多层电解质型中温SOFC

Intermediate temperature SOFC with multi-layer electrolyte

采用柠檬酸法合成了Gd0 1Ce0 9O1 95(GDC)、La0 45Ce0 55O2-σ/2(LDC)、La0 9Sr0 1Ga0 8Mg0 2O2 85(LSGM)电解质材料,并制备了阳极负载型GDC LSGM、LDC LSGM和LDC LSGM LDC多层薄膜电解质单体电池,考察了单体电池的U J特性和功率输出性能。结果显示:GDC LSGM电解质电池没有电流产生;LDC LSGM电解质电池最大输出功率密度最高,800℃时约为0 72W/cm2,但不稳定;LDC LSGM LDC多层电解质电池的开路电压最高,800℃时可达0 814V。

Gd_(0.1)Ce_(0.9)O_(1.95)(GDC), La_(0.45)Ce_(0.55)O_(2-σ/2)(LDC) and La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_(2.85)(LSGM) electrolyte materials were synthesized by the citric method. Anode-supported single cells with GDC-LSGM, LDC-LSGM and LDC-LSGM-LDC multi-layer thin film electrolyte were prepared. The U-J characteristics and output power performance of the single cells were measured. The results showed that no current could be taken from the cell with GDC-LSGM electrolyte.The cell with LDC-LSGM electrolyte gave the maximum output power density of 0.72 W/cm^2 at 800 ℃, but it was not stable. The open circuit voltage of the cell with LDC-LSGM-LDC electrolyte was the highest, reaching to 0.814 V at 800 ℃.