33results about How to "Good reversibility" patented technology

This invention belongs to the technical field of power equipment operation and maintenance, power distribution line construction, and high-altitude operation machinery. A pole-mounted transformer replacement device based on a truck-mounted crane is characterized by comprising a main frame and support system, a translational load-bearing system, a chain drive system, and a vertical lifting and centering system. The main frame and support system includes a main load-bearing frame, stabilizing legs, and lifting lugs. The translational load-bearing system includes a translational load-bearing platform and a linear guide rail slider assembly. The chain drive system mainly consists of a geared motor, a drive gear, a driven gear, a short transmission chain, a drive sprocket shaft, a bearing support seat, a long transmission chain, and a reducer mounting support. The vertical lifting and centering system includes a centering mechanism, a vertical lifting mechanism, and a vertical lifting support plate. The centering mechanism includes a horizontal drive motor, a horizontal push rod mechanism, and a guide bracket. This device can be transported by truck, deployed quickly, and is suitable for operation in confined and electrified environments.

The application discloses a method for manufacturing a colorimetric sensing unit and array by using a multi-target Bayesian optimization algorithm. Different formulations of colorimetric sensing units are initially prepared on a hole plate; the hole plate is dried, and the dried hole plate is introduced into a gas test to obtain the values of response time, reversibility, responsivity and sensitivity of each formulation; the values of response time, reversibility, responsivity and sensitivity of each formulation are processed by a Sigmoid function to obtain score values, which are substituted into a multi-target Bayesian optimization algorithm to generate a next round of formulation; colorimetric sensing units are prepared on the hole plate according to the formulation; the steps are repeatedly cycled, and the number of cycles reaches a stop condition to obtain a global optimal formulation; and colorimetric sensing units are prepared according to the global optimal formulation. The method solves the problem that multiple indexes of a sensor are simultaneously optimized and some indexes are easily neglected, and can quickly optimize a CO2 colorimetric sensing array which simultaneously has wide range, high sensitivity, fast response and high reversibility.

The application discloses a zinc battery negative electrode material, a preparation method thereof and a zinc ion battery. The zinc battery negative electrode material is a composite of a carbon base material and zinc nanoparticles; the carbon base material is a porous carbon material with through nano or sub-micron channels, the zinc nanoparticles are distributed in the channels of the carbon base material, the surface of the zinc nanoparticles is wrapped by a carbon network, and the carbon network anchors the zinc nanoparticles in the channels of the carbon base material. A pulse mode is adopted to alternately introduce zinc sources and carbon sources, and interval purging is performed after each introduction; in view of the unique physical and chemical characteristics of zinc, a synergistic process of "functional group guidance-pulse deposition-immediate anchoring" is designed, so that the deposition of zinc nanoparticles and the growth of the carbon network are alternately performed. The zinc battery negative electrode material can not only inhibit the growth of zinc particles in a long-term electrochemical cycle process, improve the utilization rate of zinc, but also reduce the direct contact area of zinc and electrolyte, and is helpful to inhibit the occurrence of side reactions such as hydrogen evolution.

This invention discloses an aluminum-containing heavy water-based electrolyte, its preparation method, and its applications. The electrolyte comprises a solvent and a solute. The solvent includes heavy water, a deuterated solvent, and a low-barrier hydrogen bond reconstructing agent. The solute comprises a main aluminum salt and an auxiliary monovalent metal salt. This electrolyte can construct low-barrier hydrogen bonds in solution by controlling the solvent composition, significantly reducing the activity of water in the solution, improving the electrochemical stability of the solution, and suppressing side reactions. Simultaneously, it improves the electrochemical reaction behavior of aluminum in the solution and at the electrolyte / electrode interface, which is beneficial for improving the electrochemical deposition efficiency of aluminum in aqueous solution.

