169 results about "Copper electrode" patented technology

The invention provides an LTCC raw material belt with a high thermal expansion coefficient, an LTCC substrate and a preparation method of the LTCC substrate, the LTCC raw material belt with a smooth surface and a uniform thickness is obtained through tape casting by adjusting the proportion of silicon dioxide ceramic powder, MgTiO3 ceramic, SrTiO3 ceramic, Li2MgSiO4 ceramic, BCBS, ZABS and LASP microcrystalline glass powder, the LTCC raw material belt is sintered in a nitrogen furnace at 880-940 DEG C for 1-3 h, and the LTCC raw material belt can be co-fired with low-cost copper electrode slurry to be flat and tightly attached to the low-cost copper electrode slurry. The LTCC substrate with the thermal expansion coefficient larger than 11 ppm / DEG C is prepared, under the test frequency of 5 GHz, the dielectric constant of the LTCC substrate ranges from 5.1 to 6.1, the dielectric loss ranges from 0.0025 to 0.004, the bending strength ranges from 170 MPa to 230 MPa, the thermal expansion coefficient at the temperature ranging from 30 DEG C to 400 DEG C ranges from 11.0 ppm / DEG C to 13.0 ppm / DEG C, and acid resistance is good.

The utility model discloses a getter film with high initial outbreak rate and lasting moisture absorption rate for a perovskite battery, a support framework layer is an expanded polytetrafluoroethylene microporous film layer, and an active layer is a getter active layer formed by infiltrating a getter into a pore structure of the expanded polytetrafluoroethylene microporous film layer. The composite layer is a getter composite layer formed on at least one side surface of the expanded polytetrafluoroethylene microporous membrane layer through a getter. Through the above mode, the periphery of the active material layer of the perovskite cell in a service environment can be kept in a vacuum state for a long time, and the perovskite cell is ensured to be in a high photoelectric conversion efficiency and a stable state for a long time; the getter film is coated with a back adhesive layer and is non-corrosive, and the getter film can be directly pasted on a glass cover plate of a perovskite cell or on silver, aluminum and copper electrodes for packaging after the release film is uncovered during use; and the initial explosion rate is high, and moisture and oxygen can be quickly absorbed in the packaging cavity within two hours, so that a vacuum state is achieved.

The invention relates to the field of photovoltaic technology, and discloses an interface optimization method for a front-surface seed-layer-free electrode of a photovoltaic cell and a photovoltaic device. The method comprises the following steps: placing a silicon substrate in PECVD (Plasma Enhanced Chemical Vapor Deposition) equipment, and depositing a SiOxNy composite passivation layer with the thickness of 1-10nm on the surface of a transparent conducting layer on the front surface of the silicon substrate through plasma in-situ deposition; printing low-temperature sintered copper paste of which the sintering temperature is less than or equal to 200 DEG C onto the surface of the SiOxNy composite passivation layer; and curing the printed low-temperature sintered copper paste to obtain the front copper electrode. According to the method, a front seed layer is abandoned, direct combination of a front copper electrode and a front transparent conducting layer of a silicon substrate is achieved, an efficient interface inhibition passivation tunneling layer (namely a thin SiOxNy composite passivation layer) is constructed to block a copper-silicon mutual expansion path, interface contact characteristics are optimized, low-temperature sintering type copper paste is matched, contact resistance is reduced, stability is improved, the whole process is low in temperature, and the method is suitable for large-scale production. The method is compatible with an HJT battery manufacturing system and is low in metallization cost.

The invention relates to the technical field of solar cells, in particular to a preparation method of a single-wave precisely doped N-type BC cell. The invention discloses a preparation method of a single-wave precisely doped N-type BC battery. The preparation method comprises the following steps: S1, pre-treating an N-type silicon wafer; s2, performing boron doping on the front surface of the silicon wafer by adopting infrared single-wavelength laser to form a P + shallow junction; performing phosphorus doping on the back surface of the silicon wafer by adopting ultraviolet single-wavelength laser to form an N + region; s3, carrying out single-frequency microwave annealing treatment; s4, preparing a tunneling oxide layer, a boron-doped polycrystalline silicon passivation layer and a surface laminated passivation film; s5, carrying out laser grooving and copper electrode electroplating; s6, cutting the edge of the silicon wafer by adopting single-wavelength femtosecond laser; and S7, low-temperature annealing treatment. According to the method, the doping accuracy is improved, the service life of N-type silicon wafer carriers is ensured, the carrier recombination loss is remarkably reduced, the contact resistance and edge recombination loss is reduced, and the filling factor and the conversion efficiency of the cell are improved.

