报告内容摘要

Over the past decade, great efforts have been devoted to developing proton exchange membrane (PEM) fuel cells that use hydrogen fuel and oxygen from the air to produce electricity, for example, for automotive applications. Vehicle test data suggest that the U.S. Department of Energy (DOE) targets for hydrogen storage—a 250-mile range and a refueling time of less than 3 min—can be met with high-pressure hydrogen storage tanks. Now, the main challenge is the design of cheap and stable fuel cell catalysts. Among them, Pt, though very expensive, is the best catalyst and is hard to be replaced in a short term. It is well accepted that the activity and stability of Pt catalysts are highly dependent on their shape and size.  Our strategy is to use nanotechnology to significantly increase the activity and durability of Pt-based catalysts through morphology, and size control. We have developed several advanced techniques, such as green chemistry, chemical vapor deposition (CVD), atomic layer deposition (ALD), to fabricate a series of novel nanostructured Pt catalysts, such as nanowires (NWs), nanotubes (NTs), sub-nanoclusters, and single atoms, etc. All these new types of catalysts exhibit much enhanced activity (up to 10 times) and stability (up to 6 times) compared to the commercially-used Pt/C nanoparticle catalysts, for fuel cells.

报告人简介

Dr. Shuhui Sun joined INRS (http://www.inrs.ca/english/about-us/overview-inrs), as an assistant professor in 2012. His research interests focus on the development of multi-functional nanomaterials for clean energy conversion and storage. Specifically, Dr. Sun mainly works in the areas of controlled synthesis of graphene, N-doped graphene, carbon nanotubes, metal and metal oxide nanostructures, and nanocomposites as well as their applications in fuel cells, Li batteries, supercapacitors, and water treatment.

He has published over 45 papers in peer-reviewed scientific journals (e.g., Angew, Chem. Int. Ed., Scientific Reports, Advanced Materials,…), 2 book chapters, and has given over 30 conference presentations and invited talks, and hold 2 US patents. His entire publications have been cited for over 1750 times with an H-index of 26. He has received a series of prestigious academic awards, such as Quebec Merit Scholarship, Alexander Graham Bell Canada Fellowship, ISE Travel Award for Young Electrochemists, and Governor General's Gold Medal (Canada). He is the member of ISE (International Society of Electrochemistry), ECS (Electrochemical Society), CSC (Canadian Society of Chemistry), CQMF, Plasma Quebec, UNESCO Chair MATECSS, and Full Member of the Sigma Xi Society. He is the review editor of Frontiers in Energy Storage, and the editor board member of Journal of Nanotechnology, and ISRN Nanomaterials.

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