Properties of bias-assisted sputtered gadolinia-doped ceria interlayers for solid oxide fuel cells
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The growth and electrochemical properties of gadolinia-doped ceria(GDC)interlayers deposited by biasassisted magnetron sputtering in solid oxide fuel cells have been investigated. Such interlayers act as diffusion barriers to protect the yttria-stabilized zirconia electrolyte, preventing possible degradation when mixed ionic–electronic conductor (La,Sr)(Co,Fe)O3−ı is used as the cathode. The dependence of the applied bias during the sputtering deposition on both the interlayer microstructure and fuel cell performance has been studied in anode-supported single cells. The main experimental results showed that bias-assisted sputtering of GDC interlayers produced microstructures denser than those of unbiased depositions, which resulted in increased electrochemical properties of fuel cells.
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FONSECA, F.C.; UHLENBRUCK, S.; NEDÉLÉC, R.; BUCHKREMER, H.P. Properties of bias-assisted sputtered gadolinia-doped ceria interlayers for solid oxide fuel cells. Journal of Power Sources, v. 195, n. 6, p. 1599-1604, 2010. DOI: 10.1016/j.jpowsour.2009.09.050. Disponível em: http://repositorio.ipen.br/handle/123456789/8213. Acesso em: 30 Dec 2025.
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