176 results about "Ion trapping" patented technology

The invention discloses a high-pressure soft water medium treatment and supply system, which belongs to the technical field of seawater desalination treatment, and comprises a multi-dimensional ion detection module for detecting the concentration distribution characteristics of target inhibition ions in original seawater to generate a corresponding coating material selection instruction; the electric field dynamic coupling module captures a termination signal according to the coating material selection instruction; the shock wave generation module starts a main pump to generate fluid shock waves to execute sediment breaking action according to the termination signal; the monitoring module is used for monitoring the finally output softened water ion concentration and reversely calculating the pollution index of the coating surface; and the heat cycle feedback device is used for starting a self-cleaning mode according to the pollution index and transmitting waste heat in the cleaning process to the pump set. The electric field dynamic coupling adsorption and fluid shock wave cooperative treatment technology is adopted, high-efficiency ion capture, dynamic sediment removal and waste heat recycling can be achieved, energy consumption is remarkably reduced, and continuous and stable operation of the system is guaranteed.

The invention discloses a functional fracturing fluid directly prepared from flow-back fluid of complex water quality. The fracturing fluid is prepared by directly adding a salt-tolerant polymer and an ion trapping agent into the flow-back fluid. The addition amount of the salt-tolerant polymer accounts for 0.15-0.3% of the total mass of the fracturing fluid, and the addition amount of the ion trapping agent is 100-500ppm. The salt-tolerant polymer is prepared by copolymerization of acrylamide, a salt-tolerant monomer and an allyl quinoline monomer, and the molecular weight of the polymer is 4-15 million. The salt-tolerant monomer is acrylamide polyoxyethylene sodium benzenesulfonate or acrylamide sodium sulfonate. The ion trapping agent is prepared from amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), ethylene glycol bis (2-aminoethyl ether) tetraacetic acid, p-methylphenyl diethanol amine, 2, 3-epoxypropyl trimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, citric acid and tetrahydrofurfuryl acrylate. The fracturing fluid can be directly prepared from the flow-back fluid, the flow-back fluid does not need to be pretreated, and repeated utilization of the fracturing flow-back fluid is achieved.

The invention belongs to the technical field of composite materials, and discloses a basalt-based composite nanomaterial as well as a preparation method and application thereof. According to the invention, ZIF-67 in MOF is innovatively loaded on basalt nanosheets, so that not only can the dispersity and interfacial compatibility of basalt be improved and the sheet layers be prevented from being agglomerated in the coating, but also micropores possibly existing among the nanosheets can be blocked through a porous structure of the basalt, and the shielding effect and the penetration resistance of the whole coating are improved. In addition, the introduction of ZIF-67 endows the composite material with more functional regulation and control possibilities, such as ion capture, intelligent slow release and the like, so that the protection performance of the coating in a complex environment is further enhanced. Compared with a traditional filler, the composite structure has the advantages of being controllable in cost, excellent in performance, environmentally friendly and the like, and a new thought is provided for functional design of a water-borne epoxy resin anticorrosive coating.

To improve the performance of a mass spectrometer.SOLUTION: An ion trap type mass spectrometer that ionizes a sample adhering to a test object and separates ions on the basis of the mass and charge, comprises: a heating unit 1 which heats and vaporizes a sample; a sample introduction tube 10 which introduces the sample vaporized by the heating unit 1 to an ion source 15; the ion source 15 which applies a charge to the sample; a container 210 whose inside is in the vacuum state; a first pore 51 which introduces the sample ionized by the ion source 15 to the container 210; an ion trap unit 300 which is provided in the container 210; and a second pore 71, an intermediate lens 90 and an adjustment lens 110 which are sequentially provided between the first pore 51 and the ion trap unit 300 and transports the ions being the sample introduced to the container 210 to the ion trap unit 300. In the adjustment lens 110, the amount of ions passing through the adjustment lens 110 is controlled by a control unit connected to the mass spectrometer.SELECTED DRAWING: Figure 1

