【作者】 孙海波；

【导师】 钟秦；

【作者基本信息】 南京理工大学 ， 环境工程， 2006， 硕士

【摘要】 采用尿素燃烧法制备了Zr掺杂的BaCeO₃钙钛矿型质子固体电解质（BCZY），并用XRD、TG-DTA、SEM、电导率测定和浓差电池电动势测定等方法进行表征。结果表明BCZY具有典型的钙钛矿结构，晶粒尺寸分布在10nm～20nm，具备质子导电能力。 以BCZY为电解质，Co-Mo双元硫化物为阳极催化剂，Ag为阴极组装了单体H₂S固体氧化物燃料电池，对电输出性能进行实验研究。结果表明，单体电池体系获得了最高的开路电压0.72V和最大的电功率密度1.55mW·cm^-2。在600℃～800℃范围内，随着温度和流速的升高，输出电压逐渐增大。采用Co：Mo=2：3催化剂的单体电池输出性能最好。 以燃料电池反应器进行脱除H₂S气体的研究。结果表明，H₂S的转化率随着温度和电流密度的增大而增加；随着反应时间的增加，H₂S的转化率也随之增大，但30min后，H₂S转化率保持稳定；当H₂S流速30ml·min^-1、温度800℃和电流密度12.0mA·cm^-2时，H₂S转化率达71％。更多还原

【Abstract】 Urea combustion method was adopted to prepare BaCeO₃ doped with Zr, proton conductor with perovskite structure.The electrolyte was measured by XRD, TG-DTA, SEM, conductivity test and EMF.The results indicate that BCZY was proton conductor, had perovskite structure.The size distribution was between 10nm to 20nm.In the single fuel cell composed of（Co-Mo）S/BCZY/Ag, the highest OCV, 0.72V and the max power output, 1.55 mW·cm^-2, are obtained.The voltage is enhanced with the elevated temperature and fuel flow rate, between 600℃ to 800℃.The SOFCR obtained the best output with the molar ratio of 2:3.At the same time, the SOFCR was applied to removal H₂S and regenerate sulfur.The results indicate that conversion of H₂S is proportional to temperature （t）, current density （i） and time （T） in a certain arrange.The max conversion of H₂S in the experiments was obtained to 71% at the condition of R_H2S=30ml·min^-1, t=800℃ and i=12.0 mA·cm^-2.更多还原