This invention discloses a zinc battery anode material, its preparation method, and a zinc-ion battery. The zinc battery anode material is a composite of a carbon substrate and zinc nanoparticles. The carbon substrate is a porous carbon material with through-hole nano- or submicron pores. The zinc nanoparticles are distributed within the pores of the carbon substrate, and their surfaces are encapsulated by a carbon network, which anchors the zinc nanoparticles within the pores of the carbon substrate. A synergistic process of "functional group guidance—pulse deposition—instant anchoring" is designed, taking into account the unique physicochemical characteristics of zinc, to achieve alternating deposition of zinc nanoparticles and growth of the carbon network. This zinc battery anode material not only inhibits zinc particle growth and improves zinc utilization during long-term electrochemical cycling, but also reduces the direct contact area between zinc and the electrolyte, helping to suppress side reactions such as hydrogen evolution.

The invention relates to the technical field of optical element precision manufacturing, in particular to an optical element three-dimensional modeling method based on normal projection inverse transformation. Comprising the steps of establishing an ideal curved surface parameterization vector expression according to optical design parameters, and determining a curved surface body coordinate system and a vector height function; solving the gradient of the rise function to obtain gradient information of each point of the curved surface and calculating a unit normal vector; projecting the three-dimensional curved surface points to a preset reference plane along the normal direction of the curved surface, establishing a forward geometric mapping relation from the three-dimensional coordinates of the curved surface body coordinate system to the measurement coordinates of the interferometer, and obtaining an explicit expression of the measurement coordinates; two-dimensional normal error distribution data of the optical element are collected, errors are overlaid in the normal direction to construct an actual curved surface expression containing manufacturing errors, and the corresponding relation between three-dimensional normal errors and measurement data is established; and on the basis of forward mapping relation numerical value inverse transformation, the measurement coordinates are inversely calculated into curved surface body coordinates, and the curved surface body coordinates are substituted into an actual curved surface expression to obtain a complete three-dimensional curved surface model containing manufacturing errors.

The invention provides a negative electrode current collector, a preparation method thereof and an all-solid-state battery. The negative electrode current collector comprises a substrate layer, a first coating and a second coating which are sequentially stacked, the first coating comprises a composite material with a first metal and MXene carbide, and the second coating comprises a second compound; wherein the first metal comprises at least one of silver, gold, tin, zinc, lead or bismuth; the general formula of the MXene carbide is Mn + 1CnTx, M comprises at least one of titanium, vanadium, niobium, molybdenum, tantalum, chromium, zirconium, hafnium, scandium or tungsten, n is equal to 1-3, and Tx comprises at least one of-OH,-O or-F; the second compound comprises at least one of aluminum oxide, magnesium oxide, lithium fluoride, magnesium fluoride, calcium fluoride or boron nitride. The negative electrode current collector, the preparation method thereof and the all-solid-state battery provided by the invention are simple in structure, convenient to manufacture and high in stability, and can improve the battery performance and prolong the service life.

This invention discloses an integrated device for in-situ power generation and extraction of coal seam gas and its usage method, relating to the field of coal seam gas control and utilization technology. An underground in-situ installation mechanism is used for anchoring coal seam boreholes and includes a gas storage chamber. A gas pretreatment mechanism is located inside, performing multi-stage purification of the raw gas entering the storage chamber. An outlet pipe connects to the storage chamber. A first negative pressure generating mechanism is detachably connected to the outlet pipe, generating negative pressure in the storage chamber in a first operating mode. A mechanical extraction mechanism can replace the first negative pressure generating mechanism, switching to a second operating mode. A bidirectional electrochemical energy conversion mechanism is connected to the underground in-situ installation mechanism and the storage chamber; in the first operating mode, it generates electricity using high-concentration gas, and in the second operating mode, it produces methane using electrical energy. An integrated control system is electrically connected to each mechanism, coordinating operation according to a preset program or remote commands to achieve switching between the two operating modes and stable operation. This invention enables the coordinated operation of in-situ collection, power generation, and extraction of coal seam gas.

