Yiying Wu: Ohio State University

Apr 21, 2010 | 3:00 PM - 4:00 PM

Yiying Wu

Assistant Professor of Chemistry, Ohio State University

Oxides, graphene and their composites for Li-ion batteries and dye-sensitized solar cells

April 21, 2010 | 3:00pm | MRL 2053

Abstract:

I will present our progress on functional materials for energy conversion and storage.  I will first discuss Co3O4 nanowire arrays.  Co3O4 is a versatile and multi-functional material with exciting applications in catalysis, electrocatalysis, Li-ion batteries and solar selective absorbers. I will talk about the growth mechanism of Co3O4 nanowire arrays, their electrocatalytic properties toward oxygen evolution reaction, and their use in Li-ion batteries.  I will then discuss our work on graphene-based composites for Li-ion batteries. The idea is to utilize the high electric conductivity and large surface area of graphene to enhance the battery capacity and rate capability.  Finally, I will discuss oxide semiconductors for dye sensitized solar cells (DSCs).  Zinc stannate (Zn2SnO4) will be used as an example of our systematical study of the energetics of the conduction band and valence band of Zn2SnO4 nanoparticles by optical, electrochemical, and photoelectrochemical methods and their promising uses in DSCs.

 

Biography:

Yiying Wu received his B.S. in chemical physics from the University of Science and Technology of China in 1998, and his Ph.D. in chemistry from the University of California, Berkeley with Professor Peidong Yang in 2003.  He then did postdoctoral research with Professor Galen D. Stucky at the University of California, Santa Barbara, and joined the chemistry faculty at The Ohio State University in the summer of 2005.  He won the Cottrell Scholar Award in 2008 and NSF-CAREER award in 2010.

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