62 results about "Polystyrene sulfonate" patented technology

The invention discloses an artificial SEI material and a preparation method thereof, an artificial SEI film and an artificial SEI film modified negative electrode. The artificial SEI material is an organic polymer brush (CNF-g-PSSX) prepared by grafting cellulose nanofibers with polystyrene sulfonate. The polymer brush is of a crystal structure and has a firm framework; and the side chain of polystyrene sulfonate has rich-SO3 functional groups which are matched with cations in sulfonate, so that a rapid ion transmission channel is provided, high-current-density circulation can be realized, and good interface contact is ensured. Due to a special molecular topological structure and a multi-component synergistic effect, when the organic polymer brush forms an artificial SEI film, high mechanical strength, high ionic conductivity and low interface impedance can be obtained at the same time, and through strong electrostatic repulsion between a negatively charged-SO3 group and the surface of a negatively charged lithium dendrite tip, the electrochemical performance of the artificial SEI film is improved. An obvious inhibition effect is shown on the continuous growth of dendritic crystals.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

The invention discloses a lithium iron manganese phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion batteries, the lithium iron manganese phosphate positive electrode material at least comprises lithium iron manganese phosphate particles and a coating layer coating the lithium iron manganese phosphate particles; the raw material of the coating layer comprises an aluminum fluoride embedded poly (ethylenedioxythiophene)-lithium polystyrene sulfonate compound. And the coating layer can be used as a physical barrier to form dynamic interface protection, so that dissolution of manganese and erosion of electrolyte are directly inhibited, and side reaction between the electrolyte and the positive electrode material is reduced. Meanwhile, a more flexible transmission channel is provided for lithium ions and electrons, the conductivity of the positive electrode material is enhanced while the transmission efficiency of the lithium ions is improved, and the lithium manganese iron phosphate positive electrode material with stable structure, high rate capability and cycling stability is obtained.

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 provides conductive polymer hydrogel, a preparation method thereof and application of the conductive polymer hydrogel in biological tissues. The conductive polymer hydrogel comprises poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and water, or the conductive polymer hydrogel comprises poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate, an additive component and water, the additive component comprises one or more of a non-conductive polymer and an ionic compound, and the additive component and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate and / or poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate. The polystyrenesulfonate is of a net structure, and the polystyrenesulfonate is of a polystyrenesulfonate structure. The conductive polymer hydrogel has a certain network structure and has better flexibility and conductivity. The conductive polymer hydrogel can meet the wide mechanical-electrical property requirements required by bioelectronic application, and can be effectively used as a biological electrode for epidermal and implantable electrophysiological signal recording by synergistically balancing mechanical compliance and conductivity, and stable and reliable high-signal-to-noise-ratio signals are provided.

This solid electrolytic capacitor (100) includes a capacitor element (170) provided with a first electrode layer (141), a dielectric layer (150), a solid electrolyte layer (163), and a second electrode layer (160) formed on the outer surface of the solid electrolyte layer (163). The solid electrolyte layer (163) is formed of a polymer film containing: a crosslinked polymer obtained through crosslinking of a polymer having a carbonyl group by means of a crosslinking agent including a dihydrazide compound; and a complex formed of polyethylene dioxythiophene and polystyrene sulfonate. The second electrode layer (160) has a conductive polymer film (165) formed in contact with the solid electrolyte layer (163). The solid electrolyte layer (163) is a precoat layer used when forming the conductive polymer film (165) through electrolytic polymerization.

The application discloses a temperature-strain dual-function sensor for extracorporeal circulation system monitoring, and relates to the technical field of flexible electronics and biomedical engineering. The sensor adopts a three-layer stacking structure, and comprises, from top to bottom, a piezoresistive strain response layer based on a silver / graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive film, a thermoplastic polyurethane nanofiber heat insulation isolation layer and a temperature sensitive layer based on a graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive hydrogel. The temperature-strain dual-function sensor for extracorporeal circulation system monitoring prepared by the application exhibits high sensitivity and fast response characteristics in temperature and strain sensing, and simultaneously exhibits excellent cycle stability and long-term reliability under repeated deformation.

