ABSTRACT

The electrolyte supported intermediate temperature solid oxide fuel cell (IT-SOFC) based on Bi₄V₂O₁₁ (BIVOX) ceramic stabilised by doping with La was investigated. By adding La to the initial composition of BIVOX, stabilisation of the good oxygen ion-conductive γ phase has been achieved. La addition has significantly increased the lifetime of SOFC due to the improved thermodynamic stability of BIVOX electrolyte in reducing (H₂ – fuel) atmosphere. Such fuel cell parameters as: open circuit voltage (OCV), maximum power density (P) and current density (J) in the temperature range 500–800°C and operating time under constant electronic load were determined. Results of the measurements of these electrical parameters for BILAVOX based single cell in function of the operation time and cyclic load changes were also shown. This is the first report on the construction and electrical properties of fuel cells based on BIMEVOX (BIVOX doped with MEtal) ceramics.

摘要

研究了基于通过掺杂 La 稳定的Bi ₄ V ₂ O ₁₁ (BIVOX) 陶瓷的电解质负载中温固体氧化物燃料电池 (IT-SOFC) 。通过在 BIVOX 的初始组成中添加 La，实现了良好的氧离子传导 γ 相的稳定化。由于 BIVOX 电解质在还原（H ₂– 燃料）大气。确定了燃料电池参数，例如：500-800°C 温度范围内的开路电压（OCV）、最大功率密度（P）和电流密度（J）以及恒定电子负载下的运行时间。还显示了基于 BILAVOX 的单电池的这些电气参数随运行时间和循环负载变化而变化的测量结果。这是第一份关于基于 BIMEVOX（掺杂金属的 BIVOX）陶瓷的燃料电池的构造和电性能的报告。