ShanghaiTech University Knowledge Management System
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 |
ISSN | 0935-9648 |
EISSN | 1521-4095 |
发表状态 | 已发表 |
DOI | 10.1002/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). |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
修改评论
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。