88results about How to "Eliminate contact resistance" patented technology

A solid oxide fuel cell (SOFC) repeat unit includes an oxide electrolyte, an anode, a metallic fuel flow field, a metallic interconnect, and a metallic air flow field. The multilayer laminate is made by casting tapes of the different functional layers, laminating the tapes together and sintering the laminate in a reducing atmosphere. Solid oxide fuel cell stacks are made by applying a cathode layer, bonding the unit into a gas manifold plate, and then stacking the cells together. This process leads to superior mechanical properties in the SOFC due to the toughness of the supporting metallic layers. It also reduces contact resistances in stacking the cells since there is only one physical contact plane for each repeat unit.

A method for shielding a substrate from electromagnetic interference is provided including providing an electromagnetic interference (EMI) shielding composition to the substrate. The EMI shielding composition comprises a reactive organic compound and a conductive filler that, during the cure of the organic compound, is capable of self-assembling into a heterogeneous structure comprised of a continuous, three-dimensional network of metal situated among (continuous or semi-continuous) polymer rich domains. The resulting composition has exceptionally high thermal and electrical conductivity.

This invention discloses a sort of method that it uses the light-sensitive lacquer hot-melt method to prepare the roundness heave biologic micro-electrode array. It uses the light-sensitive lacquer technique to prepare the heave cylindrical light-sensitive lacquer, and it adopts the hot-melt circumfluence light-sensitive lacquer to form the roundness salient point. A bed of polymer which is covered in the underlay is used for the protecting material of the bottom of the device, and the presented in figures forms the metal electrode point and the lead, and then that it covers the polymer to be the protecting material of the top of the device. The presented in figures reveals the electrode point and the weld point, and it gets the needed roundness heave smooth micro-electrode array. The cost of the invention is low, also the technical process is simple, and it has the upper irritant effect. It is used for the preparation of the biologic micro-electrode array which has the nerve-cell stimulation of the retina prosthesis and so on.

The invention relates to the field of vanadium battery manufacturing, in particular to a novel bipolar plate for a vanadium battery and a preparation method for the bipolar plate, and solves the problems of high battery internal resistance, low energy efficiency and the like in the prior art. The bipolar plate consists of three parts, namely an electrode, a framework layer and an electrode; and the electrodes and the framework layer are adhered through conductive agents to form the integral bipolar plate for the vanadium battery. According to working requirements of the vanadium battery, heat-resistant and corrosion-resistant polymer resin and conducting agents and electrodes are taken as the central framework layer, so that the bipolar plate having high conductivity, high strength and corrosion resistance is prepared; and the resistivity of the bipolar plate can reach 0.03-0.1 omega.cm, so that the power of the vanadium battery is improved. The bipolar plate provided by the invention has high conductivity and is in good contact with the electrodes; and by using the bipolar plate, the resistance of the vanadium battery is reduced, and the power of the vanadium battery is improved, so that the cost of the vanadium battery is reduced, and the reliability of the vanadium battery is guaranteed.

The invention provides a metal-electroplating enhanced transparent conductive film and a preparation method thereof. The preparation method comprises: a transparent conductive layer is prepared on the surface of a substrate; a metal layer is deposited on the transparent conductive layer by an electroplating method and post-processing is carried out to obtain a metal-electroplating enhanced transparent conductive film. The mass ratio of the metal of the metal layer to the material of the transparent conductive layer is 0.001-500: 1. The surface of the substrate is a planar, curved or irregular surface. According to the invention, with the electroplating technology, the contact resistance can be eliminated, the ohmic contact can be realized, and the light-transmitting property and conductive property of the transparent conductive film can be enhanced obviously. Moreover, the temperature-resistance performance of the film is excellent and the adhesive force is good; the process is simple; the cost is low; the repeatability and efficiency are high; and the transparent conductive film has the broad industrial application prospects.

