The Pennsylvania State University, USA
By Prof. Donghai Wang, the Pennsylvania State University, USA.
Metal and alloy anode materials are the most promising anode for next-generation batteries. The interfacial instability in the electrochemical energy storage devices has been the primary issue hindering their practical application. In this talk, I will present approaches on de novo designing and architecting the stable interphases on electrode materials using chemically and electrochemically active materials. The strategy works via introducing multiple functional components into the polymer composite which can bond to the Li-based material surface to participate in the formation of the SEI. The reinforced SEI shows much better stability than the SEI generated by electrolyte additive strategy. The functional-material-derived interfaces/interphases present desirable ionic conductivity, density, homogeneity, and mechanical strength. The interfaces/interphases reinforced by the interfacial materials show much better stability than that reinforced by conventional strategies such as using electrolyte additive-commercially used solution to interface stability issues. Our findings open a new way to design stable electrochemically stable interfaces in electrode materials for next-generation electrochemical energy storage.
Biography
Dr. Donghai Wang is a Professor at the Pennsylvania State University serving at Departments of Mechanical Engineering and Chemical Engineering, Intercollege Materials Science and Engineering Program. He is an ardent researcher responsible for the execution of a multitude of grants, oversight of numerous doctoral students and postdoctoral fellows, and over 100 published peer-reviewed journal articles. He has been invited to contribute to a number of books on nanotechnology and identified as a Highly Cited Researcher in 2018-2019 according to Web of Science. He has served principal investigator roles for numerous DOE and NSF grants totaling many millions of dollars and in support of a multitude of private corporations. He has previously served as scientist and researcher at Pacific Northwest National Laboratory before joining Penn State University. Dr. Wang is a prolific inventor with over 20 applications filed in the fields of nanomaterials and related for application to energy storage techniques.