报告题目：材料创新建设净零排放未来

报 告 人：悉尼科技大学清洁能源技术中心主任 汪国秀 教授

报告时间：2023年12月14日（星期四）上午9：30

报告地点：莫干山校区材料楼C306会议室

报告人简介：

Guoxiu Wang is the Director of the Centre for Clean Energy Technology and a Distinguished Professor at the University of Technology Sydney (UTS), Australia. Professor Wang is an expert in materials chemistry, electrochemistry, energy storage and conversion, and battery technologies. Currently, he serves as an Associate Editor for Electrochemical Energy Reviews (Springer-Nature), and an Associate Editor for Energy Storage Materials (Elsevier). His research interests include lithium-ion batteries, lithium-air batteries, sodium-ion batteries, lithium-sulfur batteries, and electrocatalysis for hydrogen production. Professor Wang has published more than 700 refereed journal papers. His publications have attracted over 73,000 citations with an h-index of 148 (Google Scholar). He has been recognised as a highly cited researcher in both Materials Science and Chemistry by Web of Science/Clarivate Analytics. Professor Wang is an elected Fellow of the European Academy of Sciences (EurASc), a Fellow of the International Society of Electrochemistry (ISE), and a Fellow of the Royal Society of Chemistry (RSC).

报告内容摘要：

Global warming and climate change is the biggest challenge facing humanity in the 21^st century. My centre mainly focuses on developing efficient energy devices for sustainable energy production, storage, and conversion.

In this talk, I will briefly introduce my team’s achievements in several key sustainable energy technologies through rational materials design and innovative materials synthesis. These include (i) Electrochemical catalysts for green hydrogen production^1,2. Single-atom catalysts offer a pathway to cost-efficient catalysis with the minimal amount of precious metal used but creating them and keeping them stable during operation is a challenge. Double transition-metal MXene nanosheets, Mo2TiC₂T_x were fabricated with abundant exposed basal planes and Mo vacancies in the outer layers by electrochemical exfoliation. The developed catalyst exhibits an outstanding catalytic ability with a low overpotential and a mass activity about 40 times greater than the commercial platinum-on-carbon catalyst; (ii) Lithium-ion and lithium-air batteries for electrification of road transport such as electric vehicles^3-5. I will report a recent development on an ionic liquid bearing the redox active 2,2,6,6-tetramethyl-1-piperidinyloxy moiety, which serves multiple functions as a redox mediator, oxygen shuttle, lithium anode protector, as well as electrolyte solvent. The additive contributes a 33-fold increase of the discharge capacity in comparison to a pure ether-based electrolyte; (iii) Low-cost rechargeable batteries for grid-scale renewable energy^6,7. Sodium-based batteries are being considered as a promising system for low-cost stationary energy storage and conversion, owing to the natural abundance of sodium. Several electrode materials and electrolytes were synthesized for sodium metal batteries and sodium-sulfur batteries; (iv) Rational design of electrolyte systems for improving the safety of high-energy batteries⁸; and (v) Facile and sustainable recycling of spend lithium-ion batteries⁹.

参考资料：

1.J.Q. Zhang, G.X. Wang et al., Nature Catalysis, 1 (2018), 1, 985.

2.X.X. Yu, G.X. Wang et al., J. Am. Chem. Soc. 14 (2019) 7537.

3.J.Q. Zhang, G.X. Wang et al., Nature Communications 10 (2019) 602.

4.J.Q. Zhang, G.X. Wang et al., Science Advances 8 (2022) eabm1899.

5.T.Y. Wang, G.X. Wang et al., Nature Communications 11 (2020) 5429.

6.Y. Xu, G.X. Wang et al., Nature Communications 14 (2023)925.

7.B. Sun, G.X. Wang et al., Advanced Materials 31 (2019) 1903891.

8.Yuefeng Meng, D. Zhou, G.X. Wang et al., Nature Energy 8 (2023) 1023.

     9. J. Xu, G.X. Wang et al., Science Advances 8 (2022) eabm7948

温馨预告：报告结束后有一个座谈会，主题是：青年学生和青年教师如何成长，成才以及如何面向未来。请大家积极参加。