120results about How to "Improved interface contact" patented technology

The invention relates to the field of solar cells, and discloses a buried interface modified trans-perovskite solar cell and a preparation method thereof. The trans-perovskite solar cell structurally comprises a substrate, a conductive layer, a hole transport layer, a perovskite light absorption layer, an electron transport layer and a metal counter electrode which are sequentially layered, the hole transport layer adopts a hole transport material [4-(3, 6-dimethyl-9H-carbazole-9-yl) butyl] phosphoric acid (Me-4PACz), and the hole transport layer adopts a hole transport material [4-(3, 6-dimethyl-9H-carbazole-9-yl) butyl] phosphoric acid (Me-4PACz). According to bottom-buried interface modification provided by the invention, a hole transport material Me-4PACz is modified by adopting a (2-phenethyl) phosphonic acid small molecule material, the modified Me-4PACz hole transport layer has high perovskite layer coverage rate, the preparation process is simple, the efficiency of the assembled solar cell is high, the stability is obviously improved, and the commercial application value is very good.

The invention relates to a preparation method of a self-assembled monomolecular layer in a perovskite cell, and belongs to the technical field of solar cells, and the preparation method comprises the following steps: S1, preparing an SAM layer; step S1.1, soaking the conductive glass substrate into the preheated SAM first precursor solution; step S1.2, quickly soaking in a second SAM precursor solution; s1.3, taking out and removing the residual solvent to obtain an SAM layer; step S2, annealing; s3, preparing a perovskite light absorption layer and other functional layers; and depositing a perovskite light absorption layer and other functional layers on the SAM layer in sequence, and finally preparing a complete perovskite solar cell. According to the method, the appropriate high-boiling-point solvent is selected to prepare the SAM precursor solution, then the conductive substrate is rapidly soaked in the SAM precursor solution under the condition that the high temperature is kept, SAM molecules are rapidly self-assembled within seconds at the high temperature, the self-assembled molecular layer is more uniform and compact, the perovskite buried bottom interface has fewer defects, the interface contact is better, and the performance of the conductive substrate is improved. And the efficiency and the stability of the perovskite cell are obviously improved.

The invention discloses a thermoplastic polyurethane elastomer flexible composite solid electrolyte as well as a preparation method and application thereof. The flexible composite solid electrolyte is prepared from the following raw materials in percentage by weight: 1wt%-30wt% of solute salt; 5 wt%-50 wt% of an inorganic filler; 40 wt% to 90 wt% of a polymer matrix; the invention also specifically discloses a preparation method of the flexible composite solid electrolyte and an application of the flexible composite solid electrolyte in a lithium metal battery. The prepared composite solid electrolyte has excellent mechanical properties, a symmetrical lithium battery assembled based on the composite solid electrolyte can realize stable circulation, and the prepared composite solid electrolyte has relatively high flexibility and relatively high ionic conductivity at the same time, so that the composite solid electrolyte is expected to be applied to wearable electronic equipment.

The invention relates to the technical field of adhesives, and particularly discloses an electrogenerated viscosity-reducing adhesive as well as a preparation method and application thereof. The electrogenerated viscosity-reducing glue is prepared from the following raw materials in parts by weight: 100 to 150 parts of polyacrylate, 30 to 50 parts of polyvinyl alcohol, 20 to 40 parts of functional monomer, 1 to 5 parts of conductive agent, 2 to 6 parts of alkenyl-containing ionic liquid, 1 to 5 parts of lithium salt, 1 to 5 parts of tackifier, 1 to 2 parts of dispersant, 0.1 to 2 parts of initiator and 60 to 100 parts of organic solvent, and the conductive agent is obtained by synergistically modifying hydroxylated carbon nanotubes with 2-thiophenecarboxylic acid and 2-picolinic acid. The electrogenerated viscosity-reducing adhesive is applied to the electrogenerated viscosity-reducing adhesive tape, and the obtained adhesive tape is excellent in peel strength and shear strength, high in power-on viscosity-reducing efficiency, free of adhesive residue during peeling, reusable and wide in application prospect.

