报告题目：Explorations in Dioxygen Electrochemistry
报告人： Prof. Laurence Hardwick
University of Liverpool, UK
时间： 6月27日（周一) 上午10:00
地点： 化学楼二楼会议室（234）
以下是报告的摘要部分
Abstract :
Two questions rattle around regular in battery research. Can we get anything better than Li-ion batteries? If so, how long do we have to wait for it?
On paper secondary metal-air batteries (such as lithium-air) offer chemists a vision of a battery system that will not only surpass energy storage of state of the art Li-ion, but dramatically exceed it by a factor of three to five. The resulting theoretical numbers on specific energy (Wh/kg) has led to the extrapolation whereby Li-air could be envisioned to provide a technology that could result in an electric vehicle being able to travel for 300 miles without recharge. A worthy goal indeed, if we are to prise significant percentages of the population to part from their fossil fuelled vehicles. However pleasant it is to dream, we have to eventually wake up to reality in order to address the exciting list of research challenges that need to be overcome.
My presentation will begin by discussing the present state of play of metal-air battery research and challenges and then will continue with my specific research interest in this area, which is to understand the interfacial electrode processes involving dioxygen.
Electrode interfacial chemistry varies in scale from sub nm (surface adsorption of reaction intermediates) up to ca. 50-100 nm (solid electrolyte interphase formation). Detection and discrimination of the interfacial region from either the bulk electrode and/ or bulk electrolyte is a substantial technical challenge and requires careful design and control of the experimental conditions.
At Liverpool, my group utilises a number of highly sensitive in situ electrochemical spectroscopic techniques to investigate chemistry at the electrode interface with the sensitivity at the nm scale. I will talk about activities to study the electrochemistry of dioxygen with in situ Raman (surface enhanced and shell isolated nanoparticle variations - SERS and SHINERS) and infrared (surface enhanced infrared absorption - SEIRAS) spectroscopy. The results of which have major relevance to understanding mechanistic processes within metal-air batteries.
欢迎有兴趣的老师同学参加！
固体表面物理化学国家重点实验室
biwn必赢
2016年6月20日