The invention discloses a neutral zinc-iodine flow battery electrolyte composition based on two-electron reaction and application thereof, and belongs to the field of flow batteries. Zinc salt, iodized salt, acetate, a specific amine compound and a supporting electrolyte are adopted as main active components of the electrolyte. According to the amine compound used in the electrolyte, an active substance iodine on the positive electrode side of the battery can be subjected to a two-electron transfer reaction, so that a reversible oxidation-reduction reaction from-1 valence iodine to + 1 valence iodine is realized. Compared with the original irreversible multi-electron transfer reaction, the two-electron transfer reaction has higher reversibility, two reversible charging and discharging platforms can exist, the energy efficiency of the battery can be remarkably improved, and the application of the zinc-iodine flow battery based on the multi-electron transfer reaction is facilitated.

The application discloses a kind of ancient ship rotten wood protection repair method, for the pine, fir, camphor wood on ancient ship, after the oxidation-reduction reaction of iron and the oxidation of reduced state sulfur, cause the degradation and rotten of wood, with micro-nano lime and ethyl cellulose deacidification reinforcement;For the crack and incomplete parts of ancient ship, make into imitation wood grain paste with tung oil etc. and fill the vacancy;For broken wood block, make into rotten wood adhesive with tung oil etc. and bond;For the ancient ship protection after repair, use fluorine rubber as sealing agent, provide a good environment for cultural relics, achieve waterproof, mildewproof, insect prevention and other effects.The method of the application replaces the traditional polyethylene glycol penetration spray method, rosin paraffin hot infiltration method, polyvinyl alcohol, polyethylene glycol penetration reinforcement, spraying raw tung oil, raw lacquer, B72 and epoxy resin and other protection methods, and uses fluorine rubber as ancient ship sealing agent, achieves the purpose of traditional and modern material combination of cultural relic protection "repairing old as old, minimal intervention".

This invention relates to the field of secondary battery technology, and discloses an inorganic superionic conductor material, its preparation method, and its applications. The inorganic superionic conductor material comprises apatite and dopant ions doped into the apatite; wherein the dopant ions include metal cations and non-metal anions. The inorganic superionic conductor material provided by this invention can be used as a modified filler to achieve synergistic effects on electrolyte mechanical and electrochemical performance. Simultaneously, it can be introduced as a modifier into iodine cathodes to activate the 4-electron reaction of the iodine cathode, and introduced into bromine cathodes to stabilize the redox reaction of bromine, reducing bromine loss, thereby significantly improving the capacity and cycle stability of the full battery. Furthermore, by using 3D printing technology, screen printing, digital light processing, and fused deposition modeling, the inorganic superionic conductor material can be assembled with interdigitated positive and negative electrodes into flexible batteries, exhibiting excellent application effects when integrated with flexible LEDs.

The application discloses a three-dimensional tower-shaped zinc negative electrode for aqueous zinc ion batteries and a preparation method and application thereof, and relates to the technical field of aqueous zinc ion batteries. The preparation method comprises the following steps: taking a copper foil as a working electrode, a zinc sheet as a counter electrode, and placing the copper foil and the zinc sheet in an electroplating solution to perform electroplating; after the electroplating is completed, a zinc plating layer is formed on the surface of the copper foil, and thus the three-dimensional tower-shaped zinc negative electrode for aqueous zinc ion batteries is obtained; and the electroplating solution is composed of a conductive salt, a zinc salt, isomalt and water. In the application, the copper foil is taken as the working electrode, the zinc sheet is taken as the counter electrode, the electroplating solution composed of the conductive salt, the zinc salt and the isomalt is adopted, and the zinc layer is electroplated on the surface of the copper foil through the electroplating process. The zinc plating layer has a clear three-dimensional tower-shaped structure, can provide stable sites for the deposition / dissolution of zinc, buffer volume changes, inhibit the growth of dendrites and corrosion from the structural and chemical aspects, and thus the cycle stability and safety performance of the aqueous zinc ion battery are improved.

This invention discloses a P2-type NaCrFeTi layered oxide, which is obtained by high-temperature solid-state sintering using sodium carbonate, iron oxide, chromium oxide, and titanium dioxide as raw materials. 0.67 Cr 1 / 3 Fe 1 / 3 Ti 1 / 3O2 layered oxide NCFT-33 / 33; belonging to the P2 phase structure of the P63 / mmc space group; microstructure is a hexagonal prism structure with a particle size of 1-3 micrometers, exhibiting a single-crystal structure; the main phase content reaches over 95%. Its preparation method is a one-step sintering method, where raw materials are ball-milled and mixed according to the chemical formula ratio, followed by sintering and natural cooling. When used as a sodium-ion battery anode material, the reversible specific capacity is 60.00-80.00 mAh g. ‑1 When the number of cycles is 3000, the capacity retention rate is 91-93%, and the capacity loss rate per cycle is only 0.0023-0.0030%.

