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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (10): 1069-1074. 上一篇    下一篇

研究论文

低温热处理制备介孔NiO、Co3O4及超电容性能研究

郑明波 凌宗欣 廖书田 杨振江 姬广斌
曹洁明* 陶 杰

  

  1. (南京航空航天大学材料与科学技术学院 纳米材料研究所 南京 210016)

  • 投稿日期:2008-09-25 修回日期:2008-10-29 发布日期:2009-05-28
  • 通讯作者: 曹洁明

Synthesis of Mesoporous NiO and Co3O4 by Low-temperature Heat-treatment and Their Application to Supercapacitor

Zheng, Mingbo Ling, Zongxin Liao, Shutian Yang, Zhenjiang
Ji, Guangbin Cao, Jieming* Tao, Jie
  

  1. (Nanomaterials Research Institute, College of Materials Science and Technology, Nanjing University of Aeronautics and
    Astronautics, Nanjing 210016)
  • Received:2008-09-25 Revised:2008-10-29 Published:2009-05-28
  • Contact: Cao, Jieming

PDF

3143

被引次数

32

在不使用有机试剂的条件下, 通过简单的水热法制备了纳米结构的Ni(OH)2与Co(OH)2, 低温热处理得到NiO与Co3O4. 透射电子显微镜及N2等温吸附-脱附测试结果表明金属氧化物具有无序的介孔结构及高比表面积. 电化学测试结果表明介孔金属氧化物具有良好的超电容性能, 介孔NiO, Co3O4在5 mA放电电流下的比电容分别达176, 298 F•g－1.

关键词: 介孔金属氧化物, 纳米结构, 超级电容器

Ni(OH)2 and Co(OH)2 with a nanostructure were synthesized by an easy hydrothermal method without using any organic reagent. NiO and Co3O4 were obtained via heat-treatment of the hydrates at 250 ℃ and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption-desorption analysis. The characterization results indicate that the metal oxides have a disordered mesoporous structure and high BET surface area. The results of electrochemical tests show that the mesoporous metal oxides have fine supercapacitive behaviors and their specific capacitance values at the discharging current of 5 mA are 176 and 298 F•g－1, respectively.

Key words: mesoporous metal oxide, nanostructure, supercapacitor