The novel and facile preparation of multilayer MoS₂ crystals by a chelation-assisted sol–gel method and their electrochemical performance

Abstract

Multilayer molybdenum disulfide was prepared by a chelation-assisted sol–gel method with ammonium molybdate tetrahydrate, thioacetamide and diethylenetriamine pentaacetic acid (Dtpa), followed by calcination.

3D printing battery by using cellulose nanofiber as rheology modifier and carbon resource

“…In the following sweeps, there was no obvious peaks in sweeping cycles. All recorded peaks in this research are in accordance with previous reports [31]…”

“…The depressed semicircle in high frequency region was corresponded to the charge transfer resistance Rct, while the sloping line at low frequency region indicated Warburg impedance Zw of long range lithium ion diffusion. According to previous reports [31] [29] [33] , the intercept in high frequency region presented the resistance of electrolyte Re; CPE is a constant phase element of the electrode/electrolyte interface; the high frequency semicircle was attributed to the resistance Rf and CPE1 of SEI film; the medium frequency semicircle was corresponded to the charge resistance Rct and CPE2 of the electrode/electrolyte interface. Fig.…”

“…LFP is mixed with viscosity CNF and printed a comb structure as battery cathode. While as-MoS2 gel is prepared to 3D printing anode electrode according to Guo et al [31] Though as-MoS2 gel can provide enough viscosity to hold 3D printing structure very well, CNF is added in as-MoS2 because CNF can provide carbon source for electric conductivity and also bind 3D printed material without smashing. The as-MoS2 gel sample should be transferred to 2H-MoS2 under thermal annealed.…”

“…CNF/as-MoS2 gel was prepared following the method described by Guo et al [31] Three precursors were used to form as-MoS2 gel: ammonium molybdate tetrahydrate ((NH4)6Mo7O24·4H2O, Sigma-Aldrich, USA), thioacetamide (CH3CSNH2, Sigma-Aldrich, USA), and diethylenetriamine pentaacetic acid (Dtpa, Sigma-Aldrich, USA). At first, 0.2g (NH4)6Mo7O24·4H2O was dissolved in 6mL of DI water.…”

Reverse micelle assisted hydrothermal reaction route for the synthesis of homogenous MoS2 nanospheres

“…MoS 2 nanostructures of various shapes such as 2D sheets [7], nanoparticles (NP) [8], nanospheres (NS) [9], nanorods [10], nanoflowers [11], and quantum dots [12] are gaining attention over the past decade and are prepared by methods such as exfoliation [13], chemical vapor deposition(CVD) [14], hydrothermal/solvothermal methods [15], gas-phase synthesis [16], sol-gel methods [17] etc. The synthesis of MoS 2 NS is generally carried out using hydro/solvothermal methods at high temperatures using various precursors in the presence of a reducing agent, for e.g.…”