A high entropy stabilized perovskite oxide La_(0.2)Pr_(0.2)Sm_(0.2)Gd_(0.2)Sr_(0.2)Co_(0.8)Fe_(0.2)O_(3−δ)as a promising air electrode for reversible solid oxide cellsOA北大核心
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_(0.2)Pr_(0.2)Gd_(0.2)Sm_(0.2)Sr_(0.2)Co_(0.8)Fe_(0.2)O_(3−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 0.25Ω·cm^(2) at 800℃ in an air atmosphere.Notably,at an electrolytic voltage of 2 V and a temperature of 800℃,the current density reaches up to 1.68 A/cm^(2).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.
LI Ruoyu;LI Xiaoyu;ZHANG Jinke;GAO Yuan;LING Yihan
School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China School of Computer Science,Huainan Normal University,Huainan 232001,ChinaSchool of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,ChinaSchool of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,ChinaSchool of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,ChinaSchool of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China
化学化工
reversible solid oxide cellhigh entropy stabilized perovskiteair electrodeelectrochemical performance
《燃料化学学报(中英文)》 2025 (2)
P.282-290,9
supported by Fundamental Research Funds for the Central Universities(2023KYJD1008)the Science Research Projects of the Anhui Higher Education Institutions of China(2022AH051582).
评论