MoO₃/reduced graphene oxide composites as anode material for sodium ion batteries

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• 作者：Xiaojie Zhang^a ; ¹ ; Conglong Fu^a ; ¹ ; Jinliang Li^a ; Chuang Yao^b ; Ting Lu^a ; ^{tlu@phy.ecnu.edu.cn} ; Likun Pan^a ; ^{lkpan@phy.ecnu.edu.cn}
• 关键词：MoO3/reduced graphene oxide composites ; Sodium ion batteries ; Anode materials
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：43
• 期：4
• 页码：3769-3773
• 全文大小：789 K
• 卷排序：43

文摘

MoO3/reduced graphene oxide (MoO3/RGO) composites were successfully prepared via a facile one-step hydrothermal method, and evaluated as anode materials for sodium ion batteries (SIBs). The crystal structures, morphologies and electrochemical properties of the as-prepared samples were characterized by X-ray diffraction, field-emission scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge tests, respectively. The results show that the introduction of RGO can enhance the electrochemical performances of MoO3/RGO composites. MoO3/RGO composite with 6 wt% RGO delivers the highest reversible capacity of ~208 mA h g−1 at 50 mA g−1 after 50 cycles with good cycling stability and excellent rate performance for SIBs. The excellent sodium storage performance of MoO3/RGO should be attributed to the synergistic effect between MoO3 and RGO, which offers the increased electrical conductivity, the facilitated electron transfer ability and the buffering of volume expansion.