311results about How to "Improved interface contact" patented technology

A primary electrochemical cell, and a method for making the same, relies upon a jellyroll electrode with a positive electrode material deposited on a conductive carrier having partially uncoated portion wherein electrochemically active material is coated on only one side of the carrier in order to achieve superior performance in comparison to a cell having no such uncoated portion. The partially uncoated portion is oriented along a longitudinal axis of the jellyroll. The positive electrode material is preferably iron disulfide, whereas the negative electrode comprises lithium or a lithium alloy.

An electrochemical cell, particularly an electrochemical cell having a container with a positive polarity. In one embodiment, the cell is a primary cell that includes an electrode assembly having a lithium negative electrode and a positive electrode, preferably comprising iron disulfide. The cell is provided with a spiral wound electrode assembly with a portion of the positive electrode contacting the container. The positive electrode current collector contacts the container in one embodiment. The negative electrode includes an electrically conductive member that electrically contacts a cover of the cell and provides the cover with a negative polarity. In a preferred embodiment, the electrically conductive member makes pressure contact with a portion of the cell cover. A method of manufacturing such a cell is also provided.

A method of forming battery grids or plates that includes the step of applying a lead alloy coating to a continuous strip of interconnected battery grids formed from a lead alloy grid material is disclosed. The battery grids may be formed by a continuous battery grid making process such as strip expansion, strip punching, or continuous grid casting. In one version of the method, the grid wires of a continuous strip of battery grids produced by a punching process are immersed in a melt of the lead alloy coating. In another version of the method, the grid wires of a continuous strip of battery grids produced by a punching process are deformed such that the grid wires have a cross-section other than the rectangular cross-section produced by the punching process and the strip of interconnected grids is immersed in a melt of the lead alloy coating. The method increases the cycle life of a battery.

The present invention discloses an inorganic-organic nano composite solid electrolyte membrane and a preparation method and application thereof. The composite solid electrolyte is a novel inorganic-organic nanocomposite combining the respective advantages of inorganic ceramic solid electrolyte and organic polymer electrolyte and is composed of a negative electrode protective layer, a support layerand a positive electrode interface layer. The support layer plays a supporting role, and the main component of the negative electrode protective layer is the inorganic solid electrolyte with good mechanical properties, which can effectively inhibit the growth of lithium dendrite; and the positive electrode interface layer is mainly composed of organic polymer electrolyte with good flexibility, ensures good contact with active materials and provides a continuous ion transport channel. In the present invention, the composite solid electrolyte with good interface compatibility is prepared by coating on both sides of the support layer, and the process is simple and efficient. The composite solid electrolyte can effectively inhibit dendritic crystal and reduces interface resistance so that a solid lithium metal battery has higher energy density and longer cycle life.

The present invention provides a sensor apparatus based on 2D films or 3D assemblies of cubic nanoparticles capped with an organic coating. The apparatus is used to determine the composition and preferably measure the concentration of volatile and non-volatile compounds in a sample, with very high sensitivity. Methods for use of the apparatus in applications such as diagnosis of disease, food quality and environmental control are disclosed.

The invention relates to a solid oxide fuel cell, in particular to a composite anode of the solid oxide fuel cell and a preparation method thereof. According to weight percentage, the weight composition of the composite anode comprises 30 to 69.9 percent of NiO, 0.1 to 35 percent of rare earth materials and 30 to 69.9 percent of zirconia YSZ with stable yttrium oxide. The composite anode of the solid oxide fuel cell is compounded by adding the rare earth materials to the traditional anode of nickel oxide and zirconia with stable yttrium oxide, and the rare earth materials are added to the anode so as to improve the performance of the anode; the composite anode has the advantages of even distribution of electrode structure, tight interface contact between nickel and YSZ, low polarization impedance, high activity, etc., thus improving the output performance of the cell. The novel composite anode can be applied to flat type, tube type and flat tube type solid oxide fuel cells.