The invention relates to a solid electrolyte, a composite positive electrode, a preparation method of the composite positive electrode and an ultra-fast charging type all-solid-state battery, and belongs to the technical field of solid-state batteries. The formula 1 is Li < x > Al < alpha > M < beta > X < y > O < z >, X is halogen, M is a trivalent element except Al, the ratio of x to (alpha + beta) is (1-5): 1, the ratio of alpha to (alpha + beta) is (0.5-1), and the ratio of x to z is (1.25-5). The solid electrolyte provided by the invention is low in glass transition temperature and melting point, has viscoelasticity and relatively high ionic conductivity, and can be fused and cast together with a positive electrode material to form a composite positive electrode at a relatively low temperature, and relatively good interface contact (surface-to-surface contact) can be formed between the positive electrode and the solid electrolyte only by applying relatively small external force; according to the all-solid-state battery, the problem that rigid contact between the solid electrolyte and the positive electrode in the existing all-solid-state battery causes poor ion transmission network and further affects the battery performance is solved, the ion transmission efficiency and the charge-discharge rate performance of the solid-state battery are improved, and rapid and ultrafast charging can be realized.

The invention discloses a high-first-efficiency dry pre-lithiation silicon-based negative electrode and a preparation method thereof. Comprising the following steps: (1) mixing a negative electrode active material and a pre-lithiation reagent at a high speed to obtain a dry-process pre-lithiated silicon-based negative electrode material; and (2) mixing and fiberizing the pre-lithiated silicon-based negative electrode material, a binder and a conductive agent, pressing the fiberized material into a fiberized film through high-temperature rolling, and finally compounding the obtained fiberized film with a current collector through hot rolling to form the dry-method electrode plate. On one hand, the physical contact between a lithiation reagent and a silicon material can be adjusted in a high-speed mixing process in a dry pre-lithiation manner, and pre-lithiation is induced by utilizing the pressure generated by a contact point; and on the other hand, the pre-lithiation reagent is added in the material mixing process, so that the initial coulombic efficiency of the negative plate can be improved by compensating the loss of active lithium in the reaction process.

The invention discloses a sulfide solid electrolyte based on ionic liquid electrowetting modification and application thereof. The preparation method of the electrolyte comprises the following steps: preparing a sulfide electrolyte into an electrolyte sheet, and coating the surface of the electrolyte sheet with an ionic liquid to form an ionic liquid film, thereby obtaining the electrolyte sheet containing the ionic liquid film; and placing the sulfide solid electrolyte between electrode plates which are arranged in parallel to assemble a parallel-plate capacitor, and applying a direct-current signal to carry out electrowetting treatment, thereby obtaining the sulfide solid electrolyte based on ionic liquid electrowetting. The specific ionic liquid is introduced into the interface of the sulfide solid electrolyte and the negative electrode for electrowetting treatment, so that the interface contact angle is effectively reduced, the interface wettability is improved, the interface impedance is reduced, the electrochemical performance of the all-solid-state battery is improved, and the cycle life of the all-solid-state battery is prolonged. The method particularly focuses on the use of imidazole and pyridine ionic liquids, and selects the appropriate ionic liquid for the lithium metal negative electrode material to realize the optimal interface modification effect.

The invention relates to the technical field of lithium ion batteries, and discloses a reference electrode, a preparation method thereof and a lithium ion semi-solid battery. The reference electrode comprises a base material as well as a polyether polymer and a lithium salt which wrap the base material, wherein the polyether polymer comprises a structural unit A provided by a monomer a as shown in a formula (a) and a structural unit B provided by a monomer b with a molecular formula as shown in a formula (b); r1, R2, R3 and R4 are the same or different and are respectively selected from one or more of H, halogenated alkyl, cyano, ester group and substituted or unsubstituted carboxyl; m is an integer of 2-5, and n is an integer of 1-3; the reference electrode can well solve the problem that monitoring potential deviates from a true value due to polarization, and has a certain buffering effect on expansion in a high-expansion system test, so that lithium metal is prevented from falling off; # imgabs0 # formula (a); and CmH2mOn, formula (b).

