131 results about "Aluminum electrode" patented technology

The invention discloses an aluminum electrolytic capacitor foil prepared from porous aluminum powder, which is a three-dimensional porous aluminum electrode foil, the three-dimensional porous aluminum electrode foil is formed by high-temperature sintering of a foil material consisting of a base layer aluminum foil and a mixture coated on the surface of the base layer aluminum foil, and the mixture is formed by uniformly mixing large-particle porous aluminum powder, small-particle aluminum powder, a binder and a solvent. The invention also discloses a preparation method of the aluminum electrolytic capacitor foil prepared from the porous aluminum powder, which comprises the following steps: S1, stirring the large-particle aluminum powder, 3-30% of hydrogen peroxide and 1-10% of sodium hydroxide solution at the constant temperature of 35-55 DEG C to react, filtering, washing and drying to obtain the large-particle porous aluminum powder; s2, uniformly mixing the large-particle porous aluminum powder, the small-particle porous aluminum powder, the binder and the solvent, coating the surface of the base layer aluminum foil with the mixture, and drying and curing; and S3, sintering the heated and cured foil at high temperature to form the three-dimensional porous aluminum electrode foil. The specific surface area of the powder can be increased through aluminum powder pore forming, and improvement of the foil capacity is facilitated.

The invention discloses a self-powered multi-source energy acquisition and information synchronization integrated sensor, which comprises a piezoelectric sensor, a TENG rotating speed sensor, a bearing and a cover top, the TENG rotating speed sensor comprises a base body, a friction ring and an aluminum electrode, the groove is formed in the base body, and the friction ring is arranged in the groove; the piezoelectric sensor comprises a turntable, a piezoelectric material layer and a circuit module, the aluminum electrode is fixedly connected to the side surface of the turntable, the piezoelectric material layer is arranged on the bottom surface of the turntable, and the circuit module is arranged at the bottom of the turntable; wherein the friction ring is used for generating triboelectric charges through triboelectrification with the rotating aluminum electrode, and the piezoelectric material layer is used for generating cutting force charges under the action of the pressure of the rotating disc. The circuit module is used for respectively converting the cutting force charge and the friction charge into cutting force voltage and friction voltage and sending the cutting force voltage and the friction voltage to an external calculation center to calculate the cutting force, the rotating speed, the rotating direction and the rotating angle of the milling cutter. In an industrial monitoring scene, wiring cost and maintenance workload are reduced, and energy waste is reduced.

The invention relates to the technical field of punching equipment, and discloses an aluminum pole piece punching device which comprises a rack, a movable seat driven by a lifting machine is installed at the upper end of an inner cavity of the rack, a punching mold located over a bearing table is installed at the bottom of the movable seat, and a bearing plate used for containing an aluminum substrate is installed at the upper end of the bearing table; at least one pair of pressing assemblies is installed on the upper end face of the bearing plate and used for pressing at least one set of opposite sides of the aluminum substrate, and an inserting plate is installed at the bottom of the movable base. The inserting plate is inserted into the inserting hole along with descending of the movable base, the movable block is pushed to drive the transmission rack and the threaded rod to rotate, the pressing plate is made to press down and fix the aluminum substrate, manual intervention or complex electrical elements are not needed in the whole process, automatic pressing is achieved through mechanical linkage, the operation intensity is reduced, and potential safety hazards of manual operation are eliminated; meanwhile, shutdown maintenance caused by electrical faults is avoided, and the product quality and the production efficiency are improved.

The utility model discloses a five-axis automatic online sampling device, which belongs to the technical field of electrolytic aluminum electrode carbon block sampling and comprises a control cabinet, a cantilever is arranged at the top of one side of the control cabinet, and a cross beam is arranged on one side of the top of the cantilever; through the sample drilling assembly, the cut-off assembly and the clamping assembly, operation of sample drilling, cut-off, detection of the surface height of a carbon block, clamping of a sample rod and storage of the sample rod can be automatically completed, high automation is achieved, and compared with a traditional manual sampling mode, the sampling time is greatly shortened, the production efficiency is improved, and the production cost is reduced. Meanwhile, workers are liberated from heavy physical labor through automatic operation, only equipment monitoring and simple operation instruction input need to be carried out, workers are prevented from directly making contact with dust and noise sources, the risks that the workers suffer from pneumoconiosis, hearing loss and even deafness are effectively avoided, a healthier working environment is provided for the workers, and the working efficiency is improved. And the cost and risk of enterprises in the aspect of preventing and treating occupational diseases are also reduced.