The invention relates to preparation and application of an organic-inorganic composite solid-state electrolyte, and relates to the technical field of a lithium ion battery electrolyte. The organic-inorganic composite solid-state electrolyte is prepared by selecting an isocyanate compound having rigid characteristic, a flexible chain segment compound capable of complexing and dissociating with lithium ions, inorganic nanoparticles, a conductive lithium salt and an organic solvent and adding a tin catalyst for crosslinking and curing. With the isocyanate compound, the mechanical property and thethermal stability of the composite solid-state electrolyte can be improved; by the flexible chain segment compound and the inorganic nanoparticles, the ion conductivity, the ion transfer number and the wide electrochemical window of the composite solid-state electrolyte can be improved, the charge-discharge performance of the lithium ion battery is improved, and the interface contact of the solid-state lithium ion battery is improved; and the organic-inorganic composite solid-state electrolyte has the advantages of excellent interface stability, wide electrochemical window, wide working temperature range, high ion conductivity and versatile shapes and is applicable to a lithium ion polymer battery.

The invention provides an electrolyte / electrode interface integrated construction technology of an all-solid-state lithium battery. According to the electrolyte / electrode interface integrated construction technology, a polymer electrolyte layer is prepared on a positive electrode material layer in situ; the interface contact between the positive electrode material layer and the electrolyte layer is improved and the interface impedance is reduced, so that the rate performance and the circulating performance of the battery are improved. A construction process of the all-solid-state lithium battery is extremely simplified, the cost is reduced and the interface contact is optimized; meanwhile, the electrical conductivity and the electrochemical stability of polymer electrolyte are improved.

The invention provides an oxide ceramic composite solid electrolyte and a preparation method and application thereof. The oxide ceramic composite solid electrolyte comprises the following components:20wt.% to 50wt.% tantalum-doped garnet type oxide ceramics, 30wt.% to 60wt.% polymer electrolyte, 10wt.% to 30wt.% lithium salt and 5wt.% to 20wt.% of fluorine-containing imidazole ionic liquid. The preparation method of the oxide ceramic composite solid electrolyte includes a preparation step, a sintering step and a mixing step, wherein the preparation step includes the operations of weighing a lithium source, La2O3, ZrO2 and Ta2O5, and adding the lithium source, La2O3, ZrO2 and Ta2O5 together with isopropanol into a ball milling tank for ball milling; the sintering step includes the operations of removing isopropanol from the material obtained after ball milling, performing pre-sintering, grinding again, and performing secondary sintering to obtain oxide ceramics; and the mixing step includes the operations of adding the tantalum-doped garnet type oxide ceramics, the polymer electrolyte, the lithium salt and the ionic liquid into an organic solvent, uniformly dispersing and pouring into a mold, and then obtaining the oxide ceramic composite electrolyte after the organic solvent is volatilized.

In order to obtain an electrolyte membrane with high electrochemical stability, the invention provides a preparation method of an all-solid-state fluorine-containing polymer electrolyte membrane, which belongs to the technical field of lithium ion batteries. The preparation method comprises the following steps: step I, adding 5 to 50 parts of fluorine-containing vinyl monomer, 40 to 80 parts of polyether monomer, and 0 to 3 parts of polyethylene glycol methyl acrylate monomer into 100 to 300 parts of solvent, continuously introducing nitrogen, stirring at a rotation speed of 100 to 800 r / min,adding 0.05 to 1.00 part of initiator, reacting for 5 to 48 hours at 60 to 110 DEG C, purifying to obtain a polymer A; step II, adding 30 to 80 parts of polymer A, 5 to 20 parts of lithium salt, and 0to 20 parts of filler and auxiliary into 100 to 300 parts of solvent, stirring at the rotation speed of 100 to 800 r / min in dry nitrogen atmosphere, stirring for 1 to 10 hours, adding 0 to 2.00 partsof hydroxyl cross-linking agent into a mixed system, uniformly smearing a mixed solution onto a special mold, and reacting for 6 to 24 hours at 60 to 100 DEG C in the nitrogen atmosphere of a vacuumdrying box; and step III, after the reaction is ended, drying for 30 to 60 hours at 90 to 98 DEG C in the nitrogen atmosphere, so as to obtain the all-solid-state fluorine-containing polymer electrolyte membrane.

