MoS₂/polyaniline/functionalized carbon cloth electrode materials for excellent supercapacitor performance

Abstract

In this study, molybdenum disulfide (MoS₂), polyaniline (PANI) and their composite (MoS₂/PANI) were facilely prepared <i>via</i> a liquid-phase method and <i>in situ</i> polymerization. An MoS₂/PANI/functionalized carbon cloth (MoS₂/PANI/FCC) was facilely constructed by a drop-casting method. MoS₂/PANI-10/FCC displays remarkable electrochemical performances, and its specific capacitances varied from 452.25 to 355.5 F g^-1 at current densities ranging from 0.2 to 4 A g^-1, which were higher than those of MoS₂/CC (from 56.525 to 7.5 F g^-1) and pure PANI/CC (319.5 to 248.5 F g^-1), respectively. More importantly, the MoS₂-10/PANI/FCC electrode has a long cycling life, and a capacity retention of 87% was obtained after 1000 cycles at a large current density of 10 A g^-1. Moreover, the MoS₂/PANI-10/FCC-based symmetric supercapacitor also exhibits excellent rate performance and good cycling stability. The specific capacitance based on the total mass of the two electrodes is 72.8 F g^-1 at a current density of 0.2 A g^-1 and the capacitance retention of 85% is obtained after 1000 cycles.