28 results about "Microwave method" patented technology

The invention discloses a high-dispersion cobalt-based catalyst and a preparation method and application thereof, and belongs to the technical field of cobalt-based catalysts.The preparation method comprises the steps that tetracarboxyl cobalt phthalocyanine and nitrogen-defect carbon nanotubes serve as raw materials, a pre-assembled compound is formed in an organic solvent through molecular self-assembly, then programmed microwave heating is conducted on the pre-assembled compound, and the high-dispersion cobalt-based catalyst is obtained. According to the high-dispersion cobalt-based catalyst and the preparation method thereof disclosed by the invention, a means of combining a specific molecular precursor and carrier defect engineering is utilized, a'molecular anchor-anchor positioning 'pre-connection system is constructed through liquid-phase pre-assembly, and a programmed microwave energy accurate input principle is supplemented, so that the high-dispersion cobalt-based catalyst is obtained. The key technical problems that when the cobalt-based catalyst is prepared through an existing microwave method, metal atoms are prone to agglomeration, the active site structure is uncontrollable, and the catalytic performance is ordinary are successfully solved.

This invention belongs to the field of heavy metal ion detection technology, specifically relating to a method for detecting Co based on microwave-synthesized histidine carbon quantum dots from yam. 2+ The method involves adding ground yam powder and histidine to deionized water, stirring, and then microwaving. After centrifugation, the supernatant is filtered through a filter membrane, and the filtrate is the yam-doped histidine carbon quantum dot (F-CDs) mother liquor. Different concentration gradients of Co are added to the F-CDs mother liquor. 2+ Subsequently, the fluorescence intensity of the F-CDs mother liquor increased with Co. 2+ The quenching efficiency F / F0 and Co gradually decrease with increasing concentration. 2+ In 1×10 ‑6 ~9×10 ‑6 The method exhibits good linearity within the mol / L concentration range and demonstrates good selectivity, indicating that it is effective for Co. 2+ The detection is characterized by its sensitivity, speed, and high selectivity.

The application belongs to the technical field of environmental material synthesis, and particularly relates to a method for synthesizing a composite film by means of NMP-induced surface self-corrosion assisted rapid spin coating and application thereof; the steps are as follows: firstly, PDI and PEDOT are prepared, then a photocatalyst is prepared by means of a microwave method and a surface imprinting technology, and then the photocatalyst is embedded in surface pores of a PVDF film by means of NMP-induced surface self-corrosion assisted rapid spin coating to prepare an imprinting composite film with high stability and high permeability; the imprinting PDI / PEDOT photocatalyst is firmly embedded in the surface pores of the PVDF film, the stability is effectively improved, and a high water flux and a high light degradation activity are maintained. In addition, the construction of a heterojunction structure and the existence of imprinting cavities endow the imprinting composite film with good self-cleaning performance, photocatalytic performance and significant selectivity, and the imprinting composite film has a wide application prospect.

The application provides a preparation method and device of a graphdiyne powder material, and the method comprises the following steps: under the action of microwaves, the graphdiyne powder is prepared through a solution homogeneous system and in combination with a flow continuous growth process. The application realizes the large-batch continuous preparation of the graphdiyne powder under the condition of no substrate by using the microwave method, and overcomes the technical difficulty that the graphdiyne powder is difficult to continuously mass-produce in a homogeneous solution. The reaction time is short, the yield is high, the operation is simple, and the two-dimensional graphdiyne nanosheet with uniform sheet diameter is prepared.

The application discloses a method for preparing Li3Fe2(PO4)3 from retired positive electrode powder of lithium iron phosphate battery, which comprises the following steps: mixing the active powder obtained by decomposing the positive electrode sheet with acid or alkali, and then adding an oxidizing agent to react to obtain a mixed solution; putting the mixed solution into a microwave reactor to react to obtain a Li3Fe2(PO4)3 precursor solution; centrifuging the precursor solution and washing it for multiple times, and then putting it into a muffle furnace to calcine after drying, and finally obtaining the powder-shaped Li3Fe2(PO4)3. The application can avoid the use of a large amount of strong acid and strong alkali in the traditional wet method, and can realize a short process, a simple preparation method, low cost, and direct regeneration of lithium battery positive electrode materials. After introducing an external field by the microwave method, the acid and the alkali promote the change of the structure of LiFePO4, and the recovery of lithium and iron elements is facilitated. In addition, after recycling, the application obtains the NASICON type Li3Fe2(PO4)3 with high ionic conductivity and stable structure as a positive electrode material to assemble a lithium ion battery, and it is found that the lithium ion battery has good reversible capacity and excellent capacity retention rate.

