55results about How to "Improve energy storage performance" patented technology

The invention discloses a preparation method of a polypropylene coarsened film, belongs to the technical field of preparation of electronic and electrical insulating materials, and particularly relates to preparation of the polypropylene coarsened film. The invention aims to solve the technical problem that the specific preparation process is difficult to regulate and control when the polypropylene coarsened film is prepared at present. By adjusting the heating temperature, the torque, the rotating speed of the motor, the gap between the die head and the machine lip, the temperature of the chilling roller, the casting rotating speed and the winding tension of each area of the extruder, the polypropylene coarsening film which is reasonable in surface appearance and thickness and excellent in dielectric property is obtained, the wettability of the obtained polypropylene coarsening film in insulating oil is good, the dielectric property is excellent, and the service life of the polypropylene coarsening film is prolonged. And the prepared oil-immersed capacitor has good energy storage performance. The polypropylene coarsened film prepared by the invention is mainly used for preparing metallized polypropylene films for oil-immersed capacitors and film capacitors.

The invention relates to the technical field of dielectric materials, in particular to a diamine monomer crosslinking modified fluorine-containing ferroelectric polymer, a preparation method and a device. The diamine monomer cross-linked modified fluorine-containing ferroelectric polymer comprises the following components: a semi-crystalline thermoplastic fluorine-containing ferroelectric polymer and a diamine cross-linking agent, the semi-crystalline thermoplastic fluorine-containing ferroelectric polymer is polyvinylidene fluoride with ferroelectricity and a copolymer derivative thereof; the diamine cross-linking agent is short-chain diamine containing a rigid structure; the mass fraction of the diamine cross-linking agent is 0.25%-10% compared with the total mass fraction. The thin film prepared by the invention meets the application requirements of improvement of dielectric constant, reduction of dielectric loss, reduction of leakage current, improvement of breakdown field strength and the like in a high electric field.

The invention discloses a preparation method and application of a bifunctional acrylate monomer modified polypropylene coarsening film for an extremely cold-resistant oil-immersed capacitor, and belongs to the technical field of manufacturing of electronic and electrical insulating materials. The invention relates to application of a bifunctional acrylate monomer modified polypropylene coarsened film in an extremely cold resistant oil-immersed capacitor or a thin film capacitor. The preparation method comprises the following steps: (1) respectively adding a polypropylene coarsened film, a monomer, an interface agent, a co-monomer, an initiator and deionized water in certain parts by weight into a reactor, and heating for swelling; (2) heating the reaction system to a certain temperature, and carrying out grafting reaction; and (3) washing, extracting and drying. According to the invention, the bifunctional acrylate is used as a monomer to carry out long-chain branching modification on the polypropylene coarsened film, so that the problem of poor performance of a capacitor in an extreme environment caused by low-temperature embrittlement and high-temperature insulation deterioration of the polypropylene coarsened film is solved. The method has the advantages of good effect, environmental protection, simple process, low cost and the like.

The invention discloses a lead-free energy storage ceramic laminated material, and belongs to the technical field of dielectric energy storage. The lead-free energy storage ceramic laminated material is formed by sequentially laminating lead-free energy storage ceramic with a texture structure and lead-free energy storage ceramic with a non-texture structure, and preferably, the material comprises at least three layers; when the lead-free energy storage ceramic with the texture structure is positioned on the middle layer, the lead-free energy storage ceramic with the non-texture structure is positioned on the two sides of the middle layer; when the lead-free energy storage ceramic with the non-texture structure is located on the middle layer, the lead-free energy storage ceramic with the texture structure is located on the two sides of the middle layer. Based on the structural design of at least three layers, the non-textured ceramic is selected as the high-voltage-resistant layer, the textured ceramic is selected as the high-polarization layer, the lead-free ceramic laminated material with excellent energy storage performance is obtained, and the lead-free ceramic laminated material has wide application prospects in the fields of power electronics and pulse power.