The invention belongs to the technical field of electrochemical energy storage batteries, and particularly relates to a chlorine-free simple magnesium salt electrolyte for a magnesium-sulfur battery as well as a preparation method and application of the chlorine-free simple magnesium salt electrolyte. The electrolyte comprises magnesium salt, ionic liquid, an organic ether solvent, an amine solvent and an organic phosphide additive. The solvation structure is regulated and controlled through the synergistic effect of multiple components, the compatibility of the electrolyte with the sulfur positive electrode and the magnesium negative electrode is improved, and the electrochemical performance of the magnesium-sulfur battery is improved. Specifically, the amine solvent is used as a strong polar solvent to improve the solubility of the magnesium polysulfide, so that the diffusion and redox conversion kinetics of the magnesium polysulfide are promoted, and the organic phosphide is used as an additive to effectively improve the specific discharge capacity and voltage platform of the magnesium-sulfur battery. Meanwhile, due to the addition of the ionic liquid, the stability of a magnesium negative electrode / electrolyte interface is improved, the transmission capacity of Mg < 2 + > is enhanced, and the overpotential of magnesium deposition / dissolution is reduced. In addition, the electrolyte does not contain chloride ions, so that the corrosion problem caused by the chloride ions is avoided.

The application discloses a force-induced color change and acid-induced color change liquid crystal elastomer film and a preparation method and application thereof, and belongs to the technical field of liquid crystal elastomers. The method comprises the following steps: mixing an acrylic ester liquid crystal monomer, an acrylic ester acid-induced color change dye and a liquid crystal chiral agent, and then standing at room temperature to form a first mixture; mixing a polysulfane, a dithiol, a photoinitiator and a pre-diluted thermal initiator in a toluene solution to form a second mixture; mixing the first mixture and the second mixture, and then sequentially performing a parallel orientation click reaction and a self-polymerization reaction in a light-shielded and ultraviolet light irradiation environment, so that the force-induced color change and acid-induced color change liquid crystal elastomer film is obtained. The method can make the liquid crystal elastomer have both the force-induced structural color performance and the acid-induced color change pigment color performance, has a wide color change range and rich color information, and can effectively improve the mechanical performance of the liquid crystal elastomer, so that the liquid crystal elastomer can maintain good reversibility when the stretching length is 100%.

The invention discloses a flexible wireless humidity respiration sensor based on ultrahigh frequency and a preparation method and application thereof. The preparation method comprises the following steps: providing a flexible tag antenna with an RFID chip; a first windowing mask plate is attached to the tag antenna, an aluminum layer at the windowing position of the first windowing mask plate is removed through mechanical scraping, and a second windowing mask plate is attached; a mixed solution of Ti < 3 > C < 2 > T < x > MXene and GO is dripped into the windowing holes of the second windowing mask plate and the first windowing mask plate, and after drying, the flexible wireless humidity respiration sensor based on the ultrahigh frequency is obtained. The MXene and GO mixed humidity-sensitive sensing material is adopted, the resistance change response capability is improved, and the sensitivity of the humidity respiration sensor is enhanced; meanwhile, the ultrahigh frequency tag antenna is adopted, and the purpose of long-distance wireless passive humidity-sensitive sensing is achieved.

