Kim Jeongin, Park Inyu, Lee Hunhyeong, Shin Dongwook
J Nanosci Nanotechnol. 2015 Jan;15(1):269-72. doi: 10.1166/jnn.2015.8402.
Doped-BaCeO3 has high protonic conductivity at intermediate temperature, but poor chemical stability. In contrast, doped-BaZrO3 is rather stable, but has poor protonic conductivity. In this study, the BCY-BCZY bi-layer system was investigated in the hope of the synergetic improvement of high conductivity and good chemical stability. Nano-sized the BCY and modified-BCZY powders were prepared by the citric-nitrate route and bi-layer electrolyte made of BCY covered with a thin film BCY-BCZY deposited by the electrostatic slurry spray deposition. The improvement of chemical stability, measured in CO2 atmosphere, is turned out to be resulted from the substitution of Zr4+ cation. Overall, the BCY-BCZY bi-layer electrolyte shows promising improvement in chemical stability against produced water on the cathode side during the cell operation.
掺杂的BaCeO3在中温下具有高质子传导率，但化学稳定性较差。相比之下，掺杂的BaZrO3相当稳定，但质子传导率较差。在本研究中，对BCY-BCZY双层体系进行了研究，以期协同提高高传导率和良好的化学稳定性。采用柠檬酸-硝酸盐法制备了纳米尺寸的BCY和改性BCZY粉末，并通过静电浆料喷雾沉积法制备了由BCY覆盖薄膜BCY-BCZY制成的双层电解质。在CO2气氛中测量的化学稳定性的提高被证明是由Zr4+阳离子的取代引起的。总体而言，BCY-BCZY双层电解质在电池运行过程中对阴极侧产生的水的化学稳定性方面显示出有希望的改善。
