In this work, we compare the capacitive behaviour of 1T-MoS2, 2H-MoS2, graphene and 1T-MoS2/graphene composite using symmetrical coin cell architecture. The electrodes were prepared by filtering a known volume of the respective dispersion over pre-weighed polyvinylidene fluoride membrane using syringe pump dispenser. The gravimetric capacitance of 1T-MoS2 was over 100 F g-1 in aqueous solution which is higher than the gravimetric capacitance obtained using 2H-MoS2 or graphene electrodes. The capacitance performance of 1T-MoS2 was further enhanced by making a composite electrode with highly conducting graphene. A volumetric capacitance of over 560 F cm-3 in an aqueous solution and 250 F cm-3 in a non-aqueous solution were achieved using these composite electrodes. The composite electrode displayed capacity retention of over 90 % after 5,000 cycles. The enhanced capacitance in the composite material was probably due to a synergistic effect between 1T-MoS2 and graphene where graphene enhances the overall conductivity of the composite whilst also reducing the re-aggregation of the sheets.
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