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

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.

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 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.

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.

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 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 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 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 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.