The invention discloses modified garnet ceramic powder, a PVDF (polyvinylidene fluoride)-based composite solid electrolyte, a solid-state battery as well as a preparation method and application of the solid-state battery. The modified garnet ceramic powder comprises ceramic powder and a modified interface layer coating the outer side of the ceramic powder, the thickness of the modified interface layer is 4-8 nm; the ceramic powder is garnet ceramic electrolyte powder; the modified interface layer is a polymer film polymerized on the surface of the ceramic powder; and the polymer film is made of polycyanoethyl cellulose. According to the modified garnet ceramic powder, cyanoethyl cellulose and a garnet ceramic electrolyte are coordinated and polymerized, so that the interface structure of garnet and a PVDF-based polymer is regulated and controlled, side reactions are inhibited, interface contact is better, electrochemical stability is achieved, ion transmission is faster, and the comprehensive performance of the composite electrolyte is improved.

The invention relates to the technical field of lithium batteries, and particularly discloses a silicon-based negative electrode active material, a preparation method thereof and an all-solid-state lithium ion battery. Comprising a silicon-carbon material and a phosphorus-sulfur coating layer, the phosphorus-sulfur coating layer coats the silicon carbon material; in the silicon-based negative electrode active material, the content of a silicon element is 50-65%, the content of a carbon element is 30-45%, the content of a phosphorus element is 1-10%, and the content of a sulfur element is 0.1-3%. According to the silicon-based negative electrode active material prepared by the preparation method disclosed by the invention, the surface of the silicon carbon material is uniformly coated with the phosphorus elementary substance by utilizing the sulfur elementary substance, so that good interface contact between a sulfide electrolyte on the negative electrode side of a sulfide all-solid-state battery and a silicon-based negative electrode is realized, and the lithium ion transmission kinetics on the negative electrode side is improved; and the rate capability of the silicon-based negative electrode active material is improved.

The invention provides a composite solid electrolyte membrane, a preparation method thereof and a solid-state battery, and relates to the field of energy storage. The preparation method of the composite solid electrolyte membrane comprises the following steps: spraying a sulfide solid electrolyte raw material on the surface of one side of a first substrate layer to prepare an electrolyte membrane precursor; laminating a second base material layer on the surface of one side, where the sulfide solid electrolyte is sprayed, of the first base material layer, and spraying halide solid electrolyte powder on the surface of one side, away from the first base material layer, of the second base material layer to prepare an electrolyte membrane intermediate; and pressing the electrolyte membrane intermediate to prepare the composite solid electrolyte membrane. Wherein the first base material layer and the second base material layer are both of a porous structure. On one hand, the second base material layer can isolate contact between air and the sulfide solid electrolyte to prevent decomposition of the sulfide solid electrolyte, and on the other hand, the sulfide solid electrolyte enters the second base material layer to improve the interface contact problem with the halide solid electrolyte layer.

The invention discloses a preparation method of a hydride-coated sulfide composite solid electrolyte based on mechanical grinding. The preparation method comprises the following steps: (1) mixing two solid electrolytes Li10GeP2S12 and LiBH4 to form a primary composite electrolyte; and (2) carrying out mechanical grinding on the composite electrolyte in a glove box under the protection of an argon atmosphere so as to form the composite solid electrolyte with LiBH4 coated with Li10GeP2S12. The invention also discloses the hydride-coated sulfide composite solid electrolyte prepared by the preparation method and an application of the hydride-coated sulfide composite solid electrolyte. According to the preparation method, the surfaces of sulfide particles can be effectively coated with the hydride, and the original electrochemical performance of the composite solid electrolyte is maintained to the greatest extent, so that the problems that the sulfide generates adverse side reaction with an electrode in the charging and discharging process and is easy to decompose under high voltage and the like can be greatly reduced; the assembled lithium metal symmetric battery and the all-solid-state lithium metal battery both show excellent electrochemical performance and relatively long cycle life.

