260 results about "PEDOT:PSS" patented technology

The invention discloses a preparation method of a salt-resistant polyurethane sponge evaporator for a photo-thermal interface, which comprises the following steps: taking polyurethane sponge as a support framework, taking polyvinyl alcohol as a precursor solution, adding carbon black and PEDOT: PSS (poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate)) into the precursor solution as photo-thermal materials, and synthesizing the salt-resistant polyurethane sponge evaporator by an extrusion thermal crosslinking freeze-drying method. According to the obtained evaporator, the excellent photothermal conversion performance of carbon black / PEDOT: PSS and a porous framework structure mainly comprising polyurethane / polyvinyl alcohol are fully utilized, the water absorption, the mechanical performance and the photothermal conversion efficiency of the evaporator are effectively improved, the heat conductivity is reduced, it is guaranteed that salt crystals do not appear inside and on the surface of the evaporator while efficient interface evaporation is achieved, and the service life of the evaporator is prolonged. The device can be widely applied to solar interface evaporation in saline water, actual seawater or high-salinity wastewater so as to obtain clean water resources.

The invention provides a preparation method and application of a quantum dot light-emitting diode based on interface modification, and belongs to the technical field of quantum dot materials. The preparation method comprises the following steps: (1) spin-coating PEDOT: PSS-4083 on ITO (Indium Tin Oxide) to obtain a hole injection layer; (2) spin-coating polyvinyl carbazole on the hole injection layer in the step (1) to obtain a hole transport layer; (3) spin-coating pyridine on the hole transport layer in the step (2) to obtain a modification layer; (4) spin-coating ZnCdS / ZnS quantum dot normal octane on the modification layer in the step (3) to obtain a quantum dot film; and (5) spin-coating an Mg-doped ZnO ethanol solution on the quantum dot film in the step (4), and performing high-vacuum evaporation to obtain the quantum dot light-emitting diode. Compared with an original device, the EQE of the prepared quantum dot light emitting diode is improved by 16.5%, and the highest brightness is improved by 12.5%.

The present invention discloses a VN 0.52 O 0.26 The method of combining nanoparticles with PEDOT:PSS thermoelectric nanocomposite film is used to prepare VN by pyrolysis of urea to generate ammonia and react with NaVO3 at high temperature. 0.52 O 0.26 Nanoparticles, constructing P-type PEDOT:PSS and N-type VN 0.52 O 0.26 The pn junction barrier of the nanoparticle organic-inorganic composite and the energy filtering effect between the nanoparticles and the organic PEDOT interface are used to improve the conductivity, Seebeck coefficient and power factor of the thermoelectric composite film. The organic-inorganic thermoelectric nanocomposite film prepared has a Seebeck coefficient of 62.75μV / K and a power factor of 474.424μWm at 90°C. ‑1 K ‑2 .

The invention belongs to the field of biomedical materials, and discloses a hydrogel patch with piezoelectricity, conductivity and high adhesion and a preparation method and application of the hydrogel patch. Polyvinyl alcohol (PVA) and acrylic acid (AA) serve as polymer frameworks of the hydrogel patch; the invention relates to a nano-zinc oxide / poly (3, 4-ethylenedioxythiophene) / poly (styrenesulfonic acid) (PEDOT: PSS) composite conductive adhesive, which comprises nano-zinc oxide (ZnO) as a piezoelectric material, poly (3, 4-ethylenedioxythiophene)-poly (styrenesulfonic acid) (PEDOT: PSS) as a conductive material, and N-hydroxysuccinimide acrylate (NHS-AA) as an adhesive functional monomer. According to the invention, active ester groups in the N-hydroxysuccinimide acrylate are utilized, so that the patch can quickly form covalent amido bonds with amino groups on the surface of a tissue in a dry state, firm adhesion is realized, local nerve repair can be effectively promoted through a piezoelectric effect, a novel ideal material is provided for disease treatment, and the patch has wide application prospects. Wide clinical application prospects are realized in the field of biological medicines.

