In Situ X-ray Absorption Spectroscopy Studies of Nanoscale Electrocatalysts

作     者：Maoyu Wang Líneyárnadóttir Zhichuan JXu Zhenxing Feng 

作者机构：School of ChemicalBiologicaland Environmental EngineeringOregon State UniversityCorvallisOR97331USA School of Materials Science and EngineeringNanyang Technological UniversitySingapore639798Singapore 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2019年第11卷第3期

页      面：178-195页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by start-up funds from Oregon State University Part of authors’ work using soft X-ray absorption spectroscopy was performed at beamline 6.3.1 of Advanced Light Source, which is an Office of Science User Facility operated for the U.S.DOE Office of Science by Lawrence Berkeley National Laboratory and supported by the DOE under Contract No. DEAC02-05CH11231 

主　　题：X-ray absorption spectroscopy Electrocatalyst Nanoscale In situ experiments 

摘      要：Nanoscale electrocatalysts have exhibited promising activity and stability,improving the kinetics of numerous electrochemical reactions in renewable energy systems such as electrolyzers,fuel cells,and metal-air *** to the size effect,nano particles with extreme small size have high surface areas,complicated morphology,and various surface terminations,which make them different from their bulk phases and often undergo restructuring during the *** restructured materials are hard to probe by conventional ex-situ characterizations,thus leaving the true reaction centers and/or active sites difficult to ***,in situ techniques,particularly X-ray absorption spectroscopy(XAS),have become an important tool to obtain oxidation states,electronic structure,and local bonding environments,which are critical to investigate the electrocatalysts under real reaction *** this review,we go over the basic principles of XAS and highlight recent applications of in situ XAS in studies of nanoscale electrocatalysts.