讲座名称：周惠久论坛——Surface Mediated Electrocatalysts upon laser Irradiation Technique for Water Electrolysis

讲座时间：2023年12月18日  上午 10:00

讲座地点：创新港校区 躬行楼 材料学院 3-2011会议室

讲座人：黄一中 教授

讲座人介绍：

        黄一中（Yizhong Huang），南洋理工大学终身教授，材料微观组织结构表征领域的国际著名专家、学者，主要从事新型纳米功能材料、纳米器件以及材料在微/纳米尺度失效等方面的研究工作，近期工作集中在电化学能源转化和存储以及技术商业转化尝试。

        黄一中教授于1998年在北京科技大学毕业获博士学位，2003起在英国牛津大学参与教学（Faculty Member）与研究工作。2010年起就职于新加坡南洋理工大学材料科学与工程学院，并兼职牛津大学访问学者 (Academic Scholar) ，担任美国化学学会以及国际电化学协会成员，担任全英中国材料协会主席以及《国际纳米科学》和《纳米技术》登刊物客座编辑。已在Nature、Nature communications、Advanced Materials、ACS Nano、Advanced Functional Materials等国际顶级期刊上发表论文300余篇，被引用次数超过14000次，H因子56，受邀在国际会议上作主旨/邀请报告四十余次，部分研究成果正在进行商业转化，同时还创办有一家高科技与研发公司。

摘要：Hydrogen energy is considered a clean, abundantly available fuel with high energy density. Besides, hydrogen can be a superior medium that stores and transports the energy in a chemical form, which can improve the flexibility and efficiency of the energy system. One of the most significant hydrogen conversion systems is water electrolysis, which has been widely implemented to generate hydrogen from earth-abundant water. The electrochemical conversion from electrical energy to chemical energy in hydrogen form requires overcoming a high energy barrier. Therefore, water electrolysis always accompanies catalysis to facilitate hydrogen generation efficiency. In this case, developing novel electrocatalysts with low cost and excellent performance becomes a key focus in research to promote the progress of next-generation electrochemical energy conversion techniques.

This talk will focus on improving the catalytic performance of electrocatalysts by using surface modifications based on the laser irradiation technique. Two kinds of surface modification approaches, vacancy engineering, and heteroatom doping are carried out by laser irradiation to manipulate the active sites of the electrocatalysts in novel, facile, and efficient manners. For the vacancy engineering strategy, one of the promising OER electrocatalysts, Co3O4, was grown to form nanosheet arrays followed by laser irradiation to generate massive vacancy defects. The laser irradiation ablated the Co3O4 surface to form nanosized holes, which exposed more active sites on Co3O4. Through controlling the laser parameters, the morphologies of the Co3O4 were manipulated. High-angle annular.

主办单位：

材料学院

金属材料强度国家重点实验室