Ruoyu LI , Xiaoyu LI , Jinke ZHANG , Yuan GAO , Yihan LING
{"title":"A high entropy stabilized perovskite oxide La0.2Pr0.2Sm0.2Gd0.2Sr0.2Co0.8Fe0.2O3−δ as a promising air electrode for reversible solid oxide cells","authors":"Ruoyu LI , Xiaoyu LI , Jinke ZHANG , Yuan GAO , Yihan LING","doi":"10.1016/S1872-5813(24)60486-X","DOIUrl":null,"url":null,"abstract":"<div><div>Reversible solid oxide cell (RSOC) is a new energy conversion device with significant applications, especially for power grid peaking shaving. However, the reversible conversion process of power generation/energy storage poses challenges for the performance and stability of air electrodes. In this work, a novel high-entropy perovskite oxide La<sub>0.2</sub>Pr<sub>0.2</sub>Gd<sub>0.2</sub>Sm<sub>0.2</sub>Sr<sub>0.2</sub>Co<sub>0.8</sub>Fe<sub>0.2</sub>O<sub>3−<em>δ</em></sub> (HE-LSCF) is proposed and investigated as an air electrode in RSOC. The electrochemical behavior of HE-LSCF was studied as an air electrode in both fuel cell and electrolysis modes. The polarization impedance (<em>R</em><sub>p</sub>) of the HE-LSCF electrode is only 0.25 Ω·cm<sup>2</sup> at 800 °C in an air atmosphere. Notably, at an electrolytic voltage of 2 V and a temperature of 800 °C, the current density reaches up to 1.68 A/cm<sup>2</sup>. The HE-LSCF air electrode exhibited excellent reversibility and stability, and its electrochemical performance remains stable after 100 h of reversible operation. With these advantages, HE-LSCF is shown to be an excellent air electrode for RSOC.</div></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"53 2","pages":"Pages 282-289"},"PeriodicalIF":0.0000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"燃料化学学报","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S187258132460486X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Energy","Score":null,"Total":0}
引用次数: 0
Abstract
Reversible solid oxide cell (RSOC) is a new energy conversion device with significant applications, especially for power grid peaking shaving. However, the reversible conversion process of power generation/energy storage poses challenges for the performance and stability of air electrodes. In this work, a novel high-entropy perovskite oxide La0.2Pr0.2Gd0.2Sm0.2Sr0.2Co0.8Fe0.2O3−δ (HE-LSCF) is proposed and investigated as an air electrode in RSOC. The electrochemical behavior of HE-LSCF was studied as an air electrode in both fuel cell and electrolysis modes. The polarization impedance (Rp) of the HE-LSCF electrode is only 0.25 Ω·cm2 at 800 °C in an air atmosphere. Notably, at an electrolytic voltage of 2 V and a temperature of 800 °C, the current density reaches up to 1.68 A/cm2. The HE-LSCF air electrode exhibited excellent reversibility and stability, and its electrochemical performance remains stable after 100 h of reversible operation. With these advantages, HE-LSCF is shown to be an excellent air electrode for RSOC.
期刊介绍：
Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.
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