Ni0.85Co0.15WO4 nanosheet electrodes for supercapacitors with excellent electrical conductivity and capacitive performance

NiWO4 powders prepared via polymeric precursor method for application as ceramic luminescent pigments

“…When the radius is greater than or equals to 0.99 angstroms, it allows the formation of the Scheelite structure (Ca 2+ , Sr 2+ , Ba 2+ ) and for radius smaller than 0.77 angstroms, the Wolframite structure is formed, which is the case of NiWO 4 [10][11][12]. From a technological viewpoint, the versatility of these materials in terms of possible applications includes: light emitting diodes (LEDs) [8], electrodes [12], cathode material for supercapacitors [13], photoluminescent materials [14], and photocatalyst [15,16]. In particular, nickel tungstate, the material targeted in this study, is one of the potential candidates to be used as yellow inorganic luminescent pigment [17].…”

Bimetallic tungstate nanoparticle-decorated-lignin electrodes for flexible supercapacitors

“…The corrosion resistance and exceptional physiochemical properties of tungsten, combined with the nontoxic and stable multi-functional properties of the metal, make tungsten compounds an attractive choice. 21 Metal tungstates find applications in various fields, for instance, in optical fibers, photoluminescence, and microwave applications, which make them an integral part of the metal oxide family. 22 Metal tungstates with the empirical formula MWO 4 (M = Ni, Cu, Co, Mn) are particularly versatile and have found uses in Li-ion batteries and dielectric ceramics as well.…”

“…In one study, nanocomposites of NiWO 4 /CoWO 4 were synthesized which showed high capacitive performance. 21 Co 2+ was incorporated into the NiWO 4 lattice via a chemical co-precipitation method to manufacture monoclinic wolframite nanosheets of Ni 1Àx Co x WO 4 . In comparison to NiWO 4 , the surface area and the electrical conductivity of Ni 1Àx Co x WO 4 increased considerably.…”

“…Based on the results obtained so far, it is predicted that the performance can be boosted by mixed transition metal oxides (MTMOs). 21,37 Wang et al, in 2016, used this reasoning to synthesize a mesoporous NiWO 4 @CoWO 4 nanocomposite with different Co/Ni molar ratios using a chemical co-precipitation method. It was determined that the supercapacitor fabricated by using this composite exhibited a high energy storage density of 30.1 W h kg À1 and a higher power density of 200 W kg À1 .…”

Solvothermal synthesis of NiWO4 nanostructure and its application as a cathode material for asymmetric supercapacitors

“…Fig. 2a shows the XRD pattern of the typical NiWO 4 -12 sample, as seen, the XRD pattern comprises a series of 32,33 To be mentioned, the weak C 1s peak is presumably derived from the incompletely rinced ethylene glycol molecules. The XPS, along with that of the XRD results evidence the successful formation of NiWO 4 by solverthermal reaction.…”