In Situ Investigation of Reversible Exsolution/Dissolution of CoFe Alloy Nanoparticles in a Co-Doped Sr2Fe1.5Mo0.5O6-delta Cathode for CO2 Electrolysis
Lv, Houfu1,2; Lin, Le1,3; Zhang, Xiaomin1; Song, Yuefeng1,2; Matsumoto, Hiroaki4; Zeng, Chaobin4; Ta, Na1; Liu, Wei1; Gao, Dunfeng1; Wang, Guoxiong1
2020-02
发表期刊ADVANCED MATERIALS
ISSN0935-9648
EISSN1521-4095
发表状态已发表
DOI10.1002/adma.201906193
摘要

Reversible exsolution and dissolution of metal nanoparticles in perovskite has been investigated as an efficient strategy to improve CO2 electrolysis performance. However, fundamental understanding with regard to the reversible exsolution and dissolution of metal nanoparticles in perovskite is still scarce. Herein, in situ exsolution and dissolution of CoFe alloy nanoparticles in Co-doped Sr2Fe1.5Mo0.5O6-delta (SFMC) revealed by in situ X-ray diffraction, scanning transmission electron microscopy, environmental scanning electron microscopy, and density functional theory calculations are reported. Under a reducing atmosphere, facile exsolution of Co promotes reduction of the Fe cation to generate CoFe alloy nanoparticles in SFMC, accompanied by structure transformation from double perovskite to layered perovskite at 800 degrees C. Under an oxidizing atmosphere, spherical CoFe alloy nanoparticles are first oxidized to flat CoFeOx nanosheets, and then dissolved into the bulk with structure evolution from layered perovskite back to double perovskite. Electrochemically, CO2 electrolysis performance can be retrieved during 12 redox cycles due to the regenerative ability of the CoFe alloy nanoparticles. The anchoring of the CoFe alloy nanoparticles in SFMC perovskite via reduction shows enhanced CO2 electrolysis performance and stability compared with the parent SFMC perovskite.

关键词carbon dioxide electrolysis cobalt-iron alloy nanoparticles reversible exsolution and dissolution Sr(2)Fe1 35Mo0 45Co0 2O6-delta perovskite
收录类别SCI ; SCIE ; EI
资助项目CAS Youth Innovation Promotion[2015145]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号WOS:000505037200001
出版者WILEY-V C H VERLAG GMBH
WOS关键词ELECTROCATALYTIC ACTIVITY ; PEROVSKITE ; PERFORMANCE ; CATALYST ; ANODE ; PD
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104986
专题物质科学与技术学院_博士生
共同第一作者Lin, Le
通讯作者Wang, Guoxiong
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Coll Energy, Beijing 100039, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
4.Hitachi High Technol Shanghai Co Ltd, Shanghai 201203, Peoples R China
推荐引用方式
GB/T 7714
Lv, Houfu,Lin, Le,Zhang, Xiaomin,et al. In Situ Investigation of Reversible Exsolution/Dissolution of CoFe Alloy Nanoparticles in a Co-Doped Sr2Fe1.5Mo0.5O6-delta Cathode for CO2 Electrolysis[J]. ADVANCED MATERIALS,2020.
APA Lv, Houfu.,Lin, Le.,Zhang, Xiaomin.,Song, Yuefeng.,Matsumoto, Hiroaki.,...&Bao, Xinhe.(2020).In Situ Investigation of Reversible Exsolution/Dissolution of CoFe Alloy Nanoparticles in a Co-Doped Sr2Fe1.5Mo0.5O6-delta Cathode for CO2 Electrolysis.ADVANCED MATERIALS.
MLA Lv, Houfu,et al."In Situ Investigation of Reversible Exsolution/Dissolution of CoFe Alloy Nanoparticles in a Co-Doped Sr2Fe1.5Mo0.5O6-delta Cathode for CO2 Electrolysis".ADVANCED MATERIALS (2020).
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