High specific surface area MnO2 electrodeposited under supergravity field for supercapacitors and its electrochemical properties
High specific surface area MnO2 electrodeposited under supergravity field for supercapacitors and its electrochemical properties
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DOI：
10.1016/j.matlet.2012.06.059
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发表时间：
2012-10-01
影响因子：
3
通讯作者：
Ma, Zhipeng
中科院分区：
文献类型：
--
作者：
Du, Jianping;Shao, Guangjie;Ma, Zhipeng
以醋酸锰溶液为原料，采用超重力场电沉积法成功制备了MnO2电极材料。用X射线衍射仪对样品的结构进行了表征。结果表明，产物为γ-MnO2。通过恒电流充放电测试，研究了在不同超重力场下制备的MnO2电极材料的电化学性能。在转速为3000rpm时合成的MnO2具有最高的比表面积和放电容量，分别比正常重力场下的高68.6%和19.3%。研究发现，超重力场可以改善MnO2材料的电化学性能。(C)2012爱思唯尔B.V.保留所有权利。
MnO2 electrode material is successfully synthesized by electrodeposition under supergravity field from manganese acetate solution. The structure of the samples is characterized by X-ray diffraction. The results show that the product is gamma-MnO2. Galvanostatic charge/discharge measurements are applied to investigate electrochemical performances of the MnO2 electrodes material prepared under different supergravity fields. MnO2 synthesized under rotational speed 3000 rpm exhibits the highest specific surface area and discharge capacitance, the values of which are 68.6% and 19.3% higher than that under normal gravity fields, respectively. It is found that supergravity field can improve the electrochemical performance of MnO2 material. (C) 2012 Elsevier B.V. All rights reserved.