Synthesis of mesoporous tungsten carbide-supported platinum and its electrocatalytic activity for methanol oxidation

Z.Y. Chen, Wenfeng Lin, C Ma

Research output: Contribution to journalArticle

Abstract

High activity and stability during oxidation of methanol under the relatively anode environment are two main evaluation criterias for an effective anode electrocatalyst in direct methanol fuel cell (DMFC). Mesoporous WC samples with hollow structure were prepared by gas-solid reaction at the atmosphere of CH(4)/H(2) by using airflow spray dried ammonium metatungstate (AMT). The platinum supported on this material by impregnation-vapor phase deoxidation method served as a less expensive electro anode catalyst. XRD and SEM results showed that Pt particles were well dispersed on the surface of WC. The results showed that the Pt/WC-PME exhibited an attractive catalytic activity, and methanol oxidation process in Pt/WC-PME is affected by liquid-phase mass transfer. The results also indicated that the oxidation can be improved by raising temperatures.
Original languageEnglish
Article number WOS:000289812500068
Pages (from-to)350-354
Number of pages5
JournalTHE SECOND CHINA ENERGY SCIENTIST FORUM
Volume1-3
Publication statusPublished - Oct 2010

Keywords

  • tungsten carbide; mesoporous; platinum; methanol oxidation

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