Described is a hydrogel having both an ion-conductive region based on an acrylic polymer and an electrically conductive region of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). In addition, described is a hydrogel to which poly(ethylene glycol) (PEG) or poly(ethylene glycol) methyl ether (PEGME) is added to improve the water resistance (or durability) of the hydrogel.

The invention provides a high-molecular polymer as well as a preparation method and application thereof, the preparation method of the high-molecular polymer comprises the following steps: S1, carrying out RAFT polymerization reaction on polycaprolactone and sodium 4-styrenesulfonate to obtain a PCL-b-PSSNa block copolymer; s2, the PCL-b-PSSNa block copolymer and a chain extender are subjected to a chain extension reaction, and the high-molecular polymer is obtained. According to the invention, crystalline polycaprolactone and sodium 4-styrenesulfonate are subjected to RAFT polymerization, a sodium polystyrenesulfonate block with higher glass transition temperature (higher modulus) can be introduced, and the sodium polystyrenesulfonate block can be used as a physical crosslinking point, so that the elastic modulus of the material can be remarkably improved; the material has high load capacity and a wide temperature window while having rapid thermal response, and overcomes the problem of easy instability.

The application relates to the technical field of high polymer material preparation, and particularly discloses a flexible high polymer material with glucose response, a preparation method thereof and application of the flexible high polymer material in preparation of a biosensor. The preparation method of the flexible high polymer material with glucose response comprises the following steps: S1. reacting a prepolymer with a polyhydric alcohol to obtain a copolymer; S2. dissolving the copolymer with an organic solvent, then adding hydroxylated carbon nanotubes, poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate, uniformly stirring, and then performing ultrasonic treatment; after the ultrasonic treatment is completed, the reaction product is poured into a mold, and the flexible high polymer material with glucose response is obtained after solidification. The flexible high polymer material with glucose response has good glucose, pH and temperature multi-response performance, and also has good mechanical properties.

The present application relates to the technical field of electrically strippable adhesive, in particular to an electrically strippable adhesive composition, which comprises a base polymer resin, an intrinsic conductive polymer, an ionic compound, a crosslinking agent and a solvent; the base polymer resin comprises an acrylate copolymer with polar functional groups and a phenoxy resin; the intrinsic conductive polymer is one or more of poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS), polyaniline or polypyrrole. The present application overcomes the defects of the prior art through the synergistic effect of the base polymer resin, the intrinsic conductive polymer and the low content ionic compound, and provides an electrically strippable adhesive composition with high strength, high stability, low voltage fast response and clean stripping, which is particularly suitable for precise manufacturing processes in the fields of semiconductors and displays.

A conducting composition includes a topological polymer (e.g., a polyrotaxane polymer) and poly(3,4-ethylene-dioxy thiophene):polystyrene sulfonate (PEDOT:PSS). Devices may include a conducting layer including the conducting compositions, e.g., a device comprising a conducting layer, wherein the conducting layer includes a polyrotaxane polymer and a PEDOT:PSS array. The devices are useful in bioelectronics, including high-resolution electrophysiological monitoring of deformable tissues and localized neuromodulation for high-precision control of individual muscle activities.

The application discloses a flexible lithium manganate positive pole piece and a preparation method, and belongs to the technical field of lithium ion batteries. The carbon nanofiber membrane with polystyrene sulfonate grafted on the surface and the lithium manganate particles with polystyrene sulfonate adsorbed on the surface are assembled into a filter cake layer in close contact through vacuum filtration, then aniline solution slowly permeates through the filter cake layer and is adsorbed under the condition of no oxidant, so that the aniline monomers are uniformly adsorbed on the polystyrene sulfonate template to form a monomer reaction layer with uniform thickness, and in-situ limited polymerization is carried out, after polymerization and drying, the obtained composite membrane is subjected to gradient heating and hot pressing treatment, rearrangement of polyaniline molecular chains and further compaction at the interface between the carbon fiber and the lithium manganate are realized, and the flexible self-supporting positive pole piece with a positive active film layer free of metal current collectors, a three-dimensional conductive network and a relatively stable conductive state is obtained. The application is suitable for the fields of flexible lithium ion batteries, wearable electronic devices and solid-state lithium batteries.

