In Direct Alcohols Fuel Cells (DAFCs), the oxidation of alcohols happens at the expenses of the Oxygen Reduction Reaction (ORR) at the cathode. DAFCs cathodes use a significant amount of platinum that is an expensive critical raw material. Moreover, platinum oxidizes alcohols a fact that combined with alcohol crossover decreases significantly the performance of the cells. The use of Fe-based (Fe-N-C) platinum group metal-free (PGM-free) cathodes is a convenient strategy to overcome these limitations. This review analyzes the application of PGM-free cathodes to DAFCs. The discussion focuses on acidic systems and covers the following subjects: i) the breakdown of DAFC cell potential in its components; ii) the analysis of the advantages from the use of PGM-free cathode; ii) a review of the performance and durability of DAFCs. The review closes with a view of the author of the future perspective for the research.

Platinum Group Metal-free (PGM-free) Fe-based (Fe-N-C) Oxygen Reduction Electrocatalysts for Direct Alcohol Fuel Cells / E. Berretti, M. Longhi, P. Atanassov, D. Sebastián, C. Lo Vecchio, V. Baglio, A. Serov, A. Marchionni, F. Vizza, C. Santoro, A. Lavacchi. - In: CURRENT OPINION IN ELECTROCHEMISTRY. - ISSN 2451-9103. - (2021). [Epub ahead of print]

Platinum Group Metal-free (PGM-free) Fe-based (Fe-N-C) Oxygen Reduction Electrocatalysts for Direct Alcohol Fuel Cells

M. Longhi;
2021

Abstract

In Direct Alcohols Fuel Cells (DAFCs), the oxidation of alcohols happens at the expenses of the Oxygen Reduction Reaction (ORR) at the cathode. DAFCs cathodes use a significant amount of platinum that is an expensive critical raw material. Moreover, platinum oxidizes alcohols a fact that combined with alcohol crossover decreases significantly the performance of the cells. The use of Fe-based (Fe-N-C) platinum group metal-free (PGM-free) cathodes is a convenient strategy to overcome these limitations. This review analyzes the application of PGM-free cathodes to DAFCs. The discussion focuses on acidic systems and covers the following subjects: i) the breakdown of DAFC cell potential in its components; ii) the analysis of the advantages from the use of PGM-free cathode; ii) a review of the performance and durability of DAFCs. The review closes with a view of the author of the future perspective for the research.
Direct alcohol fuel cell; platinum group metal-free catalysts; cathode; alcohol tolerance
Settore CHIM/02 - Chimica Fisica
7-mag-2021
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/843164
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