The invention discloses a composite additive for a zinc ion battery electrolyte, the zinc ion battery electrolyte as well as a preparation method and application of the zinc ion battery electrolyte. The composite additive comprises a carbon nano tube and an anionic surfactant, and the carbon nano tube and the anionic surfactant can generate micelle action to form nano micelle particles. The zinc ion battery electrolyte comprises zinc ions and the composite additive for the zinc ion battery electrolyte. The composite additive disclosed by the invention has multiple functions, and can finally realize multifunctionality of inducing uniform nucleation of zinc at an interface and retarding dendritic crystals and various side reactions through multiple mechanisms such as regulation and control of an H bond network of water molecules, improvement of a hydrated zinc ion solvation structure, generation of a shielding layer after adsorption on the surface of a negative electrode, regulation and control of an electric field and the like. The zinc ion battery electrolyte realizes dendrite-free stable circulation of a zinc negative electrode in a symmetrical battery assembled by using the zinc ion battery electrolyte under various current densities and surface capacities, and the cycle life of the negative electrode is greatly prolonged.

The invention discloses an aqueous zinc-iodine battery electrolyte additive, an electrolyte preparation method and an aqueous zinc-iodine battery preparation method, 3-chloro-2-hydroxypropyl trimethyl ammonium chloride is used as a multifunctional electrolyte additive, and reversible four-electron conversion reaction is realized by synergistically regulating and controlling a zinc ion solvation structure and stable iodine positive ions, so that the zinc-iodine battery electrolyte additive is obtained. The energy density and the cycling stability of the water-based zinc-iodine battery are greatly improved, and dendritic crystal generation and side reaction can be inhibited. The electrolyte is composed of ZnSO and CHPTAC, and the pH value of the electrolyte is 5-6. The positive electrode of the iodine battery adopts a current collector-free structure, and a self-supporting electrode is prepared by compounding iodine and activated carbon and combining with carbon nanotube slurry. The zinc-iodine total battery constructed by the electrolyte and the iodine positive electrode has remarkable performance advantages.

This invention discloses the preparation and application of a porous bismuth ferrite material. The preparation method includes the following steps: dissolving bismuth and iron salts in an acid solution to obtain a metal solution; adding a complexing agent and a pore-forming agent to the metal solution and mixing to obtain a precursor solution; heating the precursor solution to obtain a wet gel; drying the wet gel to obtain a dry gel; and calcining the dry gel under an inert atmosphere containing 6-10% oxygen to obtain the porous bismuth ferrite material. The porous bismuth ferrite electrode material of this invention not only solves the structural defects of traditional porous bismuth ferrite materials, such as small pore volume and insufficient utilization of active sites, but also fully utilizes its membrane capacitance characteristics and bimetallic synergistic effect, showing excellent application prospects in the field of capacitive deionization and chlorine removal.

This invention discloses a self-supporting cathode material, its preparation method, and its applications. The self-supporting cathode material includes a self-supporting substrate and a vanadium-based oxide layer loaded on the self-supporting substrate, wherein the vanadium-based oxide layer contains vanadium-based oxide nanofibers. When this self-supporting cathode material is used to prepare magnesium-lithium hybrid-ion secondary batteries, it exhibits high initial capacity, as well as excellent electrochemical performance such as good rate performance, cycle stability, and reversibility. The self-supporting cathode material provided by this invention is a high-performance magnesium-lithium hybrid-ion secondary battery self-supporting cathode material that can efficiently accommodate dual-ion co-intercalation and is expected to be widely used in the preparation of magnesium-lithium hybrid-ion secondary batteries.

The invention discloses a Mo-assisted co-doped disordered rock salt Li1. 3Mn0. 4Nb0. 3O2 lithium-rich positive electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: taking metal oxides such as Li2CO3, Mn2O3, Nb2O5, MoO2, SnO2 and Fe2O3 as precursors, weighing according to a specific stoichiometric ratio, and additionally adding about 10% of Li2CO3 to compensate for Li loss; the preparation method comprises the following steps: fully mixing, carrying out high-energy ball milling in an argon atmosphere, tabletting, heating to 1000 DEG C at a speed of 5 DEG C / min in the argon atmosphere in a tubular furnace, calcining for a certain time at a constant temperature, naturally cooling, and rapidly transferring to a glove box. The positive electrode material is used for the lithium ion battery, the charge-discharge specific capacity and the energy density of the lithium ion battery can be improved, the preparation process is simple, the cost is low, and large-scale production is easy.

