185 results about "Ion intercalation" patented technology

Intercalated layered materials prepared by reacting the layered material with a coupling agent and co-intercalating an onium ion and an oligomer or polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The spacing of adjacent layers of the layered materials is expanded at least about 3 Å, preferably at least about 5 Å, usually preferably to a d-spacing of about 15-20 Å, e.g., 18 Å with the onium ion spacing/compatibilizing agent. The intercalation of the oligomer or polymer then increases the spacing of adjacent layers an additional at least 3 Å, e.g., to at least about 20 Å, preferably about 25 Å to about 30 Å, generally about 28 Å, and provides a nanocomposite having increased tensile strength, flexibility, and ductility (less brittle).

A mesoporous carbon material formed on an electrode surface in an energy storage device, and a method of forming the same are disclosed. The mesoporous carbon material acts as a high surface area ion intercalation medium for the energy storage device, and is made up of CVD-deposited carbon fullerene “onions” and carbon nanotubes (CNTs) that are interconnected in a fullerene/CNT hybrid matrix. The fullerene/CNT hybrid matrix is a high porosity material that is capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. The method, according to one embodiment, includes vaporizing a high molecular weight hydrocarbon precursor and directing the vapor onto a conductive substrate to form a mesoporous carbon material thereon.

The invention belongs to the technical field of batteries, particularly to a high-safety aqueous and organic mixed lithium ion battery. The invention applies the ion embedded-disembedded mechanism adopted by the organic lithium ion battery to the mixed system with the separation of organic electrolyte and aqueous electrolyte, and ions of embedded reaction are lithium ions. In the high-safety aqueous and organic mixed lithium ion battery, the anode adopts the aqueous embedded compound material containing lithium ions, the cathode adopts the cathode material of the organic lithium ion battery, the electrolyte solution adopts the separated organic and aqueous electrolytes containing lithium ions, and a separating membrane adopts a lithium ion exchange membrane containing a waterproof layer. The charge-discharge process only relates to the transference of the ion between the cathode and the anode, and the features of the lithium ion battery of rocking chair type are still reserved. The high-safety aqueous and organic mixed lithium ion battery has higher work voltage than the common aqueous lithium ion battery and higher power performance than the common organic lithium ion battery. The high-safety aqueous and organic mixed lithium ion battery has the characteristics of long circulating service life, high power, safety, low cost and no environment pollution, and is particularly suitable to be used as the ideal power battery of the electric automobile.

The invention discloses a preparing method of porous monocrystal IT MoS2 nanosheet. The method comprises the steps of 1, preparing 2H crystal form MoS2 nanosheet using hydrothermal method; 2, conducting stripping of multi-layered 2H crystal form MoS2 nanosheet with ultrasonic wave and assisting with a lithium-ion intercalation method. The 1T MoS2 nanosheet can be directly used for electro-catalysis hydrogen production, and compared with MoS2 with other structures, electro-catalysis hydrogen production property can get fast improvement, porous structure provides more edges for the catalysis, therefore can expose more active sites, which is beneficial to electro-catalysis hydrogen production; single-layered structure enables larger specific surface area of the catalyst, can provide more reaction active sites. Compared with a multi-layered structure, a single-layered structure reduces electric transmission resistance between layer and layer, is beneficial to transmission and transfer of electricity, thus accelerating velocity of electro-catalysis hydrogen production.

Disclosed is a manganese dioxide mesoporous material, which is composed of materials with general formulas of (A<+>)aMnbO2 and mH2O, wherein, A<+> represents the combination of three ions of sodium, hydrogen and tetramethyl ammonium, a<=0.4, 1<=b<=1.2, and m<0.6. The preparation method comprises the steps of: preparation of Na-type layered manganese dioxide, preparation of H-type layered manganese dioxide, stripping of H-type layered manganese dioxide, assembly reaction of manganese dioxide nano-layers and manganous ions, oxidation of layered manganese oxide of manganous ion intercalation layers, and roasting process. The manganese dioxide pillared layered manganese oxide mesoporous material with disorderly channel structure, uniform aperture and rather large specific surface area and pore volume is prepared by adopting the stripping/recombination process, and the manganese dioxide mesoporous material prepared by the method is tested and has the layer-to-layer spacing of between 0.65 and 0.7nm, aperture distribution of 2 to 40nm, specific surface area of between 80 and 120m<2>/g, pore volume of 0.3 to 0.4m<3>/g, and electric capacity of 150 to 240F/g, and can be used for making materials of super capacitors.