The invention relates to the field of electronic packaging materials, and discloses an epoxy molding compound as well as a preparation method and application thereof. Based on the total weight of the epoxy molding compound, the epoxy molding compound contains 13 to 20 weight percent of epoxy resin, 6 to 14 weight percent of a curing agent, 0.05 to 0.2 weight percent of a curing accelerator, 70 to 78 weight percent of filler, 0.1 to 1 weight percent of a coupling agent, 0.1 to 4 weight percent of a stress modifier, 0.1 to 2 weight percent of a release agent, 3 to 8 weight percent of a flame retardant, 0.01 to 0.3 weight percent of an ion trapping agent and 0.3 to 0.6 weight percent of a coloring agent, wherein the curing accelerator is 2-undecylimidazole, and the curing accelerator is 2-undecylimidazole; and the coupling agent is gamma-mercaptopropyl trimethoxy silane and / or gamma-glycidyl ether oxypropyl trimethoxy silane. The invention further discloses a preparation method of the silane coupling agent. The epoxy molding compound is simple to prepare, shows relatively high bonding performance and demolding performance when being used for packaging semiconductor components, and has relatively high operability and reliability.

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and / or operation of quantum information processing (QIP) systems including an ion trap and a multiple-zone addressing system, and more particularly, to a large field-of-view Raman system having a micro-or metalens array. In some aspects, the ion trap is configured to confine at least a first trapped ion chain and a second trapped ion chain. In some aspects, the multiple zone addressing system includes a first optical addresser, a second optical addresser, and a combining region.

Disclosed herein are transition and / or heavy metal cation-capturing membranes constructed from zinc imidazole salicylaldoxime (ZIOS) nanosheets deposited on membrane supports, and methods of making and using such metal cation-capturing membranes. In a non-limiting embodiment, the membrane support comprises polyvinylidene fluoride (PVDF) membranes which have been modified with polydopamine (PDA) and polyethyleneimine (PEI). Three exemplary methods for fabricating the metal cation-capturing membranes include (1) in-solution hydrothermal growth, (2) vacuum-assisted coordination growth, and (3) interfacial coordination growth methods. The membranes may be tuned regarding textural properties and the adhesion of the ZIOS to the membrane support.

The invention provides an anti-PID multi-layer composite photovoltaic packaging adhesive film and a preparation method and application thereof.The adhesive film comprises a first EVA adhesive film layer, a second EVA adhesive film layer and a third EVA adhesive film layer which are sequentially stacked, the first EVA adhesive film layer comprises an acid absorbent, the second EVA adhesive film layer comprises an ion trapping agent, and the third EVA adhesive film layer comprises a second EVA adhesive film layer and a third EVA adhesive film layer which are sequentially stacked. And the third EVA adhesive film layer comprises an ion trapping agent and an acid absorbent. The acid absorbent is added into the first layer of the anti-PID multilayer composite photovoltaic packaging adhesive film to absorb acetic acid generated by EVA hydrolysis, so that the reaction between the acetic acid and sodium salt on the surface of glass is effectively reduced; an ion trapping agent is added into the second layer to effectively block sodium ion migration, and a dual initiation system improves the crosslinking degree to further block ion migration; an ion trapping agent is added into the third layer to further absorb free ions, and an acid absorbent prevents acid corrosion to the battery piece and the lead; the multi-layer structure synergistically realizes high-efficiency PID resistance.

The invention discloses driving oil for new energy hybrid power automobile power and a preparation method thereof, and particularly relates to the technical field of driving oil, the driving oil comprises 70-85% of base oil, 0.8-2.5% of a conductive inhibitor, 1-3% of a nanometer heat conduction agent, 4-8% of a viscosity index improver, 0.1-0.5% of an ion trapping agent, 3-5% of an anti-wear reagent at extreme pressure, 0.5-1.5% of an antioxidant and 0.001-0.01% of an anti-foaming agent. The preparation method comprises the following steps: S1, base oil pretreatment, S2, nano heat conduction agent in-situ modification, and S3, gradient temperature control compounding. Through compounding of the base oil in a specific proportion and the synergistic effect of multiple additives, the problems of insufficient insulativity, easy oxidation, poor viscosity stability, low heat conduction efficiency, poor material compatibility and the like of traditional oil in a hybrid power system are solved, effective protection of a motor and an electric control system is realized, the heat management efficiency is improved, and the service life of the hybrid power system is prolonged. And the service life of oil is prolonged, the maintenance cost is reduced, and the special requirements of power and driving systems of hybrid vehicles are met.

Methods and systems for multi-beam, parallel-beam, deterministic, or super mass spectrometry that include an ion source that produces ions, and two or more ion trapping devices or mass spectrometers, each having an independent sampling inlet. The two or more ion trapping devices or mass spectrometers receive the ions from the ion source via the sampling inlet of each of the ion trapping devices or mass spectrometers such that each sampling inlet provides an ion beam to each corresponding ion trapping device or mass spectrometer.

