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报告题目 |
Tailoring The Nanoscale Architecture of Electrocatalysts for Renewable Energy Conversion |
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报告时间 |
2014年6月25日上午10 : 00 |
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报告地点 |
合肥微尺度物质科学国家实验室一楼科技展厅 |
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报告人 |
Dr. Chao Wang, Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore |
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报告摘要 |
Highly efficient chemical-electrical energy conversion has become the primary target for the development of renewable energy technologies such as water electrolyzers and fuel cells. Such energy conversion to a large extent relies on efficient electrocatalysts that are desired to be highly active, durable and cost-effective. Precious metals such as platinum (Pt) and iridium (Ir) are conventionally used as electrocatalysts, which are not only expensive and scarce, but also have limited activity and/or stability. Novel designs of electrocatalysts and significant improvements of the performance, thereby reducing the usage of precious metals, are needed for scale-up applications of the various electrochemical energy conversion technologies. This presentation will cover two topics: i) Pt-based nanoparticles for electrocatalytic reduction of oxygen; ii) metal oxide and chalcogenide nanocatalysts for water electrolysis. It will discuss organic solution approaches developed for controlled synthesis of the corresponding nanomaterials, nanostructure characterization with state-of-the-art electron microscopic and X-ray spectroscopic techniques, and electrochemical studies for catalytic performance assessment. Structure-property relationships will be elucidated in terms of particle size, shape, composition and surface structure. Mechanisms governing the catalytic enhancement will be depicted by comparing the results with fundamental studies of extended-surface model catalysts and theoretical simulation. |
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报告人简介：⑴现在工作单位及职称 ⑵主要研究方向 ⑶学术成就简述（100字以内）Professor Wang received his B.S in 2004 from the University of Science and Technology of China, and his M.S from Brown University in 2005. He also received his Ph.D. from Brown University (2009) before joining the Argonne National Laboratory in 2012 as a Postdoctoral Fellow. The foreground of sustainability is built on efficient and environment-friendly schemes of energy conversion and storage as well as chemical transformations. In his group, we target such schemes by design, synthesis and functionalization of new materials with nanoscale architectures finely tailored to achieve optimal performance for various applications. The specific topics of their interest include electrochemical/photoelectrochemical CO2 reduction and rechargeable lithium batteries. | |
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参加者：所有感兴趣的老师和学生 | |
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主办单位：微尺度、化学与材料科学学院、外事办 | |