Enhancing the Methanol Oxidation Catalyst Activity and Durability via Affecting the Catalyst-Support Interaction

Huyen N. Dinh, Svitlana Pylypenko, Arrelaine Dameron, K. C. Neyerlin, Timothy Olson, Steven Christensen, Kevin O'Neil, Katherine E. Hurst, Justin Bult, April Corpuz, S. R. Narayan, Karthik Ashwin, Bo Yang, Charles C. Hays, M. A. Johnson, Ryan O'Hayre, Bryan Pivovar, Thomas Gennett

Research output: Contribution to conferencePaperpeer-review

Abstract

Next generation direct methanol fuel cell (DMFC) anode catalyst materials are needed to accelerate the commercialization of DMFCs for consumer electronics applications. Bimetallic PtRu is the state of the art catalyst for methanol oxidation reaction (MOR) because it assists in the bifunctional mechanism of the MOR. The focus of our work is to improve the catalytic activity and durability of the anode for the MOR since it is the MOR that is the limiting half-reaction. Our approach investigates beneficial catalyst-support interactions that can substantially improve the activity, selectivity, and durability of catalytic systems through intrinsic (synthetic) and extrinsic (ion-implantation) substitutional doping of the carbon substrate prior to and after catalyst deposition. Previous work has shown that surface modification and doping of the Pt catalyst support enhance the catalytic activity and durability of methanol oxidation. For these studies we have incorporated a number of ion-implanted dopants (N, Ar) into carbon, both highly oriented pyrolytic graphite (HOPG) and various carbon powders. The improved performance and durability observed for PtRu on a series of model HOPG and high surface area carbon systems will be presented.

Original languageAmerican English
Pages111-112
Number of pages2
StatePublished - 2011
Event241st ACS National Meeting and Exposition - Anaheim, CA, United States
Duration: 27 Mar 201131 Mar 2011

Conference

Conference241st ACS National Meeting and Exposition
Country/TerritoryUnited States
CityAnaheim, CA
Period27/03/1131/03/11

NREL Publication Number

  • NREL/CP-5600-54236

Keywords

  • commercial
  • fuel cells
  • fuel storage
  • methanol oxidation reaction
  • military

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