736 results about "Conductive polymer" patented technology

The invention belongs to the technical field of aerogel, and particularly relates to high-conductivity aerogel powder as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly preparing a graphene / polypyrrole nanosheet composite material with a three-dimensional structure, and then preparing the polyimide / graphene / polypyrrole ternary hybrid conductive aerogel by taking a polyamide acid solution as a precursor through a solution dipping and freeze drying process. Polyimide is used as a framework of high-conductivity aerogel powder, excellent mechanical strength and structural integrity are provided, the common brittleness problem of a pure graphene carbon material or polypyrrole conductive polymer aerogel is solved, and the three-dimensional graphene / polypyrrole nanosheet composite material has excellent elasticity and toughness and can be used for preparing a composite material with high conductivity. The polyimide aerogel prepared by the method can be dispersed in a polyimide matrix as a nano reinforcement, can effectively transfer stress and prevent crack propagation, and endows the aerogel with higher mechanical properties.

The invention discloses a diaphragm and an electrochemical device, and belongs to the field of electrochemical energy storage. The diaphragm is used for the electrochemical device and comprises a base membrane and a coating arranged on one side or two sides of the base membrane in the thickness direction, the coating comprises a composite phase-change material, the composite phase-change material comprises a conductive polymer layer and a tubular material, the conductive polymer layer partially or completely coats the surface of the tubular material, and the tubular material is coated with the conductive polymer layer. A phase change material is contained in the tube of the tubular material. According to the diaphragm, the high-temperature thermal safety performance of the diaphragm can be improved under the condition that the high-temperature mechanical performance of the diaphragm is not damaged.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a three-dimensional polypyrrole conductive material and a preparation method and application thereof. The preparation method of the three-dimensional polypyrrole conductive material comprises the following steps: (1) preparing a metal copper quantum dot and graphene oxide mixed dispersion liquid; (2) adding an oxidizing agent to obtain a reaction solution; (3) adding a pyrrole monomer, and carrying out a polymerization reaction to obtain a graphene oxide / polypyrrole composite dispersion liquid; and (4) adding a reducing agent to reduce the graphene oxide to obtain the three-dimensional polypyrrole conductive material. After the metal copper quantum dots are loaded on the graphene oxide sheet layer, the graphene oxide sheet layer becomes a structure-oriented core in subsequent polymerization, and finally the stable three-dimensional conductive composite material with graphene as a framework and polypyrrole nanosheets as connection points is formed. Compared with a traditional three-dimensional material formed by overlapping and integrating a two-dimensional graphene sheet layer and a conductive nanowire / nanorod, the three-dimensional material with the structure can form an efficient conductive path more easily under the condition of low filler content.

The invention relates to the field of lithium ion batteries, in particular to a biomass carbon / silicon / conducting polymer ternary composite negative electrode material with a hierarchical pore structure and a preparation method and application thereof. According to the material, active nano silicon is effectively limited by utilizing natural graded pore channels of biomass, and a conductive polymer layer with elastic strain buffering capability is prepared by combining a low-temperature in-situ polymerization process. According to the structure, biomass carbon pores are filled with the conductive polymer layer, the specific surface area of the material can be reduced, interface side reaction can be inhibited, and therefore the first coulombic efficiency and cycling stability of the material are improved.

The invention relates to the field of energy storage batteries, in particular to a surface modification method of a carbon-based negative electrode material for a lithium ion battery and the carbon-based negative electrode material.The surface modification method comprises the following steps that S1, the carbon-based material, soluble saccharides, a lithium source and a solvent are mixed; s2, carrying out ball milling treatment on the slurry to obtain a precursor mixture; s3, calcining the precursor mixture to obtain a primary modified carbon material; s4, treating the primary modified carbon material in ozone to obtain an oxidation modified carbon material; and S5, dispersing the oxidation modified carbon material in a solution containing a conductive monomer and an oxidizing agent for chemical polymerization reaction, and depositing on the surface of the carbon material to form a polymer coating layer, thereby obtaining the surface modified carbon-based negative electrode material. By constructing a pre-lithiated carbon coated inner core and an ozone activation interface and preparing a modification layer of a conductive polymer, the core problems that a traditional carbon negative electrode is low in first efficiency, short in cycle life and poor in rate capability and is difficult to consider at the same time are solved.

