37results about How to "Reduce reversibility" patented technology

A negative electrode material, a method for producing this material, and to a negative electrode and a lithium-ion battery comprising this material are described. The material comprises an active phase consisting of a material M based on Al, Si, Sn, Sb or a mixture thereof, and a support phase consisting of a material XaYbOc, where: O is an oxygen; Y is a cation with oxidation degree m=3, 4, 5 or 6; X is a cation with oxidation degree d=1, 2, 3, 4 or 5, X ensuring the electroneutrality of XaYbOc; and where: c is such that 2≦c≦10; b is such that 1≦b≦4; and a=(2c−bm) / d. An interface of mixed composition exists between the XaYbOc material and the active phase M, the interface consisting of the elements M, X, Y and O.

The invention relates to the technical field of fluorine chemicals and in particular relates to electron-grade hydrogen fluoride preparation procedures which are characterized by comprising an evaporation circulation oxidation reaction procedure, a circulating fluidized bed distillation procedure and a washing, absorption and condensation procedure.

The invention discloses a triangular paper folding device and method for paper jams and an automatic regulating mechanism. The automatic regulating mechanism comprises a conveyor belt, the triangular paper folding device, a mounting plate, a transmission component, a first drive device and a second drive device, wherein one end of the mounting plate is connected with the triangular paper folding device, and the other end of the mounting plate is connected with the transmission component; the transmission component is connected with the first drive device and the second drive device. The triangular paper folding device comprises a triangular paper folding block, a horizontal paper folding assembly and an oblique paper folding assembly, wherein the surface, needing to be turned over, of paper is turned over by 90 degrees through the triangular paper folding block, the paper continues to be turned over by 90 degrees by the horizontal paper folding assembly and the oblique paper folding assembly, and then paper folding is completed. The first drive device is used for regulating the horizontal position of the triangular paper folding device, and the second drive device is used for regulating the vertical position of the triangular paper folding device. The triangular paper folding device is simple in structure, low in cost, convenient and reliable to regulate and high in degree of automation, and improves the paper folding precision.

The invention relates to the technical field of fluorine industry, in particular to an application method of a circulating fluidized bed degasser for preparation of hydrogen fluoride. The applicationmethod is characterized in that a hydrogen fluoride liquid with heavy components H2SO4 and H2O removed through rectification enters the device through a feed liquid pipe designed at the central part of a circulating fluidized bed degassing tower and is injected into a liquid receiving tray; when the hydrogen fluoride liquid flows down to a primary fin plate, volatile components SO2, SiF4, CO2 andH2S are vaporized to form rising steam; and the purity of the non-volatile hydrogen fluoride liquid which is condensed by a multi-stage cyclone separation condenser and enriched at the bottom of the tower is continuously increased, thus achieving the purpose of removing light components.

The invention discloses a multi-column strip-shaped packaging machine, which comprises a rack, and a paper supporting part, a filling and metering device, a bag forming mechanism, a middle sealing device, a horizontal sealing device, a cutter device, a bag turnover mechanism and a sliding chute arranged on the rack. The cutter device comprises cutter support plates, two cutter shafts, cutters, support rods and bag guiding supports; the two cutter shafts are arranged on the cutter support plates at an interval; the cutters are arranged on the cutter shafts; the two cutter shafts are connected with air cylinders; the support rods are arranged between the two cutter support plates, and are located above the cutters; the bag guiding supports are arranged on the support rods; and loaded packaging bags are cut by the cutters after passing through the bag guiding supports. According to the multi-column strip-shaped packaging machine provided by the invention, the loaded packaging bags are limited through the bag guiding supports and can be smoothly fed into a position between the cutters so as to be cut.

