The development of novel advanced materials for energy conversion and storage is offundamental importance in meeting the challenges presented by global warming and air pollution that result from excess fossil fuel consumption. In situ investigation of the formation mechanisms of advanced materials during their preparation and subsequent structural transformation, together with their electronic transitions during operation, offers insights into the design of new materials with improved performance for energy conversion and storage systems.First a brief introduction to in situ spectroscopic techniques will be given,this will be followed by a discussion of the use of in situ spectroscopies to elucidate the formation and operational mechanisms of several advanced materials for energy conversion and storage reactions – for example the formation mechanisms of bimetallic nanoparticles (b-NPs) for energy conversionstudied by in situ X-ray absorption spectroscopy (XAS). Such approaches allow he monitoring of changes in the alloying extent and surface composition of b-NPs, during the course of synthesis, both of which are pivotal in energy conversion and catalytic reactions. This session will also report in situ spectroscopic observations of the structural transformation and electronic transitions of electrode materials and the formation mechanisms of the solid-electrolyte-interphase (SEI) on electrode surfaces during energy storage reactions. By the use of such spectroscopic methods as discussed here our understanding of the charge-discharge and SEI formation mechanisms of electrode materials in battery systems can be advanced in a rational manner to improvethe performance of energy storage systems.

Prof.Bing Joe Hwang isthe Chair ProfessorofTaiwan Tech.,the Presidentof the Electrochemical Society ofTaiwan,the Academicianof Asia Pacific Academy ofMaterials, the ForeignMember of the Academy of Sciences ofLisbon, and the AssociateEditor of ACS Sustainable Chemistry &Engineering. He is also the

thedirector of Sustainable Energy DevelopmentCenter, the ISEFellow of International Society ofElectrochemistry, the ChairProfessor of Green Technology, Far Eastern Y.Z. Hsu Science and Technology Memorial Foundation, andthe ResearchFellow & Outstanding Research Fellow.Inaddition,he wasawardedtheNational Professorship, Ministry of Education ofTaiwan,theJinKaiyingAward of Taiwan Institute of Chemical Engineers, and TECO Award in ChemicalEngineering and MaterialsScience,the AcademicAward in Engineering and Applied Science,Ministry ofEducation, and theOutstanding research award, MOST,Taiwan.Prof.Hwang holds over 24 patents and has 340 publications. His research interestsare focus on theElectrochemistry,Nanostructured Materials, EnergyStorageand Conversion and Lithium ion batteries.