The invention relates to the technical field of memristors, and provides a chitosan-based memristor which comprises a substrate, a buffer layer, a composite dielectric layer and a top electrode which are sequentially stacked from bottom to top, the buffer layer is formed by spin-coating a PEDOT: PSS aqueous solution on the substrate and then carrying out heat treatment; the composite dielectric layer is formed by spin-coating the buffer layer with an ultrasonic composite solution formed by a graphene oxide aqueous dispersion and a chitosan acetic acid solution and then carrying out heat treatment. By adopting a collaborative architecture of the chitosan-graphene oxide composite dielectric layer and the PEDOT: PSS buffer layer, the prepared bio-based memristor has the effects of relatively high switching ratio, relatively low operating voltage and good performance stability. Meanwhile, based on stable high and low resistance states of the device, all seven basic logic operations including a NOT gate, an AND gate, an OR gate, a NAND gate, a NOR gate, an XOR gate and an XNOR gate are completely realized on a single bio-based platform, the function accuracy can reach 100%, and an unexpected effect is achieved.

The invention discloses a silver nanowire and polymer composite transparent conductive film and a preparation method thereof, and belongs to the field of conductive films. According to the preparation method disclosed by the invention, hydroxylation treatment is performed on the surface of AgNWs through ultraviolet irradiation induction to generate a large number of-OH groups, and the-OH groups and sulfonic acid groups (-SO3H) in PEDOT: PSS form chemical bonding, so that the contact resistance between the AgNWs and the PEDOT: PSS is remarkably reduced, and a continuous and efficient conductive network is constructed. Meanwhile, the tight coating structure of hydroxylated AgNWs and PEDOT: PSS effectively inhibits oxidation and ion migration of the silver nanowires in a humid and hot environment, and the stability of the transparent conductive film is remarkably improved.

The invention discloses a modified MXene conductive polymer bacterial cellulose composite fiber electrode and a preparation method and application thereof, and belongs to the field of composite conductive super-strong fiber preparation. The preparation method comprises the following steps: mixing K-MXene and a conductive polymer to obtain composite conductive ink; then, the strip-shaped BC hydrogel is crosslinked with composite conductive ink through a hydrogen bond, and K-MXene / PEDOT: PSS-coated BC conductive hydrogel is obtained; secondly, the conductive hydrogel is subjected to a wet state-drafting technology and a wet state-twisting technology, and K-MXene / PEDOT: PSS-BC conductive composite large fibers are obtained; finally, the p-K-MXene / PEDOT: PSS (at) BC composite conductive large fiber electrode is obtained through dip coating of PDMS dispersion liquid and solvent replacement, and the p-K-MXene / PEDOT: PSS (at) BC composite conductive large fiber electrode is obtained. The prepared fiber electrode and commercial yarn can be woven into an intelligent fabric which is used for a self-powered sensor and reliable detection of human body signals.

This invention discloses an electrochemical sensor for neutralizing antibodies applicable to whole blood and its usage method, comprising a foldable drainage region, a reaction region, and an adsorption region. The working electrode of the reaction region is coated with PEDOT:PSS conductive hydrogel material, which is then modified with PEG to immobilize specific biorecognition molecules. This invention's detection device can quickly and efficiently quantify neutralizing antibody concentrations, can be used for whole blood testing, can detect extremely low concentrations, and exhibits high sensitivity and good detection performance.

This invention proposes a patterned PEDOT:PSS hydrogel based on electrochemical pulse deposition and its preparation method. The preparation apparatus includes an electrolytic cell, an electrochemical workstation, a substrate, a conductive layer, and a sacrificial metal layer. The electrolytic cell contains a PEDOT:PSS aqueous solution. The conductive layer is connected to the working electrode of the electrochemical workstation. Under the excitation of the electrochemical workstation, the sacrificial metal layer forms metal cations, which electrostatically adsorb PEDOT:PSS in the PEDOT:PSS aqueous solution, ultimately forming a patterned shape on the conductive layer using the sacrificial metal layer as a template. This invention achieves thickness control of the patterned PEDOT:PSS hydrogel by adjusting various deposition parameters. The preparation process is simple, low-cost, and highly practical, fully realizing the patterning of PEDOT:PSS hydrogels.