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a high-conductivity polypyrrole composite material as well as a preparation method and application thereof. According to the preparation method, sulfhydrylated graphene oxide is taken as a substrate, metal copper quantum dots are taken as an auxiliary material, pyrrole monomers are subjected to in-situ polymerization on the surface of the sulfhydrylated graphene oxide to form a nanosheet structure, and the sulfhydrylated graphene oxide is reduced to form the high-conductivity composite material taking polypyrrole and graphene as substrates. After the graphene oxide is subjected to sulfhydrylation modification, the copper quantum dots are more uniformly distributed on the surface of the graphene oxide, the stability of the metal copper quantum dots is improved, and the stability of the graphene oxide in the reduction and processing processes can be improved. The polypyrrole nanosheets in the high-conductivity polypyrrole composite material are vertically distributed on the surface of the graphene, so that the porosity of the composite material is improved, the specific surface area is increased, the mechanical property of polypyrrole is improved, and the stability of the morphology of the polypyrrole is favorably maintained in the processing process.

The invention relates to a silicon-based negative electrode material with a composite coating layer, the silicon-based negative electrode material is of a core-shell structure and comprises a silicon-based material core and the composite coating layer, and the composite coating layer sequentially comprises a carboxyl-containing ionic conductive polymer layer and an electronic conductive polymer layer from inside to outside; wherein the carboxyl group-containing ionic conductive polymer layer is formed by carrying out surface modification on a silicon-based material by using an alkenyl silane coupling agent to form a precursor A, and then carrying out in-situ copolymerization on the precursor A, unsaturated carboxylic acid and an ionic group-containing olefin monomer under the action of an initiator; the precursor A and the carboxyl-containing ionic conductive polymer layer jointly form a precursor B; and the electronic conductive polymer layer is formed by carrying out chemical oxidation polymerization on an electronic conductive polymer monomer on the surface of the precursor B under the action of an oxidizing agent. Strong interface bonding force exists between the composite coating layer and the silicon-based core and between the composite coating layer and the silicon-based core, so that silicon expansion is effectively relieved, the cycling stability is improved, and meanwhile the ion transmission and electron transmission capacity is improved.

The invention provides a composite silicon-carbon negative electrode material and a preparation method thereof, a negative electrode plate and a battery. The composite silicon-carbon negative electrode material comprises a silicon-carbon composite core, and a gradient pore carbon buffer layer and a dynamic self-healing binder layer which sequentially coat the surface of the silicon-carbon composite core, a branched carbon nanostructure grows in the pore wall of the gradient pore carbon buffer layer, the dynamic self-healing binder layer partially permeates into the pores of the gradient pore carbon buffer layer, the dynamic self-healing binder layer contains dynamic disulfide bonds, and the dynamic self-healing binder layer comprises a composite binder and a conductive high-molecular polymer. According to the invention, the gradient pore buffer layer is arranged on the surface of the silicon-carbon particles, and meanwhile, the self-healing binder containing dynamic disulfide bonds is used for permeation filling, so that three-dimensional cooperative regulation and control of graded dissipation of expansion stress, self-repairing of microcracks and ion / electron dual-path conduction are realized; the three core problems of electrode pulverization caused by volume expansion, interface impedance sharp increase and long circulation capacity attenuation are thoroughly solved.

The invention provides a three-dimensional silicon negative electrode material and a preparation method and application thereof. The three-dimensional silicon negative electrode material comprises a porous silicon material, and the pore wall surface and the particle outer surface of the porous silicon material are coated with an oxide layer, a carbon coating layer and a solid electrolyte layer; and the outer surfaces of the particles of the porous silicon material are coated with conductive polymer layers. According to the three-dimensional silicon negative electrode material, the hole wall surfaces and the outer surfaces of the particles are coated with the oxide layers, the carbon layers and the solid electrolyte layers, so that the structural stability of the material is guaranteed, an electron transmission channel and an ion transmission channel are further constructed, and meanwhile, the outer surfaces of the particles are further coated with the conductive polymer layers; and the structural integrity of the three-dimensional silicon negative electrode material in the circulation process is ensured.