The invention relates to the technical field of fluorine chemical industry, in particular to a method for preparing hydrogen fluoride circulating fluidized bed rectification device, which is characterized in that: the crude hydrofluoric acid liquid flows from the feed liquid conduit designed in the middle of the circulating fluidized bed rectification tower Enter and inject into the liquid receiving plate, the crude hydrofluoric acid liquid is evenly distributed in the liquid plate and then drips into the reboiler. The disk enters the multi-stage cyclone condenser, and the liquid droplets carried by the rising steam are separated by the cyclone to form a continuous liquid film on the wall of the multi-stage cyclone condenser. The purity of the hydrogen fluoride liquid condensed by the condenser is continuously improved and drawn out from the bottom.

A shear strain type pressure sensor, comprising a housing, the magnetic field generating device in the housing has two opposite magnetic poles and corresponding to each other, a shearing plate is arranged in the space between the two magnetic poles, and the shearing plate One side of the shear plate is fixed with a rubber sheet, which is in full contact with the magnetic end surface of the first magnetic pole of the two magnetic poles, and the other side of the shear plate is fixed with a first electrode, and the first electrode is fixed with a magnetorheological Elastic body, the other side of the magnetorheological elastic body is fixed with a second electrode, the second electrode is fixed to the magnetic pole surface of the second magnetic pole in the two magnetic poles, the first electrode, the second electrode and a signal conditioning module Electrically connected, one end of the shearing plate extends upwards through an S-shaped force-measuring member and then protrudes from the upper surface of the housing, and the housing is fixed with a support plate for supporting the S-shaped force-measuring member. A stopper is arranged on the plate, and the lower end surface of the stopper is in contact with the upper end surface of the S-shaped force-measuring piece. It has high resolution, high sensitivity and large force range.

The invention relates to a carbon-supported nickel catalyst-doped Mg(BH4)2-based hydrogen storage material and a preparation method thereof, and belongs to the technical field of hydrogen storage materials for fuel cells. The preparation method comprises the following steps: 1, mixing: adding an additive into a matrix at a certain mass percentage, and mixing the matrix and the additive to obtain auniform mixture, wherein the matrix is Mg(BH4)2 powder, and the additive is a carbon-supported nickel catalyst; and 2, performing high-energy ball milling: adding the mixture obtained in the mixing step into a ball milling tank, and performing high-energy ball milling to obtain the hydrogen storage material. The preparation method has the advantages of easiness in purchasing or preparing the rawmaterials, and realization of simple and conveniently operated preparation process by adopting a high-energy ball milling technology; and the obtained material has the advantages of regular shape, uniform size, improved hydrogen release performance, realization of the initial hydrogen desorption temperature being lower than 130 DEG C, fast hydrogen desorption kinetic performances and improved reversibility.

The invention relates to the technical field of fluorine chemical engineering, in particular to an application method for preparing an electronic grade hydrogen fluoride process device. The method ischaracterized in that high-boiling residues HAsF6 and MAsF6 are produced through arsenic impurity in fluorine oxidized hydrogen fluoride, and the pure electronic grade hydrogen fluoride is separated from a multi-component composition through volatility difference of the high-boiling residues HAsF6 and MAsF6, HF and other components and multiple equilibrium processes. A rectification technical process adopts reflux liquid and upward gas to form gas and liquid countercurrent contact in a distillation tower, volatile component products with high purity can be obtained from the top of the tower, and non-volatile component products with high purity can be obtained from the bottom of the tower. The main component of tail gas produced from hydrogen fluoride rectification mainly comprises HF steam, the tail gas further comprises the following volatile components: SO2, SiF4, PF3, POF3, AsF5, SF6 and PF5, and the tail gas can be completely washed with pure water, condensed and recycled to prepare technical grade hydrofluoric acid.

A metal negative electrode secondary battery at least includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode at least includes a support and a first metal. The support at least includes a carbon particle. The carbon particle is provided with a plurality of open pores. The first metal is held in the open pores. The first metal is an alkali metal or an alkaline earth metal. The negative electrode is configured to exchange an electron through dissolution reaction and deposition reaction of the first metal.