The application discloses an electronic skin-oriented conductive silver paste and a preparation method and application thereof, and relates to the technical field of flexible printed electronic materials.The raw materials of the electronic skin-oriented conductive silver paste include flaky silver powder, silver nanoparticles, thermoplastic polyurethane elastomer, acrylic elastomer, PEDOT:PSS microgel dispersion, (3-glycidylpropoxy)trimethoxysilane, polydiallyldimethylammonium chloride, hexanedial modified dopamine copolymer, (3-aminopropyl)triethoxysilane, methacryloyloxypropyltrimethoxysilane, cellulose acetate, modified polyurea thixotropic agent, hydrogenated castor oil, ethylene glycol ether acetate, dibasic acid ester, leveling agent and water.The electronic skin-oriented conductive silver paste has the advantages of good electrical performance, good mechanical-electrical stability, good anti-electromigration and sweat corrosion resistance, and can still maintain dendrite-free and low drift under long-term coupling of sweat and bias, and is suitable for electronic skin.

The application belongs to the technical field of semiconductor photoelectric detection, and particularly relates to a self-powered photoelectric detector based on a Cs2CuBiI6 thin film and a preparation method thereof. 61 The structure is composed of a glass substrate, a PEDOT:PSS conductive polymer layer, a Cs2CuBiI6 thin film layer, a PC The technical scheme disclosed by the application realizes the preparation of a non-lead Cs2CuBiI6 thin film by using a simple preparation method, overcomes the defects of instability and lead toxicity of a traditional perovskite structure, and the prepared photoelectric detector has excellent photoelectric detection performance such as fast response speed, which is of great significance for simplifying the process of a perovskite photoelectric detector, being environment-friendly, and further realizing practical application.

The invention discloses a preparation method of high-toughness and high-conductivity deep eutectic gel. The preparation method comprises the following steps: (1) mixing PVA and PEDOT: PSS solutions with water to obtain a PVA / PP aqueous solution; (2) adding DBSA into the PVA / PP aqueous solution, and mixing to obtain a PVA / PP / DBSA aqueous solution; (3) performing freeze thawing cycle treatment on the PVA / PP / DBSA aqueous solution to obtain PVA / PP / DBSA hydrogel; (4) mixing the ChCl with the Gly to obtain ChCl / Gly DES (Diethylbenzene Sulfonate); and (5) carrying out solvent exchange on the PVA / PP / DBSA hydrogel and ChCl / Gly DES, so as to obtain the PVA / PP / DBSA / DES deep eutectic gel. The raw materials are cheap and easily available, and the preparation method is simple and feasible. The obtained deep eutectic gel has high strength, high toughness, high conductivity and weather-resistant stability, and can be applied to various flexible bioelectronics.

The application relates to the fields of semiconductor light sources and organic photoelectric materials, and particularly relates to a coaxial flexible OLED light-emitting wire and a hole injection material. The hole injection material introduces a phosphoric acid group and a conjugated main chain structure in a dithienothiazine (DITTz) molecular skeleton, maintains excellent charge delocalization and low oxidation potential characteristics of the DITTz, forms a stable interaction with an ITO anode surface through the phosphoric acid group, significantly reduces a hole injection barrier, and improves interface combination. Compared with existing PEDOT:PSS or a carbazole-based phosphoric acid group polymer, the hole injection material has obvious advantages in aspects of a reduced starting voltage, improved light-emitting efficiency, enhanced interface stability, and device bending durability and hygrothermal stability.

