38results about How to "Improve the coordination effect" patented technology

The invention provides a multi-type storage cluster dynamic nano-management method based on a cloud platform, and belongs to the technical field of cloud platform storage resource management, a storage pool is used as a minimum management unit, a configuration center provides a unified nano-management entrance and is associated with a platform initialization process, and initialization of standardized parameters such as a storage cluster IP, an account and the like is automatically completed; after management, block storage, file storage or object storage types and exclusive parameters thereof are configured for the storage pool according to business requirements, and available storage pools are screened according to binding relations when storage services are created, so that resource mismatching is avoided. Bidirectional synchronization is carried out between the operation and maintenance resource management module and the storage module through a full life cycle by using an equipment SN number, so that state consistency and traceability are realized; expansion of newly added storage pools, unbinding of the storage pools and resource recovery are supported, and the resource utilization rate and the operation and maintenance efficiency are improved.

This invention relates to a boron-doped multi-element polyanionic sodium-ion battery cathode material and its preparation method, comprising the following steps: [The method involves] mixing Na₄Fe₂O₃ with... 3‑X B X (PO4) 2‑Y (SiO4) Y The stoichiometric ratio of P2O7 is determined by adding ferrous source, boric acid, sodium source, phosphorus source, and silicon source to water, followed by the addition of carbon source and mixing thoroughly to obtain a mixed slurry; wherein 0.2≤X≤0.5, 0<Y≤1; the mixed slurry is then ground to obtain a sand-milled slurry; the sand-milled slurry is dried to obtain precursor powder; under a protective atmosphere, the precursor powder is sintered at 450~550℃ to obtain boron-doped multi-element polyanion sodium-ion battery cathode material. The introduction of boron and silicon elements in this invention helps reduce raw material costs, improve the electrochemical performance of the material, especially enhancing the structural stability, rate performance, and cycle life of the cathode material, and also lowers the sintering temperature, meeting the requirements for cost reduction and efficiency improvement.

The present application relates to the technical field of high polymer material flame-retardant modification, and particularly relates to a COF hierarchical modification APP-based core-shell flame-retardant smoke suppressant, a preparation method and application thereof. The flame-retardant smoke suppressant takes APP as a flame-retardant core layer; takes PVP as a soft template agent, and assists in situ growth of melamine-p-phenylenedimethylene formaldehyde (COF) on the surface of APP to adsorb combustible volatile components in the initial pyrolysis stage, provide a gas source, and act as a Fe 3+ coordination skeleton; takes tannic acid as a coordination agent and a carbon source, and constructs a multi-level core-shell structure with Fe 3+ coordination. The present application realizes integration of flame-retardant and smoke suppression functions through hierarchical modification. When the flame-retardant agent is applied to polyurethane, it can significantly reduce the heat release rate, smoke release rate and toxic gas generation amount, and simultaneously improve the compatibility with the matrix, effectively overcoming the defects of poor compatibility and insufficient flame-retardant and smoke suppression performance of traditional APP flame-retardant agents. The present application has simple preparation process and controllable conditions, and is suitable for industrial production.

This invention discloses an automatic spring riveting assembly line and its riveting process, relating to the field of spring manufacturing technology. It includes a riveting machine equipped with a pressure plate that moves vertically up and down, and further includes: a conveyor rail positioned below the riveting machine, with a support seat along its length for fixing a lower support; a support plate located on one side of the riveting machine, equipped with a rotating motor for driving its own rotation, and an annular groove adapted to the upper support at its upper end, with a vertically connected passageway communicating with the annular groove. The system includes: a clearance groove; a second support plate, located between the first support plate and the riveting machine, with a placement groove adapted to the upper support at its upper end, and a positioning block fixedly connected to the second support plate circumferentially along the placement groove, the positioning block having a locking groove; a sensing component, located on one side of the first support plate and directly opposite the clearance groove, the sensing component having a probe for sensing obstructions, triggering the sensing component when the probe senses an obstruction within its working range; and a transfer mechanism, located between the first support plate and the riveting machine, used to transport the upper support sequentially along the first support plate, the second support plate, and the carrier plate. This application facilitates the processing of spring workpieces with multiple springs.

