【14th.Sept.】New Approaches for Enhanced EV Battery Safety and Sustainability
日期：2018-09-14
阅读：584
题目:New Approaches for Enhanced EV Battery Safety and Sustainability
演讲人：Dr. Zheng Chen，NanoEngineering department,University of California, San Diego.
时间：2018年9月14日，上午10点
地点: 化学B楼410会议室
邀请人：马紫峰教授，李林森特别研究员
Short Bio:
Dr. Zheng Chen is an Assistant Professor in NanoEngineering department, Chemical Engineering and Materials Science Program at University of California, San Diego. He received his B.S. from Tianjin University in 2007 and Ph.D. from UCLA in 2012 (with Prof. Yunfeng Lu), both in Chemical Engineering. He did his postdoc research at Stanford University with Profs. Zhenan Bao and Yi Cui.
He is generally interested in energy storage and conversion, water desalination and environmental sustainability. His research is funded by NSF, DOE, NASA and private companies. Dr. Chen has received some prestigious awards and recognitions.
He was awarded Student Science Talented Award (Tianjin University), Department Outstanding Graduate Award (UCLA), Chinese Government Award for Outstanding Self-Financed PhD Students Studying Abroad, and MRS Graduate Student Award. He has been selected to receive the NASA’s 2018 Early Career Faculty, and the LG Chem Global Battery Innovation Contest (BIC) Award in 2017, and has also been recognized as a 2018 Emerging Investigator of materials for optical, magnetic and electronic devices in Journal of Materials Chemistry C. He was also selected as a Scialog Fellow in Advanced Energy Storage by Research Corporation.
In addition, Dr. Chen has also been recently selected to participate the DOE funded 3-year $15M project on Lithium-ion Battery Recycling R&D Center due to his pioneer work in developing novel chemical engineering process for battery regeneration.
Abstract:
The development of next-generation energy storage devices and systems for electric vehicles (EVs) relies on materials with significantly improved performance and lower cost. The objective of my research is to enhance energy storage performance (e.g. energy capacity, power density, stability, safety) and to reduce the cost of batteries.
In this talk, I will mainly focus on two related topics:
(1) Design of safety-enhanced lithium-ion batteries. The energy and power density of today’s batteries have been significantly improved during the past 15 years. However, battery safety issue remains a big challenge in the field.
Here, I will briefly introduce an internal structure design to regulate the battery safety properties, which is based on a thermo-responsive polymer nanocomposite.
(2) Design of energy-efficient recycling and regeneration process for spent batteries. The increasing amount of lithium ion battery consumption will result in the resource shortage and price increase of lithium and precious transition metals (Co, Ni etc.).
In addition, the wastes generated from disposal of used batteries can cause severe environment pollution. I will talk about an effective strategy to recycle and regenerate spent batteries using a “non-destructive” approach, which will lead to new electrode materials that can show the same level of performance as the native materials.
