主题:1D Nanofiber Technologies: Selective Sensing and Energy Storage Applications

主讲人: II-Doo Kim

地点: 延安路校区纺织科技创新中心楼217

时间: 2019-11-19  15:00:00

主讲人简介：

II-Doo Kim, a full professor in the Department of Materials Science and Engineering (DMSE) at KAIST. He received my PhD degree (2002) in DMSE from KAIST. From 2003 to 2005, he was trained as a postdoctoral fellow at MIT. Prof. Il-Doo Kim’s research group is focused on synthesizing novel and advanced nanofibers through electrospinning, which have been applied in many fields, especially in ultra-sensitive chemical sensors and high performance energy storage system (Li-ion, Na-ion Li-S, and Li-O2 batteries). He has participated in writing 5 book chapters, published 235 peer-reviewed journal articles, and held 198 international patents. He is currently an associate editor of ACS Nano. He has won significant number of awards, including Grand Prize at the 9th KINC Fusion Research Award (2019), the Grand Prize of 2018 National R&D Excellence 100 Selection (2018), the Songok Science Award (2018), the KAIST Technology Innovation Grand Prize 2017 (2017), the Young Ceramist Award in the Korea Ceramic Conference (2016) et al.

内容摘要：

Electrospinning has been recognized as one of the most efficient techniques for producing non-woven fiber webs on the order of several hundreds of nanometers by electrically charging a suspended droplet of polymer solution with/without inorganic precursors or melt. Various types of materials with a high degree of porosity, a large surface area, superior mechanical properties and modified surface functionalities, can be electrospun into nanofiber structures. These materials include polymeric nanofibers as well as metallic and metal-oxide nanofibers which are prepared by a subsequent heat treatment in a reducing or oxidizing atmosphere of metal salt precursor/polymer composite fibers. In particular, the simplicity of the process combined with the possibility of large-scale production through the use of multiple-nozzles (> 10,000 pieces) makes this process very attractive and therefore opens up new commercial markets for diverse applications. In this presentation, I summarize recent progress and a collection of advances, particularly focused on the synthesis, characterization, and utilization of electrospun metal oxide nanofibers. I will end my presentation by suggesting possible future research direction and potential suitability of 3D nanofibers for applications in colorimetric sensors, exhaled breath gas analyzing sensors for early stage disease diagnosis as well as energy storage applications including lithium or zinc ion batteries.