The invention discloses an electromagnetic shielding film as well as a preparation method and application thereof. The electromagnetic shielding film comprises the following components: InZnSeyC and a conductive polymer, the conductive polymer is prepared from poly (3, 4-ethylenedioxythiophene) and polystyrene sulfonate; the electromagnetic shielding film prepared by the invention has enough flexibility, bendability and self-supporting characteristic. The composite film can keep stable in structure without additional support, and has potential application prospects in the fields of 6G communication, high-frequency electromagnetic wave interference solving, health protection, flexible circuit boards and the like.

The invention relates to the field of film engineering, in particular to a conductive film and a preparation method thereof. The preparation method comprises the following steps: dissolving a water-soluble high-molecular polymer in a solvent to obtain a polymer solution, dissolving a polyanion electrolyte in the polymer solution, and swelling to obtain a matrix; and obtaining a conductive solution containing the water-soluble conductive polymer, adding the conductive solution into the matrix, and stirring until the conductive solution is homogenized to obtain the spinning solution. And the content of each component in the spinning solution is moderate. And performing electrostatic spinning by using the spinning solution to form the conductive film on the receiver. The conductive thin film is prepared in an electrostatic spinning mode, and manufacturing of the large-area flexible conductive thin film with the micro-nano-scale thickness is achieved. The polyanion electrolyte is added into the spinning solution, so that the binding force between the electroactive component and the carrier polymer is greatly improved, a mechanical phase and an electrical phase form a bicontinuous phase separation state, a gel spinning precursor is formed and drafted into filaments from a needle tip, and a uniform gel-like conductive film is formed on the surface of the receiver.

A structure includes a first substrate, a second substrate, and an interface region. The first substrate includes a first layer having at least one electrically conductive first portion and at least one electrically insulative second portion. The second substrate includes a second layer having at least one electrically conductive third portion and at least one electrically insulative fourth portion. The interface region is between the first layer and the second layer and includes at least one electrically conductive polymer material.

The invention discloses an ear electroencephalogram acquisition sleep monitoring device based on conductive leather and a personalized audio intervention method of the ear electroencephalogram acquisition sleep monitoring device, and aims to solve the problems that existing sleep assisting equipment is poor in wearing comfort and inaccurate in monitoring, and an intervention scheme is lack of personalization. The device comprises preparation of a conductive leather electrode and integration of the conductive leather electrode, an earplug, a loudspeaker and other devices. According to the conductive leather electrode, a conductive polymer (such as poly (3, 4-ethylenedioxythiophene) and a derivative thereof) is combined with natural leather through an in-situ polymerization method to form a flexible electrode material with high biocompatibility. The electrode is combined with an earplug, a loudspeaker and other devices and can be stably attached to the ear canal, and high-signal-to-noise-ratio sleep physiological electric signal (such as myoelectricity, electroencephalogram or electrocardiosignals) collection is achieved. The sleep stage is identified through machine learning, and the loudspeaker module is controlled to play different types of sleep-aiding audios. The core lies in that the device can synchronously evaluate sleep physiological signal changes of a user under different audio stimulation, so that personalized sleep-aiding audios which are most effective for the individual are screened out, and an exclusive scheme library is established. The system has the advantages of being comfortable to wear, high in signal quality, wide in applicability and the like, and can be widely applied to the fields of health monitoring, human-computer interaction, medical diagnosis and the like.

The application provides a wearable portable hairband for mental fatigue detection and intervention, a flexible conductive polymer dry electrode is embedded in the inner side of the hairband, the dry electrode is attached to the scalp through mechanical pressure, and thus inductive collection is realized without conductive paste; the output end of the dry electrode collection signal is directly connected to a collection front end located at the side edge of the hairband through FPC, the front end is integrated with an amplifier and an analog-to-digital converter, weak electrical signals on the cerebral cortex are amplified and converted into a data format; a SoC chip is selected as a processor to build a full-integrated edge computing platform inside the flexible fabric hairband, and the calculation task of mental fatigue detection is sunk to the hairband end; an ultrathin bone conduction unit is used as an acoustic output component, which is connected through a flexible circuit and embedded in the inner side of the hairband corresponding to the anatomical site of the user's temple, when the mental fatigue detection result triggers the fatigue warning threshold, a binaural rhythm intervention module is activated to perform binaural rhythm intervention. The application can perform mental fatigue detection and intervention.

