Abstract: A nanocomposite electrode and supercapacitor thereof are disclosed. The nanocomposite electrode includes a substrate, at least one binding compound, at least one carbonaceous compound, and vanadium doped spinel ferrite nanoparticles (V-SFNPs). The V-SFNPs have a formula of CoxNi1-xVyFe2-yOz, wherein x=0.1-0.9, y=0.01-0.10, and z=3-5. The substrate is at least partially coated on a first side with a mixture comprising the V-SFNPs, the at least one binding compound, and the at least one carbonaceous compound. Two of the nanocomposite electrodes are combined to form the supercapacitor.

Abstract: A flexible energy storage device with a redox-active polymer hydrogel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the redox-active polymer hydrogel electrolyte. The redox-active polymer hydrogel electrolyte can include a polymer hydrogel, charge balancing anions and redox-active transition metal cations at least one selected from the group consisting of vanadium, chromium, manganese, cobalt, and copper. The flexible energy storage device may retain greater than 75% of an unbent specific capacitance when bent at an angle of 10° to 170°.

Abstract: A supercapacitor including a gel electrode and two electrodes is described. Each of the two electrodes include a second mixture of 5-10 wt. % conductive additive, 5-10 wt. % binding compound, and 80-90 wt. % activated carbon. Further, the second mixture is at least partially coated on an inner surface of a substrate, and where the inner surfaces of the two electrodes are separated by and in physical contact with the gel electrolyte to form the supercapacitor. The gel electrolyte includes a polyol compound, a base with a molarity (M) of 1-5 in the polyol compound, and 1-10 wt. % of boric acid relative to the weight of the polyol compound. The boric acid intercalates with a first mixture of the polyol compound and the base, creating a gel.

Abstract: A flexible energy storage device with a glycerol-based gel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the gel electrolyte. The electrolytes can be in gel form, bendable and stretchable in a device. The gel electrolyte can include glycerol, redox-active molybdenum-containing ions, and a secondary ionic substance. The secondary ionic substance can include a salt. The gel electrolyte can have a density of 1.4 to 1.9 g/cm3 and an ionic conductivity of 2.3×10?4 to 3.2×10?4 Scm?1. The flexible energy storage device may retain greater than 95% of an unbent energy storage capacity when bent at an angle of 10 to 170°.

Abstract: A nanocomposite electrode and supercapacitor thereof are disclosed. The nanocomposite electrode includes a substrate, at least one binding compound, at least one carbonaceous compound, and vanadium doped spinel ferrite nanoparticles (V-SFNPs). The V-SFNPs have a formula of CoxNi1-xVyFe2-yOz, wherein x=0.1-0.9, y=0.01-0.10, and z=3-5. The substrate is at least partially coated on a first side with a mixture comprising the V-SFNPs, the at least one binding compound, and the at least one carbonaceous compound. Two of the nanocomposite electrodes are combined to form the supercapacitor.

Abstract: A nanocomposite electrode and a method of making the nanocomposite. The nanocomposite electrode includes an electrode substrate, nitrogen-doped molybdenum carbide nanosheets, at least one electrolyte, at least one binding compound, and at least one conductive additive. The electrode substrate is coated with a mixture of the nitrogen-doped molybdenum carbide nanosheets, at least one binding compound, at least one conductive additive, and at least one electrolyte, where the electrolyte penetrates the pores of the nitrogen-doped molybdenum carbide nanosheets, and where the nitrogen-doped molybdenum carbide nanosheets are an outer layer of the electrode.

Abstract: A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.

Abstract: A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO/Fe2VO4 nanoparticles. The NiO/Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO/Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO/Fe2VO4 nanoparticles is described.

Abstract: A bio-electrochemical fuel cell is provided. The fuel cell includes an anode placed between a second endplate and a supporting plate, a cathode placed between a first endplate and the supporting plate, a separator plate provided between the first endplate and the cathode, a separator plate provided between the second endplate and the anode, and at least one separator plate provided on each side of the supporting plate. The anode has a first layer and a biofilm including photosynthetic microorganisms is present on a surface of the first layer. A central aperture of the first endplate receives a flow of water containing the photosynthetic microorganisms and a central aperture of the second endplate discharges the flow of water. Application of light to the fuel cell assembly causes the photosynthetic microorganisms to release oxygen at the anode and induces a photo-current in the anode.

