12results about How to "Improve energy storage performance" patented technology

This invention discloses a method for preparing interface-reinforced niobium pentoxide / porous graphene and its energy storage application. The method involves adding porous graphene oxide during the solvothermal synthesis of a niobium pentoxide precursor to obtain a composite precursor of niobium pentoxide and porous graphene oxide. This precursor is then annealed under a protective atmosphere to obtain the interface-reinforced niobium pentoxide / porous graphene composite material. The composite material obtained by this invention exhibits excellent performance as an electrochemical energy storage material. Furthermore, the preparation method of this invention is simple to operate, requires no complex equipment, and is easily controlled, making it suitable for mass production.

This invention relates to a method for preparing a vanadium selenide / vanadium oxide heterojunction photo-assisted zinc-ion battery, belonging to the technical field of vanadium selenide / vanadium oxide heterojunction photo-assisted electrochemical energy storage and zinc-ion battery. The method includes the following steps: mixing a selenium source solution and a vanadium source solution to obtain a reaction precursor solution; subjecting the reaction precursor solution to a hydrothermal reaction and washing to obtain vanadium selenide material; annealing the vanadium selenide material to form a vanadium oxide layer on its surface, obtaining a vanadium selenide / vanadium oxide heterojunction composite material; mixing the vanadium selenide / vanadium oxide heterojunction composite material, a conductive agent, and a binder, adding a solvent to prepare a slurry, coating the slurry onto the surface of a current collector, and drying to obtain a photocathode. The material and its application system described in this invention exhibit good specific capacity, rate performance, and cycle stability, and demonstrate good energy storage performance under illumination conditions; this invention is beneficial for further reducing electrode polarization and promoting the synergistic enhancement of electron transport and zinc-ion storage.

This utility model discloses a real-time clock circuit and a Beidou receiver, relating to the field of electronic circuit technology. The disclosed real-time clock circuit includes an energy storage module and a timing module. The energy storage module includes at least one electrolytic capacitor, which has a porous anode substrate structure and a dielectric constant higher than a preset dielectric constant. The timing module is connected to both the electrolytic capacitor and a power supply. This utility model utilizes the electrolytic capacitor to store energy when connected to a power supply, receiving the output voltage from the power supply and outputting the stored energy voltage to the timing module when the power supply is disconnected. The porous anode substrate structure of the electrolytic capacitor, with a dielectric constant higher than a preset dielectric constant, enables the storage of more energy in a short time, ensuring longer time recording even after the Beidou receiver is powered off, thus providing a reliable time reference for the long-term operation of the Beidou receiver.

The application discloses a salt solution modified molecular sieve, a preparation method and application thereof, and belongs to the technical field of molecular sieves. The preparation method of the salt solution modified molecular sieve comprises the following steps: cation replacement, i.e., placing Na type molecular sieves in a first metal inorganic salt solution for replacement; sintering, i.e., calcining the replaced molecular sieves at a temperature of 400 DEG C or above; impregnation, i.e., mixing the sintered molecular sieves with a second metal inorganic salt solution for impregnation; separation and drying, i.e., separating and drying the impregnated molecular sieves to obtain the salt solution modified molecular sieves. The metal cations in the first metal inorganic salt solution and the second metal inorganic salt solution are at least one of Li + , Ca 2+ , Mg 2+ , Zn 2+ , Co 2+ , Al 3+ , Fe 2+ . The application has the effects of no liquid leakage during hydration / desorption reaction, significantly improved adsorption heat storage density and the like.

This invention relates to the field of new materials technology, and more particularly to a polyaniline conductive ink and its preparation method, as well as the application of this ink in flexible electronic devices, especially micro supercapacitors. A polyaniline conductive ink comprises, by weight, 10-30 parts of conductive filler; 18-30 parts of binder; 32-69 parts of solvent; and 3-8 parts of additives; wherein the conductive filler is composed of graphite, carbon black, and polyaniline. The polyaniline conductive ink of this invention solves the problem that existing conductive inks struggle to simultaneously achieve high conductivity, excellent mechanical flexibility, and high energy storage capacity.

This invention discloses a flexible high-energy-storage capacitor film, its preparation method, and its application, belonging to the field of dielectric thin-film capacitor preparation technology. The purpose of this invention is to solve the problem of low energy storage performance in existing capacitor films. The flexible high-energy-storage capacitor film is composed of an antiferroelectric layer material and a relaxation layer material; the antiferroelectric layer material is lead zirconate (PbZrO3, PZO), and the relaxation layer material is lead lanthanum zirconate titanate (Pb). 0.9 La 0.1 Zr 0.52 Ti 0.48 O3, PLZT); This invention studies the heat treatment temperature of antiferroelectric layer and relaxor layer materials, and further designs heterogeneous composite films with different stacking structures; This invention uses the sol-gel method to prepare heterogeneous composite films, introduces relaxor layer materials into antiferroelectric layer materials, reduces the leakage current density of capacitor films, and improves the energy storage performance of capacitor films.

