报告题目：Electrolyte Engineering in Zn-Ion Batteries and biomass energy materials（电解液调控稳定Zn离子电池和生物质电池材料）

　　报告人：何冠杰博士（伦敦大学学院）

　　邀请人：王小慧教授

　　报告时间：2023年1月6日上午10:00

　　报告地点（线下）：造纸D楼306会议室

　　报告地点（线上）：腾讯会议（会议号：130 579 716）

　　线上链接：https://meeting.tencent.com/dm/jnB63rAEe5WS

　　欢迎广大师生踊跃参加！

华南理工大学轻工科学与工程学院

制浆造纸工程国家重点实验室

2023年1月3日

　　报告摘要：

　　Under the increasingly severe climate and regulative pressures to achieve carbon neutrality, current electrochemical energy storage systems are in need of a radical upgrade to meet various demands from end users. Aqueous zinc ion batteries (AZIBs) provide sustainable routes to grid-scale energy storage because of their cost and safety advantages, using mild aqueous electrolytes and abundant metallic zinc anodes. Besides, owing to the distinctive merits such as relatively high ionic conductivity, environmental benignity, low risks of flammability and considerable energy density of AZIBs compared with conventional Li-ion batteries, AZIBs are intensively investigated to unleash the potential for practical applications. However, the development of rechargeable AZIBs is plagued by poor reversibility due to a series of intrinsic issues, such as hydrogen evolution and Zn dendrite formation. Significantly, the advances in materials discovery and innovation in device configuration have improved the performance of AZIBs in all aspects, including durability, operating voltage range, energy/power density, and economic availability. Different electrolyte components are investigated intensively to suppress the side reaction on the Zn anodes. However, further improvements are needed, especially for realizing the requirement for high energy density and high stability scenarios. The recent progress of AZIBs technology, such as facile electrolyte components and additives for aqueous AZIBs will be discussed in this talk.

　　水系锌离子电池因具有环境友好、低成本的优点，有望用于下一代大规模储能。然而水系锌离子电池的实际应用受到有关水的副反应和枝晶问题的限制，引入电解液添加剂可以抑制锌阳极上的副反应并扩大水性电解液的工作电位窗口。本报告将介绍我们开发的一种新型的检测锌枝晶的技术手段。关于锌离子基于锌负极保护，此次报告从电解质设计角度出发，主要包括两类研究：一是溶剂化结构调控，二是原位生成SEI层的调控。

　　报告人简介：

　　Dr He is an Assistant Professor in Advanced Propulsion at University College London  (UCL), London/UK. Before his current appointment, he was a member of the faculty at Queen Mary University of London and University of Lincoln, respectively. Dr He obtained his Ph.D. in Chemistry at UCL in 2018. He has also worked as a visiting researcher at the Energy Sciences Centre, Yale University, and postdoctoral research associate at the Electrochemical Innovation Lab at UCL. Dr He has rapidly expanded his research activities, including through a growing number of collaborations in diverse areas from the core focus of materials and devices for aqueous energy storage and conversion, to advanced characterisations and simulations. He is recognized by an “Emerging Investigator” award by Nanoscale, and an “New Investigator Award” (NIA) by the UK EPSRC. Recently, he received a prestigious ERC Starting Grant to support his work on Zn-ion batteries.

　　何冠杰博士，伦敦大学学院化工学院助理教授，主要从事水系电池和电催化材料和器件的研究。主持超过200万英镑科研项目，包括来自欧洲科学委员会，英国工程和物理科学研究理事会，国家自然科学基金委员会和英国皇家协会合作项目，以及企业合作项目。曾获得JMCA，nanoscale新锐科学家，英国工程和物理科学研究理事会新锐学者奖等。

　　Reference:

　　1.G He*, et al. ACS Energy Lett., 2021, 6, 2, 395-403.

　　2.G He*, et al. Joule, 2021, 5, 2845-2903.

　　3.G He*, et al. Angew. Chem. Int. Ed. 2022, e202212695.

　　4.G He*, et al. J. Power Sources, 2022, 542, 231730.

　　5.G He*, et al. Energy Storage Mater. 2022, 53, 638–645.