The invention relates to the field of perovskite solar cell preparation, in particular to a double-passivator perovskite solar cell and a preparation method thereof, and the solar cell adopts a mixture of one or more of phenethyl amine chloride phenethylamine iodine and n-butylammonium iodide and m-fluorophenethylamine iodine as a passivator to passivate a perovskite light absorption layer. According to the invention, through the synergistic passivation of the double passivators of the perovskite light absorption layer, more types of defects can be passivated by using different ions or related groups, so that effective passivation is realized, and the output power of the solar cell is improved. Wherein m-F-PEAI not only can assist other passivators in passivating defects on the surface of the perovskite material, reduce non-radiative recombination and improve the stability of the perovskite material, but also can improve interface contact between the perovskite absorption layer and other functional layers, reduce interface recombination and improve charge transfer efficiency. The problems that an existing single passivator is single in passivation defect type, various defects cannot be effectively passivated, the passivation efficiency is poor, and the battery efficiency is low are solved.

The invention belongs to the technical field of electrochemical energy storage materials, and particularly relates to a titanium-oxygen cluster electrolyte additive as well as a preparation method and application thereof. The titanium-oxygen cluster and the polycaprolactone derivative are jointly placed in an organic solvent and subjected to an exchange reaction, a modified titanium-oxygen cluster solution is obtained, and after the solvent is volatilized, the titanium-oxygen cluster electrolyte additive is obtained. The preparation method provided by the invention is simple to operate and easy to popularize, and the titanium-oxygen cluster electrolyte additive can be oxidized and decomposed in situ on the surface of an electrode in the battery cycle process to form a TiO2-rich inert interface protection layer only by being mixed into the electrolyte. The titanium-oxygen cluster electrolyte additive can act on a positive electrode interface and a negative electrode interface at the same time, and a formed TiO2 interface protection layer can inhibit surface reactivity, prevent surface reconstruction and impedance accumulation, protect a positive electrode material structure from being damaged, inhibit non-uniform growth of negative electrode lithium dendrites and improve the service life of the lithium ion battery. And the cycling stability and safety of the lithium metal battery under high voltage are effectively improved.

The invention relates to the technical field of electrode materials, in particular to a composite silicon negative electrode material suitable for a sulfide-based all-solid-state battery and a preparation method and application thereof, and the preparation method comprises the following steps: (1) generating a metal organic framework material on the surface of a nano silicon material through an in-situ growth method; (2) carbonizing the metal organic framework material on the surface of the nano silicon material through calcination treatment to form a nitrogen-doped porous carbon material, so as to obtain a Si-NC material; and (3) generating a sulfide solid electrolyte on the surface of the Si-NC material through an in-situ growth method to obtain the Si-NC-SE composite silicon negative electrode material. According to the invention, the surface of the Si material is coated with the nitrogen-doped porous carbon material (NC) through an in-situ generation technology, and the sulfide solid electrolyte is generated in situ, so that the conductivity of the composite silicon negative electrode material and the cycling stability of the sulfide-based all-solid-state battery adopting the composite silicon negative electrode material are improved.

The invention discloses a high-density perovskite thin film, a preparation method and application of the high-density perovskite thin film in X-ray detection. The preparation method of the high-density perovskite thin film comprises the following steps: coating an electron transport layer with a precursor stock solution containing a perovskite material and an auxiliary crystallization additive, and then drying. The perovskite material is selected from one or more of FACs2AgBiBr6, FAMACsPbBr3, CsPbBr3, MAPbBr3, Cs2AgBiBr6 and MAPbI3, and the perovskite material is selected from one or more of FACs2AgBiBr6, FAMACsPbBr3, CsPbBr3 and MAPbI3; the auxiliary crystallization additive is selected from thiourea, biuret, ammonium chloride and the like; the precursor solvent is selected from dimethyl sulfoxide, dimethyl formamide and the like. By adding the auxiliary crystallization additive, homogeneous crystallization of perovskite is promoted, and the prepared film has high compactness, low defect rate, flat surface and controllable thickness, and is suitable for large-area devices.