The invention discloses a high-strength impact-resistant glass product and a preparation method of the high-strength impact-resistant glass product in the field of glass, and the high-strength impact-resistant glass product comprises the following raw materials in parts by weight: 50-60 parts of SiO2; 10 to 15 parts of Al2O3; 5 to 8 parts of Li2O; 1 to 3 parts of Na2O; 0.5 to 1.5 parts of K2O; 2 to 5 parts of P2O5; 2 to 4 parts of ZrO2; 1 to 3 parts of TiO2; 1 to 2 parts of B2O3; 0.5 to 2 parts of rare earth oxide; 4 to 12 parts of modified SiC particles; and 1 to 3 parts of modified MoAlB particles. The modified SiC particles and the modified MoAlB particles are adopted as a double-phase reinforcing system, the thermal matching performance with a glass matrix is enhanced, and the strength and toughness of the final glass product are greatly improved under the assistance of the structural densification effect of the rare earth oxide.

The utility model relates to power supply equipment technical field discloses a kind of mobile contact power supply devices, comprising: guide rail, recess is formed with sliding slot at guide rail;Sliding brush, slidingly joint in sliding slot;Guide piece, including base body and guide slot;Two guide pieces are respectively arranged in the both ends of guide rail, and the part groove body of guide rail end and guide slot is jointed with cooperation;The end of guide slot away from the guide rail is equipped with opening;The mobile contact power supply device provided by the utility model, when sliding brush is cooperatively connected with guide rail, sliding brush is not needed to be forced to be clamped into above guide rail, using guide piece, operator slides sliding brush into guide slot from the opening of guide piece, and along guide slot smoothly slide towards the direction close to guide rail, sliding brush is guided into the sliding slot of guide rail under the guiding action of guide slot, prevent sliding brush and guide rail from being damaged in cooperation process, while guide slot plays the role of guiding sliding brush position, prevent sliding brush and guide rail from being misaligned in cooperation.

The application belongs to the technical field of sodium-ion battery cathode materials, and discloses a pyrophosphoric acid sodium iron phosphate composite material and a preparation method and application thereof. By regulating the microenvironment of chelation reaction, the chelation state of iron ions is optimized, iron ion precipitation is avoided, and the formation of electrochemically inert impurities is inhibited. Meanwhile, graphene oxide constructs a three-dimensional conductive network to improve the electronic transmission capacity of the material. The pyrophosphoric acid sodium iron phosphate composite material prepared by the application has small particle size, uniform dispersion, no inert impurities and is tightly coated by the conductive network. The material has a discharge specific capacity of 120.9 mAh·g ‑1 at 0.5 C, still maintains a reversible capacity of 78.1 mAh·g ‑1 at 20 C high rate, and has a capacity retention rate of 84.9% after 1000 cycles, and the full battery assembled with the hard carbon negative electrode also exhibits excellent rate and cycle performance.

The invention discloses a fluorescent probe for recognizing lithium ions and a preparation method and application thereof.The method comprises the steps that rhodamine B, HATU and methyl 3-amino-3-methyl-1-butyrate are mixed and subjected to a first-step reaction, a first reactant is obtained, the first reactant, ethyl alcohol and sodium hydroxide are mixed and subjected to a second-step reaction, a second reactant is obtained and subjected to a third-step reaction, and the fluorescent probe for recognizing the lithium ions is obtained. And mixing the second reactant, crown ether, EDCI and HOBT, and carrying out a third-step reaction to obtain the fluorescent probe. According to the method, lithium ions in a complex environment can be efficiently recognized, and raw material waste and resource loss in the production process are avoided.

This invention discloses a porous carbon-supported copper catalyst, its preparation method, and its application, belonging to the field of catalyst preparation technology. The invention uses three-dimensional interconnected ordered porous carbon (NCP) with a large-pore structure as a support, tetraphenylporphyrin copper(II) and tetraphenylporphyrin as nitrogen and copper sources, and KOH or NaOH as activators. An NCP precursor adsorbed with tetraphenylporphyrin copper(II), tetraphenylporphyrin, and an alkaline component is obtained through a two-step adsorption process. This precursor is then pyrolyzed at 600-900℃ under nitrogen protection, cooled to room temperature, and washed with water to obtain the porous carbon-supported copper catalyst (NCP@NC-Cu). This catalyst retains a three-dimensional interconnected porous structure, with the active component (copper species) mainly distributed within the pores of the NCP support, and possesses a large specific surface area and abundant nitrogen. The catalyst was applied to the N-formylation reaction of amines with CO2 and H2 to prepare formamide compounds, exhibiting excellent catalytic activity, recyclability, and good substrate versatility, showing promising application prospects.

