简介: 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 articles in high profile journals such as Nature Mater, Nature Energy, Nature Communications, JACS etc, with a total of 13,000 citations and h-index 55. He has been invited to contribute to a number of books on nanotechnology and in 2018 Dr. Wang was identified as a Highly Cited Researcher according to Clarivate Analytic’s Essential Science Indicators. 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 including Ashland, Toyota, LG Chem and Enpower Energy Corporation. He has previously served as scientist and researcher at Pacific Northwest National Laboratory and as a visiting student in the Advanced Materials Laboratory at the University of New Mexico/Sandia National Laboratory (Katrina evacuation). Dr. Wang holds Outstanding Research from the Penn State Engineering Alumni Association, DTRA Young Investigators Grant, and MRS Graduate Student Gold awards from Materials Research Society. Donghai is a prolific inventor with over 20 applications filed in the fields of nanomaterials and related for application to batteries, solar and fuel cells, and environmental remediation.
摘要: Li metal and Li-alloy based anode materials are the most promising anodes for next-generation Li batteries. The poor interfacial stability (unstable solid-electrolyte interphase (SEI)) in the battery has been the primary issue hindering their practical application. In this talk, I will present a strategy to reinforce the SEI with desired properties including good tolerance to the Li-based material volume change and efficient surface passivation against electrolyte penetration. The strategy works via introducing multiple functional components bonded to the Li-based material surface into the SEI. The SEI reinforced shows much better stability than the SEI reinforced by electrolyte additive strategy, which is the current state-of-art and commercially used solution to SEI stability issue. I will also present some development of Na-ion ionic conductor for solid-state Na-ion batteries.