The application relates to the development and technical field of electrocatalysts, and discloses a benzothiadiazole modified single-atom zirconium-doped metal copper electrode material and a preparation method and application thereof. The preparation method comprises the following steps: dissolving inorganic copper salt and inorganic zirconium salt, adding the inorganic copper salt and the inorganic zirconium salt into an alkaline solution, and performing hydrothermal reaction to obtain a single-atom zirconium-doped copper oxide precursor; dissolving benzothiadiazole, adding the benzothiadiazole into a dispersion solution of the single-atom zirconium-doped copper oxide precursor to obtain a mixed solution; spraying the mixed solution on a polytetrafluoroethylene film substrate loaded with copper nanoparticles to obtain a benzothiadiazole modified single-atom zirconium-doped copper oxide precursor electrode material; and performing electrochemical reduction treatment on the benzothiadiazole modified single-atom zirconium-doped copper oxide precursor electrode material to obtain a benzothiadiazole modified single-atom zirconium-doped metal copper electrode material. The electrode material is applied to an electro-reduction carbon dioxide reaction as a working electrode, exhibits excellent electro-reduction CO2 performance in an acidic environment, and realizes high-value-added C 2+ product with high selectivity.

The invention discloses a czochralski silicon thermal field and a single crystal furnace structure. The thermal field comprises a heater assembly, a middle-upper heat preservation and supporting assembly, a lower heat preservation and crucible supporting assembly and a water-cooling heat insulation assembly, and the heater assembly is fixed on a furnace cover. According to the thermal field structure, the structural form that all assemblies of an existing thermal field are arranged on the furnace bottom plate is changed, a thermal insulation and thermal field supporting structure of the thermal field is fixedly installed in the main furnace chamber, and a heater of the heater assembly is connected to the furnace cover. The heater assembly of the thermal field adopts a hoisting type design, corrosion of oxides to heater feet and copper electrodes is greatly weakened, the service life of the device is prolonged, an upper lifting mechanism is reduced and the time for cleaning the thermal field and replacing a crucible is shortened in cooperation with an open type structure of the furnace bottom of the single crystal furnace, so that the production efficiency is greatly improved, and the production cost is reduced. The safety is better, and the functionality is stronger.

The invention relates to the technical field of vacuum furnace electrode quick connection, in particular to a high-temperature vacuum furnace graphite electrode quick connection structure which comprises a copper bar, a furnace body electrode base, a copper end connecting piece, a graphite end connecting piece and a graphite lock nut. The detachable copper end connecting piece and the graphite end connecting piece are adopted to be connected with the water cooling copper electrode and the graphite special-shaped electrode respectively, the plane where the conductive end A of the copper end connecting piece and the plane where the conductive end B of the graphite end connecting piece are located are machined precisely, sufficient attachment is guaranteed, and the conductive requirement is met. And when the special-shaped electrode in the vacuum furnace is worn and needs to be replaced, the replacement operation can be completed only by quickly disassembling the single end in the vacuum furnace.

The invention discloses a zone-melting high-frequency coil with a water passing structure. A zone-melting method high-frequency coil with a water passing structure comprises a high-frequency coil, a first installation part and a second installation part which are arranged side by side are arranged on the high-frequency coil, the first installation part is detachably and electrically connected with the end of a copper electrode, and a water inlet in butt joint with an annular cooling channel is formed in the second installation part; the water inlet copper rod comprises a copper pipe part used for penetrating through the copper electrode and an exposed butt joint part used for exposing the copper electrode, and the exposed butt joint part is detachably connected with the second mounting part; the copper pipe part is sleeved with a first insulating ring, the first insulating ring abuts against the exposed butt joint part, and the first insulating ring is clamped between the water inlet copper rod and the copper electrode; the end, away from the exposed butt joint part, of the copper pipe part extends out of a copper electrode, and the end, away from the exposed butt joint part, of the copper pipe part is sleeved with a second insulating ring. A water inlet cooling system and a conductive function are realized, the service life of the high-frequency coil is prolonged, and the effect is improved.