The application relates to the technical field of printing and dyeing fixing agents, and particularly discloses a formaldehyde-free fixing agent and a preparation method thereof. The formaldehyde-free fixing agent is prepared from raw materials in the following proportions by weight: dimethyl diallyl ammonium chloride 81-162 parts; acrylamide 9-18 parts; ammonium persulfate 5-7 parts; epichlorohydrin 55-105 parts; tetraethylenepentamine 9-18 parts; triethylamine 4.5-9 parts; dimethylamine 9-18 parts; water 90-120 parts; triallylamine 0.5-1 part; the dimethyl diallyl ammonium chloride, the acrylamide, the ammonium persulfate and the epichlorohydrin are used for preparing product A; the tetraethylenepentamine, the triethylamine, the dimethylamine and the epichlorohydrin are used for preparing product B; the product A, the product B, the water and the triallylamine are mixed to obtain the formaldehyde-free fixing agent. The formaldehyde-free fixing agent of the application can balance the permeability and the reaction film-forming property after application, and has excellent fixing performance.

The invention belongs to the technical field of coal rock component analysis equipment, and particularly relates to a detection device for coal rock component analysis, which comprises a coal rock X-ray plate manufacturing machine and a controller, an automatic grinding and polishing detection mechanism is arranged on one side of the output end of the coal rock X-ray plate manufacturing machine; the coal rock polished section manufacturing machine and the automatic grinding and polishing detection mechanism are connected through the material conveying mechanism, and the automatic grinding and polishing detection mechanism comprises a grinding and polishing station, a detection station and a clamping and conveying mechanism used for conveying and positioning a coal rock polished section between the grinding and polishing station and the detection station, the structure is convenient to use, the coal rock component analysis efficiency is improved, the detection effect is enhanced, the automation of the whole process of preparation, storage, grinding, polishing and detection of the coal rock polished section is realized, and the detection accuracy is ensured.

The invention relates to the technical field of solar cells, in particular to a stabilizer, a perovskite precursor solution, a perovskite solar cell, a preparation method of the perovskite solar cell, a perovskite laminated solar cell and a photovoltaic module. The stabilizer provided by the invention comprises a compound with a general formula of A-R-B, r comprises at least one of an alkyl carbon chain, an aryl-containing carbon chain or a heteroatom-containing carbon chain; a comprises at least one of a thioether group, a sulfydryl group and a sulfo-carboxyl group; b comprises at least one of a sulfonic group, a carboxyl group or a carbamic acid group; thioether group, sulfydryl or sulfo-carboxyl in the stabilizer can be used as a main coordination site to form a strong coordination bond with Pb < + > to improve the coordination ability, and sulfonic acid group, carboxyl or carbamic acid group can be used as an auxiliary coordination site and can also be used as a proton source to synchronously solve two key degradation paths of cation deprotonation and iodide ion oxidation, so that the stability of the stabilizer is improved. The monomolecular bifunctional stable effect is achieved, the coordination capability and stability are improved, and the stability of the perovskite precursor solution can be remarkably improved.

A chemical pre-lithiation method for improving the initial coulombic efficiency of carbon-based current collectors and its application in lithium metal batteries is disclosed. The method uses a carbonized cellulose film as the current collector, which is obtained by dropwise addition of an active lithium solution under an argon atmosphere until the solution reacts fully. This invention uses 4,4'-dimethylbiphenyllithium as the active lithium species and diphenyl ether and 2-methyltetrahydrofuran as a mixed solvent. By using a high-temperature carbonized cellulose film as the current collector, it is possible to achieve a better promoting effect on the active lithium species while increasing the initial coulombic efficiency to over 100%, greatly compensating for the irreversible capacity loss in the early cycling stages of carbon-based current collectors.

