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High-performance low-temperature solid oxide fuel cell with novel BSCF cathode
被引:202
作者:
Liu, Q. L.
Khor, Khiam Aik
[1
]
Chan, S. H.
[1
]
机构:
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Fuel Cell Strateg Res Programme, Singapore 639798, Singapore
关键词:
solid oxide fuel cell;
low-temperature;
anode-supported;
novel BSCF cathode;
gadolina-doped ceria electrolyte;
power density;
D O I:
10.1016/j.jpowsour.2006.03.095
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
An anode-supported solid oxide fuel cell (SOFC), consisting of a dense 10 mu m Gd0.1Ce0.9O1.95 (GDC) electrolyte, a porous Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) cathode and a porous Ni-GDC cermet anode, is successfully assembled and electrochemically characterized. With humidified (3% water vapour) hydrogen as the fuel and air as the oxidant, the cell exhibits open-circuit voltages of 0.903 and 0.984 V when operating at 600 and 500 degrees C, respectively. The cell produces peak power densities of 1329, 863, 454, 208 and 83 mW cm(-2) at 600, 550, 500, 450 and 400 degrees C, respectively. These results are impressive and demonstrate the potential of BSCF for use as the cathode material in new-generation SOFCs with GDC as the electrolyte. In addition, the sustained performance at temperatures below 600 degrees C warrants commercial exploitation of this SOFC in stationary and mobile applications. (c) 2006 Elsevier B.V. All rights reserved.
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页码:123 / 128
页数:6
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