The invention discloses a high-transmissivity flexible transparent conductive film and a preparation method thereof. The high-transmissivity flexible transparent conductive film is characterized in that a film system of the transparent conductive film is in a multi-film layer structure made of ITO / SiO2 / SiO2 / substrate material / SiO2 / SiO2 or SiO2 / ITO / SiO2 / SiO2 / substrate material / SiO2 / SiO2; main materials ITO are In2O3 and SnO2 and metals of In and Sn, wherein the mass percentage of Sn and In elements in the ITO is 78.9-85.4; the mass ratio of the Sn element to the In element is (40-49):(60-51); and the film thickness range is 5-30 nm. The film has firm formation, favorable conductivity and visible light transparency and can be applied to the fields of touch screen liquid crystal display screens, electroluminescent displays, solar batteries, thin film transistors, organic and inorganic semiconductor lasers and heat-insulating and energy-saving glass.

The embodiments of the present invention provide a Ge-based NMOS device structure and a method for fabricating the same. By using the method, double dielectric layers of germanium oxide (GeO2) and metal oxide are deposited between the source / drain region and the substrate. The present invention not only reduces the electron Schottky barrier height of metal / Ge contact, but also improves the current switching ratio of the Ge-based Schottky and therefore, it will improve the performance of the Ge-based Schottky NMOS transistor. In addition, the fabrication process is very easy and completely compatible with the silicon CMOS process. As compared with conventional fabrication method, the Ge-based NMOS device structure and the fabrication method in the present invention can easily and effectively improve the performance of the Ge-based Schottky NMOS transistor.

The invention discloses a preparation method of an organic-inorganic hybridization perovskite solar battery in a plane structure. The preparation method comprises the steps of selection and pretreatment of a transparent conduction substrate, magnetron sputtering of an n-type metal oxide layer or pulse laser preparation, preparation of an organic metal perovskite structure light absorption layer by a normal-pressure gas phase assistance solution method, preparation of a hole conduction layer structure, preparation of a metal alloy back electrode and the like. The method overcomes the problems of discontinuity, insufficient density, pinholes and the like of an n-type metal oxide film, an intermediate phase, pinholes, impure phases and the like of hydration organic metal halogen in a perovskite light absorption layer material, metal particle aggregation of the pure metal back electrode, layering of a hole layer and the like. The solar battery prepared by the method is high in efficiency, low in price, simple in technology, good in repeatability and suitable for mass production.

Methods of forming an electrically-conductive mesoporous carbon structure with interconnected pores or highly interconnected pores, and the resulting structures are described. The structure is formed by providing a mesoporous template, filling the mesopores with an organic precursor, polymerizing the organic precursor, pyrolyzing the polymerized organic precursor, and etching away the template.

The invention provides a preparation method of a positive pole piece containing a positive electrode material coated by an electricity and lithium conducting composite material, and belongs to the technical field of lithium-ion batteries. The preparation method comprises the steps of uniformly stirring a vinyl sulfonic acid monomer, a cross-linking agent, an initiator and a solvent, then adding apositive electrode material, removing the solvent after impregnation, reacting for 10h at a temperature of 90 DEG C to obtain a positive electrode material coated by a cross-linked polymer; preparinga mixed solution by lithium salt and a low-boiling-point solvent, adding the positive electrode material coated by the cross-linked polymer, removing the low-boiling-point solvent until sulfonate or sulfonic acid cations in a coating layer of the positive electrode material is / are converted into lithium sulfonate structure to obtain a positive electrode material coated by a lithium sulfonate cross-linked polymer electrolyte; and uniformly mixing the positive electrode material coated by the lithium sulfonate cross-linked polymer electrolyte, a binder, a lithium conducting material and a conductive agent, and then forming a positive pole piece after coating and drying. The positive electrode material has lithium ion and electricity conducting properties, and improves the performances of thelithium-ion batteries.

The invention relates to a preparation method and application of a composite solid electrolyte based on a metal organic framework / ionic liquid. The preparation method comprises the following steps: preparing a novel composite filler based on a metal organic framework / ionic liquid, uniformly stirring the composite filler, a polymer matrix and a lithium salt in an organic solvent, pouring the mixture on a template, and carrying out blade coating to form a film, thereby obtaining the composite solid electrolyte. The preparation method has the advantages that the ionic conductivity of the solid-state electrolyte can be effectively improved, and the lithium dendritic crystal inhibition capability is improved; and in an assembled all-solid-state lithium battery, relatively good long cycle performance and rate capability are shown, wide production and application of the all-solid-state battery are facilitated, and the all-solid-state battery has a wide application prospect.

