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电化学(中英文) ›› 2007, Vol. 13 ›› Issue (3): 249-252. 

• 研究论文 • 上一篇    下一篇

掺铝Co_3O_4的制备及其电容性能研究

葛鑫;陈野;张春霞;舒畅;   

  1. 哈尔滨工程大学材料科学与化学工程学院,哈尔滨工程大学材料科学与化学工程学院,哈尔滨工程大学材料科学与化学工程学院,哈尔滨工程大学材料科学与化学工程学院 黑龙江哈尔滨150001,黑龙江哈尔滨150001,黑龙江哈尔滨150001,黑龙江哈尔滨150001
  • 收稿日期:2007-08-28 修回日期:2007-08-28 出版日期:2007-08-28 发布日期:2007-08-28

Prerapation and Supercapacitor Property of Al Doped Co_3O_4

GE Xin,CHEN Ye*,ZHANG Chun-xia,SHU Chang   

  1. (College of Material science and Chemical Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China
  • Received:2007-08-28 Revised:2007-08-28 Published:2007-08-28 Online:2007-08-28

摘要: 以KOH作沉淀剂制备掺杂Al(Ⅲ)的Co3O4粉体.X射线衍射显示,掺Al的Co3O4不改变其晶型结构.循环伏安、恒流充放电等测试表明,化学掺Al后的Co3O4电极,其比容量提高,当Co(Ⅱ)与Al(Ⅲ)的摩尔比为1∶0.05时,在0~400 mV的电位区间内,5 mA/cm2电流密度下,单电极放电比容量可达518.07 F/g.

关键词: 电容器, Co3O4, 掺杂, Al

Abstract: With KOH as precipitator to prepare Aluminum doped Co3O4,X-ray diffraction indicated that the doping Al did not change the crystal structure of Co3O4.Electrochemical properties of the sample were tested by cyclic voltammetry and constant-current charge/discharge.The results showed that the chemical doping improved the specific capacitance.When the mol ratio of Co(Ⅱ) with Al(Ⅲ)was 1∶0.05,the specific capacitance was up to 518.07 F/g within 0~400 mV potenitial at current density 5 mA/cm2.

Key words: supercapacitor, Co3O4, doping, aluminum

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