The invention belongs to the technical field of polymer materials, and particularly relates to a conductive polymer material as well as a preparation method and application thereof. The conductive polymer material is prepared from the following components in parts by weight: 0.1 to 5 parts of ionic liquid, 0.1 to 10 parts of filler and 1 to 100 parts of polymer, the ionic liquid comprises at least one of organic salt and metal salt; the organic salt comprises at least one of p-toluenesulfonic acid triethylamine salt, p-toluenesulfonic acid tripropylamine salt, trifluoromethanesulfonic acid triethylamine salt and trifluoromethanesulfonic acid tripropylamine salt; the metal salt comprises at least one of potassium trifluoromethanesulfonate and sodium trifluoromethanesulfonate. The conductive polymer material prepared by the invention has the advantages of excellent conductivity, high transparency, good water resistance, good mechanical properties, good environmental stability, strong thermal stability and strong self-repairing ability.

The invention relates to the technical field of battery materials, and particularly discloses a composite material for an aqueous ammonium ion / proton hybrid battery and a preparation method and application thereof. The conductive polymer coated manganese dioxide composite material is prepared by adopting an organic-inorganic interface reaction, the preparation process is simple and easy to operate, the required raw materials are low in cost and easy to obtain, and the synthesized material is a nanoscale material and has the advantages of good dispersity, high specific surface area, good conductivity, stable structure and the like; when the material is applied to the aqueous ammonium ion / proton mixed ion battery, the obtained battery material has excellent rate capability and stable cycle life, has a high application prospect, and provides a new design idea for the existing aqueous ammonium ion / proton mixed ion battery.

A structure includes a first substrate, a second substrate, and an interface region. The first substrate includes a first layer having at least one electrically conductive first portion and at least one electrically insulative second portion. The second substrate includes a second layer having at least one electrically conductive third portion and at least one electrically insulative fourth portion. The interface region is between the first layer and the second layer and includes at least one electrically conductive polymer material.

An electrolytic capacitor disclosed herein includes: a stacked body of an anode foil having a dielectric layer formed on a surface thereof and a cathode foil; and a layer containing a conductive polymer and an insulating material disposed between the dielectric layer and the cathode foil. The insulating material is at least one kind of material selected from the group consisting of insulating fibers and insulating particles. No separator is disposed between the anode foil and the cathode foil.

The invention provides a high-voltage-resistant supercapacitor electrode plate, which relates to the field of electrical engineering and comprises a plate main body, a connecting plate, a connecting mounting hole, a winding column body, a plate carbon layer, a conductive polymer layer, an oxide protection layer, a plate winding mechanism and a plate mounting mechanism, the connecting pole piece is positioned on the upper end surface of the pole piece main body; the connecting mounting holes are formed in the outer sides of the connecting pole pieces; the winding column body is positioned on the lower side of the pole piece main body; the pole piece carbon layer is arranged in the pole piece main body; the conductive polymer layer is arranged in the pole piece main body; the oxide protection layer is arranged in the pole piece main body; the pole piece winding mechanism is arranged on the outer side of the pole piece main body; and the pole piece mounting mechanism is arranged on the upper side of the pole piece main body. Through the pole piece winding mechanism, the winding stability of the electrode pole piece is ensured, and through the pole piece mounting mechanism, the connection pole piece mounting is convenient. The problem that the winding tightness of the electrode pole piece is affected due to winding looseness after the electrode pole piece is wound is solved.

The invention discloses an electromagnetic shielding material as well as a preparation method and application thereof. The electromagnetic shielding material comprises a transparent conductive ITO (Indium Tin Oxide) film substrate; the periodic nanocrystalline pixel arrays are respectively positioned on the upper surface and the lower surface of the ITO film substrate; the periodic nanocrystalline pixel array is formed by arranging a plurality of nanocrystalline units according to a specific pattern, the patterns of the nanocrystalline units on the upper surface and the lower surface are complementary and are shaped like a Chinese character'tian 'or' 8 ', cells occupied by nanocrystalline on the upper surface are smaller than cells occupied by nanocrystalline on the lower surface, such as combinations of a cross shape / an open square ring, an H shape / a 2 shape and the like, and therefore the periodic nanocrystalline pixel array is formed. According to the present invention, with the cooperation of the global conductivity of the ITO substrate and the local electromagnetic attenuation characteristic of the nanocrystalline pixel, the electromagnetic shielding efficiency is more than or equal to 40 dB (0.01 MHz-10 GHz) and the global light transmittance is more than or equal to 60%, such that the material is suitable for the electronic device display window requiring high light transmittance and strong electromagnetic shielding, and the problems that the traditional metal shielding material is opaque, and the shielding efficiency of the conductive polymer is insufficient are solved.