This invention provides an antibacterial cotton fiber based on silver-doped carbon quantum dots (Ag-CQDs), its preparation method, and its applications, belonging to the field of functional textile materials technology. This invention employs a microwave method for the rapid synthesis of silver-doped carbon quantum dots (Ag-CQDs). Utilizing the instantaneous high temperature, uniform heating, and electron transfer-promoting properties of microwaves, silver ions rapidly combine with the oxygen- and nitrogen-containing functional groups of the carbon precursor, forming a covalent / coordination composite structure of silver-doped carbon quantum dots. Further chemical modification of the cotton fiber generates numerous active reaction sites on its surface. Finally, Ag-CQDs are firmly loaded onto the cotton fiber surface and surface voids through covalent bonds, coordination bonds, and hydrogen bonds, forming a uniform, continuous, strong, and washable antibacterial coating. The resulting silver-doped carbon quantum dot-based cotton fiber exhibits long-lasting antibacterial properties, along with low toxicity, high stability, and good bonding strength, demonstrating excellent application prospects in the field of long-lasting antibacterial textile materials.

The application discloses a method for detecting glyphosate in coffee by Cu-CDs / ABEI@Ag nanozyme catalytic chemiluminescence, and belongs to the technical field of chemical analysis and detection. 2+ The application is characterized in that 4-aminoantipyrine is used as a precursor, Cu is used as a doping element, Cu-doped carbon dots (Cu-CDs) are synthesized by a microwave method, Cu-CDs and ABEI are used as reducing agents to synthesize Cu-CDs / ABEI@Ag nanozyme, the Cu-CDs / ABEI@Ag nanozyme has excellent peroxidase-like (POD-like) activity, promotes the decomposition of H2O2, and enhances a chemiluminescence signal; glyphosate can interact with the Cu-CDs / ABEI@Ag nanozyme to inhibit the POD-like activity of the nanozyme, so that the chemiluminescence intensity generated by the oxidation of ABEI is reduced; and based on this, the method is used for detecting glyphosate in coffee samples, and has the characteristics of high specificity, simple operation and high sensitivity.

The invention relates to the technical field of nano biological medicine, and discloses a Ce-Cu bimetal MOF nano enzyme prepared based on a microwave method and a preparation method and application thereof.The preparation method comprises the following steps that cupric nitrate trihydrate and pyrazole-4-carboxylic acid are completely dissolved in N, N-dimethylformamide through oscillation dissolution or ultrasonic dissolution, and a solution A is prepared; ultrasonically dispersing the Ce6 cluster in water to prepare a solution B; mixing the solution A with the solution B, and slowly adding trifluoroacetic acid to prepare a mixed solution C; the mixed solution C is placed in a microwave reactor, the reaction temperature ranges from 80 DEG C to 100 DEG C, the microwave power ranges from 300 W to 400 W, and the reaction time ranges from 15 min to 30 min; and centrifuging and washing to obtain the Ce-Cu bimetal MOF nano-enzyme with the particle size of 100 to 200 nm. The reaction is rapid, the morphology is controllable, and the SOD and CAT simulation activity is high.

The invention relates to a method for preparing resistant dextrin by using an intermittent microwave technology, which comprises the following steps: (1) adding an acid solution into starch, sealing and uniformly stirring to obtain acidified starch; (2) carrying out intermittent microwave operation on the acidified starch according to different empty-duty ratios to prepare a resistant dextrin crude product; and (3) dissolving the crude product of the resistant dextrin, performing enzymolysis and centrifugation through thermostable alpha-amylase and saccharifying enzyme, performing alcohol precipitation with ethanol, cleaning, and drying to obtain the resistant dextrin. By adopting the intermittent microwave method, the energy loss is reduced, the yield and the purity of the resistant dextrin are improved, and the production cost is saved.