The invention belongs to the field of electrochemistry, and discloses a nitro functionalized Zn-Mo bimetal organic framework solid electrolyte and a preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing Zn-Mo bimetal organic frameworks MOFs with nitro functional groups through a reflux method, blending the Zn-Mo bimetal organic frameworks MOFs with a lithium salt and a polymer to obtain viscous slurry, pouring the viscous slurry on a glass plate to cure the viscous slurry, standing, and carrying out vacuum drying at 60 DEG C to obtain the nitro functional Zn-Mo bimetal organic framework solid electrolyte. The preparation method is simple and easy to operate, and the electrochemical stability and thermal stability of the battery can be effectively enhanced; the lithium ion transference number of the prepared diaphragm is up to 0.70, the assembled lithium iron phosphate battery is 120 mAh g <-1 > under the rated capacitance of 1C, the capacity retention ratio is close to 95%, and the lithium iron phosphate battery shows good cycling stability and multiplying power.

The invention provides a preparation method of a composite solid electrolyte coated positive electrode material. According to the invention, the silicon coupling agent is coated on the solid electrolyte, and a reticular retaining layer containing organic silicon is formed on the surface of the solid electrolyte, so that the stability of a material interface is effectively stabilized, the electrolyte is prevented from corroding an electrode material, and the rate capability and the cycling stability of a lithium-rich material are greatly improved. Then a cationic polymer is selected as a base membrane to be assembled into two layers of hybrid membranes to coat the outermost layer of the solid electrolyte, and then the crown ether lithium salt complex is introduced into the surface of the phospholipid / cationic polymer hybrid membrane, so that the occurrence of side reactions on the surface of an electrode is effectively inhibited, the structure of an active material is stabilized, and meanwhile, the thermal stability of the membrane is improved; and finally, the surface of the positive electrode material is coated with the composite solid electrolyte.

The invention discloses a hole transport material based on a novel anchoring group and a preparation method and application thereof. The chemical structural formula of the hole transport material based on the novel anchoring group is as shown in formula I: # imgabs0 # (formula I), R group is at least one of # imgabs1 #, # imgabs2 #, # imgabs3 #, # imgabs4 #, # imgabs5 #, # imgabs6 # and # imgabs7 #, n is an integer, and n is larger than or equal to 2 and smaller than or equal to 6. According to the hole transport material based on the novel anchoring group, the structure of the anchoring group is optimized, and the photoelectric conversion efficiency is excellent after the hole transport material is applied to a perovskite solar cell.

The invention discloses a composite positive electrode for a rate type solid-state battery, a preparation method and the battery, and belongs to the technical field of lithium batteries. The preparation method comprises the following steps: selecting solid electrolyte slurry for dewatering treatment, and standing to obtain dewatered solid electrolyte slurry; adding 1-5wt% of fluorine-containing polymer, and heating to obtain a mixed solution; performing ultrasonic stirring treatment on the mixed solution to obtain dehydrofluorination surface coated solid electrolyte slurry; selecting positive electrode slurry, adding 1-5wt% of a cross-linkable polyethylenic bond ether-containing monomer, and carrying out high-speed stirring and vacuumizing defoaming treatment to obtain surface cross-linkable pretreated positive electrode slurry; taking 2-5wt% of the dehydrofluorination surface coated solid electrolyte slurry, adding the dehydrofluorination surface coated solid electrolyte slurry into surface crosslinkable pretreatment positive electrode slurry, and stirring at high temperature to obtain composite positive electrode slurry; and S6, coating and cutting the composite positive electrode slurry to obtain the composite positive electrode. The preparation method is simple in process, short in time consumption and low in cost.

