J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (12): 1089-1093.

• Nanomaterials and Nanotechnology •     Next Articles

Hydrogen Storage Alloy and Carbon Nanotubes Mixed Catalyst in a Direct Borohydride Fuel Cell

Sai Li1), Xiaodong Yang1), Haiyan Zhu2), Yan Liu1), Yongning Liu1)   

  1. 1) State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi0an 710049, China
    2) Department of Chemistry and Chemical Engineering, Weinan Normal University, Weinan 714000, China
  • Received:2011-04-26 Revised:2011-07-16 Online:2011-12-28 Published:2011-12-24
  • Contact: Y.N. Liu

Abstract: In this study, carbon nanotubes (CNTs) were mixed with AB5-type hydrogen storage alloy (HSA), as catalyst for an anode in a direct borohydride fuel cell (DBFC). As comparision, a series of traditional carbon materials, such as acetylene black, Vulcan XC-72R, and super activated carbon (SAC) were also employed. Electrochemical measurements showed that the electrocatalytic activity of HSA was improved greatly by CNTs. The current density of the DBFC employing the HSA/CNTs catalytic anode could reach 1550 mA·cm-2 (at −0.6 V vs the Hg/HgO electrode) and the maximum power density of 65 mW·cm-2 for this cell could be achieved at room temperature. Furthermore, the life time test lasting for 60 h showed that the cell displayed a good stability.

Key words: Direct borohydride fuel cell, Carbon nanotubes, Hydrogen storage alloy, Electrocatalytic activity