The application provides a precision machining method for earphone mesh mold forming parts, comprising the following steps: designing a copper electrode three-dimensional design drawing according to an earphone mesh mold forming part three-dimensional design drawing; setting a machining strategy and machining parameters according to the copper electrode three-dimensional design drawing, and generating a numerical control machining program, the machining strategy comprising sequentially performing rough machining, semi-finishing machining and finishing machining on the copper electrode blank; using a precision numerical control machine tool to process the copper electrode blank according to the numerical control machining program to form a copper electrode, in the finishing machining, the inner hole on the copper electrode is machined by using a fifth tool with a diameter of 0.3 mm; screening out qualified copper electrodes according to quality detection standards; using a precision numerical control discharge spark machine to perform electric spark machining according to preset discharge parameters and the qualified copper electrodes, and the part blank is made into an earphone mesh mold forming part. The application can solve the problems of hole deformation and size precision after copper electrode machining, and improve the qualified rate of copper electrodes and earphone mesh mold forming parts.

The invention provides a preparation method of a grid line of a perovskite laminated cell, the cell and a preparation method of the cell, and relates to the technical field of solar cells. The preparation method of the grid line of the perovskite laminated cell comprises the following steps: S1, respectively forming electroplating electrode holes in the front surface and the back surface of the perovskite laminated cell to be manufactured by the grid line; s2, double-sided copper electroplating is adopted, a grid line is prepared at an electroplating electrode opening through an oxidation-reduction reaction, and preparation of copper electrodes on the front surface and the back surface of the cell is achieved; wherein an AlOx protection layer is prepared on the front surface of the perovskite laminated cell to be manufactured by the grid line; the electroplating temperature of the double-sided copper electroplating is 20-60 DEG C. According to the invention, the grid line is prepared by combining the AlOx protection layer with the low-temperature electroplating process, so that the cost is reduced, the cell performance is improved, the consumption of silver paste is reduced, and the production cost is reduced.

The invention discloses a droplet nanometer friction / photo-thermoelectric hybrid power generation device and a preparation method thereof. The hybrid power generation device comprises a liquid drop power generator part and a photo-thermal power generator part, wherein the liquid drop power generator part is mainly formed by integrating a capacitor and liquid drop friction power generation, and the photo-thermal power generator part is mainly composed of a temperature difference semiconductor. The preparation method of the device mainly comprises the following steps: carrying out surface treatment on a zinc sheet, so that a layer of candle ash is uniformly attached to the surface of the zinc sheet to obtain the treated zinc sheet; uniformly coating a layer of polydimethylsiloxane (PDMS) on the surface of the candle ash, and heating in an oven for two hours for curing and forming; fixing a copper electrode on the surface of the PDMS, and welding a lead on the copper electrode and the zinc sheet; the temperature difference semiconductor and the zinc sheet are combined together through heat-conducting silicone grease; a radiation cooling plate is attached to the cold end of the temperature difference semiconductor; and wires are respectively welded at the hot end and the cold end of the temperature difference semiconductor. The droplet nanometer friction / photo-thermoelectric hybrid power generation device provided by the invention is simple in structure and convenient to manufacture, can continuously and stably output direct current voltage without depending on single weather, and has a wide application prospect.

