氧化铈基微管固体氧化物燃料电池的制备与性能研究

摘要

The anode-supported solid oxide fuel cells (SOFCs)of ceria-based micro-tubule have been prepared by phase-inversion and vacuum-assisted coating techniques.With La0.6 Sr0.4 Co0.2 Fe0.8 O3-δ-Ce0.8 Sm0.2 O2 -δ(LSCF-SDC)as a cathode,the power output of a single cell can reach 38 and 104 mW /cm2 at 500 ℃ and 550 ℃ respectively,and the corresponding open-circuit voltages (OCVs) 0.74 V and 0.73 V.Furthermore,the OCVs are effectively improved by adding BaZr0.1 Ce0.8 Y0.1 O3 -δ(BZCY)to SDC.The microtubule cell based on BZCY-SDC (BAS)composite electrolyte achieves 0.83 V and 0.81 V at 500 °C and 550 °C respectively, indicating that the BAS is a promising composite electrolyte for the micro-tubular SOFCs.%以相转换与真空辅助浸渍相结合的方法制备了基于氧化铈基的阳极支撑的微管固体氧化物燃料电池。以 La0.6 Sr0.4 Co0.2 Fe0.8 O3-δ－Ce0.8 Sm0.2 O2-δ为阴极，单电池在500℃和550℃时分别获得了38 mW／cm2和104 mW／cm2的功率输出，对应的开路电压分别为0.74 V 和0.73 V。通过在 Ce0.8 Sm0.2 O2-δ（SDC）电解质中引入BaZr0.1 Ce0.8 Y0.1 O3-δ（BZCY）有效地提高了单电池的开路电压，基于 BZCY-SDC （BAS）复合电解质的微管电池在500℃和550℃时分别获得了0.83 V 和0.81 V 的开路电压。结果表明，BAS 是一种非常有前景的可用于微管固体氧化物燃料电池的复合电解质材料。