Synthesis and electrochemical performance of Bi2WO6/graphene composite as anode material for lithium-ion batteries
Synthesis and electrochemical performance of Bi2WO6/graphene composite as anode material for lithium-ion batteries
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DOI：
10.1016/j.matlet.2014.11.041
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发表时间：
2015-02
影响因子：
3
通讯作者：
Linsen Zhang;Qingling Bai;Kai Jin;Li-zhen Wang;Yong Zhang;Song Yanhua
中科院分区：
文献类型：
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作者：
Linsen Zhang;Qingling Bai;Kai Jin;Li-zhen Wang;Yong Zhang;Song Yanhua
采用溶胶-凝胶法和烧结法合成了Bi2WO6/石墨烯复合材料作为锂离子电池负极材料。用扫描电子显微镜、透射电子显微镜和X射线衍射仪对产物的形貌和结构进行了分析。采用恒电流充放电法、循环伏安法和交流阻抗法研究了Bi2WO6/石墨烯复合材料的电化学性能。结果表明，Bi2WO6/石墨烯复合材料的首次可逆比容量在50 mA/−时达到697.1 mA/h−1。充放电循环研究表明，Bi2WO6/石墨烯复合材料具有优良的循环稳定性和优异的倍率性能。
A Bi2WO6/graphene composite synthesized by sol–gel and sintering processes was investigated as anode material for Li-ion batteries. The morphology and structure of the products were analyzed by SEM, TEM, and XRD. The electrochemical performance of Bi2WO6/graphene composite was investigated by the galvanostatic charge/discharge method, cyclic voltammetry and electrochemical impedance spectroscopy. Results showed that the first cycle of the reversible specific capacity of Bi2WO6/graphene composite reached 697.1 mA h g−1at 50 mA g−1. Charge/discharge cycling study indicated that the Bi2WO6/graphene composite had excellent cycling stability and superior rate capability.