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One promising avenue for accelerating the clean energy revolution is the application of Transition Metal Dichalcogenide (TMD) catalysts.

Molybdenum disulfide (MoS2) has become a promising low-cost alternative to Pt catalyst for electrochemical Hydrogen evolution reactions (HER). However, the poor conductivity and limited active sites of thermodynamically stable 2H-Phase MoS2 hinder its catalytic performance. Utilizing phase engineering to convert 2H MoS2 to metallic 1 T MoS2 is an effective strategy to improve the catalytic activity of MoS2. The commonly used synthetic and phase engineering methods such as electrochemical exfoliation involve using a complicated synthesis route or under strict experimental conditions or both. He...

Abstract Sulfides are promising anode candidates because of their relatively large theoretical discharge/charge specific capacity and pretty small volume changes, but suffers from sluggish kinetics and structural instability upon cycling. Phase engineering can be designed to overcome the weakness of the electrochemical performance of sulfide anodes. By choosing nickel sulfides (α-NiS, β-NiS, and NiS ) supported by reduced graphene oxide (rGO) as model systems, it is demonstrated that the nickel sulfides with different crystal structures show different performances in both sodium-ion and pot...