The invention relates to a high-rate lithium-ion battery and a method for preparing a composite carbon cathode material for a super-capacitor battery. The method comprises the following steps: coating a surface-nano-crystallized core with a porous carbon coat provided with macro-pore/meso-pore/micro-pore three-dimensional layer pores; doping metal particles on the surface of the coat; and carrying out low-potential treatment, wherein the three steps are sequentially achieved by a template-based method, a combined method comprising dipping, chemical plating and physical mixing, and an electrochemical method of lithium pre-doping respectively. The process of the invention has the advantages of simple method and convenient operation; the prepared material has a core-coat structure and doped metallic elements, and meanwhile, the material has good performance in double-layer electric energy storage and lithium-ion intercalation and de-intercalation energy storage and effectively improves the high-rate performance and power density of the lithium-ion battery; the material meets the requirements of super-capacitor batteries in both the lithium-ion energy storage and double-layer electric energy storage of the cathode material; accordingly, the material can be used as the cathode of a high-performance lithium-ion battery; and the material has good performance in high-rate charging/discharging, so the material has a good prospect for industrialization.

The invention belongs to the electrochemical technical field, specifically an aqueous zinc ion battery based on a pyrene-4, 5, 9, 10-tetrone positive electrode and a zinc negative electrode. The battery system specifically comprises the pyrene-4, 5, 9, 10-tetrone positive electrode, the zinc negative electrode and a zinc ion-containing aqueous electrolyte. In discharging of the battery, the negative electrode zinc loses electrons to be changed into zinc ions, the zinc ions are dispersed to the positive electrode, and the pyrene-4, 5, 9, 10-tetrone in the positive electrode obtains electrons tobe subjected to an enolization reaction to store zinc ions, and the electrons flow from the negative electrode to the positive electrode through an external circuit; and in the charging process, thezinc ions are separated from the organic matter of the positive electrode to be diffused to the negative electrode to be deposited on the surface of the negative electrode, and the electrons flow fromthe positive electrode to the negative electrode through an external circuit. Damage to the electrode material structure caused by metal ion intercalation/deintercalation in the electrode material can be avoided, so that the cycle life of the battery is prolonged; and the battery has the characteristics of long cycle life, high energy density, high safety, greenness and environmental protection and the like, and has high application prospect in the large-scale energy storage field.

The invention discloses a preparation method of a biomass hard carbon material for a negative electrode of a sodium ion battery, which adopts cheap and easily available biomass as a carbon source to prepare a hard carbon material for the negative electrode of the sodium ion battery by a simple and convenient method, and can effectively reduce the cost of the sodium ion battery. At the same time, the hard carbon material has large carbon layer spacing and can accommodate sodium ion intercalation and desorption, and the prepared sodium ion battery has excellent electrochemical performance and good industrial prospect, and is very suitable for a large-scale energy storage system.

