Optimization of spin-coated electrodes for electrolyte-supported solid oxide fuel cells

AUTOR(ES)

Nobrega, Shayenne Diniz da, Monteiro, Natalia Kondo, Tabuti, Francisco, Florio, Daniel Zanetti de, Fonseca, Fabio Coral

FONTE

Matéria (Rio J.)

DATA DE PUBLICAÇÃO

22/05/2017

RESUMO

ABSTRACT Electrodes for electrolyte-supported solid oxide fuel cells (SOFC's) were fabricated by spin coating. Strontium-doped lanthanum manganite (LSM) cathode and nickel yttria-stabilized zirconia cermet anodes were synthesized and processed for enhanced deposition conditions. The influence of electrode microstructural parameters was investigated by a systematic experimental procedure aiming at optimized electrochemical performance of single cells. Polarization curves showed a strong dependence on both electrode thickness and sintering temperature. By a systematic control of such parameters, the performance of single cells was significantly enhanced due to decreasing of polarization resistance from 26 Ω cm² to 0.6 Ω cm² at 800°C. The results showed that spin-coated electrodes can be optimized for fast and cost effective fabrication of SOFCs.

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