2D/2D SnS₂/MoS₂ layered heterojunction for enhanced supercapacitor performance

Abstract

Two‐dimensional (2D) SnS2/MoS2 heterojunction with a 2D/2D novel structure was used as electrode material for enhanced supercapacitor performance. Compared with the sole SnS2, the as‐prepared 2D/2D SnS2/MoS2 layered heterojunction has exhibited great improvement in supercapacitor properties. This novel structure can effectively prevent agglomeration and stacking in electrochemical process, and 2D/2D structure is beneficial to intercalation and desorption of ions in electrochemical processes. The experiment result shows that MoSn5 (samples with 5% MoSn5 mole ratios) display a specific capacitance of 466.6 F/g at the current density of 1 A/g in 0.5 mol/L potassium hydroxide solution, an impressive cycling stability with 88.2% capacitance retention at current density of 4 A/g. In addition, the as‐fabricated symmetric supercapacitor exhibited high energy density of 115 Wh kg−1 at the power density of 2230 Wh kg−1. This work provides a fundamental investigation of 2D/2D layered material synergistic effect on the electrochemical process.

Asymmetric Pseudocapacitors Based on Interfacial Engineering of Vanadium Nitride Hybrids

“…Moreover, these hybrids are also rarely reported. Hybridization of two pseudocapacitor electrode materials has been reported to show attractive SC performance owing to the synergistic pseudocapacitive charge storage processes and the high theoretical capacitance of individual electrodes [ 36 , 37 , 38 ]. In addition to the sluggish progress of carbon-free VN-based hybrids, the engineering of other pseudocapacitor electrodes with VN in LiCl electrolyte is also yet to be reported.…”

Synthesis and enhanced supercapacitor performance of carbon self‐doping graphitic carbon nitride/NiS electrode material

“…In conclusion, the above analysis demonstrates that the combination of TC-g-C 3 N 4 and NiS can improve the electrochemical performance of active electrode materials. Compared with the properties of metal sulfides previously reported (Table 2), [44][45][46][47][48] TC-g-C 3 N 4 /NiS represents idea specific capacitance and cycling performance, which show a good application prospect in supercapacitors.…”

Design of Metals Sulfides with Carbon Materials for Supercapacitor Applications: A Review

“…[ 100 ] Wang et al synthesized the hybrid structure of SnS 2 /MoS 2 hybrids with various contents using the hydrothermal process at 180 and 200 °C for 24 h (Figure 2n). [ 101 ] Iqbal et al synthesized ZnS nanoparticles (Figure 2o) and GO‐supported ZnS nanowebs using the hydrothermal process at 150 °C for 4 h. [ 50 ]…”