The invention discloses a preparation method and application of novel biomass carbon dots. The preparation method comprises the following steps: S1, adding apple branch powder into water, and uniformly mixing to obtain a mixed solution; and S2, putting the mixed solution obtained in S1 into a microwave oven for microwave treatment to obtain a reactant. S3, taking out reactants, cooling the reactants to room temperature, and adding water for centrifugal filtration treatment. And S4, collecting a supernatant obtained by treatment in S3, and purifying the supernatant. And S5, drying the purified product obtained in S4 to obtain the biomass carbon dots, and storing the prepared biomass carbon dots in an environment with a constant temperature of 4 DEG C for later use. Apple branches are used as precursors, the biomass carbon dots are synthesized through a microwave method, biocompatibility is good, toxicity is low, high-selectivity and high-sensitivity detection of Cr < 6 + > and riboflavin can be achieved, the synthesis process is economical, environmentally friendly, rapid, simple and convenient, and a new scheme is provided for the environment-friendly detection technology.

The application discloses a kind of sodium vanadium phosphate positive electrode material, positive electrode sheet and preparation method, application thereof.The preparation method of the sodium vanadium phosphate positive electrode material mainly includes the following steps: (1) vanadium source, organic alkaline substance and ethanol are mixed, precursor is prepared by microwave method;(2) the mixture of precursor and sodium source, phosphorus source is calcined, and the sodium vanadium phosphate positive electrode material prepared by the application has one-dimensional nanowire structure, which is beneficial to optimize ion conductivity, when it is applied to battery, the battery has low internal resistance, high energy density, good rate performance and cycle performance.The raw materials used in the application are relatively cheap and easy to obtain, and the production time is significantly shortened, easy to realize, and has industrial application prospect.

This invention belongs to the field of cement technology, specifically relating to a method for preparing molybdenum tailings cementitious composites using a microwave method. The specific steps of this method are as follows: Molybdenum tailings are ground together with other admixtures; water is added to the molybdenum tailings powder and stirred evenly to obtain a mixture; a microwave field is applied to the mixture and maintained for 10-40 minutes to obtain a composite material; the composite material is crushed and sieved to obtain the molybdenum tailings cementitious composite material prepared by the microwave method. This method uses molybdenum tailings as the main raw material, combined with natural minerals such as limestone and bauxite, to prepare a composite material with high activity. The operation is simple and does not require extensive new equipment or technology.

The utility model relates to equipment for extracting gypsum whiskers from gypsum wastes by an ultrasonic-assisted microwave method. The equipment comprises a size mixing tank, a pipeline ultrasonic reaction system, a microwave reaction tank and a microwave crystallizing tank, a water inlet is formed above the size mixing tank, and a size stirrer A is arranged in the size mixing tank; the pipeline ultrasonic reaction system comprises a reaction tank, an ultrasonic pipeline wrapped on the outer wall of the reaction tank and a plurality of ultrasonic generating devices arranged in the ultrasonic pipeline; a gypsum slurry pump is arranged outside the reaction tank, and a variable-frequency speed-regulating stirring device and an ultrasonic sensing probe are arranged in the reaction tank; one side of the ultrasonic pipeline is connected with the size mixing tank, and the other side is connected with the microwave reaction tank; a temperature sensor is arranged on the outer wall of the microwave reaction tank, and a slurry stirrer B is mounted in the microwave reaction tank; the microwave reaction tank is connected with a microwave crystallizing tank through a slurry pipeline D, and the microwave crystallizing tank is connected with a drying machine. The production cost is low, the comprehensive energy consumption is reduced while the production efficiency is improved, and the comprehensive utilization of industrial wastes is realized.

This invention discloses a real-time detection method for the moisture content of fine aggregates in concrete production, belonging to the field of fine aggregate moisture content detection. The method includes: acquiring several sand samples with different moisture contents for different fine aggregates; extracting stable feature values ​​of the signal from the original signal sequence acquired by a microwave moisture content sensor for each sand sample using the sliding window density peak method; calculating the average thickness, average flow velocity, and average temperature; constructing a first prediction model based on an enhanced multiple regression model; constructing a second prediction model based on a tree model; determining the optimal moisture content prediction model from the first and second prediction models; and in concrete production, acquiring the stable feature values, thickness, flow velocity, and temperature of the signal in real time, and calling the optimal moisture content prediction model for the corresponding fine aggregate to predict the moisture content. This invention solves the problem of measurement inaccuracy caused by random fluctuations in the original signal and variable material flow conditions when using microwave methods to detect the moisture content of sand and gravel online.

