2D transition metal carbide (MXene) thin film for EMI shielding

Chong Min Koo Materials Architecturing Research Center, Korea Institute of Science and Technology KU-KIST Graduate School of Converging Science and Technology, Korea University E-mail: koo@kist.re.kr

Abstract: MXenes are a family of 2D transition metal carbides, nitrides, and carbonitrides with the general formula Mn1XnTx (n = 1, 2, or 3; M = transition metal, e.g. Ti, Nb, Mo; X = C and/or N; T = surface termination, e.g. – OH, –F, –O). Unlike other 2D materials, MXenes offer an attractive combination of high electronic conductivity (~5000 S/cm), hydrophilicity, and processability. Transition metal carbide (MXene) have been considered as an effective EMI shielding material since outstanding EMI shielding effectiveness of MXene was reported in 2016. 10m-thick Ti3C2 MXene film had the shielding effectiveness over 60 dB. However, still it is lack of understanding EMI shielding behavior of MXene materials, especially, at the atom-scale thickness, because it is hard to make uniform atom-thick film. In this presentation, we present the EMI shielding behavior of MXene thin film with atom-level thickness, which were prepared through a self-assembly method. It reveals that MXene is very good for ultra-thin film shielding applications.

Biography: Chong Min Koo recieved his BS degree from Hanyang University in 1997 and Ph.D. degree from Chemical Engineering Department of Korea Advanced Institute of Science and Technology in 2003. He performed a postdoctoral fellowship in Minnesota University for two years (2003-2005) and works for LG Chemicals in two years (2005- 2007). He is currently serving as a center head of Materials Architecturing Research Center, Korea Institute of Science and Technology (KIST), and a professor of KU-KIST Graduate School of Science and Technology, Korea University. He won the several awards including LG Group Best Research and Development Award (2007), KIST Best Researcher Award (2016, 2017), Songgok Award (2017), Young Scientist Award in the Korean Society of Industrial and Engineering Chemistry (2017), Best publication award in Korea Polymer Society (2018) and Best Korean Scientist Award from KRF (2018). His research interest covers 2D nanomaterials like transition metal carbides (MXene) and graphene and their polymer nanocomposites for EMI shielding, thermal conduction, actuators and energy storage device applications.