Investigation of samarium and neodymium co-doped BaCeO3 electrolyte for proton-conducting solid oxide fuel cells

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL Chemical Physics Letters Pub Date : 2024-09-21 DOI:10.1016/j.cplett.2024.141650

Jihai Cheng, Hao Liang, Xuhang Zhu

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Abstract

BaCe_0.8Sm_0.2-_xNd_xO_3-δ (x = 0, 0.05, 0.1, 0.15) powder was prepared using the glycine-nitrate combustion method, its crystal structure, microscopic morphology and electrochemical properties were investigated. X-ray diffraction analysis showed that the BaCe_0.8Sm_0.2-_xNd_xO_3-δ powder with orthorhombic perovskite structure could be obtained after calcined at 1150 °C. Scanning electron microscopy showed that BaCe_0.8Sm_0.2-_xNd_xO_3-δ sintered samples exhibited a dense structure. Electrochemical impedance tests showed that the substitution of Nd³⁺ improved the electrical conductivity of the BaCeO₃-based electrolyte materials. The proton conductivity of BaCe_0.8Sm_0.15Nd_0.05O_3-δ samples reaches a maximum value of 0.035 S cm⁻¹ in a wet air environment at 700 °C.

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用于质子传导型固体氧化物燃料电池的钐和钕共掺杂 BaCeO3 电解质的研究

利用硝酸甘油燃烧法制备了 BaCe0.8Sm0.2-xNdxO3-δ（x = 0、0.05、0.1、0.15）粉末，并对其晶体结构、显微形貌和电化学性能进行了研究。X 射线衍射分析表明，在 1150 ℃ 煅烧后可得到具有正交包晶结构的 BaCe0.8Sm0.2-xNdxO3-δ 粉末。扫描电子显微镜显示，BaCe0.8Sm0.2-xNdxO3-δ 烧结样品结构致密。电化学阻抗测试表明，取代 Nd3+ 提高了 BaCeO3 基电解质材料的导电性。在 700 °C 的湿空气环境中，BaCe0.8Sm0.15Nd0.05O3-δ 样品的质子电导率达到 0.035 S cm-1 的最大值。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.