The present invention relates to a thermoelectric and hygroelectric power generation material based on a metal-phase molybdenum disulfide double-layer conductive fabric, a preparation method and an application thereof. Using metal-phase molybdenum disulfide as the base material, an ammonium ion intercalation hydrothermal method is used to in-situ grow a vertical array of 1T-phase molybdenum disulfide nanosheets on the surface of carbonized silk fibers to construct a p-type semiconductor, which provides abundant nano-channels for the efficient moisture absorption and flow of water, generating a high current density output; using a cotton fabric as the substrate, an n-type semiconductor is constructed by forming a 1T-phase molybdenum disulfide / titanium carbide van der Waals heterostructure on the surface of cotton fibers. The large specific surface area of the 1T-phase molybdenum disulfide / titanium carbide van der Waals heterostructure enables rapid electron migration. The present invention constructs a textile-based thermoelectric and hygroelectric generator through the orderly encapsulation of p-type 1T-phase molybdenum disulfide / carbonized silk, n-type 1T-phase molybdenum disulfide / titanium carbide-cotton fabric and aluminum electrodes, realizing the efficient collection and conversion of low-grade thermal energy and moisture energy, and can be applied to intelligent wearables, flexible sensing and energy conversion.

The utility model discloses a nanosecond pulsed electric field ablation electric shock cup capable of adjusting the distance between electrode plates, which comprises a cup body and an electric shock cup cover, a pair of conductive aluminum electrode plates which are oppositely arranged are arranged at the lower part of the cup body, the electric shock cup cover is arranged on the cup body, the nanosecond pulsed electric field ablation electric shock cup also comprises a movable electrode plate which is adjustably arranged in the cup body, the movable electrode plate comprises an aluminum electrode plate body positioned at the lower part and a polycarbonate plate body positioned at the upper part; a high-voltage-resistant insulating rubber layer is adhered to the right side of the aluminum electrode plate body; the conductive aluminum electrode plate positioned on the left side and the left side of the aluminum electrode plate body are enclosed by a first telescopic insulating rubber sleeve to form a container with an upper opening and a variable space, and the container is used for accommodating a cell suspension; a high-voltage-resistant insulating rubber layer is adhered to the surface of the conductive aluminum electrode plate on the right side; the left side of the aluminum electrode plate body is electrically connected with the conductive aluminum electrode plate located on the right side through a wire.

The invention relates to the technical field of aluminum-air batteries, in particular to an aluminum-air battery stack capable of quickly replacing aluminum plates, which comprises a base, a battery unit and a connector unit arranged above the battery unit, and the battery unit comprises a plurality of monomers arranged in series; the upper end of each single body is provided with an anode female port and a cathode female port with upward openings; each connector unit comprises a connecting plate detachably connected to the top end of the base and a series wire fixed to the connecting plate, the two ends of each series wire are provided with a positive male port and a negative male port with downward openings, and the two ends of each series wire are connected with the negative female port of one single body and the positive female port of the adjacent single body respectively. The cathode male port of the series wire is connected to the cathode female port, and the anode male port is connected to the anode female port; the positive pole male port, the negative pole male port, the positive pole female port and the negative pole female port are all rapid plugging interfaces. According to the invention, the aluminum electrode can be quickly replaced, the uniformity of the electrolyte of the battery unit and the reliability of the stack are effectively improved, and the service life of the battery is ensured.

The preliminary solder forming method is a method for forming preliminary solder on an aluminum electrode formed of aluminum. The preparation solder forming method includes: a disposing step of disposing solder on an aluminum electrode; and a bonding step in which the solder is bonded to the aluminum electrode by melting and solidifying the solder using a laser. In the joining step, the laser light is irradiated such that the energy of the laser light irradiated to the aluminum electrode is greater than the energy of the laser light irradiated to the solder.