A solar cell includes an electrode and a porous film formed on the electrode and containing metallic oxide particles. The metallic oxide particles have a mean particle diameter of 5 nm-14 nm.

The invention relates to a preparation method of an all-solid-state polymer electrolyte and an all-solid-state polymer battery. The preparation steps of the electrolyte are as follows: polymerizing apolycarbonate monomer with a carboxyl or hydroxyl polycarbonate monomer to obtain a polymer A; Adding polyether monomer, polyethylene glycol propylene monomer and functional polymer into solvent, adding lithium salt, initiator, selectively adding auxiliary agent and functional filler, and carrying out initiation reaction to obtain polymer B; Adding polymer A and polymer B into solvent and selectively adding carboxyl crosslinking agent to uniformly mix to obtain polymer mixing system; The hydroxyl crosslinking agent is added into the polymer mixing system and uniformly mixed, the obtained mixedliquid is uniformly coated on a mold, and the crosslinking reaction is carried out under an inert gas atmosphere in a vacuum drying box; At that end of the reaction, the polymer electrolyte membraneis vacuum dry in an inert gas atmosphere to obtain an all-solid polymer electrolyte membrane. The solid polymer electrolyte of the invention has good compatibility and mechanical strength and high room temperature ionic conductivity.

A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2-x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≤x≤0.4. The external component contains a plastic deformable material and has a conductivity of about 10-7 S / cm to about 10-5 S / cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.

The invention relates to a method for manufacturing a steel-based particle reinforced composite anti-wear piece, which can solve the problems of over-high cost, low density, uneven distribution of reinforced particles and low interface bonding strength of the steel-based particle reinforced composite anti-wear piece manufactured in the prior art. The method comprises the following steps of: 1, preparing a viscous flow state carrier by using a carrier material; 2, uniformly blending the pretreated reinforced particles into the viscous flow state carrier, and puffing or curing to form a prefabricated body of which the shape and the size are adaptive to those of the anti-wear piece; 3, feeding the prefabricated body into a mould cavity, and pouring liquid steel into a pressure chamber; 4, pressurizing and filling, and wrapping the reinforced particles into the steel liquid when the carrier is gasified and disappears; and 5, maintaining the pressure until the liquid steel is completely solidified to obtain the anti-wear piece of which the inside contains anti-wear particles and the appearance is the same as that of the mould. In the manufacturing method, a preparation process is simple and rapid, the reinforced particles are firmly combined with the steel, the internal structure is compact, the cost is low, and the wearing resistance is high.

The invention discloses a metal oxide thin film transistor with a top gate structure and a manufacturing method thereof. The thin film transistor comprises a substrate, an active layer, an insulating layer, a gate, a source and a drain, wherein the active layer is arranged on the substrate; the source is arranged at one end of the upper side of the active layer; the drain is arranged at the other end of the upper side of the active layer; the insulating layer is arranged in the middle of the upper side of the active layer; the gate is arranged on the insulating layer; a metallization layer is arranged between the active layer and the source; a metallization layer is also arranged between the active layer and the drain; and the active layer has a composite film structure and sequentially comprises an oxygen-poor metal oxide film layer and an oxygen-enriched metal oxide film layer from bottom to top. The active layer is made into the composite film layer through the same material and different processes, and the contact resistance in a source / drain electrode contact region is reduced through a metallization method; and the insulating layer is manufactured by employing an optimized sputtering process, and the plasma is prevented from damaging a channel active layer. Through the annealing treatment, the high-performance metal oxide thin film transistor with the top gate structure is obtained.