Embodiments of the present application provide a separator, a preparation method thereof, a secondary battery, and an electric apparatus. The separator includes a first base film, a coating, and a second base film, where the coating is disposed between the first base film and the second base film, the coating includes an ion-trapping agent, and a reduction potential of the ion-trapping agent relative to lithium metal is 0 V to 2 V. A secondary battery containing the separator exhibits improved cycling performance.

The invention belongs to the technical field of electrocatalytic materials, and discloses a CeO2 / NiCo2O4 heterojunction oxygen evolution reaction electrocatalyst and a preparation method thereof. According to the electrocatalyst, a composite protection layer composed of nitrogen-doped carbon quantum dots and CeO2 is constructed on the surface of a NiCo2O4 nanosheet array, cobalt ions are captured and dissolved out through pyridine nitrogen, reintegration is promoted through CeO2 oxygen vacancy, and interface dynamic self-repairing is achieved. And the nitrogen-doped carbon quantum dots are embedded into the CeO2 layer and are in direct contact with NiCo2O4 to synergistically inhibit cobalt loss and maintain structural integrity. By constructing the CeO2 / nitrogen-doped carbon quantum dot composite interface layer with dynamic ion capture and self-repairing capabilities, the problems of structure instability and performance degradation caused by cobalt ion dissolution of the NiCo2O4-based oxygen evolution reaction electrocatalyst under the working condition of strong oxidizing property are successfully solved; the method has important application value and industrialization prospect in the technical field of green hydrogen energy electrolyzed water.

According to the ion regulation and control device, the ion guide device, the control method, the device, the equipment and the ion guide system provided by the invention, the first guide element and the deflection force field generation module are arranged, under the condition that ions are injected into the first guide element, the first guide element is controlled to apply the reverse electric field opposite to the ion transmission direction, and the deflection force field is generated; thereby trapping ions within the first guide element; controlling the deflection force field generation module to work so as to enable the ions in the first guide element to generate radial deflection; and under the condition that offset is completed, the first guide element is controlled to cancel the reverse electric field so that the first guide element can move in the transmission direction, ions in the first guide element can generate radial offset through the deflection force field generation module, the ions can be more uniformly distributed in the radial direction, and therefore the space area utilization rate is increased, and the transmission efficiency is improved. And the influence of the space charge effect is reduced.

A method for cooling at least one ion (8) within a capture potential of an ion trap (2), comprising: - capturing the at least one ion (8) in the capture potential, wherein the at least one ion (8) oscillates about a potential minimum of the capture potential between a first inflection point region (13) and a second inflection point region (14), - illuminating the at least one ion (8) with a laser beam in the first inflection point region (13) and / or the second inflection point region (14) for cooling the at least one ion, wherein the laser beam has a beam center characteristic of a peak intensity and the beam center is spaced from the potential minimum, and - decreasing a distance of the beam center from the potential minimum until the beam center overlaps with the potential minimum, for further cooling of the at least one ion. Furthermore, a system (1) is specified.

An apparatus fortime-of-flight, TOF, tandem mass spectrometry comprises an ion source for providing precursor ions, a linear ion trap comprising a set of electrodes configured for receiving the precursor ions into the ion trap. A voltage source is configured for applying to the set of electrodes a trapping voltage(s) configured to generate an axial trapping potential field forming a potential barrier to axially trap the received precursor ions within the linear ion trap, and for applying to the set of electrodes an RF voltage(s) configured to generate a radial trapping potential field to radially trap received precursor ions. The voltage source selectively changes the radial trapping potential field to increase the kinetic energy of precursor ions in the ion trapping region so that precursor ions can overcome the potential barrier thereby axially ejecting the selected precursor ions from the linear ion trap. A collision cell is configured to receive the ejected precursor ions and to apply to them a process of collision-induced dissociation to generate product ions therefrom. A mass analyser, such as a time-of-flight, TOF, mass analyser, receives the product ions (and / or any remaining unfragmented precursor ions) and to apply to them a process of mass analysis.

