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研究论文

掺钌氢氧化钴复合材料在碱液中的电化学行为

  • 姚素梅 ,
  • 李国春 ,
  • 高学平
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  • 南开大学新能源材料化学研究所;

收稿日期: 2010-02-28

  修回日期: 2010-02-28

  网络出版日期: 2010-02-28

Electrochemical Behavior of Co-Ru Composite in Alkaline Solution

  • YAO Su-mei ,
  • LI Guo-chun ,
  • GAO Xue-ping
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  • (Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China

Received date: 2010-02-28

  Revised date: 2010-02-28

  Online published: 2010-02-28

摘要

应用化学共沉淀法制备掺钌氢氧化钴复合材料,X射线衍射(XRD)、扫描电子显微镜(SEM)显示非晶态RuO2颗粒分散在六方晶系Co(OH)2薄片的表面.循环伏安、恒流充放电测试表明,Co/Ru=8/1的复合材料在碱性电解液中具有优良的电容性能和较高的比容量.

本文引用格式

姚素梅 , 李国春 , 高学平 . 掺钌氢氧化钴复合材料在碱液中的电化学行为[J]. 电化学, 2010 , 16(1) : 56 -59 . DOI: 10.61558/2993-074X.2038

Abstract

The electrochemical properties of Ru doped cobalt hydroxides synthesized via homogeneous chemical co-precipitation were investigated in 6 mol·L-1 KOH solution by galvanostatic charge-discharge process and cyclic voltammetry(CV).It is demonstrated that Ru doped cobalt hydroxides exhibited good capacitive characteristic and high specific capacitance.The sample with a Co/Ru molar ratio of 8 /1 shows the optimized electrochemical performance,including capacitive property and discharge capacity.The microstructure and morphology of the obtained Ru doped hydroxides were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM).The amorphous structure of ruthenium dioxide nanoparticles and single-crystal structure of Co(OH)2 platelets were confirmed.Based on a structure analysis and electrochemical measurement,the reversible faradic reaction within electroactive materials is dominant for the capacitive characteristic and high capacity.
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