123rd General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Exhibition Hall 2
Time 4월 19일 (금요일) 11:00~12:30
Code MAT.P-395
Subject Layered Metal Carbide Nanosheet as an Efficient Additive for Exploring High Performance Hybrid Electrode for Supercapacitor
Authors Xiaoyan Jin, Seong-Ju Hwang*
Department of Chemistry and Nanoscience, Ewha Womans University, Korea
Abstract Efficient supercapacitor electrode materials of mesoporous metal oxide-metal carbide nanocomposites can be synthesized by incorporating small amount of exfoliated MXene (i.e. Ti3C2) nanosheets into restacked metal oxide nanosheets. The common negative surface charges of the exfoliated MnO2 and Ti3C2 nanosheets make possible the formation of stable colloidal mixture of both the nanosheets. The addition of proton into this anionic colloidal mixture yields self-assembled MnO2-Ti3C2 nanocomposites. The obtained MnO2-Ti3C2 nanocomposites show much better electrode performance for supercapacitor than does the restacked MnO2 nanosheet, underscoring the beneficial effect of Ti3C2 addition on the electrochemical activity of metal oxide nanosheet. The improvement of electrode performance upon the incorporation of Ti3C2 nanosheet is attributable to the enhancement of charge transfer property, as evidenced by electrochemical impedance spectroscopy. The present work clearly demonstrates the useful role of exfoliated MXene nanosheet as a conductive additive for exploring efficient metal oxide nanosheet-based hybrid electrode materials.
E-mail jinxiaoyan313@hotmail.com