Guo Qiming, Li Songbo, An Shengli, Sun Runze, Ren Mengyao, Gao Lele, Yan Zhen, Cao Huihui
School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology Baotou 014010 China
School of Rare Earth Industry, Inner Mongolia University of Science and Technology Baotou 014010 China.
RSC Adv. 2025 Mar 25;15(12):9110-9118. doi: 10.1039/d4ra09097g. eCollection 2025 Mar 21.
Solid oxide fuel cells (SOFCs) are a new type of power generation technology that directly converts chemical energy into electrical energy with advantages, such as low environmental pollution and high conversion efficiency. However, these fuel cells suffer challenges, including high operating temperatures and poor stability. In this paper, PrBaSrCo Nb FeO series materials were prepared the sol-gel method and applied as cathode material in SOFCs. X-ray diffraction patterns reveal that the addition of Nb to PrBaSrCoFeO did not change its crystal structure but increased the cell volume, leading to lattice expansion and improved thermal stability. Electron paramagnetic resonance quantitative analysis was conducted on PrBaSrCo Nb FeO . At 800 °C, the lowest area specific resistance (ASR) at = 0.04 was 0.0336 Ω cm, indicating that the addition of Nb significantly improved the oxygen reduction reaction catalytic activity. The power density of the electrolyte-supported single cell increased by 110.6 mW cm. Thus, Nb addition enhances the electrochemical performance of PBSCF cathode materials, and PBSCFNb is a promising cathode material for SOFCs.
固体氧化物燃料电池（SOFCs）是一种新型发电技术，可直接将化学能转化为电能，具有环境污染小、转换效率高等优点。然而，这些燃料电池面临着一些挑战，包括工作温度高和稳定性差。本文采用溶胶-凝胶法制备了PrBaSrCoNbFeO系列材料，并将其用作SOFCs的阴极材料。X射线衍射图谱表明，在PrBaSrCoFeO中添加Nb不会改变其晶体结构，但会增加晶胞体积，导致晶格膨胀并提高热稳定性。对PrBaSrCoNbFeO进行了电子顺磁共振定量分析。在800℃时，当 = 0.04时最低面积比电阻（ASR）为0.0336Ω·cm，表明添加Nb显著提高了氧还原反应催化活性。电解质支撑单电池的功率密度增加了110.6 mW/cm²。因此，添加Nb提高了PBSCF阴极材料的电化学性能，PBSCFNb是一种有前途的SOFCs阴极材料。