The application discloses an n-type bismuth telluride-based thermoelectric element NiFeP alloy interface barrier layer and a preparation method thereof, and belongs to the technical field of thermoelectric materials and devices. The barrier layer in the application is an electroplated NiFeP ternary plating layer, the content of Fe is 15-20 wt%, the content of P is 2-4 wt%, the balance is Ni, the thickness is 5-10 microns, and the barrier layer is prepared through substrate pretreatment, electroplating solution preparation, electroplating deposition and post-treatment. The application also constructs a thermoelectric element containing the barrier layer, and the n-type bismuth telluride thermoelectric material layer is connected by a NiFeP alloy interface barrier layer, a SAC305 solder layer and a copper electrode layer in sequence. The barrier layer has excellent diffusion inhibition effect, the interface bonding strength is greater than 16 MPa and the contact resistivity is less than 8 mu omega cm after aging at 200 DEG C for 144 hours. 2 The preparation process is simple, the cost is relatively low, large-scale production is suitable, and the barrier layer is expected to play an important role in the application field of thermoelectric materials and devices.

The application relates to the development and technical field of electrocatalysts, and discloses a preparation method and application of a proton sponge modified fluorine atom doped metal copper electrode material, which comprises the following steps: adding a dispersion solution of a proton sponge into a dispersion solution of a hydroxyl copper fluoride precursor to obtain a mixed solution; uniformly spraying the mixed solution on a polytetrafluoroethylene film substrate loaded with copper nanoparticles to obtain a proton sponge modified hydroxyl copper fluoride precursor electrode material; and then electrochemically reducing the proton sponge modified hydroxyl copper fluoride precursor electrode material to obtain the proton sponge modified fluorine atom doped metal copper electrode material. The application further discloses the proton sponge modified fluorine atom doped metal copper electrode material obtained by the above preparation method and application of the proton sponge modified fluorine atom doped metal copper electrode material to an electro-reduction carbon dioxide reaction as a working electrode. The electrode material provided by the application exhibits excellent electro-reduction CO2 performance in an acidic environment, and realizes the preparation of high-value C 2+ products with high selectivity under an industrial-grade current density.

This invention relates to the field of thermal management and sensing monitoring technology, specifically an intelligent sensing system and method for the working fluid state within a pulsating heat pipe based on temperature monitoring. The method involves arranging pipe sections on a pulsating heat pipe, composed of alternating frictional and non-frictional materials. A ring-shaped copper electrode is attached to the outer wall of the frictional material section and connected to an electrometer, while thermocouples are used to measure temperature in the non-frictional material section. As the working fluid flows through the frictional section, it generates solid-liquid (vapor) frictional charge signals, which are transmitted synchronously with the temperature signal to a processing system. Feature extraction and model analysis are then used to perceive the working fluid's flow state and phase change characteristics in real time, thereby achieving intelligent sensing of the working fluid flow and heat transfer characteristics within the pipe. This invention has advantages such as simple structure, high real-time performance, high sensitivity, and non-invasive monitoring, and can be widely applied to the monitoring of the working fluid state and thermal performance analysis and evaluation of pulsating heat pipes and other phase change heat transfer components.

This utility model discloses a photosensitive drum counting device, comprising: a flat-panel metal detector, a column disposed on one side of the flat-panel metal detector, and a main control device disposed on the top of the column and electrically connected to the flat-panel metal detector; the flat-panel metal detector is used to sense the copper electrode plates on the top of each photosensitive drum in the packaging box and outputs an induced voltage corresponding to the number of copper electrode plates; the main control device calculates the number of copper electrode plates based on the induced voltage, and thus determines the number of photosensitive drums in the packaging box. This photosensitive drum counting device can automatically count the number of photosensitive drums in a single packaging box and can issue an alarm when there are fewer or more photosensitive drums than required, avoiding situations where there are fewer or more photosensitive drums in the shipped packaging boxes. It solves the problem of inaccurate product quantity per box caused by manual counting and weighing differences, reduces manual labor intensity, and improves the automation level of the production line.

This utility model discloses a SiC packaging structure based on flip-chip bonding, including a heat sink and a SiC substrate disposed on the heat sink. A bottom copper electrode is formed on the surface of the SiC substrate, and the bottom copper electrode is connected to the SiC substrate through a bonding layer. Multiple chips connected in parallel are disposed on the bottom copper electrode, and the top of the multiple parallel chips is connected to a top copper electrode. The bottom copper electrode and the multiple parallel chips, as well as the top copper electrode and the multiple parallel chips, are connected through a copper sintering layer. The packaging structure reduces the use of traditional bonding wires through flip-chip design and copper sintering process, significantly reducing parasitic inductance and contact resistance, and improving thermal conductivity and electrical performance. At the same time, the top and bottom copper electrodes achieve double-sided electrode leads, effectively improving the integration and heat dissipation efficiency of the package.