The invention discloses a method for determining chloride ions in ethylene glycol, which belongs to the technical field of detection, and is characterized by comprising the following steps: step 1, installing an ion capture column, an anion concentration column and a quantitative sample injector on an ion chromatograph; 2, preparing a regeneration solution; 3, preparing a carbonate mobile phase; 4, preparing ethylene glycol chloride ion series standard samples according to the chloride ion concentration in the ethylene glycol sample, and establishing a standard curve; and 5, diluting the sample solution and ultrapure water according to a mass ratio of 1: 1, analyzing by using an ion chromatograph, and quantifying through a standard curve. The method solves the problem that the matrix ethylene glycol directly enters an ion chromatographic column in the analysis process, chloride ion peaks are in normal distribution, meanwhile, the analysis repeatability is improved, and the method is mainly applied to determination of chloride ions in ethylene glycol.

The invention discloses an electrolyte-resistant functional current collector, a preparation method of the electrolyte-resistant functional current collector, a pole piece and a battery. The functional current collector comprises a macromolecular base membrane layer, a base coat, a fluorine ion trapping agent layer and a metal layer from inside to outside, the fluorine ion trapping agent layer contains a fluorine ion trapping agent, and the fluorine ion trapping agent is a chemical substance capable of adsorbing fluorine ions in the surrounding environment; the preparation method comprises the following steps: performing bottoming treatment on the surface of the macromolecular base membrane to form a bottoming layer; immersing the high-molecular base membrane subjected to the bottoming treatment into a solution containing a fluorine ion capturing agent; taking out the polymer-based membrane in the solution, and drying to obtain a semi-finished product of the electrolyte-resistant modified functional current collector containing the fluorine ion capturing agent layer; and preparing a metal layer on the surface of the electrolyte-resistant modified functional current collector semi-finished product to obtain the electrolyte-resistant functional current collector. According to the invention, deplating of a metal layer during use of the battery can be avoided.

According to the present invention, there is provided a quantum processor comprising: a substrate having a first surface, a first module having an upper surface and a lower surface and having a plurality of electrodes formed on the upper surface, each electrode coupled to a signal generator configured to output a radio frequency signal to create an ion trap above the first module, and a second module having an upper surface and a lower surface and having a plurality of electrodes formed on the upper surface, each electrode coupled to a signal generator configured to output a radio frequency signal to create an ion trap above the second module, the second module being a first distance in a first direction from the first module and a controller. The substrate comprises a plurality of substrate electrodes formed on its first surface and located at least between the first module and the second module, the electrodes being electrically coupled to a substrate signal generator configured to output a radio frequency signal to create an ion trap above a space between the first module and the second module, and the controller is configured to control the signal generator.

The invention relates to the technical field of surface modification, and discloses a surface modification method based on an ion implantation method, which comprises the following steps: carrying out surface pretreatment on a titanium-based or cobalt-chromium-based implant; forming an interface steady-state layer by adopting low-energy nitrogen ion implantation; low-concentration oxygen ion co-injection is carried out on the steady-state layer to form a discontinuous anti-migration blocking layer; calcium ions, zinc ions and silver ions are injected in sequence, and a depth gradient structure from inside to outside is obtained through biphase modulation bias voltage; then implementing oxygen ion directional injection to form a non-stoichiometric oxide layer; performing alternating electric field aging in a water vapor and phosphate atmosphere to construct an ion trapping layer; and finally, sterilizing and sealing the treated workpiece. By constructing a multi-layer synergistic structure and a dynamic ion regulation and control mechanism, migration and agglomeration of functional ions can be slowed down, and the long-term stability of the surface of the implant is improved.

Embodiments of the present application provide a secondary battery and an electric device. The secondary battery comprises a positive electrode sheet, a separator, and a negative electrode sheet; at least one of the positive electrode sheet, the separator, or the negative electrode sheet comprises an ion trapping agent; the reduction potential of the ion trapping agent relative to lithium metal is 0-2 V. The cycle performance of the secondary battery provided by the embodiments of the present application is improved.

Provided is a method of reducing the magnitude of a quasi-static electric dipole field at the null position of an oscillating electric quadrupole field of an ion trap. The method includes trapping at least one ion in a trapping electric field. The trapping electric field includes an electric field amplitude; using an interferometry sequence including applying a first laser pulse when the trapping electric field amplitude includes a first trapping electric field amplitude; applying a second laser pulse when the trapping electric field amplitude includes a second trapping electric field amplitude different from the first electric field amplitude; and measuring a state of the ion; repeating the interferometry sequence in order to obtain a plurality of measurements of the state of the ion; determining a probability that the trapped ion changes state; and adjusting the trapping electric field based on the determined probability.

