Sinteractivity, proton conductivity and chemical stability of BaZr 0.7In0.3O3-δ for solid oxide fuel cells (SOFCs)
Data(s) |
11/08/2011
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Resumo |
In3+ was used as dopant for BaZrO3 proton conductor and 30 at%-doped BaZrO3 samples (BaZr0.7In 0.3O3-δ, BZI) were prepared as electrolyte materials for proton-conducting solid oxide fuel cells (SOFCs). The BZI material showed a much improved sinteractivity compared with the conventional Y-doped BaZrO 3. The BZI pellets reached almost full density after sintering at 1600 °C for 10 h, whereas the Y-doped BaZrO3 samples still remained porous under the same sintering conditions. The conductivity measurements indicated that BZI pellets showed smaller bulk but improved grain boundary proton conductivity, when compared with Y-doped BaZrO3 samples. A total proton conductivity of 1.7 × 10-3 S cm -1 was obtained for the BZI sample at 700 °C in wet 10% H 2 atmosphere. The BZI electrolyte material also showed adequate chemical stability against CO2 and H2O, which is promising for application in fuel cells. |
Identificador | |
Publicador |
Elsevier BV |
Relação |
http://www.sciencedirect.com/science/article/pii/S0167273811003407 DOI:10.1016/j.ssi.2011.06.014 Bi, L., Fabbri, E., Sun, Ziqi, & Traversa, E. (2011) Sinteractivity, proton conductivity and chemical stability of BaZr 0.7In0.3O3-δ for solid oxide fuel cells (SOFCs). Solid State Ionics, 196(1), pp. 59-64. |
Direitos |
Copyright 2011 Elsevier |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #BaZrO3 #Ceramic membrane #Proton conductor #Sintering #Solid oxide fuel cell (SOFC) |
Tipo |
Journal Article |