets; Ni foam; Li-ion batteries; Self-standing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, D.; Shi, X.; Hu, A. A Facile Method to In-Situ Synthesize Porous Ni2GeO4 Nano-Sheets on Nickel Foam as Advanced Anode Electrodes for Li-Ion Batteries. Nanomaterials 2016, 6, 218.

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