Abstract: A nanocomposite sorbent which contains molybdenum carbide, molybdenum nitride, and molybdenum oxide. The nanocomposite sorbent is in the form of nanosheets having a mean size of 10 to 100 ?m and a mean thickness of 10 to 1000 nm. A method of forming the nanocomposite sorbent is also provided. The nanocomposite sorbent is used to form a membrane filter with a fluorinated polymer. The nanocomposite sorbent and membrane filter are each used in a method of removing an organic pollutant from water.

Abstract: A flexible energy storage device with a glycerol-based gel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the gel electrolyte. The electrolytes can be in gel form, bendable and stretchable in a device. The gel electrolyte can include glycerol, redox-active molybdenum-containing ions, and a secondary ionic substance. The secondary ionic substance can include a salt. The gel electrolyte can have a density of 1.4 to 1.9 g/cm3 and an ionic conductivity of 2.3×10?4 to 3.2×10?4 Scm?1. The flexible energy storage device may retain greater than 95% of an unbent energy storage capacity when bent at an angle of 10 to 170°.

Abstract: A flexible energy storage device with a redox-active biopolymer organogel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the redox-active biopolymer organogel electrolyte. The redox-active biopolymer organogel electrolyte can include a biopolymer organogel, redox-active molybdenum-containing ions, and a secondary ionic substance. The flexible energy storage device may retain greater than 75% of an unbent specific capacitance when bent at an angle of 10° to 170°.

Abstract: A composite is provided which comprises planar molybdenum oxide microstructures and cobalt oxyhydroxide microstructures disposed on the planar molybdenum oxide microstructures. A method of forming the composite is also provided. The composite is used in the fabrication of an electrochemical sensor, which comprises the composite, an electrode, and a polymeric coating. The electrochemical sensor is used in a method of detecting the presence of glucose in an analyte. The method involves applying a voltage to the electrochemical sensor relative to a counter electrode and measuring a current response. The method in insensitive to common oxidative interfering analytes such as urea, lactate, and NaCl.

Abstract: A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.

Abstract: A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO/Fe2VO4 nanoparticles. The NiO/Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO/Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO/Fe2VO4 nanoparticles is described.

Abstract: A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.

Abstract: A bio-electrochemical fuel cell is provided. The fuel cell includes an anode placed between a second endplate and a supporting plate, a cathode placed between a first endplate and the supporting plate, a separator plate provided between the first endplate and the cathode, a separator plate provided between the second endplate and the anode, and at least one separator plate provided on each side of the supporting plate. The anode has a first layer and a biofilm including photosynthetic microorganisms is present on a surface of the first layer. A central aperture of the first endplate receives a flow of water containing the photosynthetic microorganisms and a central aperture of the second endplate discharges the flow of water. Application of light to the fuel cell assembly causes the photosynthetic microorganisms to release oxygen at the anode and induces a photo-current in the anode.

Abstract: A nanocomposite electrode including a substrate, a binding compound, a conductive additive, and NiO/Fe2VO4 nanoparticles. The NiO/Fe2VO4 nanoparticles have a substantially spherical shape. A mixture of the binding compound, the conductive additive and the NiO/Fe2VO4 nanoparticles, is at least partially coated on a first surface of the substrate. A method of making the NiO/Fe2VO4 nanoparticles is described.

Abstract: A flexible energy storage device with a redox-active biopolymer organogel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the redox-active biopolymer organogel electrolyte. The redox-active biopolymer organogel electrolyte can include a biopolymer organogel, redox-active molybdenum-containing ions, and a secondary ionic substance. The flexible energy storage device may retain greater than 75% of an unbent specific capacitance when bent at an angle of 10° to 170°.

Abstract: A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.