SEMINAR

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

2011年度国家重点实验室特邀学术报告

Nanostructure and Defect Enhanced Lithium Ion Intercalation in Film Electrodes

Speaker

Prof. Guozhong Cao

Department of Materials Science and Engineering

University of Washington

时间：2011年05月05日（星期四）上午 10:00

地点：2号楼607会议室（国家重点实验室）

欢迎广大科研人员和研究生参与讨论！

Abstract:

Lithium ion batteries store electrical energy in the form of chemical potential, the same as that in primary batteries; however, the charge-discharge process in lithium ion batteries is more complex as it involves not only Faradaic reactions, but also is accompanied with mass and charge transport and volume change of the electrodes that commonly possess low electrical conductivity. Nanostructured electrodes offer large surface area for Faradaic reaction, short distance for transport, and freedom for dimension change. Nanostructured electrodes with large surface energy and defects may permit easier phase transition that accompanied with lithium ion intercalation and extraction, and thus promise higher intercalation capacity, faster kinetics, as well as improved cyclic stability. This presentation will use several nanostructured electrode films with or without further surface modification to illustrate the enhancement of lithium ion intercalation properties in film electrodes. More specifically, we will review the film electrodes of nanostructured MnO2, V2O5, and LiFePO4 synthesized by various solution-based processes and incorporated with surface or bulk defects through doping or surface treatments.　

CV:

Prof. Guozhong Cao

302M Roberts Hall, Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, U.S.A.

Email; gzcao@u.washington.edu

Prof. Guozhong Cao is Boeing-Steiner Professor of Materials Science and Engineering, University of Washington, Seattle, WA. He has published over 280 refereed papers, authored and edited 7 books and 4 conference proceedings, and presented over 130 invited, keynotes, and plenary talks, and seminars. The technologies from his lab have resulted in two successful spin-off companies in the US. His current research is focused mainly on nanomaterials for energy related applications including solar cells, lithium-ion batteries, supercapacitors, and hydrogen storage.