The invention relates to the field of manufacturing of vanadium batteries and particularly relates to a bipolar plate for a vanadium battery and a preparation method of the bipolar plate, aiming at solving the problems in the prior art that high uniform degree of mixing of materials of the bipolar plate is hardly guaranteed, the resistance rate of a polymer-carbon black composite bipolar plate is too high, the surface resistance of the bipolar plate is increased by electrochemical corrosion. The preparation method of the bipolar plate for the vanadium battery comprises the following steps: immersing pretreated carbon fiber cloth into conductive glue and curing to obtain a base body, and carrying out hot-pressing compounding on the base body and a carbon material by a pressing machine to finally obtain the bipolar plate. According to the preparation method, the conductive glue is prepared from macromolecular resin with good high temperature resistance and corrosion resistance and metal powder; the selected carbon fiber cloth is pretreated firstly, and then immersed into the conductive glue and finally cured to serve as the base body, and the carbon material and the base body are compounded by hot pressing to prepare the high-conductivity, high-strength and corrosion-resisting bipolar plate. The bipolar plate provided by the invention has high conductivity; and the consistency between single vanadium battery pieces is improved after the compounding, and the mechanical strength is high so that the reliability of the vanadium battery is guaranteed.

The invention relates to a method of compositely manufacturing proton exchange membrane fuel cell bipolar plate and membrane electrode assembly in the technical field of fuel cell; the method comprises the steps of: first, using stamping process to process the double-layer stainless steel fiber net into the bipolar plate, second, using polyfluortetraethylene for executing hydrophobic treatment to the formed stainless steel fiber net bipolar plate, thereby forming hydrophobic reaction gas channel; third, coating a layer of carbon powder at surface of the bipolar plate after the hydrophobic treatment for leveling; fourth, applying the catalyst layer on the Nafion type proton exchange membrane to produce Pt / C catalyst layer; fifth, carrying out heat pressing treatment to the processed bipolar plate and the proton exchange membrane having catalyst layer to obtain the composite stainless steel fiber net bipolar plate and membrane electrode assembly. The component material of the invention has low producing cost and little ohmic loss and can be bent to satisfy the diverse design requirements of the stack structure.

The invention provides an OLED backplane structure and a method for manufacturing the OLED backplane. The OLED backplane structure is provided with a composite electrode (5). On one hand, the materialof the contact part (51) of the composite electrode (5) in contact with a semiconductor layer (111) of a thin film transistor (11) is conductive metal oxide. While the Fermi level pinning effect between a metal and a semiconductor is reduced, a large series resistance is not caused, and the contact resistance of the metal and the semiconductor can be greatly reduced. On the other hand, an anode and a drain electrode of the thin film transistor (11) are integrated to be a whole body, the contact resistance between the anode and the drain electrode of the thin film transistor (11) is eliminated, thus the on-resistance of an OLED display can be greatly reduced, and the power consumption is reduced.

Disclosed herein are a test probe and a method of manufacturing the test probe. The invention has a simple structure, thus affording ease of manufacture, and eliminates contact resistance during a test, thus enhancing the reliability of the test. The test probe includes a probe part which is provided on the upper portion of the probe and contacts a contact terminal of an object to be tested. A spring part, providing elastic force, extends integrally from the lower portion of the probe part, so that current flows from the object to the lower portion of the spring part. According to this invention, the spring part is integrally provided on the lower portion of the probe part, thus having a simple structure and affording ease of manufacture, and measuring current is transmitted directly from the probe part to the spring part, thus eliminating contact resistance and shortening the signal path, therefore enhancing the reliability of a test.

This disclosure relates to methods for manufacturing devices capable of functioning as thermoelectric generators and related objects by the process of additive manufacturing or by 3-D printing or by casting. This disclosure also particularly relates to the uses of the thermoelectric generators and related objects produced by these methods.

The invention provides a test probe device comprising a needle bed main body, a test needle, a plastic spring bracket and a pressure sensor, wherein the needle bed main body comprises a fixed seat, a test needle fixer, a U-shaped pressure adjuster and a pressure sensor fixed part; the test needle comprises a knife-type test probe and a signal output line connected with the test probe; the signal output line is connected with the fixed seat at the back end of the main body; the test needle is fixed on the plastic spring bracket, and the plastic spring bracket is fixed at the front end of the needle bed main body; the pressure sensor comprises a pressure sensor main body, a pressure data conducting wire and a pressure data conducting wire connector; the pressure sensor main body is fixed on the upper surface of the needle bed main body via the pressure sensor fixed part; the pressure data conducting wire is connected with the pressure sensor main body and the pressure data conducting wire connector; and light reflected bars are arranged below the induction device of the pressure sensor and at the upper surface of the plastic spring bracket.

