基于YBaCoCu-O-SDC复合阴极的固体氧化物燃料电池性能研究

Research on the Properties of Solid Oxide Fuel Cells Based on Composite Cathode of YBaCoCu-O-SDC.

作者信息

Qi Haidong, Fu Xinmin, Liu Minghui, Wang Lizhong, Liu Hongbo

机构信息

College of Information & Technology, Jilin Normal University, Jilin Siping 136000, China.

出版信息

J Nanosci Nanotechnol. 2018 Dec 1;18(12):8403-8408. doi: 10.1166/jnn.2018.16379.

DOI:10.1166/jnn.2018.16379

PMID:30189967

Abstract

The new type of cathode material YBaCo1.4Cu0.6-O5+δ-xSDC (x = 20, 30, 40, 50 wt.%) was synthesized by sol-gel method, electrolyte material of Ce0.8Sm0.2O1.9 (SDC) and La0.9Sr0.1Ga0.8Mg0.2O3-δ (LSGM) were synthesized by glycine combustion, composite cathode materials were prepared by mixing the two materials evenly. The performance was analyzed using the ac impedance spectrum and SEM, the best performance was obtained with the ratio of x = 30%. After 2 hour sintering at 950 °C, YBCC-30%SDC cathode polarization resistance are 0.027 Ω · cm2, 0.043 Ω · cm2 and 0.074 Ω · cm2 at 850 °C, 800 °C, 750 °C, respectively. The performance of single battery YBCC-30SDC/LSGM/SDC/NiO-SDC was tested and the power density reached its maximum of 662 mW/cm2 at 850 °C.

摘要

采用溶胶-凝胶法合成了新型阴极材料YBaCo1.4Cu0.6-O5+δ-xSDC（x = 20、30、40、50 wt.%），通过甘氨酸燃烧法合成了电解质材料Ce0.8Sm0.2O1.9（SDC）和La0.9Sr0.1Ga0.8Mg0.2O3-δ（LSGM），将这两种材料均匀混合制备了复合阴极材料。利用交流阻抗谱和扫描电子显微镜对其性能进行了分析，当x = 30%时性能最佳。在950℃烧结2小时后，YBCC-30%SDC阴极在850℃、800℃、750℃下的极化电阻分别为0.027Ω·cm2、0.043Ω·cm2和0.074Ω·cm2。测试了单电池YBCC-30SDC/LSGM/SDC/NiO-SDC的性能，在850℃时功率密度达到最大值662 mW/cm2。