学科进展系列报告

报告题目： Carbon-Based Nanocomposites as Effective Catalysts for Electrochemical Energy Technologies

报告人：Professor Shaowei Chen

Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064 http://chen.chemistry.ucsc.edu

时间：10月21日下午3:30

地点：江湾化学楼A7032

邀请人：蔡文斌  教授

摘要： 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. 

简介： 陈少伟，男，教授，博导，1968年出生，美国加州大学圣克鲁兹分校化学与生物化学系教授。1991年本科毕业于中国科学技术大学，1996年获得美国康奈尔大学博士学位。1996-1998年在北卡罗莱纳大学教堂山分校从事博士后研究。长期从事与纳米材料相关的电化学研究，对纳米材料的光-电吸收与转化、传输与耦合、及其调控与设计等有重大创新性研究，曾获得国际电化学学会Tajima Prize及美国国家科学基金会事业奖，至今已承担美国国家科学基金会十多个项目。