气候变化领域集成服务门户(CCPortal): Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films

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DOI	10.1039/c7ee00628d
	Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films
	Lee S.A.; Oh S.; Hwang J.-Y.; Choi M.; Youn C.; Kim J.W.; Chang S.H.; Woo S.; Bae J.-S.; Park S.; Kim Y.-M.; Lee S.; Choi T.; Kim S.W.; Choi W.S.
发表日期	2017
ISSN	17545692
起始页码	924
结束页码	930
卷号	10 期号:4
英文摘要	Transition metal oxides have been extensively studied and utilized as efficient catalysts. However, the strongly correlated behavior which often results in intriguing emergent phenomena in these materials has been mostly overlooked in understanding the electrochemical activities. Here, we demonstrate a close correlation between the phase transitions and oxygen evolution reaction (OER) in strongly correlated SrRuO3. By systematically introducing Ru-O vacancies into the single-crystalline SrRuO3 epitaxial thin films, we induced a phase transition in crystalline symmetry which resulted in the corresponding modification of the electronic structure. The modified electronic structure significantly affects the electrochemical activities, so a 30% decrease in the overpotential for the OER activity was achieved. Our study suggests that a substantial enhancement in the OER activity can be realized even within single material systems, by rational design and engineering of their crystal and electronic structures. © The Royal Society of Chemistry 2017.
英文关键词	Crystalline materials; Electronic structure; Transition metal compounds; Transition metals; Crystalline symmetry; Efficient catalysts; Electrocatalytic activity; Electrochemical activities; Emergent phenomenon; Epitaxial thin films; Oxygen evolution reaction; Transition-metal oxides; Thin films; catalysis; crystal structure; design; electrochemistry; film; hercynite; oxide group; phase transition
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190492
作者单位	Department of Physics, Sungkyunkwan University, Suwon, 16419, South Korea; Institute of Basic Science, Sungkyunkwan University, Suwon, 16419, South Korea; Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon, 16419, South Korea; Department of Energy Sciences, Sungkyunkwan University, Suwon, 16419, South Korea; Materials Modeling and Characterization Department, Korea Institute of Materials Science, Changwon, 51508, South Korea; Department of Physics, Inha University, Incheon, 22212, South Korea; Hybrid Materials Research Center, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul, 05006, South Korea; Department of Physics, Pusan National University, Busan, 46241, South Korea; Department of Physics, Chung-Ang University, Seoul, 06974, South Korea; Busan Center, Korea Basic Science Institute, Busan, 46742, South Korea; Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
推荐引用方式 GB/T 7714	Lee S.A.,Oh S.,Hwang J.-Y.,et al. Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films[J],2017,10(4).
APA	Lee S.A..,Oh S..,Hwang J.-Y..,Choi M..,Youn C..,...&Choi W.S..(2017).Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films.Energy & Environmental Science,10(4).
MLA	Lee S.A.,et al."Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films".Energy & Environmental Science 10.4(2017).