The application discloses a thermoelectric pile structure for calibrating a far ultraviolet ultraviolet detector based on MEMS, which comprises a silicon substrate, a support layer, an absorption layer, a thermocouple pair, aluminum wires, aluminum electrodes and a single crystal silicon material structure on the silicon substrate. The double-layer thermocouple stacking structure is adopted to improve the device duty ratio, more thermocouple pairs can be laid in the case of keeping the size of the one-layer structure unchanged, and the response rate of the detector is improved. The circular structure conforms to the distribution trend that the temperature is radially diffused from the center of the absorption layer to the periphery in a decreasing manner, the hot end of the thermocouple pair can be closer to the area with higher temperature, the temperature of the hot end of the thermocouple pair is more uniform, and the response rate of the detector is improved. The radiant energy of the far ultraviolet ultraviolet radiation source is converted into an output thermoelectric electromotive force, a mathematical model of Fourier's law and the Seebeck effect is established for calculation, and the heat flux density of the far ultraviolet ultraviolet radiation source is measured.

The invention discloses a biological photoelectric memristor based on cadmium selenide quantum dots and a preparation method thereof, and the biological photoelectric memristor comprises a transparent substrate, an ITO electrode layer, a cadmium selenide quantum dot layer as a third resistive layer, a starch and gold nanoparticle layer as a second resistive layer, a cadmium selenide quantum dot layer as a first resistive layer, and an aluminum electrode layer. The system has a photoelectric dual-modulation characteristic, not only has a data storage characteristic, but also has a visual perception characteristic, and provides a basis for realizing a sensing, storage and calculation integrated artificial vision system.

A semiconductor device (20) characterized by comprising a semiconductor device (1), and further comprising an emitter electrode (aluminum electrode (2E)) and a gate electrode (aluminum electrode (2G)) on the semiconductor device (1), the emitter electrode being formed with a plated portion (Ni plating layer (3E)) in a manner to cover the emitter electrode, and the gate electrode being formed as a non-plated portion composed of a sputtered film. The non-plated portion is rectangular in plan view, and three corners of the rectangular shape are right-angled. The plated portion opposite to the non-plated portion has an R shape in plan view.

A method of producing a recycled material comprises, in the following order, “(a) preparing an electrode including a base material and an electrode composite material”, “(b) bringing the electrode into contact with an aqueous ammonia solution”, “(c) separating the electrode composite material from the base material”, and “(d) drying the electrode composite material”. In the (a), the electrode composite material is adhered to at least part of the base material. The base material includes aluminum. The electrode composite material includes an active material.

The invention relates to a method for sealing a nickel-free zirconium salt oxide film on an aluminum alloy profile, which mainly solves the problem of poor sealing effect in the prior art. The method comprises the following steps: 1) suspending the aluminum profile in sequence through a suspension assembly and subjecting it to surface pretreatments of sandblasting, oil removal, water washing, alkali washing, water washing, pickling, and water washing; 2) suspending the aluminum profile in an electrolytic tank through the suspension assembly and performing anodizing; 3) air-drying the aluminum profile treated in step 2; 4) suspending the aluminum profile in a sealing tank through the suspension assembly, using an aluminum electrode as an anode and the aluminum profile to be sealed as a cathode and performing pulse power treatment for 25 minutes, while the aluminum profile vibrates and a sealing liquid is circulated and sprayed through a jet steam engine, so that the sealing tank is in an aerated state and the electrolyte temperature is maintained at 70 to 110 degrees Celsius; and 5) cleaning and drying the aluminum profile treated in step 4.

The invention provides a 60KW high-power single-mode semiconductor laser. The 60KW high-power single-mode semiconductor laser comprises an N aluminum electrode shell, a GaN substrate is arranged at the bottom of the inner side wall of the N aluminum electrode shell, an n-ALGaN layer is arranged on the upper surface of the GaN substrate, a first GaN layer is arranged on the upper surface of the n-ALGaN layer, an INGANactive layer is arranged on the upper surface of the first GaN layer, and a second GaN layer is arranged on the upper surface of the INGANactive layer. The GaN substrate and the SiN layer are used as the substrate of the laser to improve the light transition probability, then the n-ALGaN layer and the p-ALGaN layer are used as the epitaxial layers of the laser to improve the voltage resistance of the laser, and then the first GaN layer, the INGANactive layer and the second GaN layer are used to improve the limiting capability of the laser to holes and electrons, so that the performance of the laser is improved. The light wave generated by compounding can be effectively limited, the radiation efficiency is greatly improved, better ohmic contact can be formed between the p-GaN layer and the P aluminum electrode, the ohmic contact resistance and the power consumption of the laser are reduced, and the photoelectric conversion rate of the laser can reach 80%.

