时间：2021年8月7日（周六）下午3:00-4:30

Time：7 August, Saturday 2021, 3:00-4:30 PM

地点：西湖大学云栖校区2号楼313室

Venue: Room 313, 3F, Building 2, Yunqi Campus

主持人：西湖大学工学院PI 徐宇曦

Host: Dr. Yuxi Xu, PI of School of Engineering, Westlake University

主讲嘉宾/Speaker：

李泓教授

Prof. Hong Li

中国科学院物理研究所

Institute of Physics, Chinese Academy of Sciences

主讲人简介/Biography:

李泓，中国科学院物理研究所研究员，国家杰出青年基金获得者，科技部先进能源领域储能子领域主题专家，工信部智能电网技术与装备重点专项项目责任专家，国家新能源汽车创新中心技术专家。主要研究方向为高能量密度锂离子电池、固态锂电池、电池失效分析、固态离子学。提出和发展了高容量纳米硅碳负极材料，基于原位固态化技术的混合固液电解质高能量密度锂离子电池。合作发表SCI学术论文400余篇，引用超过3万次，授权60余项专利。承担了科技部重点研发计划新能源汽车试点专项长续航动力电池项目、基金委固态电池重点项目、北京市科委固态电池重点项目。 

Hong Li is a professor in Institute of Physics, Chinese Academy of Sciences. His current interests are high energy density lithium batteries, solid batteries and fundamental solid state ionic problems. He has published over 400 papers in peer-reviewed journals with over 35000 times citation and the H-factor is 97. He has filed over 200 patents and 60 have been granted. He is the regional editor of Solid State Ionics and Ionics. He serves as the scientific committee member of MOST and MIIT in China. He is a board member in International Meeting of Lithium batteries and International Society of Solid State Ionics.

讲座摘要/Abstract:

液态电解质锂离子电池由于较高的能量密度、功率密度、循环寿命以及较低的成本，推动着消费电子、电动汽车、规模储能、航空航天、国家安全等几乎所有领域的电动化发展。未来还有很多创新的策略可以进一步提升液态锂离子电池的性能，但如果将固态电解质部份或全部取代液态电解质，有可能可以匹配高容量含锂负极、充电到高电压、不易热失控、高温性能稳定性好。这样有望实现本质安全、单体电芯大容量、实际能量密度更高、电芯集成效率更高、充放电倍率更高、实现智能热管理、电芯具备超长循环寿命、生产效率更高、系统成本更低。本报告将介绍我们对全固态电池实用化面临的挑战以及采用原位固态化技术的应对策略，欢迎各位老师和同学批评指正。

Nonaqueous lithium ion batteries have been used in 3C, EV, stationary energy storage, aerospace and security, due to its balanced and excellent performances in energy density, power density, cycle life and low cost. Many strategies have been developed to improve their performances, leading to step-by-step technological progresses. However, increasing specific energy could bring serious safety concern due to the thermal runaway. All-solid-state batteries without any liquid electrolyte would theoretically improve the battery safety, because of the “nonflammable” character for solid-state electrolytes. However, all-solid-state batteries still face huge challenges in materials selection, battery design, cell manufacturing, and cost control, since it is difficult to create atomic scale solid-solid contact at electrolyte/active materials or electrolyte/electrode interface. In our opinion, an effective solution to the current issues is to firstly develop lithium batteries with coexisting solid and liquid electrolyte, especially to develop hybrid solid-liquid electrolyte batteries based on in-situ solidification technology. And then, it is possible to evolve into all-solid-state lithium batteries along with deep understanding and precise control of in-situ solidification reactions.

讲座联系人/Contact：

工学院办公室

戴老师 daixueping@westlake.edu.cn