Enhanced sinterability and conductivity of BaZr0.3Ce0.5Y0.2O3?? by addition of bismuth oxide for proton conducting solid oxide fuel cells
By Gui, Liangqi; Ling, Yihan; Li, Geng; Wang, Zhihao; Wan, Yanhong; Wang, Ranran; He, Beibei; Zhao, Ling
Published in Journal of Power Sources
NULL
2016
Abstract
Abstract The effect of bismuth oxide addition on the sintering behavior and electrical properties of BaZr0.3Ce0.5Y0.2O3?? (BZCY) as an electrolyte for proton conducting solid oxide fuel cells (H-SOFCs) is studied. The introduction of Bi2O3 is beneficial to improving sinterability of BZCY, resulting in high density. Meanwhile, the conductivity test indicates that BaZr0.3Ce0.5Y0.2O3-? - 2 mol% Bi2O3 (BZCY-2) promises the highest conductivities. Further, single cells with BZCY-2 as the electrolyte are fabricated and evaluated. The cell with BZCY-2 presents excellent power densities, which reaches 0.67, 0.44, and 0.27 mW cm?2 at 700, 650, and 600
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