报告主题

高能量密度锂电电极结构的设计

报告时间

2016年12月31日上午9:30

持续时间

90分钟

报告地点

延安路校区第一会议室

听讲人数

50

报告人及简介

Jianhua Yan, Ph.D.（闫建华博士）

Lawrence Berkeley National Laboratory（美国劳伦斯伯克利国家实验室）

Dr. Jianhua Yan earned his M.S. degree in Microelectronics Engineering from Chinese Academy of Sciences in 2012 and Ph.D. degree in Mechanical Engineering from West Virginia University in 2015. Currently he holds an appointment at Lawrence Berkeley National Laboratory. Dr. Yan seeks to find practical solutions to the challenges associated with flexible electronics and flexible and stretchable lithium batteries use through his cross-disciplinary background.

报告大纲

This talk focuses on some designs of lithium−sulfur batteries, which is a promising next generation rechargeable battery due to its potential high energy density. However, it suffers from major problems including poor cycle performance and low efficiency, mainly due to the high solubility of intermediate poly-sulfides and their side-reactions with the Li-anode. This talk will describe three projects based on Dr. Yan’s research. First, designs of various open-structure functional gradient carbon-S composite cathodes with very high S-loadings that can utilize the high energy density of S-cathode while minimize the migration of poly-sulfide to anode side. Second, designs of fast prelithiation process for carbon/silicon (C-Si) composite anodes by using liquid Π-bond containing aromatic compounds as catalyst. Third, protections of lithium metal anodes.