The invention belongs to the technical field of battery negative electrode materials, and particularly relates to a phosphorus-based negative electrode material with a coating structure as well as a preparation method and application of the phosphorus-based negative electrode material. On the basis of the prior art, nano nickel phosphide, red phosphorus and carbon nanospheres are subjected to ball milling to prepare a main body phosphorus-based material, and then the main body phosphorus-based material is coated with a coating layer prepared from a nanofiber material, pyrrole and 5-azaindole, so that the coating layer of the phosphorus-based negative electrode material has elasticity, the volume expansion rate of the phosphorus negative electrode material is reduced, and the service life of the phosphorus negative electrode material is prolonged. According to the nickel phosphide-based negative electrode material and the preparation method thereof, the interface interaction between the phosphorus-based negative electrode material and the binder is enhanced, the prepared nickel phosphide grows on the black phosphorus nanosheet, so that the nickel phosphide has good dispersity, the nickel phosphide nanocrystals can be effectively prevented from being agglomerated, and the energy storage capacity of the nickel phosphide is improved; and after the 5-hydroxy vanillin is grafted, the adhesive has excellent wet adhesion resistance, and can prevent the dissolution of phosphorus element, so that the cycle efficiency of the electrode is improved.

The invention discloses a preparation method and application of a water-based flexible electrode capable of being used for loading a large-molecular-weight active material, and aims to solve the problem that the water-based flexible electrode prepared by the existing method is difficult to load the large-molecular-weight active material. The method comprises the following steps: preparing Ti < 3 > C < 2 > T < x > MXene; preparing a high-molecular-weight active material; preparing a sensitized large-molecular-weight active material; preparing a composite material of Ti < 3 > C < 2 > T < x > MXene and a high-molecular-weight active material; preparing bacterial cellulose dispersion liquid; and preparing the water-based flexible electrode. The method is applied to the water-based flexible sodium ion battery and the like. The preparation method is simple, the prepared flexible substrate has high hydrophilicity, high mechanical property and a good conductive network, and the prepared flexible electrode has good electrochemical performance and high mechanical property. The invention belongs to the technical field of energy storage materials.

The invention relates to a high-entropy ceramic capacitor, a ceramic dielectric material for the high-entropy ceramic capacitor and a preparation method, the raw material composition of the ceramic dielectric material comprises NaNbO3, (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, by controlling the raw material ratio and preparation process parameters of sodium niobate and adopting a multi-step grinding synthesis method, NaNbO3-based high-entropy ceramic is designed, so that the insulation resistance of the high-entropy ceramic capacitor is effectively improved; on the other hand, chemical modification treatment is carried out by introducing (Na0. 2Bi0. 2Ba0. 2Mg0. 2Zn0. 2) TiO3, H3BO3, CaZrO3 and the like, so that the structural stability of an antiferroelectric phase is enhanced, the compactness of the material is improved, and finally, the energy storage performance of the material is optimized and improved.

This utility model provides a composite perforated wood-plastic composite sound-absorbing wall panel, relating to the technical field of building materials. The composite perforated wood-plastic composite sound-absorbing wall panel comprises, from top to bottom, a veneer layer, a wood-plastic composite layer, and a sound-absorbing layer. The veneer layer has evenly distributed through-holes, and the wood-plastic composite layer has sound-absorbing grooves. The through-holes and sound-absorbing grooves are interconnected, and the sound-absorbing grooves are dovetail grooves. The total thickness of the wall panel is ≤19mm. This utility model achieves a significant improvement in the sound absorption performance of the composite wall panel by designing through-holes in the veneer layer, designing sound-absorbing grooves communicating with the through-holes in the wood-plastic composite layer (designing the sound-absorbing grooves in the dovetail groove form), and then designing a sound-absorbing layer on the bottom surface of the wood-plastic composite layer. The sound absorption principle of this utility model is: using the Helmholtz resonance principle, combined with the oblique wall reflection of the dovetail groove and the excellent sound absorption performance of the wood-plastic composite material itself, to achieve a synergistic effect and significantly improve the sound absorption performance of the composite wall panel.

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.

