Metal chalcogenides have attracted significant attention due to their excellent physical and chemical properties. Until now, numerous efforts have been devoted to the synthesis of metal chalcogenides and their potential applications in many research f...
Metal chalcogenides have attracted significant attention due to their excellent physical and chemical properties. Until now, numerous efforts have been devoted to the synthesis of metal chalcogenides and their potential applications in many research fields, such as energy storage and conversion devices, (opto)electronics, etc. However, the performances of metal chalcogenides-based devices such as electrochemical capacitance of supercapacitors (SCs), hydrogen evolution reaction (HER) activity of electrocatalysts, or mobility of thin-film transistors (TFTs) need further improvement.
Metal sulfides such as CoS, MnS, NiS, etc, have been proven excellent candidates for energy storage and conversion devices because of their good conductivity and chemical stability. Compared with single metal sulfides, bi-metal sulfides-based electrodes show the enhanced electrochemical capacitance for SCs because of the synergetic effect of bi-metal. Taking the advantages of cobalt ion, manganese ion, and nanoparticles (NPs) morphology, I synthesized manganese cobalt sulfide NPs by a hydrothermal method and explored the electrochemical performance. Otherwise, to enhance the catalytic behavior of NiS, I used a cost-effective method to synthesize NiS nanorods (NRs)/graphene (Gr) heterostructure on a three-dimensional (3D) substrate that can offer more surface active sites and improve the structural stability. As a result, the synthesized NiS NRs/Gr presented superior catalytic activity and cycling stability in both acidic and alkaline media.
Metal tellurides are considered promising candidates for energy storage and conversion systems because of their superior metallic conductivity. However, the construction of metal tellurides as a bifunctional material for SCs and HER electrocatalysts remains challenging. As reported recently, materials with hollow structures show more advantages for energy storage and conversion systems because the unique morphology can boost the carrier charge transfer. Hence, I attempted to synthesize the hollow nickel telluride (NiTe2) with a simple strategy and employed it as a bifunctional material for SCs and HER.
Nowadays, developing high-performance TFTs based on metal tellurides is a hot research topic. However, the poor electric performance of metal tellurides-based TFTs limited their commercial application. Based on the recent reports, long nanowire shows great potential in optimizing the electric property, because of the large length-to-diameter aspect ratio, high transmittance, good conductivity and excellent mechanical compliancy. Hence, I used a facile method to fabricate high-quality and uniform tellurium (Te) and metal tellurides nanowires and further investigated their electric performance for TFTs.