The application discloses a method for rapidly synthesizing RGB room-temperature phosphorescent carbon dots by microwave heating. Sodium carbonate and sodium bicarbonate are dissolved in ultrapure water, and stirring is performed until complete dissolution to prepare a buffer solution; alpha-cyclodextrin and urea are added to the buffer solution, and stirring is performed until complete dissolution, then 1-pyrene boronic acid, 9-phenanthroline boronic acid and 4-methyl boronic acid are added respectively, and microwave reaction is performed in a microwave oven for 50-200s; after cooling to room temperature, red, green and blue room-temperature phosphorescent carbon dots are obtained respectively. The application utilizes the microwave method to synthesize blue, green and red stable room-temperature phosphorescent carbon dots, introduces a cavity structure and a covalent bond through cyclodextrin, suppresses non-radiative transition of molecules, introduces a carbonyl group through urea, promotes intersystem crossing of molecules, and thus the lifetime and quantum yield of the carbon dots are enhanced; the synthesized RGB room-temperature phosphorescent carbon dots have strong stability, long phosphorescent lifetime and high quantum yield, and are more convenient and more widely applied.

The invention discloses a preparation method and application of a spherical nucleic acid-based nanoprobe and a paper-based chip thereof. The preparation method is characterized by comprising the following steps: preparing the spherical nucleic acid nanoprobe based on a sulfadiazine aptamer by adopting a microwave method; the paper-based chip is prepared by constructing a hydrophobic barrier by adopting a laser printing and high-temperature heating method, a to-be-detected water sample is dropwise added into a sample adding area of the paper-based chip, and the sample firstly reaches a detection area 1 through capillary action and is gathered after acting with a nano probe for detecting aminoglycoside antibiotics, so that the color of the paper-based chip is changed; after the sample continuously flows to a detection area 2 and reacts with the prepared spherical nucleic acid nanoprobe based on the sulfadiazine aptamer, a sodium chloride solution is dropwise added into the area to trigger a particle aggregation reaction, so that the color of the paper-based chip is changed, and simultaneous detection of aminoglycoside and sulfonamide antibiotics is realized. Compared with the prior art, the method has the characteristics of rapidness, convenience, economy and practicability, and is of great significance to environmental risk assessment, pollutant control and public health.

The invention discloses a preparation method of Ni-CNTs / WC-based composite spraying powder for spraying and related powder of the Ni-CNTs / WC-based composite spraying powder. The preparation method of the composite spraying powder comprises the steps of preparation of nickel-coated carbon nanotube particles, preparation of mixed slurry and preparation of spraying powder. In the preparation of the nickel-coated carbon nanotube particles, the surface of the carbon nanotube is coated with nickel by adopting a microwave method, so that the wettability with a matrix is improved, and the interface bonding is enhanced; according to the Ni-CNTs / WC-based composite powder prepared through the method, the carbon nanotubes are evenly distributed, the content is controllable, powder particles are compact, the sphericity degree is good, the surface quality is high, the problem that the carbon nanotubes are prone to agglomeration is solved, and the method which is easy and convenient to operate and low in cost is provided for preparation of CNTs enhanced WC-Co, WC-Ni, WC-CoCr and other system composite spraying powder and coatings.

This invention discloses a Ti3C2@MnO2 heterostructure material, its preparation method, and its applications. Using Ti3AlC2, LiF, and HCl as precursors, Ti3C2 was prepared by stripping Al atoms from the Ti3AlC2 precursor using a weak acid etching method. The Ti3C2@MnO2 heterostructure material was then prepared using a microwave method with Ti3C2 as the matrix and potassium permanganate as the manganese source. The prepared Ti3C2@MnO2 heterostructure material exhibits good catalytic performance, strong electron transport capability, and stable physicochemical properties. Furthermore, based on the oxidase-like activity and photoelectrocatalytic activity of the Ti3C2@MnO2 heterostructure material, this invention constructs a colorimetric and photoelectric sensor for GSH detection, which possesses excellent anti-interference ability and high selectivity. This sensor has dual signal measurement capabilities, increasing the dynamic range of the measurement and providing built-in correction for environmental and concentration factors, thus solving the problems of high background signal interference and low sensitivity in traditional sensors.

