High Capacity MoO2/Graphite Oxide Composite Anode for Lithium-Ion Batteries

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• 作者：Yun Xu ; Ran Yi ; Bin Yuan ; Xiaofei Wu ; Marco Dunwell ; Qianglu Lin ; Ling Fei ; Shuguang Deng ; Paul Andersen ; Donghai Wang ; Hongmei Luo
• 刊名：The Journal of Physical Chemistry Letters
• 出版年：2012
• 出版时间：February 2, 2012
• 年：2012
• 卷：3
• 期：3
• 页码：309-314
• 全文大小：359K
• 年卷期：v.3,no.3(February 2, 2012)
• ISSN：1948-7185

文摘

Nanostructured MoO₂/graphite oxide (GO) composites are synthesized by a simple solvothermal method. X-ray diffraction and transmission electron microscopy analyses show that with the addition of GO and the increase in GO content in the precursor solutions, MoO₃ rods change to MoO₂ nanorods and then further to MoO₂ nanoparticles, and the nanorods or nanoparticles are uniformly distributed on the surface of the GO sheets in the composites. The MoO₂/GO composite with 10 wt % GO exhibits a reversible capacity of 720 mAh/g at a current density of 100 mA/g and 560 mAh/g at a high current density of 800 mA/g after 30 cycles. The improved reversible capacity, rate capacity, and cycling performance of the composites are attributed to synergistic reaction between MoO₂ and GO.

Keywords:

lithium-ion battery; MoO₂; graphite oxide; composite; anode; solvothermal