The invention discloses a perovskite cell transmission layer and a preparation method and application thereof, and belongs to the technical field of perovskite cells, and the method comprises the steps: firstly forming a NiOx thin film layer on a substrate through a magnetron sputtering technology, then introducing a hydroxyl group on the surface of the NiOx thin film layer through electrochemical treatment, then coating the NiOx thin film layer with a NiOx nano-particle layer, and finally preparing the perovskite cell transmission layer. The preparation method comprises the following steps: preparing a NiOx thin film layer, coating Meo-4PACZ small molecules through a spin coating process to obtain a closely arranged Meo-4PACZ small molecule layer, and inserting a NiOx nano-particle layer between the NiOx thin film layer and the Meo-4PACZ small molecule layer, so that the interface contact between a transmission layer and a perovskite layer is remarkably improved, and the photoelectric conversion efficiency and the stability of the perovskite cell are improved. Through simple electrochemical treatment and a nano intercalation technology, the distribution state of the Meo-4PACZ micromolecular layer on the surface of the substrate is effectively improved, the photoelectric conversion efficiency and the stability of the cell are improved, and a powerful guarantee is provided for efficient and stable operation of the perovskite cell.

The invention relates to a composite positive electrode active material and a preparation method thereof, a positive electrode and an all-solid-state battery in the technical field of lithium battery production. The composite positive electrode active material is of a core-shell structure, the core material comprises a ternary positive electrode material or a lithium-rich manganese-based positive electrode material, and the shell layer comprises LiNbO2F. A shell layer of fluoride LiNbO2F is formed on the surface of the ternary positive electrode material or the lithium-rich manganese-based positive electrode material, so that the high-voltage stability of the composite positive electrode active material can be effectively improved, the cycle performance of the all-solid-state battery can be effectively improved, on the other hand, the solid-solid contact between the positive electrode and a solid electrolyte membrane can be effectively improved by coating LiNbO2F, and the cycle performance of the all-solid-state battery can be improved. And meanwhile, the polarization of the battery is reduced, and the internal resistance of the battery is effectively reduced.

The invention relates to a slurry prepared from a sulfide electrolyte, a cosolvent, a binder and a lithium salt and a manufacturing method for simultaneously applying the slurry to a solid-state battery. The invention mainly aims to provide all-solid-state battery slurry with high ion transmission and low interface impedance. In the patent, the following slurry is provided to solve the problem: the cosolvent-binder slurry with good compatibility with the sulfide electrolyte, the cosolvent contains a first solvent and a second solvent, the first solvent is a non-polar or weakly polar solvent, and the second solvent is a polar solvent with large steric hindrance; the adhesive is a rubber type adhesive; and the lithium salt is an organic lithium salt.

The invention provides a gel battery cell as well as a preparation method and application thereof, and relates to the technical field of secondary batteries. Specifically, the gel cell comprises a positive electrode, a negative electrode and a gel polymer electrolyte, and the gel polymer electrolyte comprises a polymer and an electrolyte; wherein the polymer is prepared by carrying out in-situ polymerization on an electron-deficient double-bond monomer and a cross-linking agent on the surface of the negative electrode, and the electron-deficient double-bond monomer is an acrylate compound containing a specific functional group. The polymer protection layer is formed on the surface of the negative electrode through the in-situ anionic polymerization reaction, and the polymer further reacts with the negative electrode to form the stable inorganic SEI film layer, so that the battery rate capability is improved while the interface stability of the electrolyte and the negative electrode is improved; the electrolyte is fixed in a polymer network by a gel network formed by the gel polymer electrolyte, so that the side reaction of an interface is reduced, the service life of a battery cell is prolonged, and the gel polymer electrolyte has a good application prospect.

The present invention relates to the technical field of secondary batteries, and in particular to a solid electrolyte, a composite electrolyte and a secondary battery. It comprises at least one of the polymers shown in structural formulas I and II; wherein R is selected from H, a C1-C3 alkyl group or a C1-C3 fluoroalkyl group; m is an integer of 1-1000, and n is an integer of 5-2000. The secondary battery based on the solid electrolyte provided by the present invention has high cycle stability and high energy density, and can inhibit the growth of lithium dendrites and the shuttling effect of polysulfides.