The application provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer includes polymer A and the polymer B at least partially coated on the surface of polymer A, the crosslinking degree of polymer A is X1, the crosslinking degree of polymer B is X2, 5%≤X1≤10%, 50%≤X2≤60%;The non-fluoropolymer composite diaphragm includes base film and coating layer coated on at least one side of base film.The non-fluoropolymer particles of the application have a higher swelling rate at high temperature, also have the reversible characteristics of absorbing and releasing electrolyte, the non-fluoropolymer and the non-fluoropolymer composite diaphragm are applied in the battery, when the battery abnormally heats, the non-fluoropolymer swells rapidly, blocks the ion shuttle channel, avoids the further deterioration of temperature, improves the safety performance of the battery, and when the temperature returns to normal, the non-fluoropolymer particles can restore to the original morphology, restore the ion shuttle channel, so as to not affect the subsequent cycle performance of the battery.

The application provides a supercapacitor carbon and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing petroleum coke and pitch uniformly to obtain a first material; then, carbonizing the first material under the condition of an oxygen-containing gas to obtain a second material; then, crushing the second material and mixing the second material with alkali to perform primary activation under an inert atmosphere to obtain a third material; then, washing and drying the third material, mixing the third material with pitch and alkali, and performing secondary activation under an inert atmosphere; finally, washing and drying to obtain the supercapacitor carbon. The supercapacitor carbon has mesopore-micropore two-stage pore channels, wherein the mesopore has a pore diameter of 2nm-5nm, and the micropore has a pore diameter of 0.4nm-2nm. The application realizes the short-range through-hole pore channel structure design of the petroleum-based porous material through a combined process, provides a large specific surface area for the formation of an effective double electric layer, guarantees the rapid transmission of electric charges, and significantly improves the long-period cycle stability of the material.

The invention belongs to the technical field of capacitors, and discloses a ferro-nickel Prussian blue supercapacitor electrode material, a preparation method thereof and a supercapacitor, and the preparation method comprises the steps: dissolving nickel chloride hexahydrate, ferric trichloride hexahydrate and trisodium citrate dihydrate in water to obtain a reagent A, and dissolving potassium ferricyanide in water to prepare a solution to obtain a reagent B; slowly dropwise adding the reagent B into the reagent A at room temperature, stirring, standing the mixed solution at room temperature, washing, centrifuging, collecting precipitate, and performing vacuum drying to obtain a ferro-nickel Prussian blue material PBA; according to the invention, by adjusting the use amount of trisodium citrate and the ratio of nickel to iron, the effect of giving consideration to both high specific capacitance (140.25 Fg <-1 >) and cycle stability (retention rate after 2000 cycles is 84.35%) is achieved, and by adjusting the synergistic effect of the use amount of trisodium citrate and the ratio of nickel to iron, the structural stability and oxidation-reduction activity of the material can be effectively enhanced; and finally, the balance between high specific capacitance and excellent cycling stability is realized.

The present application belongs to image processing technology, and particularly relates to a reversible face anonymization processing system, which comprises a feature encoder specially used for generating mutually decoupled identity features and attribute features according to an original image; a feature transformation module used for performing a transformation controlled by a secret key on the identity features of the image to obtain anonymous identity features; a feature mapping module used for re-splicing the anonymous identity features and the attribute features and then mapping the re-spliced features into a variable conforming to a StyleGAN latent space distribution through a multi-layer perceptron; an image generation module used for generating an image according to the output of the feature mapping module; and an image repairing module used for fine-tuning and repairing the output of the image generation module. The anonymous image obtained by the present application is greatly different from the original image, and the original identity of the anonymous image cannot be recognized by human eyes. Moreover, the anonymous face and the original face keep a certain distance in the identity feature space, thereby ensuring privacy.