The invention relates to the technical field of fluorescence sensing and food safety detection, in particular to a carbon quantum dot for mercury ion fluorescence detection and a preparation method and application thereof.According to the method, 2, 3-diaminopyridine serves as a C source and an N source, boric acid serves as a boron source, and N and B synergistically doped carbon quantum dots are synthesized in one step through a microwave method; a fluorescence sensing system with specific recognition capability on Hg < 2 + > is constructed, compared with traditional blue light carbon quantum dots, the carbon quantum dot has the emission wavelength of 425-520 nm, belongs to a long wavelength region, has the linear range of 0-25 [mu] mol / L, and can meet the detection requirements of trace-to-trace Hg < 2 + >; the detection limit of mercury ions (Hg < 2 + >) is as low as 32.8 nmol / L, which is far lower than the allowable concentration of Hg < 2 + > in food specified in food safety standards, and the problems of low sensitivity and poor stability of Hg < 2 + > detection based on carbon quantum dots in the prior art are solved.

The invention discloses a method for detecting different types of mercury through light switching of aniline carbon dot gold nano-enzyme, which comprises the following steps: synthesizing aniline-carbon dots through a microwave method, synthesizing aniline carbon dot gold nano-enzyme through a solvent evaporation method by taking the carbon dots as a reducing agent, specifically forming gold amalgam with methyl mercury under the condition of no light, and detecting different types of mercury through the light switching of the aniline carbon dot gold nano-enzyme. The formation of Au-coated HgNPs leads to high agglomeration of the nano-enzyme and destroys catalytic active sites. The effective adsorption of 3, 3, 5, 5-tetramethyl benzidine is hindered, so that a Raman signal is reduced at 1605cm <-1 >; photogenerated electrons generated under the illumination condition promote reduction of Hg (II) and promote formation of Au-coated HgNPs, the aggregation degree of amalgam formed by Hg (II) is low, more electromagnetic hot spots are generated in the forming process, and therefore a Raman signal is enhanced; the method is applied to detection and analysis of mercury types in a water body, and has the characteristics of high sensitivity, strong specificity, simplicity in operation, rapidness and the like.

1. Name of the product in this design: Microwave Graphene Production Equipment. 2. Purpose of this design: for the production of graphene. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to a method for preparing ROS (reactive oxygen species) response carbon dots by a one-step microwave method, which comprises the following steps: adding ultrapure water into citric acid, betaine and 4-hydroxyphenylboronic acid, and uniformly mixing to obtain a uniform precursor solution; reacting for 3 to 5 minutes under the condition that the power of a microwave oven is 700 to 800 W; after the reaction, naturally cooling, filtering, transferring into a dialysis bag, and dialyzing at room temperature by taking deionized water as a dialysate; and freezing and drying. The core reaction of the one-step microwave method only needs 3-5 minutes, the total preparation period is less than or equal to 30 hours, and high-temperature and high-pressure equipment is not needed; the raw materials are laboratory conventional reagents, the cost is low, and batch production can be realized; the kit has specific response to H2O2, the detection limit is less than or equal to 0.8 mu M, and the anti-interference capability is strong; the carbon dots can be used for quantitative detection of H2O2 in a biological system (such as cells and tissue homogenate), can also be used for ROS content analysis in an environmental water sample and a food sample, are good in biocompatibility and strong in anti-interference capability, and can be suitable for ROS detection inside and outside an organism and in the environmental system.

The application discloses a method for preparing micro-nano copper oxide powder by a microwave method and application thereof, and comprises the following steps: a) preparing a copper ion solution; b) adding a dispersing agent and a surfactant; c) adding urea; d) microwave heating reaction; e) product separation and purification; and f) drying and calcination. The application utilizes the rapid heating characteristics of microwave radiation, combines the action of urea, adds a dispersing agent such as polyvinylpyrrolidone (PVP) and a surfactant in the copper ion solution, and prepares copper oxide nanoparticles with a particle size distribution of 50-100 nanometers and even controllable micron level, and the copper oxide nanoparticles have good crystal structure and dispersibility; and the method has the advantages of simple process, fast reaction speed and low energy consumption, and the obtained copper oxide nanoparticles can be used for preparing high-performance and high-purity copper oxide nanomaterials, and have wide application prospects.