The invention discloses a preparation method and application of a novel chloride ion removal material Ti3C2Tx/Ag. The method includes: etching a block Ti3AlC2 to obtain laminar Ti3C2Tx-MXene; ultrasonically stripping the Ti3C2Tx-MXene solution, and taking a supernatant to obtain a few-lamella Ti3C2Tx-MXene solution; dissolving a certain amount of AgNO3 in deionized water, and adding a certain amount of hydrochloric acid under an ultrasonic condition to obtain an AgCl colloidal solution; adding the obtained AgCl colloid into the few-lamella Ti3C2Tx-MXene solution, and performing oscillation fora certain time under the conditions of constant temperature and constant rotating speed; and carrying out vacuum filtration and separation on the reacted mixed solution, performing washing with deionized water for several times, and conducting natural drying at room temperature to obtain the Ti3C2Tx/Ag film. An in-situ self-reduction technology is utilized, AgCl colloid is used as an oxidizing agent, Ti3C2Tx-MXene is used as a reducing agent, the loading capacity and the particle size of Ag are regulated and controlled by controlling the reaction time, and the synthesis method is simple and practicable; based on the battery effect (conversion reaction) of Ag nanoparticles and the pseudocapacitance behavior (ion intercalation) of Ti3C2Tx, the prepared and synthesized Ti3C2Tx/Ag film showsexcellent chloride ion removal capability and good desalination performance.

The invention discloses a preparation method and an application of a sodium-ion-embedded manganese dioxide/nitrogen-doped porous carbon composite material, relates to a preparation method and an application of a manganese dioxide composite material, and aims to solves the problems of poor rate capacity and low capacitance retention rate when manganese dioxide is used as an electrode material of apseudo-capacitor type supercapacitor. The method comprises the following steps: 1, preparing n-dodecahedron ZIF-67; 2, preparing a ZIF-67-derived nano-porous carbon material; and 3, performing compounding to obtain the sodium-ion-embedded manganese dioxide/nitrogen-doped porous carbon composite material. The sodium-ion-embedded manganese dioxide/nitrogen-doped porous carbon composite material is used as a positive electrode material of a supercapacitor. According to the method, the sodium-ion-embedded manganese dioxide/nitrogen-doped porous carbon composite material can be obtained.

The invention relates to an aqueous zinc ion single liquid flow battery system, which comprises a single battery or electric pile formed by over two single batteries in series connection, and an electrolyte solution equipped liquid storage tank. The single battery includes an anode and a cathode, the solute of the electrolyte solution is composed of a zinc ion-containing soluble salt and a soluble salt containing lithium ions and/or sodium ions, and the solvent is water. The anode active material is one of Li or/and Na ion embedded Mn oxide, Co oxide, Ni oxide and Fe oxide or a mixed oxide of more than two of the oxides, and the cathode is a sedimentary type electrode. The anode reaction of the battery adopts intercalation and deintercalation reaction of lithium ions or/and sodium ions, and has higher electrochemical reversibility than the zinc ion intercalation and deintercalation reaction of zinc ion liquid flow batteries. The cathode of the battery adopts zinc deposition dissolution, and compared with the lithium ion and/or sodium ion intercalation and deintercalation reaction of aqueous lithium ion battery cathodes, has higher reversibility, lower price and better cyclic stability.

The invention belongs to the technical field of electrochemistry, and particularly relates to a novel aqueous lithium ion battery with high properties. According to the aqueous lithium ion battery with the high properties provided by the invention, an ion intercalation-deintercalation mechanism used by the organic lithium ion battery is applied to an energy storage device using a solution as electrolyte. Ions for an intercalation reaction are lithium ions. According to the novel aqueous lithium ion battery with the high properties provided by the invention, a positive electrode uses an embeddable compound material with lithium ions; a negative electrode uses a C-MxTiP2O(7+y) (M is one or more than one of Fe, Al, Co, Ni, Mn, Zn and Cu ions) material coated by carbon; and the electrolyte uses aqueous electrolyte containing lithium ions. The aqueous lithium ion battery provided by the invention has the characteristics of long cycle life, high powder, security, low cost and no environment pollution, and is particularly applicable to an ideal power battery of an electric automobile.