The application belongs to the technical field of biomass green high-value utilization, and more particularly relates to a traditional Chinese medicine stem biomass charcoal as well as a preparation method and application thereof. The traditional Chinese medicine stem-based porous carbon material with a columnar network porous structure is prepared through low eutectic solvent impregnation reflux pretreatment, high-temperature carbonization, acid washing, filtration and drying. The preparation method provided by the application can not only control the specific surface area of the traditional Chinese medicine stem-based porous carbon, but also retain N and S heteroatoms in the traditional Chinese medicine stem, and can also regulate the pore structure of the traditional Chinese medicine stem-based porous carbon. The obtained traditional Chinese medicine stem-based porous carbon is suitable for being used as an adsorption material for adsorbing and separating pollutants in water bodies, soil and other environments, and can also store a large amount of charges to improve the energy storage property of the material and be used for preparing electrochemical devices. The overall preparation method is low-carbon and environmentally friendly, the obtained biomass charcoal has a high specific surface area, and has good commercial application value.

The application discloses a kind of double crystal phase microcrystalline glass materials and preparation method and application, belong to luminescent material technical field.The double crystal phase microcrystalline glass material includes Ca2Al2SiO7:Eu 2+ And CaAl2Si2O8:Eu 2+ Double crystal phase;The glass matrix of the double crystal phase microcrystalline glass material includes the following components: SiO2, Al2O3, CaO, Eu2O3.The double crystal phase in the double crystal phase microcrystalline glass material of the application is activated ion Eu 2+ Multiple doping sites are provided, so that the photoluminescence color and long afterglow light color can be realized from blue light to wide yellow light adjustable tuning;The thermal release peak of the double crystal phase microcrystalline glass material is wide and extends to high temperature 650K, and the defect energy level of the surface is very deep and the defect energy level energy storage performance is good.The double crystal phase microcrystalline glass material of the application provides technical support for high temperature scene warning sign and night vision lighting field.

The application discloses A and B site doped BaTiO3-based dielectric ceramic, characterized in that the chemical formula of the A and B site doped BaTiO3-based dielectric ceramic is (Ba x1 Ca x2 Sr 1‑x1‑x2 )(Ti 0.4 La 0.2 Ce 0.2 Ta 0.2 )O3, 0≤x1≤1, 0≤x2≤1, and x1+x2≤1. The application also discloses a preparation method thereof. The application introduces other elements into A and B of the barium titanate ceramic dielectric material, improves the high-temperature stability and energy storage performance, and overcomes the defects of poor temperature stability and low energy storage efficiency of the existing barium titanate ceramic dielectric material.

A calcium titanate-based dielectric material with high energy storage performance was designed. The chemical formula of this material is Ca. 1‑x Dy x (Ti 1‑y Hf y ) 1‑x / 4 O3-z mol%M, where x=0.005~0.05, y=0.1~0.2, z=0~2, and M is MnO2 or BaCu(B2O5). It is prepared using solid-state reaction and tape casting methods. This invention, based on calcium titanate-based ceramics with high breakdown field strength, employs a series of strategies to improve energy storage performance, including element substitution, doping with sintering aids, and process improvement: partial substitution of Hf elements at the B site increases the band gap; doping with sintering aids improves grain density, both of which enhance the breakdown field strength; the addition of rare earth element Dy enhances the polarization response by introducing defect dipoles; the non-stoichiometric design reduces oxygen vacancy compensation, thereby increasing resistivity; and the tape casting method improves ceramic density and grain uniformity. The final prepared calcium titanate-based energy storage medium ceramic material exhibits good energy storage performance, with Ca... 0.995 Dy 0.005 (Ti 0.9 Hf 0.1 ) 0.99875 The best energy storage performance was achieved in O3-0.5 mol% BaCu(B2O5) ceramics, with a breakdown field strength of 101.90 kV / mm and an effective energy storage density of 10.22 J / cm³. 3 .

The application discloses a kind of wisdom park hybrid power energy storage devices, comprising: cabinet;Shell, the shell is located in the cabinet and inside and is placed with energy storage module;Control module, the control module is set above the energy storage module, and the control module is equipped with the joint of electrical connection with the energy storage module;Transmission interface, set on the cabinet, for the input and output of electric energy;Connecting line, is arranged in the cabinet, and one end of the connecting line is connected on the transmission interface, and the other end is electrically connected with the control module.The device is simple in structure, and the integration is high.

This invention relates to the field of building energy-saving materials technology, specifically to an aerogel thermal insulation and energy storage material and its preparation method. The material comprises: 5-30 wt% silica aerogel, 30-65 wt% modified expanded perlite, 10-30 wt% phenolic resin, and 20-50 wt% phase change material; and has a three-layer gradient composite structure from the outside to the inside: a surface aerogel thermal insulation layer, an intermediate interface transition layer, and a core energy storage and thermal insulation layer; the modified expanded perlite is surface-modified with γ-aminopropyltriethoxysilane, with an amino grafting amount of 0.5-1.5 mmol / g. This invention solves the interfacial compatibility and phase change leakage problems through APTES chemical bridging modification, and achieves synergistic optimization of thermal insulation and energy storage by combining the three-layer gradient structure. The material has low thermal conductivity, high energy storage density, good cycle stability, and low cost, making it suitable for large-scale applications.