Event date: 04Feb 2020

Tuesday 4 Feb 2020

Three-dimensional microstructure measurements of SOFCs and batteries: electrode microstructure and long-term durability - Prof. Scott Barnett

  • 2.15pm to 3.15pm

Ian Wark Theatre, CSIRO Clayton

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Tuesday 4 February 2020, 2.15pm – Ian Wark Theatre, Clayton

Three-dimensional microstructure measurements of SOFCs and batteries: electrode microstructure and long-term durability

Prof Scott Barnett

Prof. Scott Barnett
Northwestern University, USA

Abstract

Quantitative three-dimensional (3D) analysis of electrode microstructure is a means for understanding electrochemical performance and observing how microstructural evolution leads to degradation. This talk will describe 3D electrode tomography measurements of SOFC and battery electrodes made using focused ion beam scanning electron microscopy, transmission x-ray microscopy, and atom-probe tomography. For Ni-YSZ SOFC electrodes, for example, measured particle coarsening during high-temperature ageing is correlated with decreases in three-phase boundary density and increases in polarization resistance, and a model developed to predict long-term degradation. For battery electrodes, measured LiCoO2 3D microstructure is used to simulate charge-discharge dynamics and atom-probe tomography is used to obtain atomic-scale views of the Li2MnO4 cathode-electrolyte interphase.

Bio

Scott A. Barnett is a Professor in the Materials Science and Engineering department at Northwestern University. The department is consistently ranked amongst top three materials science program in USA, and amongst top 10 in the world. His research focuses on oxide materials with energy applications, including Li-ion battery electrodes, solid oxide fuel cells (SOFCs), Solid oxide electrolysis (SOECs) and reversible solid oxide cells (ReSOCs). He has worked extensively on three-dimensional tomography of electrode microstructure for understanding electrochemical processes and degradation phenomena in both fuel cells and Li-ion batteries. His work has been cited more than 28,000 times with h index of 83.

Scott received his Ph.D. in Metallurgy from the University of Illinois at Urbana-Champaign in 1982, took his present position at Northwestern University in 1986, and has also held positions as a Fulbright Guest Professor at Centro Atomico Bariloche, Otto M√łnsted Guest Professor at the Danish Technical University, Cheng Tsang Man Endowed Professor at Nanyang Technological University, and as a Visiting Scientist at Los Alamos National Laboratory and Linkøping University in Sweden. He has been active in the Electrochemical Society, the American Ceramic Society, and the AVS, and has earned a number of awards, including Electrochemical Society Fellow, AVS Fellow, and Office of Naval Research Young Investigator.


If you are interested in further discussion with the speaker, please contact Dr. Ani Kulkarni, CSIRO Energy (Aniruddha.kulkarni@csiro.au)


Science areas: General Science

Event type: Conference or seminar