Remote Plasma-Induced Synthesis of Self-Assembled MoS₂/Carbon Nanowall Nanocomposites and Their Application as...

The objective of this study is to investigate the synthesis and influence of MoS₂ on carbon nanowalls (CNWs) as supercapacitor electrodes. The synthesis of MoS₂ on CNW was achieved by the introduction of hydrogen remote plasma from ammonium tetrathiomolybdate (ATTM) without deterioration of the CNWs. The topographical surface structures and electrochemical characteristics of the MoS₂-CNW composite electrodes were explored using two ATTM-dispersed organic solvents-acetonitrile and dimethylformamide (DMF). In this study, CNW and MoS₂ were synthesized using an electron cyclotron resonance plasma. However, hydrogen radicals, which transform ATTM into MoS₂, were provided in the form of a remote plasma source. The electrochemical performances of MoS₂-CNW hybrid electrodes with various morphologies-depending on the solvent and ATTM concentration-were evaluated using a three-electrode system. The results revealed that the morphology of the synthesized MoS₂ was influenced by the organic solvent used and affected both the electrochemical performance and topographical characteristics. Notably, considerable enhancement of the specific capacitance was observed for the MoS₂ with open top edges synthesized from DMF. These encouraging results may motivate additional research on hybrid supercapacitor electrodes and the rapid synthesis of MoS₂ and other transition metal dichalcogenides.