报告题目：Advanced Electrode Materials for Lithium-ion Batteries
报告人：Dr. Chunsheng Wang, Department of Chemical & Biomolecular Engineering
University of Maryland, College Park, USA
时间：2010年7月27日上午10:00 ~ 11:00
地点：曹光彪大楼326室
王春生博士简介：
王春生博士1992年进入买球官网入口材料系学习，1995年买球官网入口材料系博士毕业。1995-1997年转入物理系做博士后。1997年回材料系任副研究员。1998-2003年赴美国德州农工大学的化学和化工系做博士后。2003-2007受聘田纳西理工大学化工系做助理教授。2007年转入马里兰大学化工系做助理教授。研究兴趣包括锂离子电池和低温燃料电池。在国际杂志上发表论文60余篇，论文引用次数（SCI）约900次，其中共2篇超100次。
Advanced Electrode Materials for Lithium-ion Batteries
Abstract: High power and high energydensity Li-ion batteries are a critical enabling technology for the electric vehicles and renewable energy sources such as wind and solar. In this presentation, we present high capacity Si anodes and high power LiFePO4 cathodes. A novel Si anode with three-dimensional porous carbon structures was developed. The carbon scaffold Si anode has a close-knit porous carbon structure that can not only accommodate the Si volume change, but also facilitate the charge transfer reaction. Si anodes enabled by well-patterned 3D Tobacco mosaic virus templateswill also be discussed. This electrode combines genetically modified virus templates for the production of high aspect ratio nano-featured surfaces with electroless deposition to produce an integrated nickel current collector followed by physical vapor deposition and electrochemical deposition of a silicon layer to form a high capacity silicon anode. Finally, a novel galvanostatic intermittent titration technique (GITT) and a novel potentiostatic intermittent titration technique (PITT) for phase transformation LiFePO4 electrodes were developed by integrating mixed-control phase transformation theory with traditional GITT and PITT methods. The contribution of strain accommodation energy to the thermodynamic driving force for phase transformation was assessed.
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材料系
2010年7月26日