The invention provides a hard and tough alternately laminated light-weight corrosion-resistant composite material, which comprises a laminated matrix formed by periodically and alternately stacking high-strength aluminum alloy layers and carbon fiber reinforced thermoplastic resin layers; the metallurgical-mechanical composite interface is located between the high-strength aluminum alloy layer and the carbon fiber reinforced thermoplastic resin layer, forms a nanoscale coarse structure on the surface of the aluminum alloy through plasma activation treatment, and is combined with the thermoplastic resin matrix to form a transition area with mechanical interlocking and chemical bonding functions; the conductive polymer anticorrosive coating covers the surface of the outermost layer of the laminated matrix; the preparation method of the light-weight anti-corrosion composite material comprises the following steps: surface pretreatment, plasma activation treatment, laying, hot-pressing curing and preparation of an anti-corrosion coating. Through the synergistic effect of macroscopic laminated configuration design, microcosmic interface strengthening and a surface active anti-corrosion coating, the advantage of light weight is kept, and meanwhile, balanced improvement of impact wear resistance and long-acting electrochemical corrosion resistance is achieved.

The invention discloses a high-performance electrode, a preparation method thereof and a solid-state battery. The high-performance electrode comprises a positive electrode, a current collector and a negative electrode, and the current collector is located between the positive electrode and the negative electrode; the negative electrode comprises a metal lithium composite material layer, and the metal lithium composite material layer comprises a granular metal lithium composite material or a pressure-deformed granular metal lithium composite material. The metal lithium composite material comprises: a lithium-containing core; the middle layer is constructed on the surface of the inner core and comprises a first framework formed by interweaving a first framework material, a second framework formed by a second framework material inserted into the first framework, and a limiting polymer for fixing the relative positions of the first framework and the second framework; and a housing comprising a conductive polymer layer and a lithium fast ion conductor distributed in the conductive polymer layer. The high-performance electrode has excellent cycle performance and high safety characteristics.

This invention provides a composite electrode for the comprehensive recovery of valuable metals, its preparation method, and its application. The composite electrode comprises a positive electrode active layer and a modified matrix layer. The modified matrix layer includes a tubular solid electrolyte body and a modified material layer disposed on the surface of the tubular solid electrolyte body; the modified material layer comprises a conductive polymer. The electrochemical lithium extraction combined with chemical reduction leaching of nickel, cobalt, and manganese using this composite electrode not only achieves high-efficiency recovery of valuable metals such as lithium, nickel, cobalt, and manganese, but also significantly reduces wastewater treatment costs and environmental risks.

The application discloses a positive electrode material, a preparation method thereof, a positive electrode sheet, a battery and a power utilization device. The positive electrode material comprises a ternary NCM material, and the surface of the ternary NCM material is coated with Co 2+ / conductive polymer material to form a modified ternary NCM material. In the application, Co 2+ is compounded with the conductive polymer on the ternary NCM material, which not only improves the cycle performance of the battery, but also enhances the peeling strength of the electrode sheet, and the optimization effects of Co 2+ and the conductive polymer on the battery performance are synergistically enhanced.

The application relates to a conductive polymer-based composite grounding device, which comprises a buried box, the buried box is buried below the ground, an internal part of the buried box is provided with a grounding body, the grounding body comprises a conductive polymer shell and a composite metal core arranged in the conductive polymer shell; and a driving assembly is used for driving the grounding body to enter the ground. The application has the advantages that by arranging the grounding body, the grounding device can form a continuous conductive path by taking the conductive polymer as a matrix when actually grounding, can effectively enhance the mechanical strength and corrosion resistance of the grounding body through the columnar conductive polymer shell, can improve large-current release by taking the built-in composite metal core as a supporting structure, and can ensure the effect of stable current conduction by forming a three-dimensional conductive network through the conductive phase and the reinforcing phase in the composite system.

