Development of Fe-N-C electrocatalysts for oxygen reduction reaction for application in electrochemical systems
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2022
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BRAZIL MRS MEETING, 20th
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Resumo
The increase in energy demand and the decrease in the supply of fossil fuels has made fuel
cell technology evolve a lot in recent years. These devices have potential in various
applications such as portable power, stationary electricity generation, vehicular propulsion
and power plants. Despite the high efficiency and environmental benefits associated with
their use, fuel cells still lack optimizations to make them commercially viable. These
problems have been associated with the lack of catalysts that would allow these devices to
compete with existing technologies. Therefore, Fe-N-C non-precious metal electrocatalysts
work well for cathodic applications, especially in AEMFC given the favorable kinetics of the
oxygen reduction reaction (ORR) in alkaline medium [1, 2].
In this work, we explore the synthesis of Fe-N-C electrocatalysts from a polymeric precursor
formed by the oxidative polymerization of 1,5-diaminonaphthalene together with the
transition metal salt that undergoes pyrolysis to obtain a catalyst with high surface area and
conductivity.
The activity results obtained by RDE in alkaline medium showed that the half-wave potential
for the Fe-N-C electrocatalyst in ORR is only ≈60 mV more negative than the commercial
platinum catalyst. In addition, tests in AEMFC with Fe-N-C used in the cathode reached a
peak power density of 679 mW cm-2, revealing a good result for ORR and showing promise
for this application [3].
Como referenciar
COELHO, JESSICA F.; SANTIAGO, ELISABETE I.; LOPES, THIAGO. Development of Fe-N-C electrocatalysts for oxygen reduction reaction for application in electrochemical systems. In: BRAZIL MRS MEETING, 20th, September 25-29, 2022, Foz do Iguaçu, PR. Abstract... São Carlos, SP: Aptor Software, 2022. Disponível em: http://repositorio.ipen.br/handle/123456789/33560. Acesso em: 30 Dec 2025.
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