Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides

doi:10.1002/adfm.202106765

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	Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides
	Wang, Qian 1; Gu, Youdi 2; Zhu, Wenxuan 1; Han, Lei 1; Pan, Feng 1; Song, Cheng 1
刊名	ADVANCED FUNCTIONAL MATERIALS
	2021-09-12
页码	9
关键词	barrier decrease noble metals oxygen ion migration perovskite oxides topotactic phase transition
ISSN号	1616-301X
DOI	10.1002/adfm.202106765
通讯作者	Song, Cheng(songcheng@mail.tsinghua.edu.cn)
英文摘要	Transition-metal perovskite oxides constitute a series of functional material systems for electronics, catalysis, and energy-conversion processes, in which oxygen migration and evolution play a key role. However, the stable metal-oxygen (M-O) bond forms a large energy barrier inhibiting ion diffusion. Therefore, seeking efficient and facile approaches to accelerate oxygen kinetics has become a significant issue. Here, the interaction (interfacial charge transfer and cooperative bonding) between noble metal (Pt, Ag) and perovskites oxide (SrCoO3-delta) is employed to weaken the (M-O) bond and decrease the energy barrier of oxygen migration. Noble metal layers serving as oxygen pumps can continuously extract oxygen from oxide films to the atmosphere. The temperature of the topotactic phase transition from perovskite (SrCoO3) to brownmillerite (SrCoO2.5) is remarkably lowered from approximate to 200 degrees C to room temperature. Furthermore, this approach can also be applied to SrFeO3 for similar topotactic phase reduction by moderate thermal activation. The finding of this study paves a promising and general pathway to achieve fast oxygen migration in perovskite oxides, with important application prospects in low-temperature electrodes and high-activity catalysis interface.
资助项目	National Key Research and Development Program of China[2017YFB0405704] ; National Natural Science Foundation of China[51871130] ; National Natural Science Foundation of China[51671110] ; Natural Science Foundation of Beijing Municipality[JQ20010] ; Beijing Innovation Center for Future Chip (ICFC), Tsinghua University
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000694958500001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Beijing Municipality ; Beijing Innovation Center for Future Chip (ICFC), Tsinghua University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166975]
专题	金属研究所_中国科学院金属研究所
通讯作者	Song, Cheng
作者单位	1.Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qian,Gu, Youdi,Zhu, Wenxuan,et al. Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides[J]. ADVANCED FUNCTIONAL MATERIALS,2021:9.
APA	Wang, Qian,Gu, Youdi,Zhu, Wenxuan,Han, Lei,Pan, Feng,&Song, Cheng.(2021).Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides.ADVANCED FUNCTIONAL MATERIALS,9.
MLA	Wang, Qian,et al."Noble-Metal-Assisted Fast Interfacial Oxygen Migration with Topotactic Phase Transition in Perovskite Oxides".ADVANCED FUNCTIONAL MATERIALS (2021):9.