A method for manufacturing a conductive polymer composite according to an embodiment of the present invention may comprise: a dissolving step for dissolving thermoplastic polyurethane (TPU) powder in a dimethyl sulfoxide (DMSO) organic solvent; a synthetic solution preparation step for preparing a synthetic solution by adding, to the organic solvent, a solution in which poly(3,4-ethylene dioxythiophene polystyrene sulfonate (PEDOT:PSS) and single-walled carbon nanotubes (SWCNTs) are dispersed; a conductive polymer composite extraction step for extracting a conductive polymer composite by evaporating the synthetic solution; and a processing step for processing the conductive polymer composite.

The invention provides a thermoelectric device and a preparation method and application thereof. The preparation method comprises the following steps: providing an electrostatic spinning solution and a conductive solution; the electrostatic spinning solution comprises thermoplastic polyurethane; the conductive liquid comprises a multi-walled carbon nanotube and poly (3, 4-ethylenedioxythiophene): polystyrene sulfonate; performing electrostatic spinning to obtain a fiber membrane; spraying conductive liquid to the surface of the fiber membrane and drying; repeating the steps of electrostatic spinning, spraying and drying to obtain a primary fibrous membrane-conductive filler compound; the primary fiber membrane-conductive filler compound is soaked in conductive liquid, so that the conductive liquid permeates into fiber pores, a continuous three-dimensional conductive network is formed by the conductive liquid and the sprayed conductive layer together, the conductive network is taken out, cleaned and dried, and a fiber membrane-conductive filler polymer is obtained; cutting the fiber membrane-conductive filler compound into a plurality of sub-devices, and connecting the plurality of sub-devices through a conductor; the prepared thermoelectric device can be applied to wearable equipment, and can be applied to multiple scenes such as medical health and motion analysis.

The present invention belongs to the field of conductive polymers, and specifically relates to a new type of flexible conductive polymer film electrode material and a preparation method thereof. The flexible conductive polymer film of the present invention is composed of PEDOT:PSS and a polar small molecule containing both a carbon-carbon double bond and a polar functional group; the polar functional group includes a hydroxyl group, a carboxyl group or an amino group; the weight percentage of the polar small molecule in the simplified flexible conductive polymer film is 15%-90%. The present invention achieves a simultaneous improvement in the electrical conductivity and mechanical properties of the conductive polymer film by only mixing one component into poly(3,4-ethylenedioxythiophene):polystyrene sulfonate, and can significantly improve the problem of easy leakage of small molecule additives in traditional flexible conductive polymer films.

Provided is an electrically conductive elastomer with high stretchability and high durability. A method of synthesizing an electrically conductive elastomer includes (a) preparing a eutectic solvent by mixing quaternary ammonium salt and organic acid, and (b) adding and blending the eutectic solvent with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), a photocuring agent, and a crosslinker and performing photopolymerization.

One aspect of the present invention is concerned with a composition for the manufacture of a hydrogel material. The composition has N-(3-Sulfopropyl)-N-methacroyloxyethyl-N,N-dimethylammonium betaine (DMAPS) serving as a backbone of the hydrogel material, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) serving as a conductive component, and at least one crosslinking agent.

An inverted polymer photovoltaic cell (or solar cell) includes an anode;a first anodic interlayer (buffer layer) based on PEDOT:PSS [poly(3,4-ethylenedioxythiophene):polystyrene sulfonate];an active layer having at least one photoactive organic polymer as an electron donor and at least one electron acceptor organic compound;a cathodic interlayer (buffer layer);and a cathode. A second anodic interlayer (buffer layer) includes at least one heteropolyacid and, optionally, at least one amino compound is placed between the first anodic interlayer (buffer layer) and the active layer.The inverted polymer photovoltaic cell (or solar cell) shows good values of photoelectric conversion efficiency (power conversion efficiency—PCE) (η) and, in particular, a good level of adhesion between the different layers, more specifically between the active layer and the first anodic interlayer (buffer layer).

