82 results about "Polystyrene sulfonate" patented technology

It is disclosed new conducting and stretchable hydrogels and “one-pot” process to making them from natural and eco-friendly components, including gelatin, chitosan, and glycerol. Various conducting materials, such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), thermally reduced graphene (TRG), or MXene are introduced in the hydrogels to enhance their conductivity. The resulting conducting hydrogels exhibit remarkable robustness, do not require crosslinking agent, and possess a unique thermo-reversible property, simplifying the fabrication process and ensuring enhanced long-term stability. Moreover, their fabrication is sustainable, employing environmental-friendly materials and processes, while retaining their skin-friendly characteristics. It is also disclosed hydrogel electrodes that were tested for ECG signal acquisition and outperformed the commercial electrodes. The hydrogel-based electrodes deliver high-quality ECG signals, boasting a superior signal-to-noise ratio (SNR) and remarkable resilience against interference and motion artifacts, compared to their commercial AgCl counterparts.

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 a modified carbon fiber, a carbon fiber composite material and a preparation method and application thereof, relates to the technical field of carbon fiber surface modification, and solves the problems that in the prior art, a carbon fiber modification method is single, and the damage condition of the carbon fiber composite material cannot be monitored in real time. The preparation method comprises the following steps: immersing desized carbon fiber cloth into conductive filler dispersion liquid, and drying to obtain conductive filler modified carbon fiber cloth; immersing the conductive filler modified carbon fiber cloth into a poly (3, 4-ethylenedioxythiophene) / polystyrene sulfonate electrolyte for electrophoretic deposition; taking the conductive filler modified carbon fiber cloth as a negative electrode and a graphite plate as a positive electrode, and performing vacuum drying after deposition to obtain conductive polymer nanoparticle deposited carbon fibers; and preparing the carbon fiber composite material from the modified carbon fiber and epoxy resin. The synergistic effect of the conductive filler and the conductive polymer enhances the acting force between the carbon fiber and the resin, thereby enhancing the mechanical properties and damage detection capability of the material. The method can be applied to the field of damage detection.

The invention discloses gelatin / PVA (Polyvinyl Alcohol)-based double-network structure hydrogel, a flexible hydrogel electrode, a hydrogel-TENG sensor and a preparation method. The gelatin / polyvinyl alcohol-based double-network structure hydrogel with high flexibility, transparency, adhesion, self-healing capability, degradability and biocompatibility is prepared by introducing functional components including glycerol, sodium chloride, citric acid and sodium citrate into gelatin and polyvinyl alcohol. According to the application, poly (3, 4-ethylenedioxythiophene)-polystyrene sulfonate, graphene and cobalt nano-porous carbon are respectively added into gelatin / polyvinyl alcohol-based hydrogel with a double-network structure, so that a flexible hydrogel electrode and a hydrogel-triboelectric sensor charge sensitive layer are respectively obtained; and the hydrogel-based flexible non-contact triboelectric sensor with biological friendliness is finally prepared by combining the hydrogel-based flexible non-contact triboelectric sensor with biological friendliness. The hydrogel-triboelectric sensor is expected to play a greater role in the fields of intelligent medical treatment, flexible electronic equipment, human-computer interaction and the like in the future.

The invention discloses a preparation method of a zinc metal negative electrode with an interface coating, which comprises the following steps: adding biomass activated carbon into deionized water, uniformly stirring to obtain a biomass activated carbon dispersion liquid, then adding a poly (3, 4-ethylenedioxythiophene) / polystyrene sulfonate aqueous solution and a cosolvent to obtain a mixed solution, cleaning and drying a zinc foil, and drying to obtain the zinc metal negative electrode with the interface coating. And uniformly coating the mixed solution on the surface of the zinc foil, and drying to obtain the zinc foil. Compared with the prior art, the surface of the zinc metal negative electrode is coated with the activated carbon coated PEDOT: PSS composite film interface coating, the biomass activated carbon has a hierarchical porous structure and a high specific surface area, a large number of active sites are provided for Zn < 2 + >, and enough space is provided for growth of Zn < 2 + > dendritic crystals; the nitrogen-containing functional group in the biomass activated carbon can also improve the conductivity of the electrode material and adjust the transportation and deposition of Zn < 2 + >. The zinc metal negative electrode has good cycle stability, and the preparation process is clean and environment-friendly.