The utility model discloses a precipitation device for waste liquid treatment, and relates to the technical field of waste liquid treatment, the precipitation device comprises a fixed shell, the inner wall of the fixed shell is fixedly provided with a bearing assembly, the bearing assembly comprises a precipitation plate, the top of the precipitation plate is fixedly connected with a limiting strip, and one side of the precipitation plate is provided with an outlet; a limiting groove is formed in the bottom of the precipitation plate, a limiting clamping plate is fixedly mounted at the bottom of the precipitation plate, and racks are symmetrically mounted at the bottom of the precipitation plate. According to the sedimentation device for waste liquid treatment, the sedimentation plate is obliquely arranged, so that the sedimentation area in the fixed shell is conveniently increased, a particle sedimentation path is effectively shortened, the treatment capacity of unit volume is improved, and the occupied area of the sedimentation device is reduced; impurities precipitated at the top of the precipitation plate can be conveniently cleaned, so that the use convenience and the working efficiency of the precipitation device for waste liquid treatment are improved.

The utility model discloses a kind of mica plate's gluing equipment, including conveying mechanism, the middle part of conveying mechanism is equipped with gluing platform and gluing box, the upper end of gluing platform is located in gluing box, the bottom of the front end of conveying mechanism is equipped with front support foot, the rear end of conveying mechanism is equipped with heating oven, the bottom of heating oven is positioned with rear support foot, the upper end of gluing box is equipped with glue tank and lifting control seat, mica plate body is provided on conveying mechanism, driving motor is installed in the lower end of conveying mechanism, the bottom of glue tank is equipped with connector, connector's bottom is equipped with glue spraying box, glue spraying pump is installed in the bottom of glue spraying box.The gluing equipment of the utility model provides a kind of mica plate's gluing equipment, provides a kind of mica plate back glue processing scheme with controllable cost, excellent peel strength, to solve the problem that back glue and mica plate are not firmly bonded in use process, cause open glue in release paper peeling process.

This invention provides a method for recovering valuable metals from spent lithium-ion batteries. The method utilizes a eutectic solvent composed of dimethyl-β-propionate thiophene as a hydrogen bond acceptor and lactic acid as a hydrogen bond donor, with the addition of ethanol, to separate valuable metals from spent lithium-ion batteries. Ultimately, lithium is recovered as lithium carbonate, manganese as hydroxide, and nickel and cobalt as metal oxides, achieving high separation efficiency. This invention employs a eutectic solvent to selectively separate multiple valuable elements from the cathode material of spent lithium-ion batteries, significantly shortening the reaction time. The selective recovery rate of transition metal elements can reach over 90%, and the lithium recovery rate can reach over 99%.

This invention discloses a bisphosphonophenylamine tridentate ligand compound, which is prepared from diphenylamine compounds, elemental bromine, n-butyllithium, organophosphorus compounds, etc. This ligand compound can be combined with transition metal compounds and aluminum-containing additives to form a catalyst composition for the catalytic reaction of ethylene tetramerization to 1-octene, exhibiting advantages such as high catalytic activity, high 1-octene selectivity, and low deactivation at high temperatures.

The utility model relates to the technical field of detection instruments, in particular to a hardness detection device for nickel-phosphorus plated alloy steel plate production, which comprises a fixed table, two groups of guide rails are mounted at the top of the fixed table, a movable plate is slidably arranged on the two groups of guide rails, and one end of the movable plate is detachably connected with a material seat. A reciprocating mechanism for driving the movable plate to horizontally move is fixedly arranged on the side wall of the fixed table, a stock bin barrel is arranged above the movable plate, the stock bin barrel is installed in a first fixing frame through screws, the first fixing frame is installed on the fixed table, a second fixing frame installed on the fixed table is arranged on one side of the stock bin barrel, and an air cylinder is installed at the top of the second fixing frame; a hardness detection pressure head is mounted at the bottom of the cylinder; the hardness detection device for nickel-phosphorus plated alloy steel plate production can complete the whole hardness detection work of a sample piece, and is simple in overall structure, high in cooperation, low in maintenance frequency and suitable for batch sample piece detection.

This invention provides a siloxane ligand-protected Ag 40 Nanoclusters, their synthesis methods, and applications. This invention relates to Ag protected by siloxane ligands. 40 Nanoclusters are composed of RC≡C ‑ and (Ph 4 Si 4 O 8 ) 4‑ Ag protected by both ligands 40 Nanoclusters, with the molecular formula {Ag} 40 [(RC≡C) 8 (Ph 4 Si 4 O 8 ) 6 The silver nanoclusters synthesized in this invention have precise atoms and novel structures; the synthesis method is simple, easy to operate, mild under mild conditions, and the raw materials are readily available, making it potential for industrial and commercial production; the obtained silver nanoclusters exhibit superior fluorescence performance at low temperatures and have a long fluorescence lifetime, making them practically valuable in the field of fluorescent probes and worthy of market promotion.