The invention provides aluminum electrode corrosion foil by-product-based wet-mixed plastering mortar and a preparation method thereof, and belongs to the technical field of solid waste resource utilization. Calcium hydroxide generated by hydration of cement, calcium sulfate and aluminum hydroxide in the aluminum-containing electrode corrosion foil byproducts and silicon dioxide and aluminum oxide in the fly ash are utilized to generate calcium silicate, calcium aluminate and ettringite gel with cohesiveness and water resistance, the expansion performance of the ettringite gel is utilized, and the corrosion resistance of the aluminum-containing electrode corrosion foil is improved. The cohesiveness and the strength of the mortar are further enhanced, and the crack resistance and the water resistance of the mortar are improved; the dispersing agent is added to improve the dispersity of the raw materials; by adding the air entraining agent, the viscosity of the mortar is reduced, and the crack resistance and toughness are improved; by limiting the mass content of each raw material, the performance of the wet-mixed plastering mortar can meet the standard requirements; and the uniformity and construction performance of the mortar are ensured by limiting the particle size of the aluminum electrode corrosion foil byproduct and the consistency of the wet-mixed plastering mortar.

A thermal head includes a substrate 7, a bonding material 24, an electrically conductive member 11b, and an aluminum electrode 19. The bonding material 24 is positioned on the substrate 7 and contains gold and tin. The electrically conductive member 11b is positioned on the bonding material 24. The aluminum electrode 19 is positioned on the substrate 7 and electrically connected to the electrically conductive member 11b via the bonding material 24.

The invention relates to the technical field of lightning arresters, and discloses a preparation method of a high-performance zinc oxide resistor disc, which comprises the following steps: firstly preparing an Al-ZnO composite material and a BiSbO4 composite material, further dispersing Al-ZnO into water, further adding the BiSbO4 composite material, NiO, Co3O4, Mn3O4, Cr2O3 and anhydrous silicic acid, uniformly stirring, and finally, preparing the high-performance zinc oxide resistor disc. Further adding a dispersing agent, a defoaming agent and a dissolved adhesive, uniformly stirring to obtain a suspension liquid, then preparing the suspension liquid into particles with relatively uniform particle sizes through a spray granulator, and finally, sequentially carrying out tabletting, degumming and pre-sintering, sintering, grinding, heat treatment, aluminum electrode spraying and glazing to obtain the resistor disc. Through the ZnO material doped with Al, Al can enter ZnO crystal grains more easily, the crystal grain resistance of the ZnO crystal grains is reduced, the residual voltage ratio of the resistor disc is reduced, the protection level of the resistor disc is remarkably improved, BiSbO4 prepared through the coprecipitation method replaces traditional bismuth oxide and antimony oxide, the uniformity of the microstructure of the resistor disc can be remarkably improved, and the through-current capacity of the resistor disc is improved.

The invention relates to an underwater self-driving anti-biofouling device and method based on wave current friction nanometer power generation, and belongs to the technical field of underwater structure protection. The underwater self-driving anti-biofouling device comprises a flexible load unit and a flexible carrier; the flexible load unit comprises an aluminum electrode group, a PDMS-C electrode group and a flexible support body, the flexible support body is cylindrical, the aluminum electrode group and the PDMS-C electrode group are respectively arranged at openings at two ends of the flexible support body, and the aluminum electrode group and the PDMS-C electrode group are connected with wires; the flexible carrier is made of soft materials, and the multiple sets of flexible load units are arranged on the flexible carrier. The ocean wave current energy is utilized to generate the alternating electric field, the biological membrane adhesion condition is destroyed, the biological fouling area on the surface of the underwater structure is reduced without an external power supply, and the problems of high pollution, high cost and poor adaptability in the prior art are solved.