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 invention relates to the technical field of polymer nano composite materials, and particularly discloses a preparation method of high-sensitivity anti-freezing composite hydrogel based on multiple synergistic effects and application of the high-sensitivity anti-freezing composite hydrogel in the field of flexible sensing. According to the method, a blending system of cellulose nanofibers (CNF) and 3, 4-ethylenedioxythiophene-polystyrene sulfonate (EDOT: PSS) is innovatively adopted as a conductive reinforcement phase, in-situ polymerization reaction is induced through a redox initiation system, and nanocellulose / PEDOT: PSS composite dispersion liquid is constructed; and further carrying out free radical copolymerization reaction with an acrylamide (AM) monomer and a lithium chloride (LiCl) antifreeze agent to form the composite hydrogel with an interpenetrating network structure. Wherein a multi-hydrogen bond cross-linked network is formed between the CNF and a polymer matrix through rich hydroxyl groups on the surface of the CNF, so that the mechanical strength of the hydrogel is macroscopically improved; a PEDOT conductive chain constructs a continuous conductive path in a three-dimensional network, so that the conductivity of the hydrogel is enhanced; liCl destroys ice crystal growth kinetics through hydration, the freezing point of the system is reduced to-40 DEG C or below, and meanwhile, the LiCl and a CNF-PAM matrix generate ion-dipole interaction to synergistically inhibit the phase separation phenomenon in a low-temperature environment. The hydrogel has excellent mechanical adaptability, wide temperature range stability and rapid strain response characteristics, and can be widely applied to flexible electronic devices, biomedical sensing and intelligent wearable equipment in extreme environments.

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 discloses a preparation and use method of a co-reactant-free anti-pollution electrochemical luminescence sensor for detecting cadmium ions in grains, which is characterized in that the oxygen evolution reaction activity of porphyrin, the anti-pollution capability and conductivity of poly (3, 4-ethyldioxythiophene)-polystyrene sulfonate chitosan hydrogel and the luminescence stability of luminol are utilized to detect the cadmium ions in the grains. According to the recognition effect of cadmium ions on aptamers and the signal amplification strategy of a DNA walker, a non-co-reactant anti-pollution electrochemical luminescence sensor for detecting the cadmium ions in the grains in an on-off mode is constructed. The sensor disclosed by the invention can be used for judging whether the detected grain contains target ions or not according to the change of the electrochemical luminescence peak value of the cadmium ions in a detection result. The method has the advantages that the sensor is low in cost, simple in detection operation, free of co-reactants and high in pollution resistance; the cadmium heavy metal can be qualitatively and quantitatively measured; the method has high sensitivity and low detection limit, and provides a thought for detection of other ions and small molecular substances.

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.

The invention belongs to the field of injectable conductive hydrogel, and discloses high-stability injectable conductive nano composite hydrogel and a preparation method thereof. The method comprises the following steps: pre-polymerizing a dopamine monomer by adopting a nano clay dispersion liquid in a weakly alkaline oxygen-containing environment to form a polydopamine functionalized PDA-LAP nanosheet, and introducing the polydopamine functionalized PDA-LAP nanosheet into dopamine grafted gelatin and a conductive high-molecular polymer poly (3, 4-ethylenedithiophene) / polystyrene sulfonate; the injectable conductive nano composite hydrogel GPLP is constructed based on the non-covalent bond supramolecular interaction. The GPLP hydrogel prepared by the invention has excellent shear thinning, self-repairing, tissue adhesion, stability, conductivity and biocompatibility, and has a huge application prospect in the fields of electrical stimulation therapy, tissue engineering and regenerative medicine.

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 novel electrode and associated method of manufacturing said novel electrode comprising a porous structure having absorbed polystyrene sulfonate (PSS), a self-assembled polypyrole (PPy) layer adjacent to the PSS absorbed porous structure, a self-assembled polyaniline (PANI) layer adjacent to the PPy layer, an electrochemically deposited PANI layer adjacent to the PPy layer and an electrochemically deposited PANI-dichalcogenide layer adjacent to the electrochemically deposited PANI layer. A supercapacitor and associated method of manufacturing a supercapacitor comprising a first novel electrode and a second novel electrode separated by a polyvinyl gel and a porous separator.

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.

Provided herein are high purity betaine products and methods of making the same. In some cases, provided herein are methods of recovering betaine from sugar beet molasses by using ion exchange chromatographic method with a salt of a polystyrene sulfonate cation exchange resin cross-coupled with divinyl benzene moiety. Also provided herein are methods of producing free-flowing betaine using specialized drying techniques. Additionally provided herein are betaine-poor products and polyphenol rich products, along with methods of preparing the same.

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.

The invention relates to conductive polymer compositions and conductive polymer films comprising poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and a dopant. The invention further relates to electronic components comprising such conductive polymer films. The invention further relates to methods for producing such electronic components.

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).