The invention discloses a preparation method of an ionic intercalation type two-dimensional material. The preparation method comprises the following steps: enabling salt to be in a molten state at preset temperature by using a molten-salt growth method; adding a metal salt precursor in molten salt; and reacting for preset time and taking out, cooling, cleaning, carrying out suction filtering and drying to obtain the ionic intercalation type two-dimensional material. Positive ion intercalation type two-dimensional metallic oxide and negative ion intercalation type two-dimensional metal hydroxide can be prepared; types of positive ions and negative ions in the prepared two-dimensional material can be regulated and controlled by materials of the molten salt and metal salt; another ionic intercalation type two-dimensional material can also be prepared by the method; and the prepared ionic intercalation type two-dimensional material has quite large application prospect in the aspects of energy storage, catalysis, ion exchange and the like.

The invention discloses modified MXenes powder as well as a preparation method and application thereof. The modified MXenes powder is prepared from a MXenes matrix which is of a layer structure and anano metal particle which is distributed between layers and/or on the external surface of the MXenes matrix; the modified MXenes powder is prepared through a metal ion intercalation method; the modified MXenes powder is used as a reinforcing phase to reinforce a metal material; and an obtained metal based composite material not only has excellent mechanical characteristics of high strength, high hardness, high wear resistance and high ductility and the like, but also has favorable electric conductivity and heat conductivity.

The invention relates to TPU (thermoplastic polyurethane) elastomer composition with high crystallization capacity. The composition is characterized by being prepared from 100 parts by weight of TPU elastomers and 0.1-20 parts by weight of layered inorganic compounds, wherein preferably, the layered inorganic compounds are modified layered inorganic compounds treated with an organic ion intercalation modifier, and the dosage of the organic ion intercalation modifier is 10wt%-60wt%, preferably, 30wt%-50wt%, of the modified layered inorganic compounds. The crystallization peak temperature of theTPU composition with high crystallization capacity can be increased by 10 DEG C or more, and degree of crystallinity is increased by 10% or higher.

The invention relates to a method for achieving 2H-to-1T phase transition of molybdenum disulfide. The method comprises the steps: dissolving molybdenum disulfide in an aqueous solution of ethanol, and carrying out ultrasonic dispersion stripping; adding a surfactant into the solution obtained through ultrasonic dispersion stripping, carrying out uniform dispersion, placing the dispersion solution into a supercritical carbon dioxide reactor, and carrying out a reaction for 4 to 6 hours under the conditions of 40 DEG C and 16Mpa; carrying out separation and purification on the reaction solution. According to the method provided by the invention, the phase change of MoS2 is achieved in a surfactant micellar system constructed on the basis of assistance of supercritical carbon dioxide, a novel method mechanism for achieving the phase transition of MoS2 is obtained, and the content of phase 1T reaches about 90%, so that the method is simple in process and simple in aftertreatment, is novel, environmentally friendly and safe and has repeatability; compared with high-pressure high-temperature reaction conditions of ion intercalation methods, the method further has the advantages of moderateness and safety.

The invention relates to a method for preparing nano-black phosphorus by electric field and microwave field co-assisted stripping of black phosphorus, and belongs to the technical field of preparationof nano materials. The method comprises the following steps: fixing the black phosphorus on a metal rod by using conductive adhesive and taking the metal rod as a working electrode, wherein the working electrode is an anode or cathode; taking a platinum sheet as a counter electrode, vertically putting the working electrode and the counter electrode in electrolyte in parallel, wherein the distancebetween the working electrode and the counter electrode is 2 to 5cm; under the condition that the voltage is 2 to 20 V, carrying out ion intercalation on the black phosphorus for 0.5 to 2 hours to obtain intercalated black phosphorus dispersion liquid A; in the atmosphere of 100 to 800W microwave power and inert gas, carrying out microwave stripping treatment on the intercalated black phosphorusdispersion liquid A for 1 to 10 minutes to obtain black phosphorus dispersion liquid B; carrying out centrifugal separation on the black phosphorus dispersion liquid B to obtain the nano-black phosphorus.

