{"title":"High-performance Sr1.9Fe1.45Pd0.05Mo0.5O6−δ electrode for reversible symmetrical solid oxide cells","authors":"Zhigang Chen, Yinxiao Wang, Yaowei Liu, Biao Wang, Bingbing Niu, Chunling Lu","doi":"10.1016/j.matlet.2024.137639","DOIUrl":null,"url":null,"abstract":"<div><div>Reversible symmetrical solid oxide cells (RS-SOCs) have attracted much attention due to their high energy conversion efficiency and fabrication simplicity. The double perovskite with the general formula A<sub>2</sub>BB’O<sub>6</sub> is often used as the electrode material. In this study, Fe was substituted with Pd in the B-site of Sr<sub>1.9</sub>Fe<sub>1.5</sub>Mo<sub>0.5</sub>O<sub>6−δ</sub> to enhance the electrochemical performance above 50 %. The characterization results showed that the doping of Pd promoted the kinetics of the electrode reaction and thus improved the electrochemical activity. A maximum power density of 870 mW cm<sup>−2</sup> at 800 ℃ on a La<sub>0.9</sub>Sr<sub>0.1</sub>Ga<sub>0.8</sub>Mg<sub>0.2</sub>O<sub>3–</sub><em><sub>δ</sub></em> (LSGM)-supported symmetrical cell with Sr<sub>1.9</sub>Fe<sub>1.45</sub>Pd<sub>0.05</sub>Mo<sub>0.5</sub>O<sub>6-δ</sub> electrode was achieved in the solid oxide fuel cells (SOFCs).</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"378 ","pages":"Article 137639"},"PeriodicalIF":2.7000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X24017798","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Reversible symmetrical solid oxide cells (RS-SOCs) have attracted much attention due to their high energy conversion efficiency and fabrication simplicity. The double perovskite with the general formula A2BB’O6 is often used as the electrode material. In this study, Fe was substituted with Pd in the B-site of Sr1.9Fe1.5Mo0.5O6−δ to enhance the electrochemical performance above 50 %. The characterization results showed that the doping of Pd promoted the kinetics of the electrode reaction and thus improved the electrochemical activity. A maximum power density of 870 mW cm−2 at 800 ℃ on a La0.9Sr0.1Ga0.8Mg0.2O3–δ (LSGM)-supported symmetrical cell with Sr1.9Fe1.45Pd0.05Mo0.5O6-δ electrode was achieved in the solid oxide fuel cells (SOFCs).
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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