主题: Versatile 3D porous recycled carbon garments with fully-loaded active materials in the current collector for advanced lithium-ion batteries
主讲人: Hak Yong Kim
地点: 延安路校区纺织科技创新中心楼217
时间: 2019-11-07 09:00:00
主讲人简介：
Hak Yong Kim has been working as a professor at Chonbuk National University since 1998. He received his BSc in textile engineering from Chonbuk National University in 1981. After completing his MSc from Seoul National University in 1983 and PhD degree in textile engineering from the same university in 1993, he was appointed as the professor of organic materials and fiber engineering at Chonbuk National University, Republic of Korea in 1998. He served as the Director of Centre for Healthcare Technology Development (2004-2014) and was also involved in Samyang Co., Ltd., Central Research Institute of Textile (1984-1998). He was involved in the editorial board of various journals including Macromolecules Research (2010-2012), Fiber and Polymers (2005-present), etc. Prof. Kim was the distinguished visiting professor at various universities around the world including University of Massachusetts, Amherst, USA (2004), Donghua University, China (2016) and Zhoanyung University, China (2016) and is currently, a visiting professor at King Saud University, Saudi Arabia from 2010.
He has published hundreds of research articles including 463 SCI papers with more than 21,000 citations and achieved 72 h-index, and also gotten hundreds of Korea registration patents and about 45 foreign patents including USA patents.
内容摘要：
We have developed a new and versatile three-dimensional (3D) porous and the conductive carbon spun fabric (CSF) structure and applied it to the current collector for advanced lithium-ion batteries (LIBs). The 3D porous CSF are manufactured from recycled oxidized polyacrylonitrile (Oxi-PAN) staple fibers via the spinning, the knitting, stabilization, and carbonization process in order. Furthermore, we have demonstrated the conductive T-shirts and gloves and investigated the structural, electrical, mechanical, and thermal properties of the CSF through various analytical methods including Joule heating simulation as well as the deformation simulation. The CSF with its 3D porous structure is applied as a current collector for advanced lithium batteries in order to replace the conventionally used metal-based current collector. During battery performances, the porous 3D network structure of the CSF provides effective diffusion pathway for lithium ions during the charge/discharge processes. Consequently, the CSF shows not only the improved cycling stability than that of the conventional aluminum current collector but also demonstrating high-rate performances at high percentage loading of active materials in the current collector. The pouch-type LIBs with the CSF/LiFePO4 composites electrode exhibits excellent mechanical stability and flexibility with showing a discharge capacity of 148.7 mA h g-1 at 2 C over 250 cycles over the 1200 times bending with a radius of 12 mm.
