新闻与活动 活动信息

西湖工程讲座系列第15期 | Nicola H. Perry: Tailoring and leveraging chemo-mechanical coupling of perovskite oxides for energy conversion and storage

时间

2022年7月29日(周五)
上午9:00-10:30

地点

线上:ZOOM ID 838 6870 1718

主持

西湖大学工学院 陆启阳博士

受众

全体师生

分类

学术与研究

西湖工程讲座系列第15期 | Nicola H. Perry: Tailoring and leveraging chemo-mechanical coupling of perovskite oxides for energy conversion and storage

时间:2022729日(周五)上午9:00-10:30

Time: 9:00-10:30 am, Friday, July 29, 2022

线上ZOOM  ID 838 6870 1718

Online: ZOOM  ID 838 6870 1718

主持人: 西湖大学工学院 陆启阳 博士

Host:  Qiyang Lu, Assistant Professor, School of Engineering, Westlake University

主讲嘉宾/Speaker:

Prof. Nicola H. Perry

Assistant Professor

Department of Materials Science and Engineering

University of Illinois, Urbana-Champaign

主讲人简介/Biography:

Nicola H. Perry is an Assistant Professor in the Department of Materials Science and Engineering at the University of Illinois, Urbana-Champaign. Her group’s research focuses on point-defect-mediated properties in electro-chemo-mechanically active oxides for energy conversion/storage applications. She received a BS in Materials Science and Engineering and BA in French Studies, magna cum laude, from Rice University in 2005, and a PhD in Materials Science and Engineering from Northwestern University in 2009. After this she held postdoctoral appointments in the Energy Frontier Research Center for Inverse Design at Northwestern University, then at the International Institute for Carbon-Neutral Energy Research (I2CNER at Kyushu University, Japan) and at MIT. Prior to moving to Illinois in 2018, she served as a World Premier Initiative Assistant Professor in I2CNER and a Research Affiliate at MIT. Her awards include a NSF CAREER Award, J. Bruce Wagner Jr. Award from ECS, DOE Early Career Award, two Kakehni Awards from JSPS, and Edward C. Henry best paper award from ACerS.

讲座摘要/Abstract:

Solid-state electrochemical devices – electrolyzers, fuel cells, and batteries – require materials that can transport ions rapidly, catalyze interfacial reactions, and withstand the chemical stresses inherent in operation. The relevant materials properties (conductivity, catalytic activity, and chemical expansivity) derive in part from the populations and dynamics of point defects – atomic scale anomalies including vacancies, interstitials, dopants, and electronic species. This talk will focus on our recent work uncovering the relationships between such defect equilibria/kinetics, strain, and functional properties in ion-conducting perovskite oxides. Case studies to be highlighted include: 1) lowering deleterious chemical expansivity in ceramics that “breathe,” 2) raising surface catalytic activity through chemo-mechanical actuation, and 3) boosting ionic conductivity through strain engineering.  We systematically tailor the structure and chemistry of both bulk and thin-film ceramics, through sol-gel and pulsed laser deposition methods, respectively. We then apply various in situ diffraction, spectroscopic, electrochemical, optical, thermogravimetric, and dilatometric characterization methods up to ~1000 °C in precisely controlled chemical potential environments to assess links between defect chemistry, crystal/micro-structure, and resulting functional behavior under dynamic conditions. By understanding and tailoring chemo-mechanical coupling, we are able to develop new electrodes and electrolytes that are more efficient and durable.

讲座联系人/Contact:

工学院石怀玮

shihuaiwei@westlake.edu.cn