摘要
固体氧化物燃料电池(Solid Oxide Fuel Cell,SOFC)是一种清洁、高效的能量转换装置,其性能主要受制于阴极的氧还原反应速率。传统高性能阴极材料以钴基材料为主,其价格昂贵、热膨胀系数大、化学稳定性差等制约了钴基材料的应用。为此,需要大力发展无钴阴极材料,具有钙钛矿结构(ABO_(3))的SrFeO_(3-δ)基材料是一种良好的离子-电子混合导体氧化物,它有巨大的潜力替代钴基材料。通过综述SrFeO_(3-δ)基阴极材料的掺杂改性,总结了A位、B位以及A/B位共掺杂的元素和掺杂量对SrFeO_(3-δ)的晶体结构、氧的非化学计量、热膨胀系数、电导率、氧传输和电化学性能等的影响。这些掺杂方式为发展和改性新型无钴阴极材料提供了一些新颖的策略。
Solid oxide fuel cell(SOFC)is a clean and efficient energy conversion device,whose performance is closely dependent on the oxygen reduction reaction at the cathode.The traditional high performance cathodes contained cobalt,which have several issues such as high cost,thermal expansion mismatch and poor chemical stability.Therefore,the development of cobalt-free cathode has attracted strong attention in recent years.Perovskite(ABO_(3))structured SrFeO_(3-δ)-based oxide is a good mixed ionic-electronic conductor,which has a great potential to replace the cobalt-based materials.In this review,various elemental doping approaches are summarized,including A-site,B-site and A/B sites co-doping.The effects of doping element and content on the crystal structure,oxygen non-stoichiometric ratio,thermal expansion coefficient,electrical conductivity,oxygen transport property and electrochemical performance of SrFeO_(3-δ) are discussed.These doping methods could be used as novel strategies for modification of new cobalt-free SOFC cathode materials.
作者
宦道明
张璐
彭冉冉
夏长荣
HUAN Daoming;ZHANG Lu;PENG Ranran;XIA Changrong(CAS Key Laboratory of Materials for Energy Conversion,Department of Materials Science and Engineering,University of Science and Technology of China,Heifei 230026,Anhui,China;Energy Materials Center,Anhui Estone Materials Technology Co.Ltd,Hefei 230088,Anhui,China)
出处
《陶瓷学报》
CAS
北大核心
2022年第1期1-13,共13页
Journal of Ceramics
基金
国家自然科学基金(52102323,51972298)
中国博士后科学基金(2021M703055)
国家重点研发计划项目(2021YFB4001401)
国科学院重点部署项目(ZDRW-CN-2021-3-1)。