A solar cell includes a first layer including a silica material, a second layer including an indium tin oxide material, and a third layer including a chlorophyll-doped poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS@Chl) material. The solar cell further includes a fourth layer including a silver material, and a fifth layer including a silica material. The PEDOT:PSS@Chl material includes chlorophyll in an amount of 4 to 12 percent by weight (wt. %) based on a total weight of the PEDOT:PSS@Chl material. The PEDOT:PSS@Chl material has a surface area of 500 to 550 meter square per gram (m2 / g). The third layer has a thickness of 30 to 70 nanometer (nm).

The invention provides a carbon fiber structure energy storage integrated composite material and a preparation method thereof, and belongs to the technical field of composite materials and electrochemical energy storage. The composite material is of a layered sandwich structure and sequentially comprises at least one carbon fiber negative electrode layer, a solid electrolyte diaphragm layer and at least one positive electrode layer from top to bottom, the carbon fiber negative electrode layer is composed of carbon fibers and a conductive polymer coating; a conductive polymer in the conductive polymer coating comprises one or more of poly (3, 4-ethylenedioxythiophene)-polystyrene sulfonate, polyaniline and polypyrrole. Through interface modification of the conductive polymer and introduction of the high-ionic-conductivity electrolyte, consideration of mechanical properties and electrochemical properties of the carbon fiber composite material is achieved, and the carbon fiber composite material has excellent thermal stability and safety and can be used for structural components needing light bearing and energy storage function integration, such as spacecrafts, unmanned aerial vehicles and electric carriers.

The invention discloses a PP-T / CMF-based composite phase change material with electromagnetic wave absorption performance, and the PP-T / CMF-based composite phase change material is prepared from the following raw materials: polyethylene glycol PEG 6000, poly-3, 4-ethylenedioxythiophene: polystyrene sulfonate PP, tetrabutyl titanate TBT and melamine foam MF; mF is used as a framework, and a T / MF foam matrix is obtained through hydrothermal reaction; calcining and carbonizing to obtain a T / CMF matrix; then, PP is subjected to vacuum impregnation and freeze drying, and a PP-T / CMF foam matrix is obtained; and finally, adsorbing PEG 6000 through vacuum. PEG 6000 is used as a heat storage medium; mF is a phase change material carrier and a supporting framework; pP is a conducting medium; tBT is used as a precursor; and ammonia water is used as a pH value regulator. The PP-T / CMF is of a three-dimensional network structure, and TiO2 nanoparticles are loaded on the surface of the PP-T / The preparation method comprises the following steps: 1, preparing T / CMF; 2, preparation of the PP-T / CMF; and 3, preparation of the PP-T / CMF / PEG. The material can be used as a phase-change material and a wave-absorbing material at the same time.

According to the present disclosure, a conductive polymer composite and a strain gauge are provided. The conductive polymer composite includes poly(3,4-ethylenedioxythiophene):polystyrene sulfonate and waterborne polyurethane, and the conductive polymer composite is homogeneous. The strain gauge includes a substrate and a strain sensitive layer. The substrate has a surface, and the strain sensitive layer is connected to the surface of the substrate. The strain sensitive layer is made of the aforementioned conductive polymer composite, and the strain sensitive layer has at least four separations arranged in a staggered way and forms bow-like structures, which makes the strain sensitive layer deform more in a first direction than a second direction perpendicular to the first direction.

The invention relates to a process for the preparation of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) particles comprising at least the following steps: a) providing a mixture comprising poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate in at least an aqueous solvent; b) forming one or more PEDOT:PSS droplets by introducing the mixture from process step a) into an organic solvent A, wherein the aqueous PEDOT:PSS mixture forms the inside of the droplet and the organic solvent A forms the outside of the droplet; c) contacting the PEDOT:PSS droplets obtained from process step b) with a coagulation solution comprising a coagulation agent and at least one further solvent B, said coagulation solution having a density greater than the density of said organic solvent A and less than the density of the aqueous mixture of poly(3,4-ethylenedioxythiophene) and polystylene sulfonate; and d) coagulating the PEDOT:PSS droplets to PEDOT:PSS particles. Furthermore, the invention discloses spherical PEDOT:PSS particles which do not require further mechanical coagulation of the substance and the use of such particles, for example as cell culture microcarriers or as a suspended electrode.

