现代技术陶瓷2025，Vol.46Issue(6)：485-519,35.DOI:10.16253/j.cnki.37-1226/tq.2025.06.001
锶铁钼基双钙钛矿材料在固体氧化物电池中的应用
Application of Sr2Fe2-xMoxO6-δ-Based Double Perovskite Materials in Solid Oxide Cells
摘要
Abstract
As a highly efficient electrochemical energy conversion device with fuel flexibility and high energy efficiency,solid oxide cell(SOC)shows great potential in power generation,energy storage,and synthesis of high-value-added chemicals.As the core components of SOC,the fuel and air electrodes need to have excellent thermal stability,hybrid conductivity,catalytic activity,and carbon and sulfur poisoning resistance at high temperatures and in oxidizing/reducing environments.Sr2Fe2-xMoxO6-δ-based double perovskite(SFM)has become a research hotspot for SOC electrode materials in recent years due to its unique double perovskite structure,tunable chemical composition,high electron-ion mixed conductivity,and good redox stability.In this review,we systematically review the progress of SFM-based materials in applying SOC fuel electrodes and air electrodes,focusing on their structural properties and performance optimization strategies in different reaction environments. The crystal structure of SFM double perovskite is characterized by alternately arranged FeO6 and MoO6 octahedra that can form two-dimensional oxygen ion transport channels and significantly reduce the oxygen ion migration barrier.Meanwhile,the degeneracy of Fe3+/Fe2+and Mo6+/Mo5+provides the electronic conductance and realizes the synergistic electron-ion transport.Since the A-,B-,and O-site elements of SFM have the potential to be replaced by other ions,the electronic structure and oxygen vacancy concentration of SFM can be precisely regulated when it is used as different reaction electrodes,thus optimizing its hybrid conductivity and electrocatalytic activity.As a fuel electrode,SFM-based bicarbonate shows excellent fuel adaptability,with excellent catalytic performance in a wide range of fuels such as hydrogen,alkanes,syngas,and ammonia,and its carbon resistance and long-term stability are better than those of traditional cermet electrodes.In addition,SFM-based electrodes also exhibit electrolytic performance and stability in the electrolysis of H2O and CO2 to produce fuels comparable to that of cermet oxides and other chalcogenide materials.As air electrodes,the high oxygen vacancy concentration of SFM-based bilayers also shows their potential application in oxygen reduction reaction,and the combination of proton conductive modifications,such as doping and in-situ dissolution,can also expand their application in the electrolysis of H2O and CO2 by proton-conducting SOC.The review also provides a comprehensive discussion on various strategies to improve the performance of the materials under different reaction conditions,including second-phase composite,impregnation,elemental doping,defect design,and in-situ dissolution,which can enhance the adsorption and activation capacity of the electrodes for reactants by increasing the reactive sites and constructing the heterogeneous interfaces,and improve the long-term stability of the cells. Although SFM-based electrode materials show a broad application prospect in SOC,problems such as Sr elemental segregation at high temperatures,structural phase transition in reducing atmosphere,and performance degradation during long-term operation must be solved.In the future,we must combine in situ characterization and computational simulation to deeply analyze the charge transport mechanism,surface reaction kinetics,and decay mechanism of SFM-based double perovskite.Through electrode design and multifunctional synergistic modification strategies,it is expected to realize the precise control of nanoparticle components and crystal structure,and develop new electrode materials with both high activity and durability.关键词
固体氧化物电池/双钙钛矿/电极/电化学/锶铁钼基Key words
solid oxide cells/double perovskite/electrode/electrochemical/Sr2Fe2-xMoxO6-δ-based分类
化学化工引用本文复制引用
周露,刘亚萍,李程,颜冬,李箭,贾礼超..锶铁钼基双钙钛矿材料在固体氧化物电池中的应用[J].现代技术陶瓷,2025,46(6):485-519,35.基金项目
国家重点研发计划(2024YFF0506300) （2024YFF0506300）
国家自然科学基金(52472202). （52472202）
