Two Dimensional Layered Materials and Their Heterostructures for Supercapacitor Applications

Abstract

In this study, the electrochemical energy storage properties of Chromium diselenide (CrSe2)/Ti3C2 MXene heterostructure is examined. CrSe2 is a lesser explored layered TMD and is a promising candidate for energy storage applications. MXene on the other hand is an emerging material and is being extensively studied for its unique intrinsic energy storage abilities. CrSe2/Ti3C2 MXene heterostructure electrode displays an enhanced energy storage performance in an alkaline media. The multi-dimensional hierarchical architecture of CrSe2/Ti3C2 MXene results in an increased number of active sites for electrochemical activities and improves the electrochemical stability. The synergistic interplayed effect triggered by fast ionic/electronic transportation, reduced agglomeration and volume expansion etc. can be accounted for by the enhanced electrochemical performance of the heterostructure. An all-solid-state supercapacitor is fabricated to utilize and demonstrate the energy storage ability of CrSe2/Ti3C2 MXene in real time applications. The fabricated device showed a compelling performance during the electrochemical assessment. newline