RGO/Stibnite Nanocomposite as a Dual Anode for Lithium and Sodium Ion Batteries

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• 作者：A. Shahul Hameed ; M. V. Reddy ; Jeremiah L. T. Chen ; B. V. R. Chowdari ; Jagadese J. Vittal
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：May 2, 2016
• 年：2016
• 卷：4
• 期：5
• 页码：2479-2486
• 全文大小：530K
• 年卷期：0
• ISSN：2168-0485

文摘

RGO/Sbb>2b>Sb>3b> nanocomposite has been investigated in this study as a dual anode material for Li- and Na-ion battery applications. The stibnite phase of Sbb>2b>Sb>3b>, and its rGO composite have been obtained from a molecular complex, Sb(SCOPh)b>3b> or its rGO mixture by solid state decomposition or hydrothermal treatment. The pristine sample consists of micron sized particles with rod-like morphology while the rGO composite is made of nanoparticles of Sbb>2b>Sb>3b> embedded in rGO sheets. Electrochemical lithium and sodium storage properties of the prepared materials have been investigated using galvanostatic cycling, cyclic voltammetry, and electrochemical impedance spectroscopy studies. The rGO composite demonstrates better lithium storage capacity than the pristine sample owing to enhanced conductivity. In addition, the rGO sheets act as a buffer for volume change during lithium/sodium cycling resulting in a better energy storage.