This utility model belongs to the field of bottle caps and discloses a quick-connect structure and container. It includes a first ring and a second ring that matches the first ring. The direction in which the second ring covers the first ring is the capping direction, and the surface of the second ring closest to the first ring along the capping direction is the lower surface of the second ring. It also includes two mounting platforms on the second ring, symmetrically arranged on the lower surface of the second ring. The purpose of this utility model is to secure the mounting platforms to a positioning post via slots. Furthermore, there are only two mounting platforms and two slide rails, making it simpler to manufacture and less costly compared to existing three-point or four-point snap-fit ​​structures. Additionally, unlike existing screw-type structures that require a full turn or more, the cooperation of the mounting platforms and slide rails ensures that the rotation range of this connection structure during engagement is less than one full turn.

The invention discloses an inert electrolyte and a preparation method and application thereof.The inert electrolyte comprises alkali metal salt and an organic solvent, the organic solvent comprises a first solvent, and the first solvent is a methylated inert solvent; the methylation inert solvent is selected from at least one of a first organic ester compound, an organic ether compound, an organic fluorinated compound and an organic nitrile compound. Through methylation molecular engineering modification on first solvent molecules, inert methyl groups can increase inertness of the solvent molecules and coordination of anions, oxygenolysis of the positive electrode under high voltage and reductive decomposition of the negative electrode are effectively inhibited, stable and uniform interfacial films are formed on the surfaces of the positive electrode and the negative electrode, and the positive electrode and the negative electrode are more stable. And the cycling stability of the battery under high voltage is obviously improved. Meanwhile, the electrolyte has a wide electrochemical window, efficient lithium ion transmission capacity and high wide-temperature adaptability, and the battery can keep stable cycle performance in the low-temperature environment of-20 DEG C and the high-temperature environment of 60 DEG C.

This invention provides an in-situ passivation method for perovskite thin films, a perovskite solar cell, and a method for preparing the same. The in-situ passivation method includes: preparing a perovskite precursor solution comprising formamidinium cations, divalent metal cations, halide anions, and fluorobenzylamine, wherein the content of fluorobenzylamine is 0.01% to 1% of the molar amount of formamidinium cations; coating the perovskite precursor solution and annealing it to crystallize the solution and allow the fluorobenzylamine and formamidinium cations to react in situ, forming an in-situ passivated perovskite thin film. In this application, fluorobenzylamine is used to in-situ passivate the formamidinium-containing perovskite system, achieving mutual promotion between the passivation and crystallization adjustment processes. Furthermore, in-situ passivation suppresses ion migration, allowing the high-quality thin film structure composed of large grains to be maintained during long-term operation, ultimately achieving high device stability.

The application relates to a negative electrode sheet, a battery and an electric device. The negative electrode sheet comprises a negative electrode current collector layer and a negative electrode material layer which are arranged in a stack, the negative electrode material layer comprises a carbon-based negative electrode material, a negative electrode binder and a first additive, the negative electrode binder comprises lithium polyacrylate, and the structural formula of the first additive is

The utility model relates to the technical field of folding protection shell discloses middle lid shell suction type folding protection shell, including bottom shell, middle lid, lid suction piece and shell suction piece, one end of electronic equipment has the middle axis, the middle lid is used for protecting the middle axis, bottom shell and middle lid are assembled arrangement, the middle lid is swing arrangement relative to bottom shell under external force, lid suction piece sets up in the middle lid, shell suction piece sets up in bottom shell, lid suction piece and shell suction piece are adsorbed or separate arrangement. Through the middle lid realizes the protection to the middle axis of electronic equipment, reduces the risk of damage of middle axis, and simultaneously, in the cooperation of lid suction piece and shell suction piece, the cooperation effect of middle lid and bottom shell is enhanced, when folding state, the setting stability of middle lid is enhanced, the protection of middle lid to middle axis is guaranteed, furthermore, the lid suction piece of middle lid does not directly adsorb the middle axis, reduces the influence that the adsorption of lid suction piece causes to electronic setting own operation, is convenient for normal use of electronic equipment.

