Multi‐Interface‐Modulated CoS₂@MoS₂ Nanoarrays Derived by Predesigned Germanomolybdate Polymer Showing Ultrahighly Electrocatalytic Activity for Hydrogen Evolution Reaction in Wide pH Range

Abstract

state-of-the-art electrocatalysts for HER, but their potential utilization is significantly impeded because of the scarcity and high-price. [5,6] Thus, a promising avenue is to create non-noble electrocatalysts with high-efficiency, low-cost, and long-durability for boosting the HER. In recent years, the non-noble electrocatalysts, such as carbides, [7-10] nitrides, [11-15] oxides, [16-19] phosphides, [20-28] sulfides, [29-37] selenides, [38,39] and carbonbased materials [3,40] have been explored for HER to substitute Pt-group metals, and prominent achievements have achieved. Among these newly developed electrocatalysts, molybdenum disulfide (MoS 2) has attracted tremendous attention as one of promising nonprecious metal candidates for HER due to its unique grapheneshaped 2D structure, proper ΔG H* , low cost, and simple synthesis method. [29-34] However, MoS 2 has two main bottlenecks, including few

Recent progress in 2D hybrid heterostructures from transition metal dichalcogenides and organic layers: properties and applications in energy and optoelectronics fields

“…215 The approach of developing hybrid TMD–organic composites may present a breakthrough to achieve low-cost catalysts without compromising high current densities. 189,209,216–221 MoS 2 /PPy composites introduced by Wang et al exhibited an HER performance comparable to that of a Pt electrode (Fig. 19a).…”

Multi-interface MoS2/Ni3S4/Mo2S3 composite as an efficient electrocatalyst for hydrogen evolution reaction over a wide pH range

“…Furthermore, the two peaks at 25.9° and 43.4° are attributed to the peaks of CC. 24 Motivated by the aforementioned analyses, it is ascertained that MoS 2 , Ni 3 S 4 and Mo 2 S 3 are fortunately loaded on CC synchronously. The composite can be nominated as MoS 2 /Ni 3 S 4 /Mo 2 S 3 /CC.…”

“…22,23 As we know, reported MoS 2 -based composite electrodes are mostly unsteady over a wide pH range, especially, the activity of MoS 2 -based composites for the HER has still not been thoroughly explored in alkali electrolytes. More recently, quite a few efforts were made to explore MoS 2 -based composite electrocatalysts for the HER over a broad pH range, such as CoS 2 @MoS 2 @CC-30 h composite, 24 MoSe 2 -ts@MoS 2 -ts (thin sheets abbreviated to ts), 25 NbS 2 /MoS–carbon nanofiber, 26 PCN@MoS 2 @C (polypyrrole-derived carbon nanotube abbreviated to PCN), 27 CoS 2 @MoS 2 /CP (carbon paper abbreviated to CP), 28 CN/CNL/MoS 2 /CP (CoNi alloys abbreviated to CN and CoNi layered double hydroxides abbreviated to CNL), 29 MoS 2 /rGO/NiS nanocomposite (reduced graphene oxide abbreviated to rGO), 30 and Ru@2H–MoS 2 . 31 However, few MoS 2 -based composite electrocatalysts over a wide pH range are still far from satisfactory for practical applications of HER.…”

Nanohybridization of CoS2/MoS2 Heterostructure with Polyoxometalate on Functionalized Reduced Graphene Oxide for High‐Performance LIBs

“…[1][2][3][4] However, the sluggish lithium-ion transport caused by easy agglomeration [5] and the severe volume expansion by the conversion reaction with Li to form Li x MoS 2 [6] limit the application. To tackle the issues, three feasible strategies have been frequently employed: 1) incorporating them into highly conductive substrates to improve the conductivity and to reduce the aggregation, such as reduced graphene oxide (rGO), [7] carbon nanotubes, [8] and carbon cloths, [9] then further give rise to high performances. One of the more successful examples is the construction of CoS 2 /MoS 2 /rGO nanocomposite, which exhibited improved electrochemical performances in sodium-ion batteries [10] and others.…”