The invention relates to a preparation method and application of conductive adhesive hydrogel based on cyclodextrin, required components comprise a water-soluble adhesive, PEDOT: PSS, PVA and a water-soluble ionic conductive agent, and the water-soluble ionic conductive agent adopts one of NaCl, KCl or sodium citrate. The preparation method comprises the following steps: 1, adding the ionized water and the PEDOT: PSS dispersion liquid into a beaker, and uniformly stirring; 2, adding PVA, a water-soluble ionic conductive agent and a water-soluble adhesive into the mixed solution formed in the step 1, and standing to enable PVA particles to absorb water and swell; 3, stirring the mixed solution prepared in the step 2 under a heating condition to uniformly dissolve the components to obtain a precursor mixed solution of the hydrogel; and 4, performing freeze-thaw cycle on the precursor mixed solution obtained in the step 3 to form a stable physical cross-linked network, thereby obtaining the conductive adhesive hydrogel. The precursor mixed solution prepared by the invention has excellent printability, and the hydrogel formed after crosslinking simultaneously shows the characteristics of high conductivity, stable adhesion and low modulus.

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.

The invention belongs to the technical field of biological medicine, and discloses an injectable hydrogel combined reagent, self-curing conductive hydrogel and application thereof. The injectable hydrogel combined reagent provided by the invention comprises a solution A and a solution B, the solution A is a first precursor solution formed by dissolving modified poloxamer PFUDAm and ammonium persulfate in deionized water; the solution B is a second precursor solution formed by dissolving N-isopropylacrylamide NIPAM, ferrous gluconate and PEDOT: PSS in deionized water, after the injectable hydrogel combined reagent is mixed in a duplex injection mode, PFUDAm, poly (N-isopropylacrylamide) and PEDOT: PSS are subjected to an oxidation-reduction reaction of ammonium sulfate and ferrous gluconate to initiate polymerization, and the self-curing conductive hydrogel is constructed. The self-curing conductive hydrogel has controllable curing time, and the self-curing conductive hydrogel has excellent swelling resistance, conductivity and good elasticity and toughness, and is expected to be combined with a cardiac pacemaker to be applied to treatment of arrhythmia.

The invention provides a preparation method of a perovskite precursor solution and an anti-radiation perovskite thin film, and belongs to the technical field of perovskite materials, and the method comprises the following steps: sequentially adding FAI, SnI2, SnF2 and EDAI2 into an usnic acid / alpha-tocopherol solution, carrying out magnetic stirring, then adding 1, 4-divinyl perfluorobutane and AIBN, continuing stirring, carrying out ultrasonic treatment, and filtering to obtain the perovskite precursor solution; and dropwise adding an arginine-PEDOT: PSS solution on the pretreated ITO substrate, carrying out spin coating, annealing treatment and cooling, further dropwise adding a perovskite precursor solution, carrying out spin coating, dropwise adding anhydrous chlorobenzene during spin coating, carrying out annealing treatment in a nitrogen atmosphere after spin coating is completed, and cooling to room temperature to prepare the anti-radiation perovskite thin film. According to the method, the stability of the film under the irradiation condition can be improved while defect and non-radiation compounding can be reduced.

The invention discloses high-modulus and high-conductivity PEDOT: PSS hydrogel as well as a preparation method and application thereof, and belongs to the technical field of flexible conductive hydrogel. The PEDOT: PSS hydrogel is prepared by soaking original PEDOT: PSS hydrogel in an acrylic acid aqueous solution and then performing treatment, and the mass concentration of the acrylic acid aqueous solution is greater than 30wt%. According to the invention, the acrylic acid aqueous solution with the mass concentration of more than 30 wt% is used as a treatment reagent, and a multi-synergistic effect mechanism of removing insulating components, inducing network shrinkage and promoting conductive chain rearrangement can be constructed, so that synchronous and efficient improvement of the energy storage modulus and the conductivity of the PEDOT: PSS hydrogel is effectively achieved; the key problem that the conductivity and the mechanical property are difficult to balance is successfully solved; meanwhile, the PEDOT: PSS hydrogel keeps excellent long-term biocompatibility, a new solution is provided for development of flexible conductive hydrogel in the fields of flexible electronics, biomedical sensing and the like, and the PEDOT: PSS hydrogel has remarkable industrial application potential.