The application discloses a method for rapidly and selectively detecting mercury by using dithiothreitol carbon dot-based nanoszyme, wherein dithiothreitol-carbon dots are synthesized by a microwave method, the carbon dots are used as a reducing agent, and dithiothreitol carbon dot-based nanoszyme is synthesized by a solvent evaporation method for secondary reduction; the nanoszyme can selectively form gold amalgam with Hg(II); the dithiothreitol carbon dot-based nanoszyme has negative charges on the surface and can be effectively combined with positively charged Hg(II); the addition of Hg(II) can significantly enhance the activity of the oxidase-like enzyme, and catalyze 3,3', 5,5'-tetramethylbenzidine with low Raman activity to be converted into blue oxidized TMB (oxTMB) with high Raman activity; the concentration of Hg(II) has a linear relationship with the Raman signal intensity of oxTMB, and the detection time is within 15 min; the method can be applied to the selective detection and analysis of Hg(II) and has the characteristics of high sensitivity, strong anti-interference, simple operation, rapidness and the like.

The application discloses a kind of high-dispersion cobalt-based catalyst and its preparation method and application, belong to cobalt-based catalyst technical field, the present application with four carboxyl phthalocyanine cobalt and nitrogen defect carbon nanotube as raw material, through molecular self-assembly in organic solvent and form pre-assembly complex, then the pre-assembly complex is programmed microwave heating, obtain the high-dispersion cobalt-based catalyst, the present application utilizes the means that specificity molecular precursor and carrier defect engineering are combined, by liquid phase pre-assembly constructs "molecular anchor-anchor position" pre-connection system, again with the principle of programmed microwave energy precise input, successfully solve the key technical problems that existing microwave method preparation cobalt-based catalyst when metal atom is easy to gather, active site structure is uncontrollable and catalytic performance is mediocre etc..

The application belongs to the technical field of fluorescent probe detection, and particularly relates to a kind of blue fluorescent carbon quantum dots and its application. The application takes thioflavin T as raw material, ethanol as solvent, and synthesizes blue fluorescent carbon quantum dots with large conjugated structure through simple one-step microwave method. The carbon quantum dots are difficult to dissolve in water and easy to dissolve in organic solvents, and have sensitive fluorescence response to ethanol in the mixed solution of ethanol and water. Using the carbon quantum dots as fluorescent probe, the rapid and efficient detection of ethanol content in liquor can be realized by using ordinary fluorescence spectrometer, and the application has the advantages of convenient operation, high sensitivity, short response time and the like, and has broad application potential to develop portable alcohol detection scheme.

The invention discloses a carbon cloth-based composite material, a preparation method and application in a supercapacitor, and belongs to the technical field of supercapacitor electrode materials, and the method comprises the following steps: dissolving nickel nitrate hexahydrate, copper nitrate pentahydrate and an organic ligand containing carboxyl and amino in N-methyl pyrrolidone, adjusting the pH value to 6.07.0, and stirring to form a uniform mixed solution; the preparation method comprises the following steps: carrying out ultrasonic and microwave synergistic activation on pretreated carbon cloth, immersing the carbon cloth in a mixed solution for gradient heating solvothermal reaction to obtain a flexible Ni-Cu bimetal MOF / carbon cloth composite material, immersing the flexible Ni-Cu bimetal MOF / carbon cloth composite material in a composite vulcanizing agent solution prepared from thioacetamide and potassium sulfide, and sequentially carrying out segmented water bath vulcanization and gradient calcination treatment to obtain the flexible Ni-Cu bimetal MOF / carbon cloth composite material. The carbon cloth-based composite material is obtained. The flexible core-shell porous sulfide / carbon cloth composite material with high specific surface area, high specific capacitance, excellent cycle stability and low internal resistance is prepared, the process is mild, the solvent can be recycled, and the composite material has good industrial economy and environmental friendliness.

The application discloses a method for extracting effective components in peels, synergistically wet-mechanical activation and recycling Li in positive electrode materials of waste lithium batteries. The method uses cheap and easily available ethanol aqueous solution as an extracting agent, extracts effective components in peel waste by using an ultrasonic method, strengthens the extraction rate of organic acids, total phenols, total flavonoids and other antioxidant components in the peels by using a microwave method, and co-ball-mills the positive electrode battery powder and the peel extracting solution by using a wet-mechanical activation method to recycle Li elements. The ethanol aqueous solution used in the application is non-toxic and environment-friendly, the ultrasonic-microwave extraction synergistically wet-mechanical activation realizes efficient recycling of Li in the positive electrode materials of the waste lithium ion batteries. The recycling method is green, environment-friendly, economic, efficient and simple in process, and meets the requirements of industrial application of the recycling industry of the positive electrode materials of the waste lithium ion batteries.