A device and method for controlling the thickness of air gap defects for space charge measurement includes an aluminum electrode, a piezoelectric sensor below the aluminum electrode, a test sample lower piece above the aluminum electrode, a rigid partition suspended above the aluminum electrode and the test sample lower piece, the rigid partition having a through test hole and covered by an upper test sample; above the upper test sample, a horizontal bar with adjustable height driven by a vertical measuring instrument is arranged, a micrometer is arranged on the horizontal bar, a high-voltage electrode is arranged below the micrometer, the high-voltage electrode is connected to a high-voltage power supply, and the high-voltage electrode is aligned with the test hole of the rigid partition. The air gap defect thickness control device provided by this invention can achieve micron-level quantitative control of the air gap, effectively evaluating the influence of tiny air gap thickness on space charge distribution.

This invention relates to the field of power battery technology, and particularly to a current collector, a current collector manufacturing process, a sodium-ion battery, and an assembly method. The current collector connects the negative electrode tab of a sodium-ion all-tab battery to a steel casing. It includes an aluminum sheet, a nickel sheet, and a nickel block. The aluminum sheet has mounting holes, and the nickel sheet is stacked and fixed to the aluminum sheet to form a nickel-aluminum composite layer. The nickel block is inserted into the mounting holes and fixedly connected to the nickel sheet. The current collector is composed of aluminum and nickel sheets. The aluminum sheet can be welded to the aluminum electrode tab, and the nickel sheet can be resistance welded to the steel casing, achieving a stable connection between the aluminum electrode tab and the steel casing. The nickel block inserted into the mounting holes on the aluminum sheet and fixedly connected to the nickel sheet not only improves the stability of the connection between the aluminum and nickel sheets and increases the current carrying capacity, but also indirectly increases the local thickness of the nickel sheet, which is beneficial for resistance welding between the nickel sheet and the steel casing.

The application discloses a preparation method of a back junction solar cell and the back junction solar cell. The preparation method comprises the following steps: forming a plurality of holes in an array arrangement on a front surface passivation anti-reflection layer of a P-type silicon substrate; arranging aluminum paste in the holes; performing first sintering on the P-type silicon substrate with the aluminum paste in the holes at 700 DEG C-950 DEG C, so as to form a P+ heavy-doped local front surface field, an aluminum electrode and an oxide layer covering the aluminum electrode; stripping the oxide layer covering the aluminum electrode; printing a plurality of silver paste lines on the front surface passivation anti-reflection layer, the silver paste lines being in contact with the front surfaces of the aluminum electrodes with the oxide layer stripped, and the silver paste lines being connected with the aluminum electrodes with the oxide layer stripped; and performing second sintering on the P-type silicon substrate with the silver paste lines, so that the sintering temperature of the second sintering is lower than the melting point of aluminum, and a silver electrode and the aluminum electrodes connected with the silver electrode form a front surface fine grid line of the back junction solar cell. The light-electricity conversion efficiency of the back junction solar cell is effectively improved.

The invention discloses a single-sided minimum coherence full-penetration three-dimensional winding type trench electrode detector, which comprises a silicon substrate, and the silicon substrate is of a cuboid structure. The center of the silicon substrate is provided with a central anode, and the periphery of the silicon substrate is provided with a trench cathode; a cathode aluminum electrode contact layer covers the outer side surface of the upper part of the trench cathode; an anode aluminum electrode contact layer covers the outer side surface of the upper part of the central anode; except a groove cathode etching area, a cathode aluminum electrode contact layer and an anode aluminum electrode contact layer covering area, the upper surface of the silicon substrate is covered with an upper surface SiO2 layer. The lower surface of the silicon substrate is covered with a lower surface SiO2 layer except a groove cathode etching area and a central anode area which is not covered with the anode aluminum electrode contact layer. The problems that polycrystalline silicon filling is complex, the double-face etching difficulty is large, and a single-face structure is prone to falling off are solved, cost is reduced by simplifying manufacturing, dead zones are reduced through self-supporting design, and the charge collection efficiency and the response speed are improved by optimizing an electric field through the fully-penetrating electrodes.

