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Diagnosis, Durability and Design of the Cathode for Solid Oxide Fuel Cells

发布时间: 2009-08-11 15:21 | 【 【打印】【关闭】
The State Key Lab of
High Performance Ceramics and Superfine Microstructure
Shanghai Institute of Ceramics, Chinese Academy of Sciences
 
 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室
 
 
 
Diagnosis, Durability and Design of the Cathode for Solid Oxide Fuel Cells
 
 
 
Speaker
 
Dr. Xiao-Dong Zhou
 
Department of Chemical Engineering, University of South Carolina, Columbia, SC, USA
Pacific Northwest National Laboratory, Richland, WA, USA
 
时间:2009年 08月 12日 (星期三)上午 10:00 am
地点:2号楼607会议室
 
联系人:张国军 研究员
 

Abstract
 
Diagnosis, Durability and Design of the Cathode for Solid Oxide Fuel Cells
 
Xiao-Dong Zhou
Department of Chemical Engineering, University of South Carolina, Columbia, SC, USA
Pacific Northwest National Laboratory, Richland, WA, USA
 
In this presentation, I will discuss several key issues related to the cathode of solid oxide fuel cells.  The topics include (1) cross-validation of the polarization of a single cell measured using both ac impedance spectroscopy and dc I-V sweep, (2) the precise determination of the total area specific resistance, and its role in understanding cathodic polarization of LSCF cathodes, (3) approaches to achieve high performance and highly stable LSCF cathode, and (4) degradation mechanism for LSM/YSZ- and LSCF-based cells.  The emphasis will placed on experimental and theoretical approaches to investigate a conjugated phenomenon for the cathode: the dichotomy between performance and performance stability.  I will illustrate these approaches by using the concept of disorder in materials (e.g. lattice defects) to study charge exchange and transport in the components and across the interfaces in an SOFC.
 
In addition, I will briefly discuss my current research on battery electrodes and oxide thermoelectric materials, with an emphasis on the role of defects on transport properties of oxide conductors at nanoscale.
 
 
 

Xiao-Dong Zhou

Senior Research Scientist
Pacific Northwest National Laboratory (PNNL)
Education: 
B.S., Chemical Engineering, ECUST, Shanghai, China (1994)
M.S., Chemical Engineering, ECUST, Shanghai, China (1997)
Ph.D., Materials Science, University of Missouri-Rolla (2001)
 
Experience:
Dr. Zhou is an Adjunct Professor in the Department of Chemical Engineering at University of South Carolina, and a Senior Research Scientist in Energy and Environmental Directorate (EED) at PNNL, which he joined in August 2005 after two-year experience as an Assistant Research Professor at University of Missouri-Rolla (UMR).  Prior to that, he was a Post Doctoral Fellow (2001 to 2004) at UMR. At UMR, as an associate faculty member, he led research programs and supervised graduate students. At PNNL, Dr. Zhou is leading research on materials for energy conversion, including electrodes for solid oxide fuel cells, thermoelectric oxides and fundamental charge transport in low-dimensional oxides.  He has been principal investigator or co-principal investigator of 9 programs on materials development related to energy science and technology, and thermoelectrics.  Since 2001, his early career has been highlighted by 50 peer-reviewed articles that span the areas of structural, transport and magnetic properties of condensed matters; nonstoichiometric chemistry; chemical synthesis and device physics.  In addition, he has published 7 invited book chapters, 3 invited journal articles, and 16 proceedings papers; contributed to over 80 presentations; and received 2 US patents.
 
Professional Service/Recognition:
Dr. Zhou received J. B. Wagner Jr. Young Investigator Award in 2007 from the Electrochemistry Society (ECS).  He received Outstanding Performance Award from PNNL (2007).  He is as an Executive Committee member of High Temperature Materials Division of ECS; and served as the session chairs for a number of symposia. Dr. Zhou is a member of ECS, the American Ceramic Society, and the Materials Research Society (MRS). He has served on NSF program review panels, reviewed proposals for National Science Foundation, Petroleum Research Foundation, Basic Energy Science-DOE, SECA-DOE and University of Missouri Research Board; and reviewed manuscripts for numerous journals. Dr. Zhou served as a judge for Washington State University-Columbia Basin College Student Poster Competition for National Chemistry Week of American Chemical Society (2006) and for Mid-Columbia Science Fair (2007-2009). Dr. Zhou was an invited presenter at the US-Korea Forum on Nanotechnology as one of the four USA Early Career Participants (2007).  In addition, he has given numerous invited presentations and lectures.
 
Research Interests
Fundamental multiscale physics and electrochemistry of materials and interfaces for energy systems, including fuel cells, thermoelectrics, photoelectrochemistry, capacitors, and batteries; opto-electronic materials; nanocrystalline electronic ceramics; biomass; and gas separation membranes for carbon capture; with a special emphasis on investigation of large-scale energy systems.