This disclosure provides an electrolytic cell device and method for simultaneously achieving desalination and electrocatalytic nitrate reduction, belonging to the field of electrochemical technology. The device uses activated carbon (AC) as the anode and a halogen-modified copper electrode as the cathode, physically separated into two electrochemically coupled chambers by a metal Pt or activated carbon interlayer. For the first time, it couples the electrocatalytic nitrate reduction to ammonia (NRA) module and the desalination module into an integrated system. This device can simultaneously achieve highly efficient desalination and electrocatalytic nitrate reduction, with a desalination rate reaching 188 μg / cm³. ‑ ²min ‑ ¹, Ammonia yield reached 1.16 mgh ‑ ¹cm ‑ ², adaptable to a wide salinity range, solving the problems of low desalination rate and narrow salinity adaptability in existing coupled systems, and achieving efficient synergy between nitrate resource recovery and seawater desalination. This disclosure is applicable to the treatment of marine wastewater or industrial wastewater containing nitrates.

The invention discloses an ultralow dielectric constant LTCC (Low Temperature Co-Fired Ceramic) material and a preparation method thereof, the ultralow dielectric constant LTCC material is formed by compounding a glass phase and a ceramic filler phase, the glass phase comprises Li2O, La2O3, SiO2, ZrO2, P2O5, MgF2 and Al2O3; the ceramic filler phase comprises BaB2O4 and a conditioning agent, and the conditioning agent is at least one of Al2O3, SiO2 or cordierite; according to the invention, the Li-La-Si system glass and the BaB2O4 filler are compounded according to a specific proportion, so that co-firing with a silver / copper electrode at a low temperature is realized, and the composite material has excellent thermal stability and environmental friendliness, and meets the requirements of high-frequency communication applications such as 5G millimeter waves and the like on high-performance substrate materials.

The invention provides an Ag-CuO / Cu electrode, a preparation method and passion fruit juice detection application, and the preparation method comprises the following steps: cleaning a copper electrode, and then grinding and polishing; the copper electrode obtained after primary treatment is immersed in a 0.5-1.5 M H2SO4 solution, square wave pulse treatment is carried out, and a pretreated copper electrode is obtained; the pretreated copper electrode is placed in a 0.5-1.5 M KOH solution, cyclic voltammetry scanning is carried out, and an activated copper electrode is obtained; and the activated copper electrode is placed in a 0.005-0.05 M AgNO3 solution, and Ag < + > is reduced and deposited on the surface of the copper electrode by adopting a constant potential deposition method to form an Ag modification layer. The Ag-CuO / Cu electrode prepared by the invention is used for detecting ascorbic acid in passion fruit juice, and is high in sensitivity, good in repeatability and reproducibility, excellent in long-term stability and strong in anti-interference capability; and the electrode preparation process is simple.

The utility model relates to discharging machine technical field especially a kind of discharging machine for copper electrode processing, including shell and discharging machine main body, the inner wall of shell is attached to discharging machine main body, the outer wall of shell is equipped with support structure, the inside of shell is equipped with push structure, the lower end of shell is equipped with through-hole, the inner wall left end of shell is equipped with recess. This discharging machine for copper electrode processing, by the cooperation of push structure and support structure, under the pull of spring, disc motion is driven, so that sliding rod is slid in the through-hole on the surface of support plate, sliding rod is pushed to the upper end of discharging machine main body by push plate, so that discharging machine main body is inclined to rotating plate, operator pulls out discharging machine main body along the surface of rotating plate, and discharging machine main body can be overhauled, discharging machine main body can be stably supported, so that it is more convenient to replace, and the probability of damage is reduced.