The application discloses a preparation method of defect-induced synthesis of porous carbon nanocomposites and application thereof in supercapacitors. The method uses DHPC as a carbon base to anchor Mn3O4. A large number of intrinsic defects on the surface of the DHPC optimize the local electron density distribution and surface performance, accelerate ion kinetics, provide abundant nucleation sites, and enhance the binding activity with Mn3O4. The microwave-assisted synthesis technology is used to realize the uniform dispersion of Mn3O4 nanoparticles on the DHPC, forming a three-dimensional porous network structure. The structure not only improves the conductivity of Mn3O4, but also promotes the rapid diffusion of electrolyte ions and electron transmission, simultaneously relieves the stress damage in the charging and discharging process, and significantly improves the electrochemical performance and cycle stability of the material. Compared with the prior art, the preparation method has the advantages of simple operation, low cost, environmental friendliness and the like.

The invention relates to the technical field of new energy zinc-vanadium battery materials, in particular to a preparation method and application of an electrode material for a low-temperature zinc ion battery. The method comprises the following steps: mixing cobalt acetylacetonate, water and furfural, and sequentially carrying out heat treatment and centrifugation to obtain a precipitate; mixing the precipitate with a potassium hydroxide solution, and calcining for the first time to obtain a calcined material; mixing the calcined material with ammonium metavanadate and water, and sequentially carrying out hydrothermal treatment and drying to obtain a dried material; and calcining the dried material for the second time to obtain the electrode material. The V2O5 / nano flower-shaped porous carbon-based zinc ion cathode material is prepared by adopting a coupling strategy and shows relatively good cycling stability in a zinc ion battery, and more channels exist on the surface of the carbon material, so that rapid diffusion of zinc ions is promoted, the conductivity and the ionic conductivity are improved, and application at low temperature is realized.

The application discloses an iron-based barium sodium niobate ceramic material with high energy storage performance and a preparation method thereof. 4‑2x Sm 2x Na2Fe x Nb 10‑x O 30 , wherein 1<=x<=1.25. Barium carbonate, samarium oxide, sodium carbonate, ferrous oxide and niobium pentoxide are used as raw materials, and a standard solid-phase method is adopted to sinter the iron-based barium sodium niobate ceramic material. In the product formula, iron is used to replace niobium in the barium sodium niobate, which is lead-free, environment-friendly, rich in iron reserves and low in price, and is beneficial to control the cost of raw materials. In addition, the iron replacement is beneficial to enhance the relaxor ferroelectric performance of the material, can obtain a more slender hysteresis loop, and improves the energy storage efficiency of the material. The prepared ceramic material has few pores and cracks, high density, and the microstructure is obviously improved, the grain size is more fine and uniform, the ferroelectric polarization intensity and the breakdown field strength are significantly improved, the problem that the barium sodium niobate material is difficult to sinter is solved, and the ferroelectric performance and the energy storage performance are significantly improved.

The utility model relates to the technical field of connectors, in particular to a charging connector for energy storage, which comprises a plug-in port, a plug-in structure and a plug-in shell sleeve, the plug-in port is provided with a plug-in cavity, the plug-in cavity is provided with a plug-in terminal, the plug-in port is provided with a fastener, the plug-in structure is provided with a plug-in cavity, and the plug-in cavity is provided with a plug-in terminal. The plug-in cavity is provided with a plug-in terminal, the plug-in port is provided with a locking piece, the locking piece is locked on the buckling piece, so that the plug-in terminal is plugged into the plug-in terminal, the plug-in terminal is provided with a plug-in hole in the plug-in terminal, the plug-in terminal can be plugged into the plug-in hole, and the plug-in terminal and the plug-in terminal are terminals of different models. The energy storage capability of the terminal is enhanced through the terminals of different models, the plugging conductive stability of the terminal is improved, the end is arranged to be an inclined plane, the contact surface of the terminal is increased through the inclined plane, the plugging precision of the terminal is improved, the practicability is high, and the terminal has a good application prospect.

The present invention discloses a natural gas power generation system and method combined with liquefied air energy storage, wherein the natural gas power generation system includes an air liquefaction subsystem, a liquefied air gasification subsystem, an LNG gasification subsystem, a gas turbine subsystem, a waste heat utilization subsystem and a carbon dioxide capture subsystem; the air liquefaction subsystem produces liquefied air; the liquefied air gasification subsystem uses liquefied air to generate electricity; the LNG gasification subsystem uses LNG cold energy for the air liquefaction subsystem and the carbon dioxide capture subsystem to gasify LNG into natural gas; the gas turbine subsystem uses part of the natural gas of the LNG gasification subsystem as fuel for power generation; the waste heat utilization subsystem uses the waste heat of flue gas for power generation; the carbon dioxide capture subsystem is coupled with the LNG gasification subsystem to condense and capture carbon dioxide in the flue gas. The present invention can solve the defects of large energy loss and low efficiency in the prior art and reduce greenhouse gas emissions.

