Enhancing CO2 catalytic activation and direct electroreduction on in-situ exsolved Fe/MnOx nanoparticles from (Pr,Ba)(2)Mn2-yFeyO5+delta layered perovskites for SOEC cathodes

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	Enhancing CO2 catalytic activation and direct electroreduction on in-situ exsolved Fe/MnOx nanoparticles from (Pr,Ba)(2)Mn2-yFeyO5+delta layered perovskites for SOEC cathodes
	Zhu, Jianxin; Zhang, Wenqiang; Li, Yifeng; Yue, Wangxu; Geng, Ga; Yu, Bo
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2020-07-05
卷号	268 页码:1-8
关键词	Solid oxide electrolysis cell In-situ Fe growth Direct CO2 electrolysis Density functional theory Energy barrier
ISSN号	0926-3373
英文摘要	Perovskite-based oxides with exsolved nanoscale transition metal particles are promising cathode materials for direct electrocatalytic reduction of CO2 in the conversion from electrical power to chemical energy through solid oxide electrolysis cells (SOECs). In this paper, a facile method for the in-situ growth of Fe/MnO2 nanoparticles from double-layered perovskite (Pr,Ba)(2)Mn2-yFeyO5+delta substrate was developed and the mechanism of enhanced CO2 catalytic activation was studied by combined experimental characterization and first-principle calculations. We have showed that introducing A-site deficiencies in (Pr,Ba)(2)Mn1-xFexO3+delta can promote in-situ exsolution of Fe from a nonspontaneous process to a spontaneous one thermodynamically. The exsolved Fe particles exhibit significantly enhancement effect, contributing to a highly catalytic performance of direct CO2 electrolysis (638 mA/cm(2) current density under 1.60 V). Such an enhancement is attributed to the promotion of CO2 chemical adsorption, as well as the facilitation of electron transfer from the exsolved nano-particles to CO2.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44567]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Zhu, Jianxin,Zhang, Wenqiang,Li, Yifeng,et al. Enhancing CO2 catalytic activation and direct electroreduction on in-situ exsolved Fe/MnOx nanoparticles from (Pr,Ba)(2)Mn2-yFeyO5+delta layered perovskites for SOEC cathodes[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,268:1-8.
APA	Zhu, Jianxin,Zhang, Wenqiang,Li, Yifeng,Yue, Wangxu,Geng, Ga,&Yu, Bo.(2020).Enhancing CO2 catalytic activation and direct electroreduction on in-situ exsolved Fe/MnOx nanoparticles from (Pr,Ba)(2)Mn2-yFeyO5+delta layered perovskites for SOEC cathodes.APPLIED CATALYSIS B-ENVIRONMENTAL,268,1-8.
MLA	Zhu, Jianxin,et al."Enhancing CO2 catalytic activation and direct electroreduction on in-situ exsolved Fe/MnOx nanoparticles from (Pr,Ba)(2)Mn2-yFeyO5+delta layered perovskites for SOEC cathodes".APPLIED CATALYSIS B-ENVIRONMENTAL 268(2020):1-8.