The application provides a safe and environmentally friendly scheme generation method based on a geological control mechanism and electronic equipment, and relates to the technical field of resource development. The method comprises the following steps: obtaining input variables of a target project and constructing a mathematical-physical characterization model; the input variables comprise a ground stress field, a hydrogeological field, a temperature field, a chemical field and basic properties of a mineral body; the basic properties of the mineral body comprise a resource type and occurrence parameters; lever factor sets are determined according to the mathematical-physical characterization model; candidate measure sets are obtained by traversing a full-cycle prevention and control matrix according to the lever factor sets; and target measures are obtained by screening the candidate measure sets based on a multi-objective function. The application uniformly and quantitatively characterizes multiple fields, accurately locates risk lever control factors, quickly matches full-cycle prevention and control measures, and obtains an optimal treatment scheme through multi-objective optimization, thereby improving the objectivity, overall planning and landing of the safe and environmentally friendly scheme compilation for deep mines.

The invention relates to the technical field of rubber products, and provides an anti-aging rubber sealing ring for a washing machine and a preparation method thereof.The preparation method comprises the steps that ethylene propylene diene monomer, maleic anhydride grafted ethylene propylene diene monomer, white carbon black, a metallic soap lubricant and a vulcanizing agent are provided; mixing the components except the vulcanizing agent, adding the vulcanizing agent, and carrying out thin-passing and sheet discharging to obtain a rubber compound; carrying out heat preservation treatment on the rubber compound at 80-90 DEG C for 2-3 hours, and cooling to room temperature to obtain the rubber compound subjected to heat treatment; and extruding and vulcanizing the rubber compound subjected to heat treatment to obtain the rubber sealing ring. According to the technical scheme, the aging resistance of the rubber sealing ring is improved.

The application relates to an anti-impact racket surface coating and a preparation method thereof, and belongs to the technical field of coatings; a multifunctional polyurethane chain extender is designed, rigid benzimidazole structures and flexible sulfide structures in the structure of the polyurethane chain extender help to enhance the tensile strength of the polyurethane, and energy dissipation after impact is accelerated, chain extension and strengthening effects of rigidity and toughness are realized; moreover, the reactivity of alcohol hydroxyl groups and amino structures in the chain extender structure of the application and isocyanate groups is quite different, the reaction of alcohol hydroxyl groups and amino groups will be carried out in steps in the chain extension reaction, the amino groups preferentially react to anchor molecular chains, and the hydroxyl groups are hysteresis reaction, which is beneficial to the formation of ordered hard segment microzones, the microphase separation degree in the system is enhanced, and the impact resistance is significantly improved.

This disclosure provides a device instance creation method, a communication method, a gateway, a program product, and a system, relating to the field of Internet of Things (IoT) technology. The device instance creation method includes: responding to a received device instance creation request, parsing the request to obtain a device instance description file, the device instance description file including: a unique identifier for the device model, a unique identifier for the device, target component configuration information, and a target communication subsystem type; matching the corresponding device model definition file based on the unique identifier for the device model to obtain a target device model definition file; matching the corresponding device plugin based on the unique identifier for the target device plugin in the target device model definition file to obtain a target device plugin; and loading the target device plugin and performing a device instance creation operation through the target device plugin to obtain a target device instance.

The invention discloses a porous iron-based material and application of the porous iron-based material coupled with microorganisms in wastewater treatment, and belongs to the technical field of wastewater treatment. The porous iron-based material is obtained by mixing composite carbon nitride with a carbon source and an iron source and then performing high-temperature reduction, the composite carbon nitride is prepared by taking melamine, ammonium phosphate and thiourea as precursors through a thermal polymerization method; the carbon source comprises tannic acid, glucose and chitosan; the iron source comprises ferric chloride hexahydrate; the prepared porous iron-based material is good in stability, and when the porous iron-based material is placed in a bioreactor inoculated with activated sludge, efficient degradation of antibiotics in wastewater can be effectively achieved.

The application relates to a preparation method of an N, P co-doped Fe-based electrocatalyst and application thereof. The preparation method of the embodiment comprises the following steps: preparing a mixture of FeN2P1 metal organic complex, a carbon carrier and dicyanodiamine; and baking the mixture under an inert atmosphere, wherein the baking process comprises the following steps: firstly, heating to 500-550 DEG C and keeping for 1-3 hours, and then heating to 700-900 DEG C and keeping for 1-3 hours, so as to obtain the N, P co-doped Fe-based electrocatalyst. The Fe-based electrocatalyst prepared by the application has excellent catalytic activity and stability for ORR and OER reactions.