The utility model provides a high energy storage inductor which comprises a framework, a coil winding, two groups of magnetic cores, a first insulating layer, a second insulating layer and two insulating plastic covers, the framework comprises an upper baffle, a middle column ring and a lower baffle, and each magnetic core comprises a magnetic column, an upper magnetic plate, a lower magnetic plate and two magnetic arms. The first insulating layer is wound on the outer side surfaces of the upper magnetic plate, the lower magnetic plate and the two magnetic arms of the two groups of magnetic cores, the second insulating layer is wound on the periphery of the coil winding, the periphery of a wire of the coil winding is wrapped with a varnished film, and the two insulating plastic covers oppositely cover a peripheral opening. And one insulating plastic cover is positioned between the second insulating layer and the magnetic arms on the same side of the two groups of magnetic cores. In the assembling production process of the high-energy-storage inductor, not only can the coil winding be prevented from being damaged, but also the insulating property can be enhanced, so that the production quality of products is improved, the potential safety hazard of the products is avoided, the service life of the products is prolonged, and the high-energy-storage inductor is ensured to operate efficiently, stably and safely and is safer and more reliable.

The invention belongs to the technical field of comprehensive utilization of resources and capacitor materials, and provides a method for preparing porous carbon for a supercapacitor from biomass and plastic. The method comprises the following steps: crushing, screening and drying biomass and plastic, gradually heating the uniformly mixed raw materials to a first temperature in an inert atmosphere, keeping the temperature for a period of time to obtain a pre-carbonized material, mixing the pre-carbonized material with an activating agent, and activating and pore-forming at a second temperature in the inert atmosphere to obtain a carbon material, pickling, washing and drying the carbon material to obtain porous carbon; the second temperature is higher than the first temperature. According to the invention, the generation of carbon is promoted through the synergistic effect between the biomass and the plastic, the pore channel structure and defect degree are selectively regulated and controlled, the porous carbon material with high specific surface area and high pore volume is formed, the defect degree can be controlled between 0.50 and 1.00, and excellent energy storage performance is shown.

The application relates to a kind of graphite-like capacitor carbon and its preparation method and application, relate to carbon material technical field, solve the problem that the needle coke-based capacitor carbon in the activation pore-forming process of prior art is difficult to consider high specific surface area, layered ordered graphite structure keeps, pore size structure uniform control and continuous electric conduction network, leading to the specific capacitance, rate performance and cycle stability of material are limited.The application is by mixing needle coke powder and chemical activator, first activation is carried out by heating, and the activated product is obtained, and the intermediate product A is obtained by post-processing;Intermediate product A is mixed with catalytic activator, second activation is carried out by heating, and catalytic graphitization product is obtained, and the intermediate product B is obtained by post-processing;The intermediate product B is calcined to obtain graphite-like capacitor carbon by refining treatment.The graphite-like capacitor carbon provided by the application can be applied to the preparation of supercapacitors, and the synergistic balance between high specific surface area, high packing density, excellent conductivity and structural stability is realized.

The present invention discloses a compressed air energy storage system with an air storage tank heat recovery system and a control method thereof, including a compressed air storage tank, a cold storage tank and a heat storage tank, wherein the cold storage tank outlet is connected to the temperature drop control valve inlet, the heat storage tank outlet is connected to the temperature rise control valve inlet, the temperature drop control valve outlet intersects with the temperature rise control valve outlet, and is connected to the heat exchanger inlet of the compressed air storage tank, and the heat exchanger outlet of the compressed air storage tank is divided into two paths, one path is connected to the high-temperature outlet valve inlet, and the high-temperature outlet valve outlet is connected to the heat storage tank inlet; the other path is connected to the low-temperature outlet valve inlet, and the low-temperature outlet valve outlet is connected to the cold storage tank inlet. The present invention effectively improves the energy storage capacity of the compressed air energy storage in the compressed air energy storage stage; and effectively improves the work-doing capacity of the compressed air energy storage in the energy release stage, thereby improving the electric-to-electric conversion efficiency of the compressed air energy storage as a whole.