The invention discloses a preparation method of a lithium battery negative electrode material with an optimized specific surface area of spherical graphite, and relates to the technical field of lithium ion batteries. The method comprises the following steps: treating a bimodal particle size graphite raw material, and grading and mixing natural graphite and artificial graphite to construct a core-shell structure; spray drying is combined with gas-phase chambering to form a graded porous structure; a PEDOT: PSS or PVDF-g-PEG conductive polymer solution is adopted for carrying out ultrathin coating; and carbonizing and curing the conductive network at low temperature. Through collaborative design of core-shell structure stability and graded pore channels, the tap density is maintained while the specific surface area is remarkably increased, a continuous conductive network is formed by the conductive polymer coating and a low-temperature carbonization process, and the interface charge transmission efficiency is effectively improved. The prepared negative electrode material has the characteristics of high specific surface area, excellent structural stability and low interface impedance, solves the problem that the high specific surface area is difficult to be compatible with the cycling stability in the traditional process, and is suitable for manufacturing power batteries with high energy density and long cycle life.

This invention discloses a flexible lactic acid sensing patch based on biochar / PEDOT:PSS composite, its preparation method, and its applications. The flexible lactic acid sensing patch comprises, from the inside out, an adhesion and fixation layer, a liquid-permeable protective layer, a conductive hydrogel layer, a lactic acid sensing layer, and a flexible electrode substrate layer. The lactic acid sensing layer is formed by combining biochar material and PEDOT:PSS. The flexible electrode substrate layer integrates a working electrode, a counter electrode, and a reference electrode, wherein the working electrode is directly bonded to the lactic acid sensing layer. The flexible lactic acid sensing patch provided by this invention has the characteristics of flexible structure and good adhesion, and does not require the use of enzyme recognition elements. It also has advantages such as high stability, simple preparation process, and continuous monitoring capability, and can be applied to human tissue metabolic status monitoring, postoperative blood circulation assessment, and exercise physiological monitoring.

This invention discloses an iodine cathode interface conductive polymer slurry, an iodine cathode and its preparation method, and its application in I... ‑ / I2 / I + In the application of positive-valence zinc-iodine batteries, the conductive polymer slurry at the iodine cathode interface is formed by combining an aqueous adhesive and a PEDOT:PSS dispersion. This conductive polymer slurry is uniformly coated onto the surface of the iodine cathode, and after drying, a dense conductive polymer film is formed on the iodine cathode surface. The PEDOT:PSS film of this invention can inhibit polyiodine ion shuttle and I₂ from both physical barrier and chemical adsorption perspectives. + Hydrolysis; when the iodine cathode loading is 10 mg cm⁻¹ ‑2 At that time, the discharge plateau of the zinc-iodine battery was 1.6 V (I 0 / I + ) and 1.2 V(I ‑ / I 0 Its capacity retention rate after 3500 stable cycles is over 91%, effectively improving the performance of the iodine cathode and enhancing the overall performance of the battery; it belongs to the field of battery technology.

The invention relates to the technical field of sensors, in particular to a preparation method and application of a ZIF-8 / PEDOT: PSS composite material and a flexible humidity sensor, and the flexible humidity sensor comprises a flexible substrate, a metal layer interdigital electrode which is subjected to laser photoetching on the substrate, a humidity-sensitive coating which is coated on the metal layer interdigital electrode, and a conductivity measurement external circuit, different from a traditional humidity sensor for measuring the absolute humidity of the environment, the flexible humidity sensor made of the ZIF-8 / PEDOT: PSS composite material can provide a brand-new respiration monitoring means for users in the field of medical treatment and public health by monitoring humidity changes of respiration and different parts of the body. The flexible humidity sensor based on ZIF-8 / PEDOT: PSS realizes great potential in non-contact detection of human body humidity and respiratory health. A result shows that the ZIF-8 / PEDOT: PSS has a very excellent application prospect in a humidity detection material.