The invention relates to thermal stabilization type ponceau 2R intercalation hydrotalcite dye and a preparation method thereof. A structural formula is [M2+1-xM3+x(OH)2](C18H12N2Na4O13S4)2-x/2-mH2O, wherein 0.1<x<0.5, 0.2<(x/1-x)<0.5, and m=1-3x/2. M2+ is one or two of Mg2+, Zn2+, Fe2+, Ni2+ or Cu2. M3+ is a trivalent metal ion AL3+, Fe3+ or Cr3+. A hydrotalcite-like precursor with a negative ion C1-, NO3- or SO42- is prepared by adopting a co-precipitation method. Ponceau 2R negative ions with large ionic radius replace intercalation negative ions and enter hydrotalcite intercalation through a hydrothermal ion exchange method to produce ponceau 2R negative ion intercalation hydrotalcite. The ponceau 2R intercalation hydrotalcite dye has good thermal stability and can serve as novel dye to be used.

The invention belongs to the field of preparation of positive electrode materials for lithium ion batteries, and more particularly to a lithium ion battery organic positive electrode material, a preparation method thereof and application. The material is a polymer formed by copolymerization of pyrene or a pyrene derivative as a comonomer. The organic positive electrode material uses a conjugated aromatic fused ring of pyrene as an electrochemical redox site, and due to an anion insertion mechanism based on the conjugated aromatic fused ring, the potential of the redox electrode is increased, the output voltage of the lithium ion battery is increased, and the energy density of the positive electrode material is thus improved. The lithium ion battery made of the material provided in the invention has high energy density, good cycle stability and rate performance, and is expected to be used in the next generation of high energy density, environment friendly and sustainable energy storagebatteries.

The invention relates to a preparation method of a high-dispersion supported nano metal Fe-based catalyst and belongs to the technical field of Fe-based catalysts. According to the preparation method, an Mg-LDHs precursor containing an iron coordination ion intercalation is prepared by virtue of an intercalation assembly method; and then, with methane as an air source, iron nano particles are further reduced and multiwalled carbon nano tubes grow out simultaneously in one step by virtue of a chemical vapor deposition method, and thus the magnalium composite metal oxide supported high-dispersion iron-based catalyst containing the iron nano particles coated with the multiwalled carbon nano tubes. The high-dispersion supported nano metal Fe-based catalyst is structurally characterized in that the iron nano particles are supported on the surface of the magnalium composite metal oxide after being coated with the multiwalled carbon nano tubes. By utilizing the preparation method, the chemical stability of active nano metal particles is improved, the gather of the active nano particles is restrained, and the structure stability of the catalyst is improved due to the strong interaction between the multiwalled carbon nano tubes and the iron nano particles. When used as a fenton-like catalyst, the high-dispersion supported nano metal Fe-based catalyst shows good catalytic oxidation performance to organic dyestuff methylene blue, the degradation rate reaches 95.0-100%, and the high-dispersion supported nano metal Fe-based catalyst has potential practical application value.

The invention relates to a biological carbon electrode material and a preparation method thereof. The preparation method comprises mixing plant straws and water, carrying out ball milling to obtain plant straw powder, wherein a ratio of the plant straws to water is 3 g: (20 to 50) mL, adding an activator into the plant straw powder subjected to ball milling, heating the mixture in protective gas to a temperature of 500-1100 DEG C, carrying out thermal insulation for 2-6h, and treating the product to obtain the biological carbon electrode material. The biological carbon electrode material is prepared from renewable agricultural by-product plant straws, and through ball milling and activator carbonization, the three-dimensional network structure carbon material having a certain graphitization degree is obtained. The three-dimensional network structure carbon material has a three-dimensional network structure and good ion intercalation and diffusion properties, shortens ion intercalation and detachment distances and guarantees cycling stability of a sodium ion battery.