The invention discloses a four-terminal electrical impedance tomography method based on a two-terminal impedance measurement mode, and belongs to the technical field of the electrical nondestructive testing. The method comprises the following steps of: establishing a finite element model of an electrical impedance tomography sensor, and calculating a four-terminal sensitivity matrix of adjacent excitation, relative excitation or diagonal excitation modes; measuring two-terminal impedance for an electrode of a relay dual-T-type multi-channel switch module gate sensor; converting the two-terminal impedance value into the four-terminal impedance value in a corresponding excitation mode; and resolving the electric conductivity difference distribution in a sensitive field, and reconstructing images. The four-terminal electrical impedance tomography method based on the two-terminal impedance measurement mode provided by the invention is suitable for a non-intrusive mode electrical impedance tomography technology, and in particular is suitable for the situation that the four-terminal impedance measurement method does not meet application requirements or does not have a four-terminal impedance measurement instrument. The four-terminal electrical impedance tomography method based on the two-terminal impedance measurement mode provided by the invention can effectively improve the contrast ratio and resolution ratio of the constructed images, and can accelerate the imaging speed.

The invention discloses a method for manufacturing a prefabricated branch cable, which is implemented by after connecting a main cable and the branch cable, adopting a band-shaped material lapping with identical insulation and jacket with the original cable, then wrapping with a high temperature resistant polyfluortetraethylene band, a glass fiber band and a soft copper band, adopting coal gas flame or other methods to heat the lapping, raising the temperature until that the in insulation and jacket material inside the lapping layer is fused, cooling and processing. The insulation and jacket can be any material, and the only requirement is that the structure and material are identical with those of the cable. The insulation and jacket can be of the same material or different materials, andcan be finished in one step or multiple steps according to concrete conditions. The invention needs not to adopt an expensive large injection molding set or dies in the prior art, thus reducing production cost and improving safety and reliability.

The invention discloses a preparation method of lithium iron phosphate. The preparation method comprises the following steps: respectively adding an iron source, a lithium source and a phosphorus source according to a certain substance amount ratio and a certain sequence in a dispersion medium, uniformly stirring, then adding a proper amount of organic carbon source, and preparing a lithium iron phosphate precursor slurry; putting a prefabricated AAO template with appointed aperture distribution in a sealed vessel, pumping out air in the AAO template through a vacuum air pump filtration machine, then pouring the lithium iron phosphate precursor slurry into holes of the AAO template under the negative pressure action, and carrying out vacuum drying; and sintering the AAO template loading a lithium iron phosphate precursor at a certain atmosphere, and removing the AAO template with an NaOH solution to prepare a the lithium iron phosphate with a nanowire array morphology. According to the preparation method, the lithium iron phosphate has the nanowire array morphology, the tortuosity degree and distance of embedding and disembedding of lithium ions are shortened, and high-rate charge and discharge is realized.

The invention relates to the field of manufacturing of vanadium cells, particularly relates to an integrated electrode for a vanadium cell, and a preparation method thereof, and solves the problems of difficulty in high-current charging and discharging, low energy efficiency, large flow liquid resistance and the like in the prior art. High-molecular resin powder and an electrode are taken as raw materials, volatile resolvent is taken as dispersion medium, resin and the electrode are fully mixed under the action of stirring, and then suction filtration is performed until no resolvent can percolate; and the electrode mixed with the resin powder is placed in a drying oven for drying, then placed in a die for hot-forming, is put into resolvent after being taken out to have resin on the surface to be separated, and is dried in the drying oven so as to form the integrated electrode. According to the working requirements of the vanadium cell, the high-molecular resin and the electrode are prepared into the integrated electrode; and the resistivity can reach 0.01 to 0.1 Omega. cm, so that the physical resistance of the cell is lowered, the high-current charge-discharge capability and the energy efficiency of the vanadium cell can be improved, and the reliability of the vanadium cell can also be improved.

The invention relates to a resistance testing method of conduction asphalt concrete used for roads; the invention is characterized in that the testing method comprises the steps as following: firstly, the preparation of a testing device: the testing device is formed by a testing die (1), a first electrode (2), a first steel-made clapboard (3), a supporting block (4), a second steel-made clapboard (5), a second electrode (6), a first lead (7), a second lead (8) and a resistance measuring meter; secondly, leading the tested and heat mixed conduction asphalt concrete evenly to be filled into an area 1 and an area 2 of the testing die (1) according to the total amount of the conduction asphalt concrete needed for the area 1 and the area 2; thirdly, leading the tested and heat mixed conduction asphalt concrete to be evenly filled into an area 3 of the testing die (1) according to the total amount of conduction asphalt concrete needed for the area 3, and unmolding after the maintenance of indoor temperature within 24 hours; fourthly, leading the input end of a resistance meter to be respectively connected with the first lead (7) and the second lead (8) to measure the resistance value of the conduction asphalt concrete. The invention is simple and highly accurate.

