气候变化领域集成服务门户(CCPortal): Surface decoration accelerates the hydrogen evolution kinetics of a perovskite oxide in alkaline solution

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DOI	10.1039/d0ee01598a
	Surface decoration accelerates the hydrogen evolution kinetics of a perovskite oxide in alkaline solution
	Hu C.; Hong J.; Huang J.; Chen W.; Segre C.U.; Suenaga K.; Zhao W.; Huang F.; Wang J.
发表日期	2020
ISSN	17545692
起始页码	4249
结束页码	4257
卷号	13 期号:11
英文摘要	As an important class of inorganic compounds that exhibit a variety of physical, chemical, and electrochemical properties, ABO3±δ perovskites are generally known as active electrocatalysts for the anodic oxygen evolution reaction (OER). However, the inferior performance for the cathodic hydrogen evolution reaction (HER) limits their wide potential in constructing stable oxide-based alkaline electrolyzers for hydrogen production. Here, we show that the efficient decoration of perovskite oxide (K0.469La0.531)TiO3 (KLTO) via surface ion exchange with Ru cations and nucleation growth of Ti-doped RuO2 (TRO) nanoparticles could form a composite oxide-type electrocatalyst. It enables fast water dissociation with excellent HER activity in alkaline solution, superior to other oxide electrocatalysts and commercial Pt/C. Theoretical and experimental studies imply that the co-existence of surface TRO nanoparticles and the Ru-doped KLTO (RKLTO) substrate synergistically enhances the alkaline hydrogen evolution kinetics. Ti doping into the RuO2 lattice could significantly reduce the barrier of water dissociation to facilitate the Volmer process. The surface doping of Ru in the KLTO substrate could regulate and optimize the hydrogen adsorption free energy. The present strategy represents a new concept for designing oxide-based electrocatalysts related to devices for energy conversion and storage. © The Royal Society of Chemistry.
英文关键词	Alkalinity; Dissociation; Electrocatalysts; Electrolysis; Energy conversion; Free energy; Gas adsorption; Hydrogen evolution reaction; Hydrogen production; Inorganic compounds; Ion exchange; Nanoparticles; Oxygen evolution reaction; Perovskite; Ruthenium compounds; Alkaline solutions; Energy conversion and storages; Hydrogen adsorption; Hydrogen evolution; Oxygen evolution reaction (oer); Perovskite oxides; Surface decoration; Water dissociation; Ruthenium; adsorption; composite; hydrogen; ion exchange; kinetics; nucleation; optimization; perovskite; reaction kinetics; substrate
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/189478
作者单位	State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Center of Materials Science and Optoelectronics Engineering, University of the Chinese Academy of Sciences, Beijing, 100049, China; Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan; Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616, United States; Department of Physics and Center for Synchrotron Radiation Research and Instrumentation, Illinois Institute of Technology, Chicago, IL 60616, United States
推荐引用方式 GB/T 7714	Hu C.,Hong J.,Huang J.,et al. Surface decoration accelerates the hydrogen evolution kinetics of a perovskite oxide in alkaline solution[J],2020,13(11).
APA	Hu C..,Hong J..,Huang J..,Chen W..,Segre C.U..,...&Wang J..(2020).Surface decoration accelerates the hydrogen evolution kinetics of a perovskite oxide in alkaline solution.Energy & Environmental Science,13(11).
MLA	Hu C.,et al."Surface decoration accelerates the hydrogen evolution kinetics of a perovskite oxide in alkaline solution".Energy & Environmental Science 13.11(2020).