The invention discloses a nano particle agglomeration type nano porous electrochemical driver and a preparation method and testing method thereof. The driver comprises a deposition substrate of a flexible conductor material and a driving film deposited on the deposition substrate. According to the preparation method, high-energy laser beam bombardment is utilized to realize the transformation of atarget material from a solid state to an plasma state to a solid state, and thus the nano particle agglomeration type nano porous driving film can be formed on different substrates. The nano porous electrochemical driver with controllable particle size can be obtained by adjusting and controlling preparation conditions such as target base spacing, substrate rotating speed and deposition temperature. The defect that a traditional electrochemical driver cannot achieve both the response rate and the deformation capability at the same time is overcome; and by shortening the ion embedding path andimproving the ion adsorption capacity, the driving speed and the deformation amplitude value are synchronously improved. The driver has the advantages of high response speed, high driving amplitude,high object carrying driving capability, simple process and low cost, and the application of the electrochemical driver in the fields of small medical instruments, micro-nano electromechanical systemsand the like can be promoted.

The invention provides a lithium ion battery which comprises a cathode, an anode, a separator between the cathode and the anode, and a electrolyte; the cathode active material is graphite with a specific surface area of 1-20 m<2>/g, the anode active material is graphene or a graphene derivative with a specific surface area of 200-1500 m<2>/g, and the mass ratio of the anode active material to the cathode active material is 1:3-15. Additionally, the invention provided a preparation method of the lithium ion battery. The energy storage mechanism of the cathode active material and the anode active material of the lithium ion battery is an ion intercalation-deintercalation mechanism, so that charge storage capability of the electrode is improved and the capacity of the whole system is improved. The preparation method of the lithium ion battery is simple in operation.

The invention discloses an intercalation molybdenum oxide single crystal film as well as a preparation method and a purpose thereof. The method comprises the following steps of heating molybdenum trioxide powder to be 580 to 880 DEG C in atmospheric environment; maintaining the state for not less than 1 hour; then, cooling the materials to 350 to 550 DEG C; performing collection by a substrate toobtain a molybdenum oxide single crystal sheet; dissolving SnCl2 into de-ionized water; adding the molybdenum oxide single crystal sheet; heating the reaction system to be 30 to 90 DEG C; performing reaction for 10 to 180 min; washing a product to obtain a suspension; treating the suspension by a suction filtration method or dispersing the suspension onto the required substrate to obtain the intercalation molybdenum oxide single crystal film. The ion intercalation method is used for intercalating Sn<4+> metal ions into MoO3 interlayer Van der Waals gaps; the between-band state is obviously expanded under the condition of avoiding the oxygen vacancy generation; the conductivity of the MoO3 is obviously improved; the light response range of the MoO3 is expanded, so that the response to ultraviolet light, visible light and near infrared light are realized.

The invention provides a method for preparing Ti2CTx from fuse salt and performing positive ion intercalation. The method comprises the steps: weighing the raw materials of Ti2AlC powder, potassium fluoride, lithium fluoride and sodium fluoride according to a mass ratio of 1 to (0.58 to 0.675) to (0 to 0.3) to (0.12 to 0.325), evenly mixing, putting into a tubular furnace to be roasted and utilizing argon for protection; heating to 550 to 850 DEG C at a temperature rise rate of 10 DEG C/min and keeping warm for 30 to 50 min; finishing roasting, naturally cooling and obtaining a fuse salt product; adding the fuse salt product into 4 mol/L sulfuric acid, stirring for 1 h under the normal temperature, adding deionized water, centrifugally washing until a pH of liquid supernatant is about 7 and pouring out the liquid supernatant to obtain precipitate; adding the precipitate into ammonium hydroxide, stirring for 1 h under the normal temperature, then adding deionized water, centrifugally washing 4 to 5 times and pouring out the liquid supernatant to obtain precipitate; adding the precipitate into deionized water, performing ultrasonic treatment for 60 min, centrifuging for 25 to 45 minunder the rotation speed of 6000 rpm and filtering upper-layer suspension liquid to obtain a layered Ti2CTx material. The method breaks through a traditional chemical liquid phase etching method for preparing Ti2CTx, and a preparation method which has the advantages safety in operation, simpleness and high efficiency is provided.