The invention discloses a cathode preparation process for reducing niobium oxide capacitor equivalent series resistance. The process mainly comprises steps of anode core block and dielectric film processing, cathode semiconductor processing, cathode transition layer processing and cathode leading-out layer processing. Impregnation of the anode core block forming the dielectric layer, dehydration and thermal decomposition of a low-concentration and high-concentration manganese nitrate solutions are carried out, a transition layer is added between the cathode semiconductor and the cathode leading-out layer, interlayer contact resistance is eliminated, and thus equivalent series resistance of the capacitor is reduced by more than 20%. As the dehydration step is adopted before the thermal decomposition step in the manganese nitrate solution, the filling rate of manganese dioxide inside the anode core block is improved, alternative impregnation and thermal decomposition in the low-concentration and high-concentration manganese nitrate solutions can be cancelled, the operation is simpler, the efficiency is higher, and the process is suitable for industrialized mass production.

The invention belongs to the field of solar cells, and particularly relates to a solar cell module and a manufacturing method thereof. The solar cell module comprises multiple serially connected sub-cells. Each sub-cell comprises a base electrode, an electronic transmission layer, an optical active layer, a hole transmission layer and a top electrode successively from the bottom to the top. The polarities of any two adjacent sub-cells are opposite to each other on the serial connection circuit of the solar cell module. The base electrodes of any two adjacent sub-cells on the serial connectioncircuit are directly connected with each other or directly connected with the top electrodes. According to the invention, middle ineffective area used for connecting the sub-cells can be effectively reduced; space filling factors of the module are improved; meanwhile, contact resistance of upper and lower electrodes is eliminated; and performance of the cell is further improved. According to the invention, it is potentially possible to achieve highly-efficient large-area solar cells.

A tank closure comprises a tank cap and an electrically conductive tank neck. The tank cap has, for handling thereof, a grip portion made of electrically conductive material that is in electrical contact with at least one resilient contact projection that is also electrically conductive and, with the tank cap in the screwed-on state, rests against the tank neck. The contact projection or projections is or are shaped onto or molded into the grip portion.

The present invention provides a manufacture method of a thin film transistor backplane, comprising steps of: providing a substrate (20) with a gate (21), an insulation layer (22) and a semiconducting layer (23); sequentially forming a second metal layer, a reflecting electrode layer and a conductive oxide layer on the substrate (20); implementing one photolithographic process to the second metal layer, the reflecting electrode layer and the conductive oxide layer to pattern the second metal layer, the reflecting electrode layer and the conductive oxide layer for respectively forming a source / a drain (253), a reflecting electrode (252) and a pixel electrode (251), and the source / the drain (253) are connected to the semiconducting layer (23; forming a protective layer on the source / the drain (253), the reflecting electrode (252) and the pixel electrode (251; forming a flat and pixel defining layer (27) on the protective layer (26); forming a photospacer (28) on the flat and pixel defining layer (27).

The invention discloses a micro-scale initiating explosive device ignition temperature measuring device. The micro-scale initiating explosive device ignition temperature measuring device comprises a monocrystalline silicon substrate, wherein a silicon dioxide insulating layer is grown on the monocrystalline silicon substrate; a platinum microstructure transduction element and a first electrode connected with the platinum microstructure transduction element are sputtered on the silicon dioxide insulating layer through an MEMS (micro-electromechanical systems) process; the first electrode is used as a voltage input end of the platinum microstructure transduction element; meanwhile, a platinum temperature sensitive element is sputtered in the middle of the platinum microstructure transductionelement by using the MEMS process; the platinum temperature sensitive element is connected with second electrodes; and an input end and an output end of the platinum temperature sensitive element areconnected with the two second electrodes respectively to form a four-wire system measuring method. According to the micro-scale initiating explosive device ignition temperature measuring device, a mature MEMS processing process is combined with the resistance temperature characteristic of a platinum material, so that the micro-scale initiating explosive device ignition temperature measuring device has the characteristics of small size of the sensitive element, high linearity, high measuring accuracy and the like.

