Swapnil Ambade1 Ha Ryun Lee1 Tae Hee Han1

1, Hanyang University, Seoul, , Korea (the Republic of)

MXenes, comprising few atoms thick layers of transition metal carbides, nitrides, or carbonitrides are an important class of two-dimensional inorganic compounds that combine metallic conductivity of transition metal carbides and hydrophilic character owing to their hydroxyl or oxygen terminated surfaces. Typically, the accordion-like morphology in Ti3C2Tx MXenes obtained via hydrofluoric acid etched Ti3AlC2 MAX phase comprises a stack of multi-layer MXene that is terminated with various functional groups (Tx) like oxygen (O), fluorine (F), and hydroxyls (OH). To be dispersed in suspension, we carried out delamination of Ti3C2Tx MXene in various solvents like dimethyl sulfoxide (DMSO), tetramethylammonium hydroxide (TMAOH), N-Methyl-2-pyrrolidone (NMP) and Isopropanol (IPA). Our strategies pertaining to the structural and functional manipulation of Ti3C2Tx MXene based on various scalable and controllable delamination methods in correlation to their band structure vis-à-vis electrical properties at various stages of delamination will be discussed. We will also highlight our approaches on energy storage systems based on the directed hybrid of delaminated Ti3C2Tx MXene and various layered double hydroxides (LDHs). Our work highlights how delamination could be effectively utilized for making stable dispersions of MXenes to form various composites with LDHs and modulation of their energy storage capabilities.