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Electrocatalytic behaviour for oxygen reduction reaction of small nanostructured crystalline bimetallic Pt–M supported catalysts

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Abstract

A 60 wt% Pt–Fe/C and a 60 wt% Pt–Cu/C catalysts with Fe and Cu content of 5 wt% were prepared by using a combination of colloidal and incipient wetness methods; this has allowed synthesis of small nanostructured crystalline bimetallic catalysts with particle size less than 3 nm and with a suitable degree of alloying. These materials were studied in terms of structure, morphology and composition using XRD, XRF and TEM techniques. The electrocatalytic behaviour for ORR of the catalysts was investigated using the rotating disk technique and compared to that of a pure Pt catalyst with similar particle size. No improvement in performance was recorded with the Pt–Cu compared to Pt catalyst, whereas, a promoting effect in enhancing the ORR was observed for the Pt–Fe catalyst both with and without methanol in the oxygen-saturated electrolyte solution.

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Acknowledgements

The authors gratefully acknowledge support from the MAE-SeCyT Cooperation program; A.M.C.L acknowledges support from CIC de la Provincia de Buenos Aires; CNR-ITAE authors acknowledge support from “Regione Piemonte” through the Micro Cell project (Delibera della Giunta Regionale no 25-14654 del 31/01/05).

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Correspondence to A.S. Arico.

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Stassi, A., D’urso, C., Baglio, V. et al. Electrocatalytic behaviour for oxygen reduction reaction of small nanostructured crystalline bimetallic Pt–M supported catalysts. J Appl Electrochem 36, 1143–1149 (2006). https://doi.org/10.1007/s10800-006-9197-9

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  • DOI: https://doi.org/10.1007/s10800-006-9197-9

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