The invention discloses a volume resistivity test method of an ethylene vinyl acetate copolymer (EVA) adhesive film used for photovoltaic module packaging, the volume resistivity test method includes the following steps: (1) preparing a sample: respectively arranging auxiliary electrodes on the upper surface and the lower surface of the EVA adhesive film to obtain the sample; (2) testing resistance: testing the sample through a high-insulation volume resistivity tester and reading a testing resistance; (3) calculating volume resistivity: calculating the volume resistivity of the EVA adhesive film in the sample according to a formula 1; or calculating the relative volume resistivity of the EVA adhesive film in the sample according to a formula 2; the formula 1 is that Rho [1]=RS / L=R Rho [density] S<2> / m, and the formula 2 is that Rho [2]=R / m. The testing method has the advantages of being small in measuring error, high in measuring accuracy and easy to operate.

A disconnect switch (30, 30SA) is placed in circuit between a battery bank (12) and a distribution point (30B) for the entire electrical system load except the engine cranking motor (24). This allows the circuit between the battery bank and a cranking motor solenoid (22) that operates the cranking motor to be switch-free. A switch-free circuit allows a continuous cable to connect the battery bank to the cranking motor solenoid, significantly reducing the electrical resistance between the battery bank and the cranking motor solenoid.

The invention discloses a non-contact type concrete resistivity testing instrument. The non-contact type concrete resistivity testing instrument is characterized by comprising an inner working core barrel and an outer working core barrel, wherein the inner working core barrel and the outer working core barrel are assembled into a double-shell barrel body structure by adopting bolts; the double-shell barrel body structure is provided with a ring-shaped iron core and a current testing instrument which respectively surrounds opening ends of an upper barrel and a lower barrel of the inner working core barrel and the outer working core barrel, the inner wall of the inner working core barrel and the outer wall of the outer working core barrel; the inner wall of the outer working core barrel is provided with an induction coil which is connected with a voltage testing instrument outside the outer working core barrel by a wire; and the iron core on the outer wall of the outer working core barrel is wound with a primary coil which is connected with a power supply outside the outer working core barrel by a wire. The non-contact type concrete resistivity testing instrument disclosed by the invention is based on the electromagnetic mutual inductance principle, can be used for testing the resistivity when being buried and cast in concrete, and is suitable for monitoring the change of the resistivity of the concrete for a long time and in real time.

The invention relates to an electrode without contact resistance, and belongs to the technical field of water electrolysis hydrogen production. The electrode without contact resistance comprises an electrode plate assembly, an electrode supporting body and an electrode net. The electrode plate assembly comprises a metal electrode frame and a main electrode plate welded into the metal electrode frame. Annular bosses are arranged on the two sides of the metal electrode frame, and the electrode net is welded to the annular bosses. The electrode supporting body is welded between the electrode net and the main electrode plate. The integrated welding manner is adopted in the electrode without contact resistance, the contact resistance between electrodes is eliminated, and the voltage needed by electrolysis is reduced.

A wicking structure comprising a biporous wick formed with a semiconductor (e.g., silicon), wherein the biporous wick comprises first pores and second pores formed by the semiconductor and the first pores are larger than the second pores.

The invention relates to a test fixture for powder resistivity, and the test frame is provided with a guide rail device, and a slide caliper is arranged on the surface of the guide rail device and is connected with the base of the guide rail device; a double-screw bolt and a screw mandrel are arranged in a guide rod, and the double-screw bolt and the screw mandrel are connected with a big gear wheel through a cam, so that a big gear wheel and a small gear wheel are bonded to achieve the gear transmission under the effect of an external-force handle to drive a pressure mechanism to pressurize; the pressure mechanism is fixed on a moving frame and is in stud connection with the moving frame; a powder standard container is located above the base and below a pressure sensor and is used for current and voltage drop method, particularly four-terminal measurement method (both current electrode and voltage electrode are contacted with a sample at the same time), so as to eliminate contact resistance errors generated by contact between the electrodes and the powder and eliminate errors caused by the connection system. The fixture is compact in structure, novel in design and convenient in installation and can measure the resistivity of the power sample truly and accurately.