Conductive diamond as an advanced electrocatalyst support material

Jason A. Bennett, Jian Wang, Yoshiyuki Show, Greg M. Swain

Research output: Contribution to conferencePaper

Abstract

Boron-doped polycrystalline diamond is being investigated as an advanced electrocatalyst support material in comparison with commonly used sp2 carbon materials. This new support material exhibits excellent morphological and microstructural stability (>2 h) at high current density (0.1 A/cm 2) and temperature (>150°C); stability that is superior to conventional sp2-bohded carbon supports. Metal/diamond composite electrodes were formed Using both microcrystalline and nanocrystalline thin-films. The electrocatalytic (Pt) metal was deposited via a pulsed galvanostatic method, which produced metal particles of relative small nominal diameter and high number density, at least compared to previous work with constant potential and current deposition. The metal particles can be stabilized into the diamond surface by a secondary diamond growth of short duration. The catalytic activity of the supported Pt particles was probed using the oxygen reduction reaction.

Original languageEnglish (US)
Pages144-151
Number of pages8
StatePublished - 2004
Event206th ECS Meeting - Honolulu, HI, United States
Duration: Oct 3 2004Oct 8 2004

Other

Other206th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/3/0410/8/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Bennett, J. A., Wang, J., Show, Y., & Swain, G. M. (2004). Conductive diamond as an advanced electrocatalyst support material. 144-151. Paper presented at 206th ECS Meeting, Honolulu, HI, United States.