An electron capture dissociation apparatus. The apparatus comprises a linear ion trap (3) consisting of an even number of strip electrodes (3.1), wherein an in-phase radio frequency voltage and an anti-phase radio frequency voltage are alternately applied to the strip electrodes (3.1) of the linear ion trap (3) in sequence, such that there is a saddle point potential at the central axis of an ion trapping space; and electrons emitted by an electron emission source (1) are accelerated by means of an accelerating electrode (2.1), are then focused by means of a focusing lens (2.2), and then enter the ion trapping space (3.2) through an electron introduction slot (3.3). The potential of the electron emission source (1) is set to change relative to the saddle point potential within a radio frequency cycle according to a predefined pattern, such that electrons enter the linear ion trap (3) through the electron introduction slot (3.3) when the radio frequency voltages on the strip electrodes (3.1) where the electron introduction slot (3.3) is located are in a positive half-cycle, and decelerate, before reaching the central axis of the ion trapping space (3.2), to an energy range where electron capture dissociation may occur, thereby improving the time window and dissociation efficiency of electron capture dissociation.

This invention proposes a long-term low-conductivity composite treatment method for the inner cavity of a hydrogen fuel cell stack heat sink core. The method includes pre-treating the surface of the heat sink core, coating it with a slurry, curing it, and cleaning it. The slurry comprises pH-responsive slow-release microcapsules, which, from the inside out, consist of an ion trapping agent and mesoporous silica grafted with polyacrylic acid. A coating is formed on the surface of the heat sink core by coating and curing the slurry. This slurry integrates the atomic-level physical barrier function of graphene with the intelligent chemical trapping function of the pH-responsive microcapsules, achieving multi-layered protection of "physical barrier as the main component, chemical trapping as a supplement, and intelligent response." This allows the coolant conductivity to be stably controlled below 5 μS / cm under dynamic operating conditions for thousands of hours.

The invention discloses an ion trapping light path polarization and power stability control device and method, and solves the problem that the stability of the power and polarization of a trapping ion laser beam is insufficient. An ion trapping optical path polarization and power stability control device comprises a rotating mirror bracket, a first 1 / 2 wave plate, a sampling module and a feedback module. And the light path of the target light beam sequentially passes through the first 1 / 2 wave plate and the sampling module and then is emitted. The rotating mirror bracket is used for adjusting the polarization direction of the first 1 / 2 wave plate. The sampling module is used for collecting a polarization signal and a power signal of a target light beam and calculating a proportion signal of the polarization signal and the power signal. And the feedback module is used for receiving the proportion signal and sending a feedback result signal according to the proportion signal to adjust and rotate the spectacle frame. According to the invention, polarization and power feedback control is carried out on each light beam of trapping ions. The stability of ion fluorescence is improved.

The invention discloses a green residue harmless treatment process based on rare earth calcium residues, and belongs to the technical field of rare earth metal acquisition and waste treatment. The process aims to solve the problems of heavy environmental pollution, high energy consumption, poor selectivity and the like in the prior art. The core of the invention is as follows: a bifunctional complexing agent (e.g., a bifunctional complexing agent) containing an ion capture terminal and a parent terminal is provided; dissolving in a supercritical carbon dioxide fluid to form an extraction medium; enabling the medium to be in contact with the pretreated rare earth calcium slag at the temperature of 40-100 DEG C and the pressure of 10-30 MPa, extracting rare earth elements with high selectivity and forming a rare earth-complex; finally, the rare earth-complex is separated out through pressure reduction, and the carbon dioxide and the complexing agent are recycled. The process realizes the rare earth recovery rate gt; the product purity is gt; the complexing agent and the single cycle utilization rate are gt; and the leaching concentration of fluoride in the treated residues is lower than the national standard limit value, harmlessness is achieved, and the method has the remarkable advantages of being environmentally friendly in the process, low in energy consumption, high in selectivity, simplified in flow and the like.

The present teachings generally relate to generating a pseudo-barrier via an axial RF field. A first voltage is applied to a first pair of rods arranged in a multi-pole configuration, a second RF voltage is applied to a second pair of rods, and a difference between magnitudes and / or phases of the first and second RF voltages is adjusted. As discussed in more detail herein, such a pseudo-barrier may be employed in a variety of different applications. As an example, such a pseudo-barrier may be used to trap ions within a rod group that includes a plurality of rods arranged in a multi-pole configuration. In other applications, adjusting the height of the pseudo-potential barrier established in the rod set along with the application of a DC potential between the rod set and an external electrode can be used to cause mass-selective extraction of ions trapped within the rod set. In other applications, such a pseudo-barrier may be employed in a multiplexing method to perform mass spectrometry.

