Abstract Co-doped CeO2 (Ba0.10Ga0.10Ce0.80O3–δ) was synthesized via a cost-effective co-precipitation technique, and the electrochemical properties of the solid oxide fuel cell were studied. The microstructural and surface morphological properties were investigated by XRD and SEM, respectively. The structure of the prepared material was found to be cubic fluorite with an average crystallite size of 36 nm. The ionic conductivity of the prepared BGC (Ba0.10Ga0.10Ce0.80O3–δ) electrolyte material was measured as 0.071 S cm−1. The activation energy was found to be 0.46 eV using an Arrhenius plot. The maximum power density and current density achieved were 375 mW cm−2 and 893 mA cm−2, respectively, at 650 °C with hydrogen as a fuel. This study shows that the prepared co-doped electrolyte material could be used as a potential electrolyte to lower the operating temperature of solid oxide fuel cells.

中文翻译：

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低温固体氧化物燃料电池共掺杂二氧化铈基电解质材料的合成与表征

摘要 通过经济高效的共沉淀技术合成了 Co 掺杂的 CeO2 (Ba0.10Ga0.10Ce0.80O3–δ)，并研究了固体氧化物燃料电池的电化学性能。分别通过XRD和SEM研究了显微结构和表面形态特性。发现所制备材料的结构为立方萤石，平均晶粒尺寸为36 nm。制备的 BGC (Ba0.10Ga0.10Ce0.80O3-δ) 电解质材料的离子电导率测量为 0.071 S cm-1。使用阿伦尼乌斯图发现活化能为 0.46 eV。以氢气为燃料，在 650 °C 下实现的最大功率密度和电流密度分别为 375 mW cm-2 和 893 mA cm-2。