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High specific surface area MnO_2 electrodeposited under supergravity field for supercapacitors and its electrochemical properties

机译：超重力下电沉积超级电容器的高比表面积MnO_2及其电化学性能

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摘要

MnO_2 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 γ-MnO_2. Galvanostatic charge/discharge measurements are applied to investigate electrochemical performances of the MnO_2 electrodes material prepared under different supergravity fields. MnO_2 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 MnO_2 material.
机译：MnO_2电极材料是通过在超重力场下电沉积乙酸锰溶液成功合成的。样品的结构通过X射线衍射表征。结果表明，产物为γ-MnO_2。恒流充电/放电测量用于研究在不同超重力场下制备的MnO_2电极材料的电化学性能。以3000 rpm的转速合成的MnO_2具有最高的比表面积和放电电容，其值分别比正常重力场高68.6％和19.3％。发现超重力场可以改善MnO_2材料的电化学性能。

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  • 来源
    《Materials Letters》 |2012年第2012期|p.13-15|共3页
  • 作者

    Jianping Du; Guangjie Shao; Xiujuan Qin; Guiling Wang; Ying Zhang; Zhipeng Ma;

  • 作者单位

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao 066004, China,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao 066004, China,College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    manganese dioxide; supercapacitors; supergravity field; electrodeposition;

    机译：二氧化锰超级电容器超重力场电沉积;

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