[CCoE Notice] Seminar: X-rays Show Operating Principles of Energy Storage Materials * MH180, Business School * 10:30 am, Friday, October 11, 2019 * Michael F Toney * SLAC National Accelerator Laboratory *

[Knudsen, Rachel W]

***** Seminar *****
Department of Electrical and Computer Engineering
Materials Engineering Program
Center for Integrated Bio and Nano Systems
  October 11, 2019
10:30 a.m., Room: MH180, Business School
X-rays Show Operating Principles of Energy Storage Materials
Michael F Toney
SLAC National Accelerator Laboratory
Abstract: How materials function and operate in realistic environments depends strongly on their physical and chemical structure from atomistic to the meso- and macro-scale. To understand and improve this functionality requires in-situ and operando investigations of this structure. We have developed and used X-ray scattering, spectroscopies, and imaging to obtain this insight in materials for photovoltaics, energy storage, hydrogen storage and thermochemical water splitting. In this talk, I will briefly describe X-ray methodologies we have developed for in-situ and operando investigations with a focus on energy storage. I will cover three topics: i) nanoscale insight into solid electrolyte interfaces (SEI) on Si anodes where we show that the native oxide has a profound impact on the SEI composition and structure; ii) understanding the nature of oxygen redox in Li-excess cathodes where show that oxygen redox results from short metal-oxygen bonds and peroxo-like species that form on local disordering of the lattice; iii) and cycling of Li in Li metal anodes where we show how trace amounts of water additives changes the Li metal morphology.
Bio: Michael Toney is head of the Materials Sciences Division and a distinguished staff scientist at the SLAC National Accelerator Laboratory. He is a pioneer in the use of X-ray diffraction and small angle scattering for the determination of atomic structure of electrode-electrolyte interfaces and in energy storage and for the determination of molecular and mesoscale structure of organic and polymeric thin films. Toney received his BS from Caltech and his PhD from the University of Washington in surface physics. He spend one year as a postdoc at the Risoe National Lab (now DTU) in Denmark, where he participated in some of the first surface X-ray diffraction experiments. He then began working at IBM Almaden Research in materials sciences. He left IBM in 2003 to join SLAC and Stanford, where he began programs in sustainable energy materials focusing on solar energy and energy storage.
Contact Prof. Yao (yyao4 at Central.UH.EDU) if you would like to meet with Dr. Toney.
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