P-doped SnFe nanocubes decorated with PdFe alloy nanoparticles for ethanol fuel cells

Conventional Pt-based anode catalysts in polymer electrolyte membrane fuel cells are subject to high cost, fuel inflexibility, low power and current density, and inferior stability, which hinders their application in both mobile and stationary power sources. Considering these factors, a new and nove...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-05, Vol.9 (17), p.1685-1694
Main Authors: Konwar, Dimpul, Basumatary, Padmini, Lee, UnHo, Yoon, Young Soo
Format: Article
Language:English
Subjects:
Anodes
Catalysts
Durability
Electrolytic cells
Ethanol
Fuel cells
Fuel technology
Graphene
Hydrogen fuels
Maximum power
Nanoalloys
Nanoparticles
Polymers
Power sources
Proton exchange membrane fuel cells
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Summary:Conventional Pt-based anode catalysts in polymer electrolyte membrane fuel cells are subject to high cost, fuel inflexibility, low power and current density, and inferior stability, which hinders their application in both mobile and stationary power sources. Considering these factors, a new and novel catalyst was developed and applied to advanced fuel-flexible cells. First, P-doped SnFe nanocubes were prepared on reduced graphene oxide, then the PdFe alloy was decorated on the surface of the former and termed PdFe/SnFeP@rGO. This catalyst had a very low Pd content and achieved a remarkable mass activity enhancement of 7135.79 mA mg Pd −1 , ∼17 times higher than that of commercial Pd/C. Moreover, PdFe/SnFeP@rGO exhibited enhanced durability with no significant degradation after 1000 cycles, demonstrating its potential for application in fuel cells. A single cell with PdFe/SnFeP@rGO anode catalysts delivered maximum power densities of 60.24 and 857.54 mW cm −2 in ethanol and hydrogen fuel, respectively, at 60 °C. In this study, a three-dimensional SnFeP nanocube was prepared, and then PdFe alloy was decorated over it. A single cell with PdFe/SnFeP@rGO anode catalysts exhibited promising power densities in ethanol and hydrogen fuels at low temperature.
ISSN:2050-7488
2050-7496
DOI:10.1039/d0ta12120g