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研究论文

超级电容器用纳米二氧化锰的合成及其电化学性能

  • 马军 ,
  • 郑明森 ,
  • 董全峰
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  • 厦门大学化学化工学院化学系,厦门大学化学化工学院化学系,厦门大学化学化工学院化学系 福建厦门361005,福建厦门361005,福建厦门361005

收稿日期: 2007-08-28

  修回日期: 2007-08-28

  网络出版日期: 2007-08-28

The Syntheses and Electrochemical Performance of Nano-MnO_2 for Supercapacitor

  • MA Jun ,
  • ZHENG Ming-sen ,
  • DONG Quan-feng
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  • (Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China

Received date: 2007-08-28

  Revised date: 2007-08-28

  Online published: 2007-08-28

摘要

应用低温固相法和化学沉淀法制备4种用于电化学电容器的纳米级二氧化锰.由XRD、SEM和循环伏安等表征和测试其物化性能及电容特性.结果表明,该二氧化锰材料的颗粒尺寸约几十nm,在0.1 A.g-1电流密度下放电时产物的比电容最高,可达149F.g-1,二氧化锰的大倍率放电性能与其结构特征直接相关,材料的晶体结构越完整其大倍率放电性能越好.

本文引用格式

马军 , 郑明森 , 董全峰 . 超级电容器用纳米二氧化锰的合成及其电化学性能[J]. 电化学, 2007 , 13(3) : 233 -237 . DOI: 10.61558/2993-074X.1813

Abstract

Nano-manganese dioxide were prepared by two different methods which are low temperature solid reaction and chemical deposition.The products were characterized by XRD,SEM,BET and constant current charge-discharge tests.The result shows that there is a close relationship between specific capacitance and BET surface areas.Meanwhile the specific capacitance was impacted little by the structure of the nano-manganese dioxides.However,the product performance of high rates,was influenced by structure,the higher rate can be obtained with the more perfect crystal structure.

参考文献

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