Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (07): 1685-1688.doi: 10.3866/PKU.WHXB20110726

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Catalytic Performance of Pt Nanowire Arrays for Oxygen Reduction

ZHANG Min1,2, LI Jing-Jian2, PAN Mu1, XU Dong-Sheng2   

  1. 1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China;
    2. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2011-04-15 Revised:2011-05-20 Published:2011-06-28
  • Contact: PAN Mu, XU Dong-Sheng E-mail:panmu@whut.edu.cn; dsxu@pku.edu.cn
  • Supported by:

    The project was supported by the Self-determined and Innovative Research Funds of SKLWUT, China, National Natural Science Foundation of China (21073007, 50821061), and National Key Basic Research Program of China (973) (2007CB936201).

Abstract:

Platinum nanowire arrays (Pt NWs) catalyst was fabricated by electrodepositing with anodic aluminum oxide (AAO) as a template. The morphology and oxygen reduction reaction (ORR) electrocatalytic properties of the as-prepared platinum nanowire array catalysts were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical measurements. The cyclic voltammetry (CV) showed that the specific electrochemical surface area (ECSA) of the Pt NWs was much higher than the geometric area. The half wave potential in the oxygen reduction reaction curves of the Pt NWs was more positive than that of Pt/C from the rotating disk electrode (RDE) measurements. Moreover, Pt NWs catalysts give higher limiting diffusion current by comparison with that of conventional Pt/C catalyst.

Key words: AAO template, Platinum nanowire array, Oxygen reduction reaction, Proton exchange membrane fuel cell

MSC2000: 

  • O646