The invention provides a preparation method of a germanium-based Schottky N-type field effect transistor, belonging to the technical field of technical manufacturing of ultra large scale integrations (ULSI). In the preparation method, a high-k medium thin layer is formed among a germanium substrate, a metal source and a metal drain. On one hand, the thin layer can prevent an electron wave function in metal from introducing an MIGS (Metal Induction Gap Strip) interface state into a semiconductor forbidden band and can passivate a dangling bond of a germanium interface; and on the other hand, an insulating medium layer is very thin and electrons can freely pass through the insulating medium layer basically, so that the parasitic resistances of the source and the drain cannot be increased remarkably. By adopting the method, the Fermi level pinning effect can be wakened, the Fermi level is close to the conduction band position of germanium, and the electronic barrier is lowered, therefore, the electric current on-off ratio of the germanium-based Schottky transistor is increased, and the performance of an NMOS (Negative Channel Metal Oxide Semiconductor) device is improved.

The invention belongs to the field of equipment for measuring human body impedance and particularly relates to a flexible electrode for measuring muscle impedance and a preparation method thereof. The flexible electrode for measuring muscle impedance comprises an insulating flexible substrate, at least one pair of exciting electrode plates, at least one pair of measuring electrode plates, surface modification layers, metal leads, metal lead connectors and a polymer protective film. The exciting electrode plates and the measuring electrode plates are arranged to form an electrode array, the electrode array, the metal leads and the metal lead connectors are arranged on the insulating flexible substrate, the surface modification layers cover all the electrode plates, and the face, provided with the electrode array, of the insulating flexible substrate is covered with the polymer protective film. According to the electrode, measuring errors caused by contact interface impedance can be effectively reduced through the insulating flexible substrate and the interface modification layers, no wound or pain is generated, operation is easy and convenient, repeatability is achieved, and the electrode is suitable for being popularized.

The invention discloses a self-driven wide-spectral-response silicon-based hybrid heterojunction photoelectric sensor and a preparation method therefor. The photoelectric sensor comprises a metal back electrode, an N type silicon substrate, an N type silicon nanowire array, an organic polymer semiconductor thin film and a sensor positive electrode, wherein the hybrid photoelectric sensor is characterized in that the N type silicon nanowire array and the organic polymer semiconductor thin film form three-dimensional heterojunction contact, so that the transmission path of photo-generated carriers is effectively shortened; the separation efficiency is improved; a surface / interface composite effect is reduced through interface alkylation processing; the silicon-based micro-nano structure is taken as the main light absorption layer and the generation and transmission layers for the photo-generated carriers as well; and a P type organic semiconductor thin film is processed to be used as a hole transport layer. The photoelectric sensor provided by the invention has the characteristics of self powering, wide spectral response, low cost large-area preparation, high photoelectric response speed and the like.

The invention relates to the technical field of solid-state lithium batteries, and particularly provides a composite solid-state electrolyte and a preparation method thereof, a solid-state lithium battery and a preparation method thereof. The preparation method comprises the following steps of dissolving at least one polymer of polycaprolactone and a polycaprolactone derivative and a lithium saltin an organic solvent to obtain a first solution; adding garnet oxide into the first solution, and uniformly mixing to obtain a second solution; and casting and drying the second solution to obtain the composite solid electrolyte. The preparation method disclosed by the invention has the characteristics of simple process, low energy consumption, no pollution, low price and the like; more importantly, the obtained composite electrolyte has the characteristics of high ionic conductivity, electrochemical window greater than 4.5 V, high ion mobility, small interface resistance, good mechanical properties and the like.

The invention belongs to the technical field of solid oxide fuel cells, and discloses an anti-carbon metal-supported solid oxide fuel cell and a preparation method thereof. The anti-carbon metal-supported solid oxide fuel cell comprises a porous catalytic reforming layer, a porous metal supporting layer, a porous anode functional layer, a dense electrolyte layer and a porous cathode layer which are sequentially and tightly combined; wherein the porous catalytic reforming layer comprises a Ni-M alloy and an oxygen storage-water absorbing oxide; the porous metal supporting layer comprises a Ni-Malloy and MgO; and the porous anode functional layer comprises a Ni-M alloy and a fluorite structural oxide or comprises a Ni-M alloy and a (ionic conductive) perovskite structural oxide. The invention further discloses the preparation method of the corresponding cell. When hydrocarbons are used as fuel, the anti-carbon metal-supported solid oxide fuel cell can operate steadily in a long term inthe hydrocarbon fuel, and the fuel cell has low preparation process cost, is suitable for large-area single cells and scale production and manufacturing, and has broad application prospects.

