Direct ammonia fuel cell performance using PtIr/C as anode electrocatalysts
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International Journal of Hydrogen Energy
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Direct ammonia fuel cell (DAFC) performance was investigated using as anode PtIr/C
electrocatalysts (Pt:Ir atomic ratios of 50:50, 70:30, 80:20 and 90:10) prepared by the borohydride reduction process and NH4OH 1.0, 3.0 and 5.0 mol L 1 in KOH 1.0 mol L 1 as fuel. Xray analyses of PtIr/C electrocatalysts suggested the formation of PtIr alloy and the
transmission electron micrographs showed the average particle diameters between 4.5 and
6.0 nm. Using PtIr/C 50:50 electrocatalyst and NH4OH 5.0 mol L 1 in KOH 1.0 mol L 1 at 40 C
a maximum power density was 48% and 70% higher than that obtained using Pt/C and Ir/C
electrocatalysts, respectively. The increase of electroactivity using PtIr/C electrocatalysts
might be related to a decrease of poisoning on catalyst surface by Nads species and to an
improved kinetic for ammonia oxidation reaction.
Como referenciar
ASSUMPCAO, MONICA H.M.T.; SILVA, SIRLANE G. da; SOUZA, RODRIGO F.B. de; BUZZO, GUILHERME S.; SPINACE, ESTEVAM V.; OLIVEIRA NETO, ALMIR; SILVA, JULIO C.M. Direct ammonia fuel cell performance using PtIr/C as anode electrocatalysts. International Journal of Hydrogen Energy, v. 39, p. 5148-5152, 2014. DOI: 10.1016/j.ijhydene.2014.01.053. Disponível em: http://repositorio.ipen.br/handle/123456789/8543. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.