The application discloses a kind of nanofluid memristor based on AAO film and preparation method thereof, specifically: first copper electrode is arranged on glass substrate, PDMS liquid pool is arranged on first copper electrode, AAO film and CuSO4 electrolyte are arranged inside PDMS liquid pool, and second copper electrode is arranged on the top of PDMS liquid pool.The preparation method is: first copper electrode is placed in the central position of glass substrate, and gelatinous PDMS is dropped to the front end of first copper electrode;Punching is carried out on the solidified PDMS layer using a puncher, and a PDMS liquid pool is obtained;AAO film is transferred to the PDMS liquid pool, so that the lower surface of the AAO film is attached to the front end of the first copper electrode, and CuSO4 electrolyte is filled in the PDMS liquid pool;Second copper electrode is placed on the upper end of the PDMS liquid pool, and the PDMS liquid pool is sealed by covering the PDMS liquid pool with PDMS.The memristor in the application has the advantages of small working voltage, low power consumption, simple preparation and good stability.

This application discloses a transparent conductive film, its preparation method, and electronic skin. It includes: a flexible substrate; an interface bonding layer connected to the flexible substrate; a patterned copper electrode layer connected to the interface bonding layer, the patterned copper electrode layer having a thickness of 2µm-5µm and including at least an integrally connected periodic grid structure and curved interconnect units. The grid line width of the periodic grid structure is 3µm-8µm, the grid spacing is 100µm-300µm, and the intersections of the grid lines of the periodic grid structure have rounded corner transition structures with a radius of 2µm-5µm. The curved interconnect units are arranged in a sinusoidal serpentine structure. A composite passivation layer connected to the patterned copper electrode layer; wherein the transparent conductive film, sequentially stacked with the flexible substrate, interface bonding layer, patterned copper electrode layer, and composite passivation layer, has a sheet resistance ≤0.5Ω / sq and a light transmittance ≥85%. This application improves the overall performance of the transparent conductive film.

Electroplating of aluminum may be utilized to form electrodes for solar cells. In contrast to expensive silver electrodes, aluminum allows for reduced cell cost and addresses the problem of material scarcity. In contrast to copper electrodes which typically require barrier layers, aluminum allows for simplified cell structures and fabrication steps. In the solar cells, point contacts may be utilized in the backside electrodes for increased efficiency. Solar cells formed in accordance with the present disclosure enable large-scale and cost-effective deployment of solar photovoltaic systems.

Micro-bioenergy system for generating electrical energy from formic acid, comprising at least one capillary tube with a semipermeable membrane for drawing in formic acid from an ant nest, a micropump for transferring the acid into a reaction cell, a reaction cell with magnesium and copper electrodes for electrochemical conversion, an energy storage device for intermediate storage of the generated energy, and a housing for integrating and protecting the components.

The invention discloses a method for rapidly preparing a graphene-based supported catalyst through electric explosion, and belongs to the field of catalyst preparation. The implementation method comprises the following steps: taking graphene or doped graphene as a carrier, and uniformly loading metal salt on a graphene or doped graphene skeleton in a nanocrystalline form through a metal salt solution dipping and freeze-drying process to obtain a precursor; the method comprises the following steps: placing a precursor in an insulation discharge cavity, connecting two ends of the insulation discharge cavity in series into a high-voltage pulse discharge device through red copper electrodes, applying instantaneous high-power pulse electric energy to the precursor, enabling the precursor to generate electric explosion, enabling the precursor to generate eigenstate transformation under the action of current density, forming a metal vapor and plasma mixed phase, and after energy storage discharge is finished, performing plasma discharge. Carrying out adiabatic expansion on the high-temperature and high-pressure air mass to generate Megt; 3, along with characteristic electromagnetic radiation, gaseous metal atoms are cooled and gathered on the carrier, and the supported nano-metal catalyst is formed. And collecting in a discharge cavity to obtain a final product, namely the graphene-loaded nano-metal catalyst.

