5results about How to "Increased charge storage capacity" patented technology

The present disclosure relates to a complex-phase ceramic and a preparation method and application thereof, the electrical performance of the ceramic single crystal boundary is improved by introducing yttrium element and complex phase, and then the electrical performance of the entire ceramic system is improved; the prepared yttrium element doped calcium copper titanate and strontium copper titanate complex phase ceramic system has excellent breakdown field strength and giant dielectric performance, and can improve the performance of capacitor energy storage elements, memory functional devices, multilayer ceramic capacitors and other functional devices.

The application discloses a kind of high specific capacity electrode foil and its production process, belong to aluminum electrolytic capacitor technical field, by carbon-coated aluminum powder obtained by glucose pyrolysis coating, using sol-gel-hydrothermal method to synthesize dielectric nanosphere powder, again through sol-precipitation method to generate dielectric nanosphere as the core of composite dielectric core-shell nanosphere powder, again using manganese metal organic framework deposition on the surface of composite dielectric core-shell nanosphere powder and calcination, get sheet manganese oxide coated high dielectric nanosphere, through sheet manganese oxide, core-shell nanosphere and carbon layer on the surface of carbon-coated aluminum powder three synergistic slip, to give electrode foil flexibility, can meet the needs of winding in processing and capacitor assembly;When calcining, manganese ions will enter the lattice of composite dielectric core-shell nanosphere to replace titanium ions, produce negative center, so that dielectric constant increases, improve the charge storage capacity of capacitor, and produce oxygen vacancy, reduce dielectric loss, improve the overall performance of capacitor.

This invention discloses the preparation and application of a porous bismuth ferrite material. The preparation method includes the following steps: dissolving bismuth and iron salts in an acid solution to obtain a metal solution; adding a complexing agent and a pore-forming agent to the metal solution and mixing to obtain a precursor solution; heating the precursor solution to obtain a wet gel; drying the wet gel to obtain a dry gel; and calcining the dry gel under an inert atmosphere containing 6-10% oxygen to obtain the porous bismuth ferrite material. The porous bismuth ferrite electrode material of this invention not only solves the structural defects of traditional porous bismuth ferrite materials, such as small pore volume and insufficient utilization of active sites, but also fully utilizes its membrane capacitance characteristics and bimetallic synergistic effect, showing excellent application prospects in the field of capacitive deionization and chlorine removal.

The application relates to the technical field of electrode materials, in particular to a nickel-cobalt-aluminum hydroxide as well as a preparation method and application thereof. The preparation method provided by the application comprises the following steps: mixing a soluble nickel source, a soluble cobalt source, a soluble aluminum source, oxalic acid and water, and then performing a hydrothermal reaction to obtain a nickel-cobalt-aluminum oxalate compound precursor with a sheet-shaped self-assembled spherical structure; mixing the nickel-cobalt-aluminum oxalate compound precursor with the sheet-shaped self-assembled spherical structure, water and sodium hydroxide to obtain the nickel-cobalt-aluminum hydroxide. The nickel-cobalt-aluminum hydroxide prepared by the preparation method has excellent electrochemical performance.

The invention discloses carbon composite copper vanadate as well as a preparation method and application thereof, and belongs to the technical field of functional materials. The carbon composite copper vanadate is composed of amorphous carbon and monoclinic Cu < 2. 33 > V < 4 > O < 11 >; the amorphous carbon is carbon of irregular particles with a micron size; the monoclinic Cu2. 33V4O11 is a copper vanadate spherical particle with a micron size. The preparation method of the carbon composite copper vanadate comprises the following steps: putting rice husks or chicken manure into a tubular furnace, carrying out calcination reaction in an argon atmosphere, and cooling to obtain black rice husk carbon or chicken manure carbon; rice hull carbon or chicken manure carbon, sodium vanadate, cupric acetate and sodium chloride are fully mixed, then the mixture is put into a crucible, then the crucible is put into a vacuum furnace, heat preservation reaction is conducted in the argon atmosphere, and the carbon composite copper vanadate is obtained. The two-step preparation process is adopted, the preparation process is easy to control, and cyclic utilization of the rice husks and the chicken manure is achieved. The prepared carbon composite copper vanadate is used as an electrode material and has a good application prospect in the field of supercapacitors.