The present invention provides a method for producing a water-processable n-type conducting polymer, comprising the steps of: a) adding a monomer to a solvent system comprising water in the presence of a catalyst and a base to prepare a reaction solution; b) polymerizing the monomer in the reaction solution to obtain an n-type conductive polymer; c) post-treating the n-type conductive polymer dispersion to obtain a water-processable n-type conductive polymer; The present invention relates to a method comprising:

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a modified single-crystal ternary positive electrode material as well as a preparation method and application thereof. The modified single crystal ternary positive electrode material comprises an inner core, a coating layer 1 and a coating layer 2 which are laminated in sequence, the general formula of the inner core is LixNiaCobMncLpO2 + q, x is more than or equal to 1.00 and less than or equal to 1.20, a is more than or equal to 0.10 and less than or equal to 0.60, b is more than or equal to 0.10 and less than or equal to 0.30, c is more than or equal to 0.10 and less than or equal to 0.30, p is more than or equal to 0.0001 and less than or equal to 0.03, q is more than or equal to 0 and less than or equal to 0.03, and L comprises at least one of Mg, Al, Ti, Zr, Y and Sb; the coating layer 1 comprises a fast ion conductor; and the coating layer 2 comprises a conductive polymer. According to the modified single crystal ternary positive electrode material provided by the invention, the rate capability and the cycle life are both considered while the high capacity is maintained.

The application discloses a method for detecting polychlorinated biphenyl by using an electrochemical aptamer sensor. x The sensor comprises a glassy carbon electrode, a surface of a detection end of the glassy carbon electrode is decorated with an electroactive nanomaterial, the electroactive nanomaterial comprises Ti3C2T 0000001 Nanosheet, a conductive polymer material is embedded in an interlayer structure of the nanosheet and forms a composite nanomaterial, and gold nanoparticles are deposited on a surface of the composite nanomaterial; a capture chain is self-assembled on the electroactive nanomaterial, a specific aptamer probe is combined on the capture chain, a DNA double-stranded structure is formed, and an electroactive label is introduced. In the application, the sensor has the advantages of wide detection range, low detection limit, strong anti-interference ability, good stability and the like, can realize specific detection of polychlorinated biphenyl, has the advantages of low cost, short time consumption, high accuracy, good adaptability and the like, and has important significance for rapid detection of polychlorinated biphenyl.

This invention introduces an electrochromic spiral-coated piezoelectric composite yarn and its preparation method, belonging to the field of functional materials technology. It includes: a silver-plated nylon core yarn and, sequentially disposed outside the silver-plated nylon core yarn, a nanofiber layer, an encapsulation layer, a transparent conductive layer, an electrochromic active layer, an ion gel electrolyte layer, and an ion storage layer. The nanofiber layer is a PVDF / BaTiO3 nanofiber yarn spirally and cross-coated on the surface of the silver-plated nylon core yarn. The transparent conductive layer is formed by curing a PEDOT:PSS conductive polymer dispersion. The electrochromic active layer is tungsten trioxide nanowires uniformly deposited on the transparent conductive layer. The ion storage layer is a Prussian blue nanolayer. This invention solves the problems of poor environmental adaptability, insufficient mechanical durability, and unstable piezoelectric output in existing piezoelectric yarns.

The patent provides a MXene / CC / PEDOT:PSS high-conductivity ink and a preparation method thereof, and further prepares a high-performance flexible micro-supercapacitor through a 3D printing technology.The application takes the conductive polymer PEDOT:PSS as a spacer between MXene nanosheets, effectively prevents the stacking of MXene nanosheets, and provides more conductive paths.The mutual interaction between CC and MXene through hydrogen bonds and ionic bonds promotes the interface bonding force between them, resulting in high yield stress and unique shear thinning behavior.The "soft inside and hard outside" structure of CC improves the mechanical properties of the electrode and provides a certain capacity.The micro-supercapacitor prepared by the 3D printing technology has excellent electrochemical performance due to the synergistic effect of the electrode material and the unique structure, and has great application potential in the field of flexible energy storage.