固体氧化物燃料电池双钙钛矿正极材料PrBa0.5Sr0.5Co1.5Fe0.5O5+δ的合成及电化学性能

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-10 DOI:10.1016/j.ijhydene.2025.06.124

I-Ming Hung , Debabrata Mohanty , Yu-Rou Lin , Sheng-Wei Lee , Chung-Jen Tseng , Yi-Wen Chen

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引用次数: 0

摘要

本研究研究了PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF)的材料及其电化学性能，以更好地了解其作为高性能正极材料的潜力。利用x射线光电子能谱（XPS）分析了室温和中温条件下影响电极性能的关键因素PBSCF的氧化态。结果显示，在高温下，表面氧化态增加。热重分析（TGA）表明，在连续3个热循环后，其重量有所减少，表明其结构和成分发生了变化。此外，PBSCF表现出优异的导电性，在600°C时达到427.8 S cm−1，在100小时内的最小降解率为0.21%。在800℃下，对称PBSCF电池的面积比电阻为0.071 Ω cm2，突出了其在中温固体氧化物燃料电池（it - sofc）中的应用前景。

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Synthesis and Electrochemical Performance of PrBa0.5Sr0.5Co1.5Fe0.5O5+δ double perovskite cathode material for Solid Oxide Fuel Cell

The material and electrochemical properties of PrBa_0.5Sr_0.5Co_1.5Fe_0.5O_5+δ (PBSCF) are investigated in this study to better understand its potential as a high-performance cathode material. The oxidation state of PBSCF, a critical factor influencing electrode performance is analyzed using X-ray photoelectron spectroscopy (XPS) at both room temperature and intermediate temperatures. The results reveal an increased surface oxidation state at elevated temperatures. Thermal gravimetric analysis (TGA) indicates weight loss after three consecutive thermal cycles, suggesting structural and compositional changes. Furthermore, PBSCF exhibits excellent electrical conductivity, reaching 427.8 S cm⁻¹ at 600 °C with a minimal degradation rate of 0.21 % over 100 h of operation. The area-specific resistance of a symmetrical PBSCF cell is measured at 0.071 Ω cm² at 800 °C, highlighting its promise for intermediate-temperature solid oxide fuel cells (IT-SOFCs).

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.