The utility model relates to a water-cooled electrode structure, and belongs to the field of semiconductors. The water-cooling type graphite electrode water-cooling device comprises a third metal sealing flange, a first rubber ring, a water-cooling flange, an insulating ceramic ring, a graphite electrode, a copper electrode, a rotating copper head pressing plate, a rotating copper head, an electrode connector, a pagoda connector, a cold elbow, a cooling water pipe and an insulating rubber ring supporting frame, the insulating ceramic ring is arranged in the water-cooling flange, and the graphite electrode is installed at one end of the copper electrode; one end of the cooling water pipe is located in the copper electrode, the other end of the cooling water pipe is connected with one end of the cold elbow, the other end of the cold elbow is connected with the pagoda connector, one end of the electrode connector is arranged on the rotating copper head, and the third metal sealing flange is arranged outside the copper electrode and between the insulating ceramic ring and the insulating rubber ring supporting frame. A first rubber ring is arranged between the water cooling flange and the third metal sealing flange. The sealing device is reasonable in structural design, safe, reliable and convenient to assemble and disassemble, the service life is prolonged, the sealing effect is improved, and the use requirement is met.

The invention belongs to the technical field of intelligent wearable electronics, and particularly relates to a preparation method of an MXene / CNTs / TPU fiber membrane flame-retardant flexible strain sensor with a bimodal fold structure. The preparation method comprises the following steps: washing and drying a TPU fiber membrane, soaking the TPU fiber membrane in chloroform (CHCl3) for swelling, and fixing and drying the TPU fiber membrane by using a mold; the pretreated fiber membrane is soaked in a cetyl trimethyl ammonium bromide (CTAB) solution to be subjected to modification treatment; then the TPU fiber is put into an MXene / CNTs mixed solution for ultrasonic treatment, so that MXene / CNTs are evenly attached to the surface of the TPU fiber, demolding is conducted after deswelling, and a fiber membrane retracts; and repeating the steps of CTAB (Cetyltrimethyl Ammonium Bromide) modification and MXene / CNTs attachment, so as to prepare the MXene / CNTs bimodal folded conductive fiber membrane with different buckling. Phytic acid (PA) is attached to the surface of the fiber through a repeated impregnation method, then a copper electrode is assembled and packaged with PDMS, and the flame-retardant flexible strain sensor with the bimodal folded conductive structure is obtained.

The utility model relates to the technical field of copper electrode production, and discloses a copper electrode production line intermittent pressing mechanism which is installed on a copper electrode production line, the copper electrode production line comprises a conveying line and a punching machine, the conveying line comprises a supporting seat, and a conveying bottom roller is installed at the top end of the supporting seat. A supporting frame is fixedly connected to the side, away from the punching machine, of the top end of the supporting base, one end of a top frame is hinged to the supporting frame, a conveying top roller is installed on the top frame, and the copper foil belt is located between the conveying bottom roller and the conveying top roller. And the jacking assembly comprises a jacking piece and a driving piece, the jacking piece is arranged on the supporting seat, the driving piece is arranged on the punching machine and moves along with the punching end of the punching machine, and when the driving piece moves downwards, the jacking piece drives the jacking frame to rotate around the hinge point, so that the conveying jacking roller is separated from the copper foil belt. In the copper foil belt stamping process, the conveying roller is separated from the copper foil belt, the copper foil belt is prevented from being pulled in the stamping process, the stamping effect is guaranteed, and the copper foil belt is prevented from being damaged.

The invention relates to a composite coating copper electrode for improving the performance of a C2 product prepared by reducing carbon dioxide through electro-catalysis and a preparation method of the composite coating copper electrode, and belongs to the technical field of catalysis and energy. The core of the invention is to provide a synergistic modification strategy for simultaneous coating of micromolecules and polymers. Specifically, benzotriazole (BTA) and polyvinyl chloride (PVC) are mixed, and the copper surface is coated with the mixture at a time to form the composite coating. Through the synergistic effect of BTA and PVC, key reaction intermediates (such as * COOH and * COCOH) can be effectively stabilized, an electronic structure is optimized, and C-C coupling is remarkably promoted. Experiments show that: Cu-BTAamp; the PVC electrode is arranged in an H-type electrolytic tank, and the Faraday efficiency of the product can be improved from 36% to 71.0 + / -5.6%. In addition, the PVC matrix can effectively package and fix BTA, and the long-term stability of a catalytic system is greatly enhanced. The method is simple, low in cost and high in universality, and a new technical approach is provided for efficient and stable reduction preparation of high-value multi-carbon fuel.