The invention relates to the field of sodium ion batteries, in particular to a composite sodium ion battery solid electrolyte and a preparation method thereof, which are used for solving the problems of low ionic conductivity, poor interfacial compatibility and poor chemical stability of the existing solid electrolyte. According to the preparation method, the high-performance polymer is used as a main raw material, the dispersed and modified carbon nanotubes are added into the high-performance polymer, the advantages of all the components are fully played, the ionic conductivity of the solid electrolyte is effectively improved, the electrochemical performance of the sodium-ion battery is effectively improved, and the sodium-ion battery has excellent chemical stability; compared with the prior art, the all-solid-state sodium-ion battery has the advantages that the cycle stability and safety of the all-solid-state sodium-ion battery are remarkably improved, the service life is prolonged, the potential safety hazards of volatile, explosion and the like of the traditional liquid electrolyte are avoided, and the preparation method is simple, feasible, easy to operate, low in cost and beneficial to large-scale commercial application.

The utility model relates to the technical field of battery manufacturing, and discloses an electrode assembly which comprises a first pole piece, a second pole piece, a first diaphragm, a second diaphragm and a supporting assembly, when the electrode assembly works, the battery cell body expands, and the first supporting layer attached to the inner wall surface of the accommodating space supports the battery cell body, so that expansion and displacement of the battery cell body towards the accommodating space are inhibited, interface contact is improved, and lithium precipitation is improved; the second supporting layer is arranged in the first supporting layer, and the elastic modulus of the second supporting layer is smaller than that of the first supporting layer, so that the first supporting layer can contract towards the interior of the first supporting layer under a relatively high pressure to adapt to relatively high expansion of the battery cell body, and interface contact is guaranteed; therefore, the normal use of the electrode assembly at the end of the battery cell circulation is ensured.

The invention discloses a light-emitting device, a preparation method thereof and a display device. According to the light-emitting device, the first electron transport layer is formed through the sol-gel method, and the electronic functional layer comprising the first electron transport layer and the second electron transport layer is formed, so that the electron mobility of the electronic functional layer can be improved, and the interface contact performance can be improved; therefore, the composite efficiency and luminous efficiency of the light-emitting device are improved, and the service life of the light-emitting device is prolonged.

The application discloses a kind of solid electrolyte material and its preparation method, positive pole piece, solid electrolyte film and full solid battery, it is related to solid battery field;Method comprises: lithium lanthanum zirconium oxygen base solid electrolyte is dispersed in first solvent, and electrolyte dispersion liquid is made;Acidic pH regulator is added to the electrolyte dispersion liquid, and the pH of the electrolyte dispersion liquid is adjusted to 7~8, and neutral dispersion liquid is obtained;Orthosilicate is added to the neutral dispersion liquid and mixed to obtain dispersion solution;During mixing process, polysiloxane is formed by the reaction of orthosilicate, and polysiloxane is coated on the surface of lithium lanthanum zirconium oxygen base solid electrolyte;The dispersion solution is subjected to electrolyte separation and drying treatment to obtain a solid electrolyte material.The application aims to improve the surface properties of lithium lanthanum zirconium oxygen base solid electrolyte, so that it can build good interface contact with other inorganic materials.

The present application relates to a kind of based on carbonized wood natural structure dopamine electrochemical sensor and its preparation method and application, the working electrode of the electrochemical sensor is modified with carbonized wood-ZnO nanowire-ZIF-8.The electrochemical sensor of the present application uses carbonized wood as substrate, after cutting carbonized wood whole piece, using conductive carbon paste is pasted on working electrode, while ensuring conductivity, also retain the three-dimensional structure of nanomaterial not be destroyed, guarantee the performance of sensor, with good application prospect.