This invention discloses a lithium manganese iron phosphate (LFP) cathode material and its preparation method, belonging to the field of lithium-ion battery technology. The LFP cathode material comprises at least LFP particles and a coating layer covering the LFP particles. The coating layer is made from an aluminum fluoride-integrated polyethylene thiophene-lithium polystyrene sulfonate compound. The coating layer acts as a physical barrier, forming a dynamic interface protection that directly inhibits manganese leaching and electrolyte erosion, reducing side reactions between the electrolyte and the cathode material. Simultaneously, it provides a more flexible transport channel for lithium ions and electrons, improving lithium ion transport efficiency while enhancing the conductivity of the cathode material, resulting in a structurally stable LFP cathode material with high rate performance and cycle stability.

Disclosed is a coating composition that includes at least one silane or functionalized silane, and at least one electroactive or electroconductive polymer, and optionally a solvent. In particular, the coating composition comprises a mixture of octadecyltrichlorosilane and poly(3,4-ethylenedioxythiophene):polystyrene sulfonate.

An example of a multi-functional agent for three-dimensional (3D) printing includes carboxylated carbon nanotubes present in an amount ranging from about 0.5 wt % active to about 5.0 wt % active based on a total weight of the multi-functional agent; poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) present in an amount ranging from about 0.1 wt % active to about 0.8 wt % active based on the total weight of the multi-functional agent; a co-solvent; and a balance of water.

The invention provides static conductive digital direct-injection ink and a preparation method thereof, and relates to the technical field of ink-jet printing. Comprising the following components in parts by weight: 8-15 parts of poly (3, 4-ethylenedioxythiophene) / polystyrene sulfonate; 0.3 to 1 part of chitosan quaternary ammonium salt; 10 to 20 parts of soft type waterborne polyurethane; 10-23 parts of water-based pigment concentrated slurry; and 4-10 parts of an auxiliary agent. Wherein the auxiliary agent comprises the following components in parts by weight: 4-7 parts of a humectant; 0.4 to 1.0 part of a non-ionic surface active agent; 0.1 to 0.5 part of a defoaming agent; 0.1 to 0.5 part of a preservative; and 0.1 to 0.5 part of a thickening agent. The conductive digital direct-injection ink disclosed by the invention is low in surface resistance, can effectively eliminate static electricity generated by friction between a fabric and equipment in a printing process, and can effectively improve printing quality and hand feeling.

The technology is based on a conducting, ferromagnetic ink made from, in an aqueous suspension: conducting nanopolymers, ferromagnetic nanoparticles, an adhesion promoter and optionally, a surfactant and / or stabilizer. The ink is used to form reversible physical and electrical connections between e.g., rigid and flexible devices. In some aspects, the conducting nanopolymers are PEDOT:PSS (poly(3,4-ethylenedioxythiophene) polystyrene sulfonate) nanopolymers and the magnetic nanoparticles are iron oxide nanoparticles. The ink, which may be magnetic, is used to form solid, flexible, ferromagnetic conducting designs or nodes which may also be magnetic. The flexible, ferromagnetic conducting designs or nodes are used to form reversible magnetic electrical connections with devices such as potentiostats and data telemetry devices.

The application provides a lithium manganese iron phosphate positive electrode material and a preparation method thereof. The lithium manganese iron phosphate positive electrode material comprises a positive electrode material core and a coating layer coated on the surface of the positive electrode material core; the chemical general formula of the positive electrode material core is LiMn x Fe 1‑x PO4, wherein 0.5<=x<=0.8; the coating layer comprises an inner coating layer and an outer coating layer which are sequentially stacked, and the inner coating layer is arranged in contact with the positive electrode material core; the inner coating layer comprises a carbon layer; and the outer coating layer comprises poly (3,4-ethylenedioxythiophene) : polystyrene sulfonate and silver nanowires. The silver nanowires can improve the conductivity of the lithium manganese iron phosphate positive electrode material; and the poly (3,4-ethylenedioxythiophene) : polystyrene sulfonate has flexibility and can relieve the volume expansion of the lithium manganese iron phosphate active material during the charging and discharging process. The lithium manganese iron phosphate positive electrode material has the performance advantages of low resistance, high capacity, high compaction and high cycle.