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.

The invention discloses a distributed source network load storage micro-grid system, which comprises an intelligent micro-grid, a plurality of distributed intelligent charging control terminals and a scheduling control system, the distributed intelligent charging control terminal comprises a central controller, a wireless communication module, a controllable inverter, a controllable rectifier, a direct current charging load, a distributed photovoltaic power supply and a low-temperature superconducting film capacitor energy storage system. Wherein the low-temperature superconducting thin film capacitor energy storage system comprises a plurality of energy storage modules arranged in an underground low-temperature closed metal cabin, and each energy storage module is formed by connecting a plurality of low-temperature superconducting thin film capacitors in parallel; wherein a refrigeration system of the metal cabin adopts a semiconductor refrigeration technology, and a temperature and humidity monitor and a thin-film capacitor voltage monitoring system are arranged in the metal cabin; electric energy generated by the distributed photovoltaic power supply in real time is stored in the low-temperature superconducting thin film capacitor energy storage system and is used by the distributed intelligent charging control terminal.

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.

This invention belongs to the field of polymers and relates to a polypropylene roughening film for thin-film capacitors, its preparation method, and a metallized polypropylene film. The polypropylene roughening film comprises modified polypropylene grafted with alkenyl functional monomers, an antioxidant, and a processing aid. The modified polypropylene grafted with alkenyl functional monomers includes structural units derived from polypropylene as the matrix phase and structural units derived from alkenyl functional monomers as the dispersed phase. The ash content of the modified polypropylene grafted with alkenyl functional monomers is less than 50 ppm. The mass ratio of structural units derived from alkenyl functional monomers in the grafted state to structural units derived from alkenyl functional monomers in the self-polymerized state is greater than or equal to 1.0. The D50 of the dispersed phase is less than 450 nm. The film of this invention can maintain good dielectric and energy storage properties at high operating temperatures and is suitable for high-temperature and high-field-strength operating conditions.

The invention relates to the technical field of electrochemical materials, and specifically discloses a composite electrode material, a positive electrode, a supercapacitor and a preparation method. The composite electrode material provided by the present invention comprises a nickel foam substrate, a thin sheet of nano zinc sulfide coated on the outside of the nickel foam substrate, and a rectangular or cubic nano nickel sulfide coated on the outside of the nano zinc sulfide. The present invention prepares a double-shell coated nickel sulfide @ zinc sulfide / nickel foam composite electrode material by sequentially electrochemically depositing zinc sulfide and nickel sulfide on a nickel foam substrate under specific conditions. Its unique morphology and structure and the synergistic effect of zinc sulfide and nickel sulfide significantly improve the electronic conductivity, ion diffusion rate, chemical stability, and electrochemical activity, reduce the activation energy of electron transfer between metal centers, and increase the active sites of the composite electrode material in the electrochemical reaction, thereby significantly enhancing the energy storage performance and cycle stability performance.

The invention discloses a preparation method of an organic-inorganic hybrid phase change energy storage material, belonging to the technical field of energy storage material processing. The invention comprises the following steps: adding polyethylene glycol, tridecanedioic acid, toluene and a catalyst into a reactor and stirring, raising the temperature of the reactor to 80-90°C, and keeping the temperature for reaction for 6-8h; during the reaction, removing by-products through a water separator, and post-processing to obtain modified polyethylene glycol. The invention improves the energy storage performance of polyethylene glycol and the outer shell structure of the phase change energy storage material by optimizing the thermal conductivity and load performance of the load carrier, thereby effectively improving the anti-leakage performance and energy storage density of the phase change energy storage material, and also improving the thermal conductivity and thermal cycle stability of the phase change energy storage material.