The invention discloses a multilayer flexible electromagnetic shielding composite film and a preparation method thereof.The preparation method comprises the steps that firstly, a complex with zinc ions as a metal center and pyrazole as an organic ligand is synthesized and then mixed with metal salt, and after high-temperature pyrolysis, a FeNi-C precursor is obtained; the precursor is blended with sodium alginate and a PEDOT: PSS aqueous solution, and an SPCX composite film is prepared; the preparation method comprises the following steps: preparing silver nanowires through a polyol method, and mixing the silver nanowires with sodium alginate and PEDOT: PSS to prepare an SPAg composite film; carrying out softening treatment on the surface of the SPCX composite film by adopting ethylenediamine tetraacetic acid; and then the composite film is slightly pressed to be combined with the SPAg composite film in a chemical cross-linking mode, and the multi-layer flexible electromagnetic shielding composite film is formed. A continuous, uniform and efficient conductive network is constructed in the composite material. In addition, by changing the metal salt solution used in the post-crosslinking process, the mechanical property and the electromagnetic shielding property of the composite film can be further adjusted.

The invention discloses a construction method of a high-stability interdigital supercapacitor, and the method comprises the steps: firstly designing the interdigital supercapacitor, and obtaining an interdigital conductive substrate through micromachining; then synthesizing a conductive organic frame nano material with good conductivity, and combining with a conductive polymer PEDOT: PSS to construct a composite flexible nano frame composite layer; by optimizing modification conditions, the composite material is modified on an interdigital conductive substrate, and a novel interdigital supercapacitor is prepared. The result shows that the constructed interdigital supercapacitor still keeps high specific capacitance and high stability after tens of thousands of charging and discharging cycles under different current densities. Based on the high-stability interdigital supercapacitor, a platform for promoting the neural stem cells to differentiate into neurons based on in-situ electrical stimulation is subsequently established in the method: electrical stimulation is continuously and stably applied through the interdigital supercapacitor, so that the differentiation speed of the neural stem cells is remarkably increased; and an effective research tool is provided for research of a basic molecular mechanism of neurodegenerative diseases.

The present invention discloses an inverted QLEDs based on a solid phase transfer organic transport layer and its preparation method and application, which belongs to the technical field of light emitting diode preparation. From bottom to top, it includes ITO conductive glass, Zn 1‑x Mg x O electron transport layer, quantum dot light-emitting layer, organic transport layer based on solid phase transfer, hole injection layer and metal anode. The preparation method comprises the following steps: ultrasonically cleaning ITO conductive glass with detergent, deionized water, acetone and isopropyl alcohol respectively; drying the cleaned ITO conductive glass and performing ultraviolet ozone treatment; spin coating Zn on the treated ITO conductive glass 1‑ x Mg x O nanoparticle solution, annealing; taking quantum dot solution and spin coating it on the resultant, annealing; depositing an organic transport layer on the resultant by solid phase transfer method, annealing; spin coating a PEDOT:PSS hole injection layer on the resultant, annealing; and evaporating a metal anode on the resultant.

This invention relates to a PEDOT solution, an electrochemical sensing electrode, and a preparation method thereof, comprising 75-200 parts of a PEDOT:PSS aqueous dispersion, 3-10 parts of an organic solvent, and 0.3-2 parts of a crosslinking agent, wherein the crosslinking agent is a silane coupling agent. Through the synergistic ratio of these components, a composite functional layer is formed on the electrode surface, solving the problems of insufficient interfacial wetting and electro-drift caused by the hydrophobicity of traditional electrode substrates, ensuring stable solid-liquid interfacial contact between the electrode and detection media such as aqueous solutions and sweat. Simultaneously, the three-dimensional network structure constructed by the crosslinking reaction allows the composite functional layer to form a strong chemical bond with the electrode substrate, effectively avoiding problems such as modification layer detachment and swelling. This application replaces traditional electroplating processes, is suitable for integrated products such as wearable sweat patches, avoids problems such as electrolyte corrosion of the substrate and short circuits, and is suitable for the modification needs of embedded, irregularly shaped, and array electrodes.