The present invention belongs to the technical field of battery sealing, and discloses an aluminum electrode connection and sealing device for an aluminum-air battery, including a sealing shell. A battery body is arranged inside the sealing shell. An electrode body is fixedly installed at the top end of the battery body. A sealing plate is sleeved on the surface of the top end of the sealing shell. A wire outlet hole is opened at the top end of the sealing plate; in the present invention, the slider drives the connecting plate and the insertion block to move into the insertion hole, and then the insertion block enters the insertion hole, thereby fixing the sealing plate on the surface of the top end of the sealing shell. The sealing plate can seal the battery body and the electrode body. Finally, by rotating the rotating disk, the insertion block enters the insertion hole, so that the battery body and the electrode body can be sealed without using fixing bolts, effectively preventing dust, moisture and other impurities from entering the battery, ensuring the normal operation of the battery and extending its service life.

The invention belongs to the technical field of photovoltaic module recovery, and particularly relates to a method for recovering silver from an out-of-service photovoltaic module. The method comprises the following steps: 1) disassembling a retired photovoltaic module, removing an aluminum frame and a junction box, and cutting the retired photovoltaic module into blocks by using an angle grinder; (2) putting the assembly into a muffle furnace, calcining at 500 DEG C for 1.5-2 hours, and removing the EVA adhesive film and the back plate to obtain toughened glass, a welding strip and a battery piece; 3) performing ultrasonic cleaning on the battery piece by using deionized water, airing the battery piece, placing the battery piece in a liner of a hydrothermal kettle, adding a tetramethylammonium hydroxide aqueous solution, and performing heating reaction at 80-100 DEG C for 0.8-1.2 hours to enable the silver grid line to be stripped from the surface of a silicon wafer; and 4) separating the silver grid line from the silicon wafer, respectively washing with absolute ethyl alcohol, and drying to obtain the silver grid line and the silicon wafer. According to the method, the low-concentration tetramethylammonium hydroxide aqueous solution is adopted, the silver grid line can be stripped and the aluminum electrode can be leached at the same time through heating at a relatively low temperature, and the residual silicon wafer is relatively complete.

A semiconductor component (20) is characterized by being provided with a semiconductor device (1), an emitter electrode (aluminum electrode (2E)) and a gate electrode (aluminum electrode (2G)) being provided on the semiconductor device (1), a plating part (Ni plating layer (3E)) being formed on the emitter electrode so as to cover the emitter electrode, the gate electrode being formed as a non-plated part composed of a sputtered film. The non-plated part has a rectangular shape in a plan view, and three corners of the rectangular shape are right-angled. The plating part facing the non-plated part has an R shape in a plan view.

The invention discloses a core-shell colloidal quantum dot diode of a zinc-indium-sulfur gradient layer and a manufacturing method, and belongs to the field of light-emitting device research. A copper-indium-gallium-sulfur core quantum dot is synthesized through a thermal injection method, a zinc-indium-sulfur gradient layer and a zinc sulfide shell layer are sequentially grown on the surface of the copper-indium-gallium-sulfur core quantum dot to form a core-shell structure, and the zinc-indium-sulfur gradient layer optimizes the surface energy state of the quantum dot, reduces non-radiation quenching, improves the photoluminescence quantum yield and maintains narrow-band emission. And the copper-indium-gallium-sulfur quantum dots without heavy metals are adopted, so that the method is environment-friendly. During preparation, the indium tin oxide substrate is cleaned and subjected to plasma treatment, the aluminum electrode is deposited after each functional layer is spin-coated, the external quantum efficiency of the prepared light-emitting diode reaches 2.4%, the size of the quantum dots is about 3 nanometers, and the light-emitting wavelength can be regulated and controlled through the size and composition. The light-emitting diode is suitable for the fields of display and illumination, and has the advantages of high efficiency and environmental protection.

