用于中温固体氧化物燃料电池的LaBaCoMoO阴极的合成与评价
Synthesis and Evaluation of LaBaCoMoO Cathode for Intermediate-Temperature Solid Oxide Fuel Cells.
作者信息
He Shoucheng, Zhang Lanqing, Cai Jiantao, Wu Xingyu, Sun Hanxi, Du Tao
机构信息
School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
出版信息
Materials (Basel). 2022 Aug 25;15(17):5858. doi: 10.3390/ma15175858.
LaBaCoMoO (LBCM, = 0-0.08) cathodes synthesized by a sol-gel method were evaluated for intermediate-temperature solid oxide fuel cells. The limit of the solid solubility of Mo in LBCM was lower than 0.08. As the content of Mo increased gradually from 0 to 0.06, the thermal expansion coefficient decreased from 20.87 × 10 K to 18.47 × 10 K. The introduction of Mo could increase the conductivity of LBCM, which varied from 464 S cm to 621 S cm at 800 °C. The polarization resistance of the optimal cathode LBCM0.04 in air at 800 °C was 0.036 Ω cm, reduced by a factor of 1.67 when compared with the undoped Mo cathode. The corresponding maximum power density of a single cell based on a YSZ electrolyte improved from 165 mW cm to 248 mW cm at 800 °C.
通过溶胶-凝胶法合成的LaBaCoMoO（LBCM，= 0 - 0.08）阴极用于中温固体氧化物燃料电池的评估。Mo在LBCM中的固溶度极限低于0.08。随着Mo含量从0逐渐增加到0.06，热膨胀系数从20.87×10⁻⁶K降至18.47×10⁻⁶K。Mo的引入可提高LBCM的电导率，在800°C时电导率从464 S/cm变化到621 S/cm。最佳阴极LBCM0.04在800°C空气中的极化电阻为0.036Ω·cm²，与未掺杂Mo的阴极相比降低了1.67倍。基于YSZ电解质的单电池在800°C时相应的最大功率密度从165 mW/cm²提高到248 mW/cm²。
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