The invention discloses a composite current collector and a preparation method thereof, a magnesium ion battery and an electric device. The composite current collector comprises a conductive composite base film, a three-dimensional porous conductive layer located on the conductive composite base film, and a first modified layer located on at least part of the surface of the three-dimensional porous conductive layer on the conductive composite base film, the conductive composite base film comprises a polymer base film and a first magnesium-loving metal, a groove is formed in the surface of the polymer base film, and the first magnesium-loving metal is located in the groove; the three-dimensional porous conductive layer is located on the side, away from the polymer base film, of the first magnesium-loving metal and comprises at least two layers of alloy layers arranged in a laminated mode, each alloy layer comprises copper and second magnesium-loving metal, and the content of the second magnesium-loving metal in the multiple alloy layers is gradually decreased from the side close to the conductive composite base film to the side away from the conductive composite base film; the first modified layer includes a covalent organic framework material. The composite current collector can improve the deposition of magnesium ions, inhibit the growth of dendrites, reduce the side reaction of an interface, and improve the cycling stability of the magnesium ion battery.

The utility model discloses a kind of earth pressure monitoring equipment in pipe jacking construction process, including mounting sleeve, mounting seat and vibrating wire type earth pressure sensor;The outer wall of mounting sleeve is provided with outer thread A, the top of mounting sleeve is integrally formed with the limiting block of greater diameter than mounting sleeve, clamping knob is installed in the sleeve below mounting sleeve;Mounting sleeve inner wall is provided with internal thread, the outer wall of mounting seat is provided with outer thread B, mounting seat is screwed in mounting sleeve, and outer thread B and internal thread are engaged with each other, mounting seat top is fixedly welded with mounting sleeve, vibrating wire type earth pressure sensor is detachably installed in mounting sleeve.The utility model can be quickly completed installation and disassembly, effectively improve construction efficiency and be conducive to equipment reuse, and sensor installation position can be flexibly adjusted, replace conveniently, can accurately monitor earth pressure and reduce downtime caused by sensor failure, guarantee pipe jacking construction smoothly.

The application belongs to the technical field of temperature sensing, and particularly relates to a fiber temperature sensor based on a double-FP parallel structure, characterized in that the fiber temperature sensor is composed of a reference interferometer and a sensing interferometer in parallel, the reference interferometer is composed of a first single-mode optical fiber, a hollow-core optical fiber and a second single-mode optical fiber, and the sensing interferometer is composed of a third single-mode optical fiber, a PDMS cavity and a fourth single-mode optical fiber; wherein the optical path lengths of the PDMS cavity and the hollow-core optical fiber are controlled to be similar but not equal, the free spectral range of the sensing interferometer is similar but not equal to that of the reference interferometer, the vernier effect of the output spectrum is excited, and an envelope formed by fine stripes is formed. The fiber temperature sensor has the advantages of high sensitivity, high linearity, large detection range, good repeatability and good reversibility, and meanwhile, the size of the fiber sensing probe is in the order of microns, and the fiber temperature sensor is suitable for temperature detection in a narrow space.

The application provides an indium oxide modified carbon material electrode, a preparation method thereof and an alkaline flow battery. The preparation method of the indium oxide modified carbon material electrode comprises the following steps: dipping carbon material subjected to acid pretreatment into an indium source solution to obtain carbon material loaded with an indium source; and performing twice sintering treatment on the carbon material loaded with the indium source to obtain the indium oxide modified carbon material electrode. The indium oxide modified carbon material electrode prepared by the application can effectively reduce the zinc deposition overpotential when applied to an alkaline zinc-iron flow battery, guide uniform zinc deposition, be beneficial to improving the coulombic efficiency and energy efficiency of the battery, and exhibit excellent rate performance and cycle stability.

This invention belongs to the technical field of magnesium-ion battery anode materials, and relates to an alloy-type magnesium-ion battery anode material, its preparation method, and a magnesium-ion battery. The anode material is a magnesium alloy; based on the total weight of the magnesium alloy, the content of rare earth metal elements is 0.1-3 wt%, preferably 0.5-2 wt%, with the balance being magnesium; wherein the rare earth metal elements are lanthanide elements, preferably at least one selected from lanthanum, praseodymium, samarium, holmium, dysprosium, erbium, and ytterbium. Compared to pure magnesium anodes, the alloy material obtained by this method has a longer cycle life and lower overpotential, while also possessing advantages such as environmental friendliness, low cost, and simple processing, showing promising application prospects.