Liu Yu, Zuo Liwen, Jiang Cong, Zheng Dan, Wang Baoyuan
School of Electronic Engineering, Wuhan Vocational College of Software and Engineering, Wuhan, Hubei, PR China.
School of Microelectronics, Hubei University, Wuhan, Hubei 430062, PR China.
iScience. 2023 Jun 1;26(7):107002. doi: 10.1016/j.isci.2023.107002. eCollection 2023 Jul 21.
A combination of yttria stabilized zirconia (YSZ) and Ba(NO) commercial powders was used as electrolytes in the construction of symmetrical SOFC. As X-ray diffraction pattern and Raman spectra revealed, the YSZ-Ba(NO) electrolyte converted into YSZ and yttrium-doped barium zirconate (BZY) composite at 450°C in hydrogen atmosphere. The power maximum () of YSZ-BZY based fuel cell can reach 634.06 mW cm at 450°C. Notly, the can evenly maintain at 300 mW cm as the operational temperature reduced to 390°C. The outstanding cell performance at low temperature indicate the excellent ion conductivity of the composite electrolyte. The promising ion conductivity is originated from the proton conduction of BZY, the oxygen conductivity of YSZ, and the enhanced ion conduction through interface transport. Our work demonstrates that the developed YSZ-BZY electrolyte holds enormous potential for LT-SOFCs.
氧化钇稳定氧化锆（YSZ）和硝酸钡商业粉末的混合物被用作构建对称固体氧化物燃料电池（SOFC）的电解质。如X射线衍射图谱和拉曼光谱所示，YSZ - Ba(NO)电解质在氢气气氛中于450°C转化为YSZ和钇掺杂锆酸钡（BZY）复合材料。基于YSZ - BZY的燃料电池在450°C时的最大功率（）可达634.06 mW/cm²。值得注意的是，随着运行温度降至390°C，功率可均匀维持在300 mW/cm²。该电池在低温下的出色性能表明复合电解质具有优异的离子传导性。这种有前景的离子传导性源于BZY的质子传导、YSZ的氧传导以及通过界面传输增强的离子传导。我们的工作表明，所开发的YSZ - BZY电解质在低温固体氧化物燃料电池方面具有巨大潜力。