The invention discloses a preparation method and an application of a PEDOT (poly (3, 4-ethylenedioxythiophene)): PSS (poly (styrene) / MXene / Fe (II)-Cyt) nano composite sensing material. By regulating and controlling the molar ratio of ferric ions (Fe < 3 + >) to L-cysteine, Fe < 3 + > can oxidize sulfydryl of cysteine to form a cystine structure, then the cystine structure and Fe < 2 + > generated in the reaction process form a stable complex, and finally the Fe (II)-Cyt nano material is obtained. The nano material is further compounded with MXene and PEDOT: PSS (poly (3, 4-ethylenedioxythiophene)), so that the PEDOT: PSS / MXene / M-Cyt nano composite sensing material is prepared. The sensing material is simple in preparation process, low in cost and good in stability, has excellent biocompatibility, can be coated on a flexible interdigital electrode to realize in-situ real-time monitoring of ethylene released by plants or ethylene leakage in industrial pipelines, and has a wide application prospect.

An aluminum electrolytic capacitor with good stability comprises a shell, a core package and a rubber plug, and the core package is arranged in the shell in a sealed mode through the rubber plug. A PEDOT: PSS thin film is formed in the core package, and the PEDOT: PSS thin film is doped through 4-bromobenzylamine hydrochloride; the doping weight of the 4-bromobenzylamine hydrochloride in the PEDOT: PSS film is less than 8% of the weight of the PEDOT: PSS. According to the invention, the PEDOT: PSS thin film is treated by 4-bromobenzylamine hydrochloride, so that the electrical conductivity of the weight of PEDOT: PSS is improved, and the internal resistance of the solid aluminum electrolytic capacitor is reduced; and moreover, the acidity enhancement phenomenon caused by moisture absorption of the PEDOT: PSS film is inhibited, so that the stability of the solid aluminum electrolytic capacitor is improved.

The application discloses a polymer composite lithium iron phosphate material and a preparation method thereof, relates to the technical field of lithium iron phosphate positive electrode materials, and comprises the following steps: S1, ultrasonicating bacterial cellulose in a lithium polyacrylate aqueous solution to obtain a fiber dispersion liquid; S2, adding the fiber dispersion liquid into lithium iron phosphate slurry for mixing and dispersing, then adding PEDOT:PSS for crosslinking, and finally performing spray granulation and gradient annealing to obtain the polymer composite lithium iron phosphate material. The polymer coated on the surface of the lithium iron phosphate makes the positive electrode material have more stable conductivity and cycle stability, and solves the problems of discontinuous conductive network, many interface side reactions and high cost in traditional modification.

This invention discloses a pressure-induced heating composite material, comprising: a flexible support layer, which is a PI film; a first triboelectric material layer, which is a CNT-OH / PVDF-HFP composite film, attached to one side of the flexible support layer; a second triboelectric material layer, which is an AgNW / PDMS composite film, attached to the other side of the flexible support layer; a pyramidal microstructure is constructed on the surface of the second triboelectric material layer; and a thermoelectric conversion layer, attached to either the first or second triboelectric material layer. The thermoelectric conversion layer is prepared by combining Bi2Te3 / Sb2Te3 heterojunction nanosheets, PEDOT:PSS hydrogel, and Ti3C2TxMXene, with each component being doped with each other to form a uniform dot-like spatial distribution structure. The material of this invention exhibits high response under low pressure because the pyramidal microstructure increases the contact area change rate by 400% under low pressure (≤5kPa) and achieves a charge density of 1.2–1.5 mC / m², breaking through the high-pressure triggering bottleneck of existing materials.