Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (05): 839-843.doi: 10.1016/S1872-1508(08)60037-6

• ARTICLE • Previous Articles     Next Articles

Influence of Hierarchical Porosity in Carbon Material on Electrocatalytic Property of Supported Pt Nanoparticles

ZHOU Jian-Hua; HE Jian-Ping; JI Ya-Jun; ZHAO Gui-Wang; ZHANG Chuan-Xiang; CHEN Xiu; WANG Tao   

  1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2007-12-03 Revised:2008-01-31 Published:2008-05-05
  • Contact: HE Jian-Ping E-mail:jianph@nuaa.edu.cn

Abstract: The influence of hierarchical porosity on electrocatalytic property was investigated with Pt nanoparticles supported on three types of carbon materials, namely, commercial Vulcan XC-72, ordered mesoporous carbon CMK-5, and hierarchical carbon aerogel (HCA). The electrocatalytic activity of carbon supported Pt nanoparticles was verified by cyclic voltammetry in H2SO4 and CH3OH solution. Pt/HCA presented superior performance with higher peak current (7.5 mA·cm-2) and electrochemical active area (128.0 m2·g-1). This could be attributed to the carbon aerogel with continuous but nonperiodical mesopore structure, which facilitated dispersion of Pt nanoparticles and mass transport around reactants and products.

Key words: Carbon aerogel, Hierarchical porosity, Pt nanoparticles, Mesopore, Electrocatalytic property

MSC2000: 

  • O646