d perovskite Membrane for Hydrogen Permeation and MT-SOFC">

Protonic Conducting Ceramic Hollow Fiber Based on BaCe0.95Tb0.05O3-d perovskite Membrane for Hydrogen Permeation and MT-SOFC

Thursday, 30 July 2015
Hall 2 (Scottish Exhibition and Conference Centre)
N. Yang, X. Meng (Shandong University of Technology), S. Liu (Curtin University, Australia), Z. F. Ma (Sinopoly Battery Research Center Limited), X. Tan (Tianjin Polytechnic University), and B. Meng (Shandong University of Technology)
BaCe0.95Tb0.05O3-d (BCTb) thin membranes with perovskite structure were prepared on porous Ni-BCTb hollow fiber by a combined phase inversion with dip-coating technique. After co-sintering at 1500°C, the dense BCTb with a thickness of 15μm is gas-tight, and the N2 permeance of the reduced dual-layer hollow fiber is 3×107 mol·m2·s1·Pa1 at 5 atm. Microtubular solid oxide fuel cell (MT-SOFC) with the configuration of Ag/BCTb/Ni-BCTb possesses high performance. The OCV is reduced with the operation temperature increase from 500 to 800°C,and the variation is significant at 700°C. Meanwhile, the maximum power density is up to 552 mW cm-2 at 700°C, higher than the value at other operation temperature increase. These imply that the serious electron leakage occurs above 700°C, and thus the Hydrogen permeation was carried out. The hydrogen permeation flux is as high as 0.61mLmin-1 cm-2at 850°C.