The invention discloses a preparation method of a three-dimensional blue-light perovskite thin film and a light-emitting diode thereof. The preparation method comprises the following steps: preparing a perovskite precursor solution, selecting ITO as a conductive substrate, spin-coating a PEDOT: PSS solution on the ITO conductive substrate, and carrying out annealing treatment to form a hole transport layer; spin-coating a perovskite precursor solution, and carrying out annealing treatment to prepare a three-dimensional halogen-mixed perovskite thin film as a perovskite light-emitting layer; carrying out vacuum thermal evaporation on TPBi to form an electron transport layer; performing vacuum thermal evaporation on lithium fluoride to form a cathode modification layer; and carrying out vacuum thermal evaporation on a metal aluminum electrode on the cathode modification layer to obtain the light-emitting diode of the three-dimensional halogen-mixed blue-light perovskite thin film. According to the preparation method of the light-emitting diode of the three-dimensional halogen-mixed blue-light perovskite thin film, trimethyl cyanurate is introduced into a three-dimensional halogen-mixed perovskite precursor solution, internal defects of perovskite are passivated, non-radiative recombination is inhibited, and the device has excellent charge transmission performance and good device performance.

A method for purifying acidic wastewater from a mining process, the method comprising pretreating (12) the acidic wastewater to obtain pretreated wastewater (16), providing a water purification apparatus (30) comprising an electrolytic cell (14) comprising a substantially vertical tube connected to a source of electric power (13) and comprising one or more first electrode(s) (2) comprising one or more iron and / or aluminum electrode(s), and one or more inert second electrode(s) (4), and a substantially vertical separator tower (20) arranged in a flow connection with the electrolytic cell, applying the pretreated wastewater (16) to the electrolytic cell (14), operating the electrolytic cell (14) to produce iron hydroxide and / or aluminum hydroxide (3) acting as molecular sieve capable of trapping impurities, such as comprising sulphates and any remaining solids, and to produce hydrogen causing the molecular sieve with the trapped impurities to raise in the vertical tube as an accumulating floc, conveying the raising floc into the separator tower (20), wherein the floc (5, 19) is separated by expelling from the top of the separator tower (15), and obtaining first purified water (W1) from the separator tower (20) from below the raising floc. A water purification apparatus (30) and use of the water purification apparatus.

The application discloses an isolation material, a battery back field back pole and a preparation method, and a solar cell and a preparation method, and belongs to the technical field of crystalline silicon solar cell preparation. The back field back pole comprises a silicon back surface base, an aluminum electrode and a silver electrode. The aluminum electrode is arranged on the silicon back surface base. The silver electrode is arranged on the aluminum electrode. An isolation layer is arranged between the silver electrode and the aluminum electrode. The isolation layer is composed of the following components: glass powder, auxiliary powder, an organic carrier and an additive. The weight percentage of the glass powder is 35-80%. The weight percentage of the auxiliary powder is 0.5-25%. The weight percentage of the organic carrier and the additive is 15-45%. The application inserts an isolation layer between the silver electrode and the aluminum electrode, blocks the direct contact of the silver electrode and the aluminum electrode, effectively isolates the mutual penetration of the silver paste and the aluminum paste in the sintering process, and realizes the improvement or solution of the performance of the full-aluminum back field battery, such as the quality of the battery, the welding of a module and reliability.

The invention provides a device and method for rapidly cleaning hydroxyapatite shells with array aluminum electrodes, and relates to the technical field of hydroxyapatite cleaning. The device comprises a water tank body, a grid funnel and a base, the water tank body is provided with a water conveying pipe, a transparent safety cover and a drainage pipe, the grid funnel is provided with a semicircular lifting ring, the base comprises a propeller, an array aluminum electrode and a motor, the array aluminum electrode electrolyzes water to generate strong oxidizing ions and a strong alkaline environment, and the strong oxidizing ions such as OH <-> generated by electrolysis are used for generating strong oxidizing ions. Organic matters attached to the surface of the shell can be quickly oxidized and decomposed into water-soluble small molecular substances, dirt stripping is realized, a large amount of OH <-> generated by electrolyzing water enables a water body to be strongly alkaline, inorganic impurities on the surface of the shell can be softened, meanwhile, the adhesive force between the dirt and the surface of the shell can be weakened, and the impurities can be washed away more easily; and the structure of hydroxyapatite is not damaged. The device can quickly, automatically and efficiently clean shells, and the cleanliness and the environmental protection property in the shell cleaning process are improved.