Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7712469 | International Journal of Hydrogen Energy | 2016 | 6 Pages |
Abstract
In this work, the NiOâ8YSZ/8YSZ half-cells for planar ASCs with the large size of 30 cm Ã 30 cm are prepared by optimizing both the sintering characteristics and the sintering temperature. The shrinkage rates, open porosities and flexural strength of the half-cells are investigated systematically. The large size half-cells which are prepared by the tape-casting, co-sintering and two-step sintering method show the optimal comprehensive performances with the sintering temperature being 1350 °C. The NiO+8YSZ/8YSZ/LSM+8YSZ anode-supported single cells are obtained at the sintering temperature of 1050 °C. The maximum measurement power at output voltage of 0.8 V of the two cells and 1.6 V of the stack can reach 32.6 W, 34.7 W and 67.3 W, respectively. The two-cells stack is successively discharged under constant current of 5 A for 316 h with the degradation rate of 1.58% khâ1 and 30 A for 1161 h with no degradation at the temperature of 750 °C. The large size ASCs show the good mechanical strength and an acceptable degradation.
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Authors
Yejian Xue, Wanbing Guan, Changrong He, Wu Liu, Jianxin Wang, Shanshan Sun, Zhenwei Wang, Weiguo Wang,