气候变化领域集成服务门户(CCPortal): Highly active and thermally stable single-atom catalysts for high-temperature electrochemical devices

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DOI	10.1039/d0ee01680b
	Highly active and thermally stable single-atom catalysts for high-temperature electrochemical devices
	Shin J.; Lee Y.J.; Jan A.; Choi S.M.; Park M.Y.; Choi S.; Hwang J.Y.; Hong S.; Park S.G.; Chang H.J.; Cho M.K.; Singh J.P.; Chae K.H.; Yang S.; Ji H.-I.; Kim H.; Son J.-W.; Lee J.-H.; Kim B.-K.; Lee H.-W.; Hong J.; Lee Y.J.; Yoon K.J.
发表日期	2020
ISSN	17545692
起始页码	4903
结束页码	4920
卷号	13 期号:12
英文摘要	Single-atom catalysts provide unique catalytic properties and maximize the atom utilization efficiency. While utilizing them at elevated temperatures is highly desirable, their operating temperature is usually kept below 300 °C to prevent isolated atoms from agglomerating. Moreover, their applications in high-temperature electrochemical devices have been hindered by the lack of suitable processing techniques for catalyst loading. Herein, we report single-atom Pt/ceria nanocatalysts that are highly active and thermally stable in solid oxide cells (SOCs) operating at 600-800 °C. Our urea-based chemical solution process creates strong Pt-O-Ce interactions that securely anchor isolated Pt atoms to the surface of ceria nanoparticles and suppress their high-temperature migration. These single-atom Pt/ceria nanocatalysts are loaded in the oxide fuel electrode of a SOC via an in situ synthetic process, which reduces the polarization resistance from 28.2 to 0.82 Ohm cm2 at 600 °C. This electrode outperforms the state-of-the-art Ni-based fuel electrode by up to 10 times and delivers extremely high performance in full SOCs in fuel cell and electrolysis modes. Furthermore, it stably operates at 700 °C for over 500 h under realistic operating conditions. Our results provide guidance to resolve the critical issues for the practical use of single-atom catalysts in various industrial processes and accelerate the commercial development of next-generation high-temperature energy devices. This journal is © The Royal Society of Chemistry.
英文关键词	Cerium oxide; Electrodes; High temperature applications; Nanocatalysts; Solid oxide fuel cells (SOFC); Synthetic fuels; Thermodynamic stability; Urea; Catalytic properties; Commercial development; Elevated temperature; High-temperature electrochemical; Operating condition; Operating temperature; Polarization resistances; Processing technique; Atoms; catalysis; catalyst; concentration (composition); electrochemical method; electrochemistry; equipment; high temperature; temperature effect
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/189423
作者单位	Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul, 02792, South Korea; Department of Energy Engineering, Hanyang University, Seoul, 04763, South Korea; Nanomaterials Science and Engineering, Korea University of Science and Technology (UST), Kist School, Seoul, 02792, South Korea; Department of Materials Science and Engineering, Korea University, Seoul, 02841, South Korea; Department of Chemical Engineering, Hanyang University, Seoul, 04763, South Korea; Carbon Composite Materials Research Center, Korea Institute of Science and Technology, Jeonbuk, 55324, South Korea; Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea; Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, South Korea; Department of Mechanical Engineering, Yonsei University, Seoul, 0.722, South Korea; Yonsei-KIST Convergence Research Institute, Seoul, 02792, South Korea
推荐引用方式 GB/T 7714	Shin J.,Lee Y.J.,Jan A.,et al. Highly active and thermally stable single-atom catalysts for high-temperature electrochemical devices[J],2020,13(12).
APA	Shin J..,Lee Y.J..,Jan A..,Choi S.M..,Park M.Y..,...&Yoon K.J..(2020).Highly active and thermally stable single-atom catalysts for high-temperature electrochemical devices.Energy & Environmental Science,13(12).
MLA	Shin J.,et al."Highly active and thermally stable single-atom catalysts for high-temperature electrochemical devices".Energy & Environmental Science 13.12(2020).