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讲准字288号:Surface/Interface of Nanoparticles on the Implication of Electrocatalysis

发布时间:2019-10-14|浏览次数:

讲座报告主题:Surface/Interface of Nanoparticles on the Implication of Electrocatalysis
专家姓名:Shaowei Chen
日期:2019-10-23 时间:15:30
地点:化工楼212报告厅
主办单位:化学化工学院  

主讲简介:Shaowei Chen,加州大学圣克鲁兹分校教授。1996年在Cornell University获得博士学位,1998-2004年在Southern Illinois University工作。2004年起在University of California at Santa Cruz工作。其研究兴趣主要涉及电催化新材料、纳米粒子表界面化学、纳米抗菌材料等。已在Science, Nature Materials, Angew. Chem. Int. Ed., J. Am. Chem. Soc. ACS Nano, Adv. Mater.等国际知名刊物上发表论文300余篇,入选2018年度高被引科学家榜单。担任多个国际期刊的编委。研究专长:电催化新材料、纳米粒子表界面化学、纳米抗菌材料等。

主讲内容:Development of effective technologies for clean and sustainable energy has been attracting great attention. This presentation will focus on two important reactions, oxygen reduction reaction (ORR) for fuel cells and metal-air batteries, and hydrogen reduction reaction (HER) for electrochemical water splitting. To date, the most effective electrocatalysts towards both ORR and HER are based on Pt-group metals. However, the high costs and natural scarcity of Pt have severely limited their broad utilization. In this presentation, we will summarize recent progress in the development of ORR and HER electrocatalysts based on earth-abundant and cost-effective materials. In particular, we will report recent development in the design and engineering of single-atom catalysts for these reactions, which are exemplified with metal, nitrogen-doped porous carbons. The electrocatalytic activity is mostly due to the formation of MNx moieties where the synergistic interactions between the carbon matrix and metal centers facilitate the adsorption of important reaction intermediates. This is strongly supported by results from density functional theory calculations.


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