Growth Control of MoS₂ Nanosheets on Carbon Cloth for Maximum Active Edges Exposed: An Excellent Hydrogen Evolution 3D Cathode

Abstract

To greatly improve the hydrogen evolution reaction (HER) performance, it is the key approach to expose as many active edges of MoS2 as possible. This target is the research hotspot and difficulty of MoS2 which is a promising HER catalyst. In this work, we realized the active-edges control of MoS2 nanosheets on carbon cloth (CC) by growth control during the synthesis procedure. Moreover, MoS2 nanosheets vertically grown on carbon cloth (MoS2⊥CC) was confirmed to be the best morphology with maximum active edges exposed. Multifactors structure control resulted in abundant active-edges exposure and effective electron delivery, thus excellent HER activity. This three-dimensional cathode, MoS2⊥CC, can reach a great current density of 200 mA/cm(2) at a small overpotential of 205 mV. The preeminent HER performance can rival the best MoS2-based catalyst ever reported.

Ionic Liquid‐Intercalated Metallic MoS2 as a Superior Electrode for Energy Storage Applications

“…CC coated 1T‐MoS 2 acquires flake like morphology and uniformly wrapped onto the carbon fibers with exposure of the edges, whereas in the powder the flakes were aggregated to form flower like morphology. This suggests that carbon cloth is stabilizing the surface energy of the flakes which were growing during the reaction and hindering the aggregation of the sheets . The flake like morphology helps in the migration of ions into the electrode material which is advantageous for the electrochemical applications.…”

Carbon Cloth‐supported MoS2/Ag2S/Ag3PO4 Composite with High Photocatalytic Activity and Recyclability

“…[39] It is well known that powdery photocatalysts are always hard to be separated and recycled from suspension in practical application for wastewater treatment. [49][50][51][52] In this work, for the first time, we synthesized carbon cloth-supported MoS 2 /Ag 2 S/Ag 3 PO 4 composite (CCMS-AP) by a two-step method including a former hydrothermal reaction and a latter dipping treatment. Many attempts have been done to produce recoverable photocatalysts that can cope with difficulties of separation and recycle of fine photocatalyst particles from aqueous solution.…”

Morphology‐Controlled Synthesis of Molybdenum Disulfide Wrapped Single‐Walled Carbon Nanotubes for the Hydrogen Evolution Reaction

“…Both theoretical and experimental studies have proved that the nanometer‐scale exposed edges are active sites for the hydrogen evolution reaction (HER) . However, the dilemma lies in the fact that nanosized MoS 2 crystals are prone to stacking together through π–π interactions, which blocks a considerable amount of edge sites and leads to the inhibition of the catalytic reaction –. Moreover, as a semiconductor material with a large band gap, nanostructured MoS 2 exhibits poor inherent conductivity, which severely limits the overall HER activity .…”