The invention discloses a sodium niobate-based ferroelectric ceramic and a preparation method thereof, and belongs to the field of dielectric ceramics. The chemical composition general formula of the sodium niobate-based ferroelectric ceramic is (Na < 0.874-0.874 x > Yb < 0.0085-0.0085 x > Tm < 0.0085-0.0085 x > Bi < 0.075-0.75 x > Ba < 0.5 a > Sr < 0.5 b >) (Nb < 0.85-0.85 x > Ti < 0.15-0.15 x > Sn < 0.5 c > Hf < 0.5 d >) O3, a = b = c = d, and x is greater than or equal to 2 and less than or equal to 6; the ceramic is of an ABO3 type perovskite structure, and in the ABO3 type perovskite structure, Bi ions are in a compound occupation form in which the A site and the B site coexist. The preparation method comprises the following steps: (1) proportioning and refining to obtain mixed powder; (2) performing pre-synthesis and powder treatment to obtain uniform powder; (3) preparing a molded green body; (4) removing organic matters; and (5) densifying and sintering to obtain the ferroelectric ceramic. The sodium niobate-based ferroelectric ceramic provided by the invention can achieve the effects of high Wrec, high eta, wide temperature range and excellent stability at the same time.

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.

The invention provides a solid-state supercapacitor fiber electrode and a preparation method thereof, and belongs to the field of supercapacitors. The preparation method comprises the following steps: spraying a metal hydroxide solution on a graphene oxide film, then rolling the film into fibers, then performing high-temperature activation and calcination to obtain graphene porous fibers, and then electrochemically depositing MnO2 on the graphene porous fibers to obtain the supercapacitor fiber electrode MnO2 (at) aRGOF. The preparation process conditions are simple, the porous graphene fibers are obtained through high-temperature activation and calcination, ion transmission and storage are facilitated, the MnO2 (at) aRGOF electrode is obtained through subsequent electrochemical deposition, the energy storage performance of the material is further improved, and the preparation method is suitable for industrial production. The composite electrode material as a supercapacitor fiber electrode has the advantages of excellent performance and good cycling stability, and has a wide application prospect in the field of energy storage.

The invention discloses a novel calcium-based adsorbent as well as a preparation method and application thereof, and solves the technical problems that a calcium-based adsorbent in the prior art is easy to sinter, poor in stability and poor in solar energy absorption capacity. The method comprises the following steps: drying the carbide slag in a drying oven, grinding the dried carbide slag into powder, and calcining to obtain carbide slag powder; the method comprises the following steps: mixing carbide slag powder, MgO powder and FeC6H5O powder, adding the mixture into a ball milling tank, adding ethanol, and carrying out ball milling, so that the powder is fully mixed to prepare a sample; preparing a biomass solution, adding a sample, mixing, and drying; drying, grinding into powder, and calcining in an air state; and pre-calcining the calcined sample under the condition of N2 to prepare the calcium-based adsorbent. Technical support is provided for energy storage materials by utilizing solid waste and effectively utilizing biomass materials, and the material has high energy storage performance and capability of directly utilizing solar energy and has good application prospects in third-generation photo-thermal power stations.

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.

The invention discloses a multi-element isovalent ion co-doped AgNbO3 lead-free anti-ferroelectric energy storage ceramic material as well as a preparation method and application thereof, and the chemical formula of the energy storage ceramic material is Ag (0.7-3x) Bi (0.1) Tm (x) Nb (0.9) Ta (0.1) O3, 0lt, tm < 3 + > is introduced to the A site again on the basis of the Ag0. 7Bi0. 1Nb0. 9Ta0. 1O3 anti-ferroelectric energy storage ceramic material, so that the AgNbO3 lead-free anti-ferroelectric energy storage ceramic material co-doped with Bi < 3 + > and Tm < 3 + > at the A site and Ta < 5 + > at the B site is formed. According to the invention, under the synergistic effect of improving the stability of an antiferroelectric phase and improving the dielectric breakdown strength and relaxation, the prepared Ag0. 655Bi0. 1Tm0. 015Nb0. 9Ta0. 1O3 energy storage ceramic material obtains the energy storage density as high as 11.04 J / cm < 3 > and the conversion efficiency as high as 79.62% under the action of 428kV / cm, which are about four times of that of an AgNbO3 ceramic material.