Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (12): 2314-2320.doi: 10.3866/PKU.WHXB20081228

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Preparation and Electrochemical Properties of Ordered Mesoporous C/NiO Composites

WANG Tao, HE Jian-Ping, ZHANG Chuan-Xiang, ZHOU Jian-Hua, GUO Yun-Xia, CHEN Xiu, DI Zhi-Yong, SUN Dun, WANG Dao-Jun   

  1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2008-08-12 Revised:2008-09-18 Published:2008-12-04
  • Contact: HE Jian-Ping

Abstract: Highly ordered mesoporous C/NiO composites were synthesized via the sol-gel process using an amphi-philic triblock copolymer F127 (Mw=12600, PEO106PPO70PEO106) as a template, Ni(OAc)2 as nickel source and resols as an organic precursor. X-ray diffraction (XRD), transmission electron microscopy (TEM), and nitrogen adsorption were used to characterize the structure. Cyclic voltammetry (CV)was used to test the electrochemical properties of the samples. The results showed that the backbone of the mesoporous structures consisted of NiO nanocrystallites and carbon. The C/NiO composites have a highly ordered mesostructure. The presence of NiO nanocrystallites was expected to improve the capacitance properties of the composite. At a C/NiOratio of 4:1 (molar ratio of phenol to nickel acetate) the composite had a large specific capacitance of 444.1 F·g-1 and the ordered mesostructure remained intact. Ordered mesoporous C/NiO composites thus are promising for applications.

Key words: Ordered, Mesoporous C/NiO, Sol-gel method, Specific capacitance


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