摘要:
A dye-sensitized solar cell comprising a semiconductor electrode prepared by spraying a metal oxide nanoparticle dispersion on a conductive substrate using an electric field to form a metal oxide nanoball layer which is composed of agglomerated metal oxide nanoparticles and has a high porosity and specific surface area, exhibits improved photoelectric properties even when a gel or solid electrolyte is used.
摘要:
Disclosed are a graphene composite nanofiber and a preparation method thereof. The graphene composite nanofiber is produced by dispersing graphenes to at least one of a surface and inside of a polymer nanofiber or a carbon nanofiber having a diameter of 1˜1000 nm, and the graphenes include at least one type of monolayer graphenes, and multilayer graphenes having a thickness of 10 nm or less. The graphene composite nanofiber can be applied to various industrial fields, e.g., a light emitting display, a micro resonator, a transistor, a sensor, a transparent electrode, a fuel cell, a solar cell, a secondary cell, and a composite material, owing to a unique structure and property of graphene.
摘要:
The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m2/g (BET) and a d002 value of 0.36 nm or less, and a metal oxide thin layer formed on the carbon substrate. The electrode of the subject invention retains a high specific capacitance during high-speed charging and discharging cycles.
摘要:
An ultrafine fiber-based composite separator comprising a fibrous porous body which comprises ultrafine metal oxide/polymer composite fibers, or ultrafine metal oxide fibers and a polymer resin coating layer formed on the surface thereof, the ultrafine fibers being continuously randomly arranged and layered, and obtained by electrospinning a metal oxide precursor sol-gel solution or a mixture of a metal oxide precursor sol-gel solution and a polymer resin solution, wherein the surface of the metal oxide/polymer composite fibers has a uniform mixing composition of the metal oxide and the polymer resin, in which the separator has a heat shrinkage rate at 150˜250° C. of 10% or less and does not break down due to melting at a temperature of 200° C. or lower, has low heat shrinkage rate, and superior heat resistance and ionic conductivity, being capable of providing improved cycle and power properties when used in manufacturing a battery.
摘要:
The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m2/g (BET) and a d002 value of 0.36 nm or less, and a metal oxide thin layer formed on the carbon substrate. The electrode of the subject invention retains a high specific capacitance during high-speed charging and discharging cycles.
摘要:
Disclosed is a method for fabricating a carbon material, by which carbon fibers or carbon tubes, particularly branched carbon fibers or carbon tubes, are obtained via a so-called self-growing process without using external carbon sources. The carbon material obtained by the method has a large specific surface area and further includes a metal catalyst, and thus may be used in cell materials for a fuel cell or secondary battery, hydrogen storage devices, capacitors, solar cells, display panel or the like.
摘要:
Disclosed is a method for fabricating a carbon material, by which carbon fibers or carbon tubes, particularly branched carbon fibers or carbon tubes, are obtained via a so-called self-growing process without using external carbon sources. The carbon material obtained by the method has a large specific surface area and further includes a metal catalyst, and thus may be used in cell materials for a fuel cell or secondary battery, hydrogen storage devices, capacitors, solar cells, display panel or the like.
摘要:
The present invention relates to a white and color photoexcitation light emitting sheet comprising a substrate, a light source formed on the substrate, and a white and color photoexcitation light emitting layer capable of converting a light emitted from the light source into a light having a different wavelength, where the white and color photoexcitation light emitting layer is fabricated by mixing a matrix polymer, white and color photoexcitation light emitting materials and a solvent, spinning the resulting mixture to prepare an ultrafine composite fiber layer of the matrix polymer/photoexcitation light emitting materials, and thermocompressing the ultrafine composite fiber layer; and a method for fabrication thereof. The white and color photoexcitation light emitting sheet according to the present invention has uniform brightness and color coordinates and exhibits high color reproducibility.
摘要:
A porous conducting metal oxide electrode prepared by depositing a porous conducting metal oxide film containing a conducting metal oxide film layer having a network structure of nanofibers, containing nanograins or nanoparticles, on at least one surface of a current collector, and a conducting metal oxide coating layer on the network layer of the porous conducting metal oxide through a constant current method or a cyclic voltammetric method; and a high-speed charge/discharge and ultrahigh-capacity supercapacitor using the porous conducting metal oxide electrode are provided.
摘要:
The present invention relates to a white and color photoexcitation light emitting sheet comprising a substrate, a light source formed on the substrate, and a white and color photoexcitation light emitting layer capable of converting a light emitted from the light source into a light having a different wavelength, where the white and color photoexcitation light emitting layer is fabricated by mixing a matrix polymer, white and color photoexcitation light emitting materials and a solvent, spinning the resulting mixture to prepare an ultrafine composite fiber layer of the matrix polymer/photoexcitation light emitting materials, and thermocompressing the ultrafine composite fiber layer; and a method for fabrication thereof. The white and color photoexcitation light emitting sheet according to the present invention has uniform brightness and color coordinates and exhibits high color reproducibility.