Electrochemical performance of a nanostructured Pd₇₀Co₂₀Mo₁₀ MEA

 

Mauricio Garza–Castañón¹*, M.A. Jiménez¹, J.L. Acevedo–Dávila¹, F. Loyola, U. Cano², O.V. Kharissova³, S. Velumani⁴ and L. E. Garza Castañón⁴

 

¹ Corporación Mexicana de Investigación en Materiales S.A. de C.V. Ciencia y Tecnología # 790, Fracc. Saltillo 400, C.P. 25290, Saltillo Coahuila, México. *magarza@comimsa.com.

² Hydrogen and fuel cells group, Instituto de Investigaciones Eléctricas, Cuernavaca Morelos Reforma # 113 Col Palmira, C.P. 62490, Cuernavaca Morelos, México.

³ Facultad de Ciencias Físico–Matemáticas, UANL, Monterrey, México Pedro de Alba S/N, Ciudad Universitaria, C.P. 66450, San Nicolás de los Garza, N.L. México.

⁴ ITESM Campus Monterrey Ave. Eugenio Garza Sada #2501 Sur Col. Tecnológico, Monterrey Nuevo León, México, C.P. 64849

 

Recibido: 30 de noviembre de 2009.
Aceptado: 23 de abril de 2010.

 

Abstract

Results obtained by open circuit and potentiodynamic tests directly on a PEM fuel cell for a nanostructured Pd₇₀Co₂₀Mo₁₀ MEA are reported. A comparison of these results with the open circuit results obtained from a commercial Pt MEA is made, showing that although there's lower efficiency of the trimetallic catalyst, it is feasible to develop new Platinum–free MEA's. Background work involved ab–initio calculations using Materials Studio^TM software to estimate catalyst structure and reaction capability to dissociate H₂ molecule, as well as the synthesis of a trimetallic catalyst at the nanometric level. Chemical composition for the nanostructured anodic and cathodic trimetallic catalyst is determined by AES and compared to the AES pattern obtained for the bulk Pd₇₀Co₂₀Mo₁₀.

Keywords: PEM fuel cell; Trimetallic catalyst; MEA; Potentiodynamic test; Auger spectra.

 

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