In direct alcohol fuel cells (DAFCs), the oxidation of alcohols happens at the expenses of the oxygen reduction reaction 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[sbnd]N[sbnd]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 potential in its components, (ii) the analysis of the advantages from the use of the PGM-free cathode, and (iii) a review of the performance and durability of DAFCs. The review closes with a view of the authors of the future perspective for the research.
Berretti, E., Longhi, M., Atanassov, P., Sebastian, D., Lo Vecchio, C., Baglio, V., et al. (2021). Platinum group metal-free Fe-based (Fe[sbnd]N[sbnd]C) oxygen reduction electrocatalysts for direct alcohol fuel cells. CURRENT OPINION IN ELECTROCHEMISTRY, 29 [10.1016/j.coelec.2021.100756].
Platinum group metal-free Fe-based (Fe[sbnd]N[sbnd]C) oxygen reduction electrocatalysts for direct alcohol fuel cells
Santoro C.
Co-ultimo
;
2021
Abstract
In direct alcohol fuel cells (DAFCs), the oxidation of alcohols happens at the expenses of the oxygen reduction reaction 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[sbnd]N[sbnd]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 potential in its components, (ii) the analysis of the advantages from the use of the PGM-free cathode, and (iii) a review of the performance and durability of DAFCs. The review closes with a view of the authors of the future perspective for the research.
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