【20周年院庆系列报告之六】Nanoengineering S cathodes toward low-cost and superior room-temperature sodium-sulfur batteries

发布时间:  2020/10/15  许毅   浏览次数:   返回

报告人:Dr.Yunxiao Wang,University of Wollongong

报告时间2020/10/18 13:00-16:30

报告地点:腾讯会议:https://meeting.tencent.com/s/3HVzjmLzzudQ,

会议ID:567 578 103,直播地址:https://meeting.tencent.com/l/8zRKeuBpKtd3

Abstract:Rechargeable room-temperature sodium-sulfur (RT-Na/S) batteries represent one of the most attractive technologies for future stationary energy storage due to high energy density and low cost. The S cathodes can react with Na ions via two-electron conversion reactions (Figure 1), thus achieving ultrahigh theoretical capacity (1672 mAh g-1) and specific energy (1273 Wh kg-1). Unfortunately, the sluggish reaction kinetics of the the non-conductive S, severe polysulfide dissolution, and the use of metallic Na cause enormous challenges on the development of RT-Na/S batteries. In our group, we focus on addressing the fatal polysulfide dissolution via various remedies in terms of intact physical confinement, strong chemical interaction, and effective electrolysis. Our research efforts contribute to the development of RT-Na/S batteries towards practical applications.

Biography:

Dr. Yun-Xiao Wang is a research fellow at the Institute for Superconducting and Electronic Materials (ISEM), University of Wollongong (UOW). She received her bachelor’s degree (2008) from Hebei Normal University and her master’s degree (2011) from Xiamen University. She obtained her Ph.D. degree from the University of Wollongong in 2015. Her current research interest is renewable energy storage and conversion, including electrocatalysis, lithium/sodium-ion batteries, and lithium/sodium–sulfur batteries.



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