Self-Assembled 1T-MoS2/Functionalized Graphene Composite Electrodes for Supercapacitor Devices

• DOI: 10.1021/acsaem.1c02203
• Publication Date: 2022-01-11T22:32:17Z
• Authors: Yuling Zhuo; Eric Prestat; Ian A. Kinloch; Mark A. Bissett
• Keywords: Molybdenum disulfide

Two-dimensional (2D) materials such as graphene and molybdenum disulfide (MoS2) have been investigated widely for applications in energy storage, including supercapacitors, due to their high specific surface area, potential redox activity, mechanical flexibility. However, electrodes comprising either pure MoS2 failed reach restacking of the layered structure poor electrical conductivity. It has shown previously that composite made from a mixture partially counteract these issues; however, performance is still limited by mixing at nanoscale. Herein, we form true electrode chemically functionalizing so negatively charged can self-assemble with positively 1T-MoS2 give an alternating layer structure. These alternately restacked 2D were then used produce supercapacitor electrodes, storage properties characterized. This stacked increased interlayer spacing which was indicated increase intensity (001) peak X-ray diffraction spectra. Furthermore, typically metastable stabilized interaction functionalized graphene, preventing it reverting back 2H phase, observed when pristine used. The using 4-bromobenzenediazonium or 4-nitrobenzenediazonium, latter giving optimal capacitance mixed MoS2. alternative graphene–MoS2 confirmed Raman spectroscopy electron microscopy, leading (290 F cm–3 0.5 A g–1) 90% retention after 10 000 cycles.