Methods and systems for ion trap type resonant collision induced dissociation (CID) on labile compounds to drive selective dissociation along desired dissociation pathways are disclosed. Specifically, the present disclosure includes, systems, methods, and computer readable media (CRM) configured to introduce ions of at least one labile compound with multiple dissociation pathways into a trapping area of a dissociation cell. The dissociation cell is configured to generate a substantially quadrupolar radio frequency electrostatic confinement potential in the ion trapping region. The kinetic energy of selected precursor ions is increased while a selective dissociation parameter is maintained to cause the precursor ions to selectively dissociate primarily to first-generation products without being ejected from the trapping area. The selective dissociation parameter is determined in part by the Mathieu q value and controls the maximum kinetic energy or velocity of the ions.

The present invention provides a bottom filling glue for inhibiting the sedimentation of fillers, a preparation method thereof and a chip packaging structure. The bottom filling glue includes the following components by mass percentage: 58% to 70% filler, 21% to 27% epoxy resin, 10% to 14% curing agent, 0.1% to 0.2% carbon black, 0.2% to 0.4% accelerator, and 0.1% to 0.3% ion capture agent; firstly, the epoxy resin and the ion capture agent are mixed so that the ion capture agent can be evenly dispersed in the epoxy resin to obtain a premix; then, other components are added to the premix so that the raw material components can be fully mixed, and after dispersion treatment by a three-roll grinder and vacuum degassing, a bottom filling glue with uniform dispersion and stable fluidity is obtained. When the bottom filling glue provided by the present invention is used to fill and encapsulate the chip, the glue liquid can be evenly distributed in the chip and the substrate, and the formation of the primary battery is inhibited by the ion capture agent, thereby preventing the sedimentation of the filler, and after curing, it has excellent heat resistance and strong adhesion to the substrate and the chip.

The invention discloses an optical transparent adhesive tape with an electric tuning refractive index and a preparation method thereof. The optical transparent adhesive tape comprises a polymer matrix; the core-shell structure liquid crystal microcapsule is dispersed in the polymer matrix, the core of the core-shell structure liquid crystal microcapsule contains nematic phase liquid crystals and polymerizable monomers, the shell of the core-shell structure liquid crystal microcapsule is a cross-linked polymer layer, and an ion trapping agent is distributed in the shell; the transparent electrodes are arranged on the two sides of the polymer matrix; wherein the orientation of liquid crystal molecules in the inner core is changed by applying voltage to the transparent electrode, so that the dynamic regulation and control of the overall refractive index of the electrically tuned refractive index optical transparent adhesive tape are realized. According to the electrically tuned refractive index optical transparent adhesive tape provided by the invention, the OCA is successfully upgraded from a passive bonding material to an active optical regulation and control element, low-voltage, rapid and stable regulation and control of the refractive index are realized while excellent bonding performance and optical performance are maintained, and a brand new technical path is opened up for improving the display quality and realizing a novel display function.

The invention belongs to the field of adsorbents, and particularly relates to a high-temperature-resistant titanium-based lithium ion selective adsorbent with high-selectivity lithium ion capturing capability, which is prepared by the following steps: preparing a zirconium / aluminum co-doped precursor based on a solid-phase reaction in an ozone environment; then carrying out short-time thermal shock oxidation modification on the high-temperature precursor and hydrogen peroxide at room temperature to introduce active sites, and then carrying out gradient pickling selective lithium removal. The equilibrium adsorption capacity of the adsorbent is 42-45mg / g, and the selectivity coefficient to Li < + > / Mg < 2 + > is greater than 1200; after 10 times of adsorption-desorption cycles, the adsorption capacity retention rate is higher than 93%. Particularly, the retention rate of the specific surface area is still more than 85% after calcination treatment at the high temperature of 800 DEG C for 2 hours; the adsorption and desorption process is kept at the temperature of 90 DEG C, and the capacity retention ratio is still 85% or above, so that the adsorbent can be used for treating high-temperature brine; the adsorbent is good in high temperature resistance.