The role of the ceria dopant on Ni / doped-ceria anodic layer cermets for direct ethanol solid oxide fuel cell
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2021
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International Journal of Hydrogen Energy
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The effect of ceria dopant aiming at stability in Ni/doped-ceria anodic layers for direct
ethanol solid oxide fuel cells (SOFC) was studied. Solid solutions of ceria doped with Y, Gd,
Zr, or Nb (10 mol%) impregnated with NiO were tested in a fixed bed reactor for ethanol
conversion reactions and for direct (dry) ethanol SOFC. The ceria dopant showed a marked
effect on both the catalytic and the electrical transport properties of the ceramic support. Catalytic activity data revealed that the studied materials deactivate in ethanol decomposition
reaction but are stable for ethanol steam reforming. Thus, feeding dry ethanol to
the SOFC with a Ni/doped-ceria anodic catalytic layer evidenced that water produced from
the electrochemical hydrogen oxidation provides steam for the internal reforming resulting
in great stability of the fuel cells tested during ~100 h. The combined catalysis and SOFC
results demonstrate Ni/doped-ceria is as candidate anode layer for stable SOFC running on
bioethanol.
Como referenciar
SILVA, A.A.A. da; STEIL, M.C.; TABUTI, F.N.; RABELO-NETO, R.C.; NORONHA, F.B.; MATTOS, L.V.; FONSECA, F.C. The role of the ceria dopant on Ni / doped-ceria anodic layer cermets for direct ethanol solid oxide fuel cell. International Journal of Hydrogen Energy, v. 46, n. 5, p. 4309-4328, 2021. DOI: 10.1016/j.ijhydene.2020.10.155. Disponível em: http://200.136.52.105/handle/123456789/31773. Acesso em: 26 Apr 2024.
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.