The invention relates to an organic photovoltaic battery with a cesium acetate cathode modification layer and a preparation method thereof, belonging to the field of organic photoelectricity. The organic photovoltaic battery comprises a transparent conducting substrate 1, an anode buffer layer poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) 2, an active layer 3, a cathode modification layer 4 and a metal back electrode layer 5. The preparation method comprises the following steps: cleaning the transparent conducting substrate, and drying; spin coating the PEDOT:PSS anode buffer layer 2 on the transparent conducting substrate 1, and drying; spin coating the organic active layer 3 on the PEDOT:PSS anode buffer layer 2, and drying; depositing the cesium acetate cathode modification layer 4 on the active layer 3; and coating the metal back electrode layer 5 by a thermal evaporation method on the cesium acetate cathode modification layer 4. In the invention, the cesium acetate is applied as a cathode modification layer of an organic photovoltaic device by a thermal evaporation or solution spin coating method. Compared with the traditional inorganic salt lithium fluoride (LiF) cathode modification layer, the cesium acetate organic salt as the cathode modification layer can form better interfacial contact with the active layer, thereby remarkably improving the photoelectric conversion efficiency and stability of the organic photovoltaic battery devices.

The invention discloses a material with stable change-resistant capability and a change-resistant memory belonging to field of semiconductor non-volatility memory. The material is an HfO2, ZrO2 or CeO2 thin film doped with metallic element ions of +3 valence. The HfO2, ZrO2 and CeO2 in the change-resistant material have stable lattice structure and less defect state, and Hf, Zr and Ce ions all have +4 valence. Defect can be artificially introduced by doping metallic element ions of +3 valence into the HfO2, ZrO2 and CeO2. So that, HfO2, ZrO2 or CeO2 thin film doped with metallic element ions of +3 valence can be used as change-resistant layer, stability and controllability of change-resistant storage are effectively increased by artificially controlling concentration of defect generation.

The invention relates to a graphene / WSe2 / NiFe-LDH aerogel and a preparation method thereof. The preparation method comprises following steps: mixing graphene oxide sheet dispersion liquid and WSe2 nano sheet dispersion liquid; adding at least one of a reducing agent, a crosslinking agent, and a pH adjuster, evenly mixing, carrying out reactions to obtain graphene / WSe2 hydrogel, freeze-drying the hydrogel to obtain graphene / WSe2 aerogel; soaking the graphene / WSe2 aerogel in NiFe-LDH nano sheet dispersion liquid to prepare graphene / WSe2 / NiFe-LDH hydrogel, and carrying out freeze-drying to obtaingraphene / WSe2 / NiFe-LDH aerogel. The provided N,S co-doped graphene / WSe2 / NiFe-LDH (N,S co-doped graphene / tungsten diselenide / NiFe-LDH) preparation method is simple, the cost is low, and the preparedN,S co-doped graphene / WSe2 / NiFe-LDH has excellent electrochemical properties such as large specific capacitance, good cycle performance, small internal resistance, and the like.

The invention discloses a preparation method of a novel nano-silver conductive adhesive. The preparation method comprises the following steps: a) preparing nano-silver bonding carbon nano-tube powder;b) preparing the nano-silver conductive adhesive; c) solidifying the nano-silver conductive adhesive. The preparation method disclosed by the invention has the advantages that by using a modified carbon nano-tube as a bearing matrix, nano-silver particles are deposited on the carbon nano-tube by adopting a liquid phase reduction method; because the carbon nano-tube is subjected to acid-alkali compounding treatment, a large quantity of unsaturated bonds exist on the surface of the carbon nano-tube, so that surface tension is greatly reduced; because the tube length of the carbon nano-tube is shorter, the nano-silver particles can be massively and uniformly attached onto the surface of the carbon nano-tube, and interface contact between the carbon nano-tube and a micro-silver strip in the conductive adhesive is effectively enhanced, and a conductive ratio of the conductive adhesive is improved; meanwhile, with addition of the modified carbon nano-tube, anti-impact performance and anti-shearing performance of the conductive adhesive are also enhanced.