Work

Investigation of Enhanced CO Tolerance in Proton Exchange Membrane Fuel Cells by Carbon Supported PtMo Alloy Catalyst

Year: 1999

Type: article

Abstract: We report a two‐ to threefold enhancement of tolerance in a proton exchange membrane (PEM) fuel cell, exhibited by carbon supported nanocrystalline as compared to the current state of the art electrocatalysts. The bulk of these nanocrystals were comprised of alloyed with in the ratio 8.7:1.3 as shown by both X‐ray diffraction and in situ extended X‐ray absorption fine structure measurements. Rotating disk electrode measurements and cyclic voltammetry in a PEM fuel cell indicate the onset of oxidation at potentials as low as . Further, the oxidation of exhibits two distinct peaks, indicating redox behavior involving oxyhydroxides of . This is supported by in situ X‐ray absorption near edge structure measurements at the edge. ©1999 The Electrochemical Society

Source: Electrochemical and Solid-State Letters

DOI: 10.1149/1.1390718

Author: S. Mukerjee

Institution: Brookhaven National Laboratory

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: U.S. Department of Energy, Fundação de Amparo à Pesquisa do Estado de São Paulo, Brookhaven National Laboratory