47 results about "Zirconium doping" patented technology

The invention relates to a proton exchange membrane adulterated with sulfonation zirconium phenylphosphonate which is characterized in that: the film-making material thereof consists of a sulfonation high molecular material and sulfonation zirconium phenylphosphonate; wherein, the sulfonation degree choice of the sulfonation high molecular material is 20 percent to 85 percent which accounts for 60 percent to 95 percent of the mass percent of the film-making material; and the sulfonation degree choice of the sulfonation zirconium phenylphosphonate is 30 percent to 90 percent which accounts for 5 percent to 40 percent of the mass percent of the film-making material. Besides, a porous supporting material can be added to the film so as to improve the strength of the film and reduce the deformability thereof. The film-making material fills the holes of the porous supporting material and forms a layer of thin film on the outer surface of the porous supporting material. The proton exchange membrane is applicable to intermediate temperature direct methanol fuel cells so as to improve the application temperature of the proton exchange membrane and the property of the fuel cells.

The invention relates to a zirconium-doped vanadium-based oxide catalyst for selectively catalyzing and reducing the nitrogen oxide through ammonia, and a preparation method thereof. The catalyst is a metal oxide catalyst which is formed by loading zirconium and vanadium oxide onto the surface of titanium tungsten powder. Through the zirconium doping method, the catalytic properties such as high-temperature stability of the traditional vanadium-based catalyst and the N2 (nitrogen) generation selectivity can be greatly improved, the prepared zirconium-doped vanadium-based oxide catalyst is suitable for a nitrogen oxide catalytic purifying device adopting the diesel exhaust as a representative movable resource and the smoke of a coal plant as a representative fixed source.

The invention relates to a zirconium-doped lithium-rich cathode material of a lithium ion battery and a preparation method of the zirconium-doped lithium-rich cathode material, and belongs to the technical field of inorganic materials. A chemical formula of the zirconium-doped lithium-rich cathode material of the lithium ion battery provided by the invention is Li1.2(Mn0.54Ni0.13Co0.13)1-xZrxO2 (x is less than 1 and greater than 0); the adopted preparation method is a hydrothermal method; the preparation method is simple; the reaction condition is easy to control; reduction of agglomeration of particles is facilitated; and the chemical reaction in a hydrothermal system has relatively high reaction rate. The zirconium element doped into the zirconium-doped lithium-rich cathode material of the lithium ion battery prepared by the method is relatively low in dosage; the reached effect is very obvious; and compared with the non-doped material, according to the material doped with 3% of zirconium, the performances such as the specific capacity and the rate of the battery are greatly improved.

The invention discloses a preparation method of a nanoscale zirconium-doped lithium titanate material. Nanoscale lithium titanate is prepared by the method, and simultaneously is modified through doping zirconium. According to the preparation method, chemical components and grain sizes of the lithium titanate are effectively controlled by using hydro-thermal treatment, the temperature during subsequent treatment is greatly reduced, and grains are prevented from being agglomerated; and the preparation method is easy to implement in industry. The lithium titanate is doped with the zirconium in a preparation process, so that the specific discharge capacity of the material is increased at high magnification. Simultaneously, the gas expansion problem existing in the charge-discharge process of lithium titanate batteries is solved to a certain extent. The material prepared by the method has high magnification and high specific capacity and can be applied to the batteries needed for various portable electronic equipment and various electric vehicles.

The invention discloses a lithium ion battery positive plate using a cobalt-free high-nickel positive electrode material, and the positive electrode comprises a positive electrode current collector and a positive electrode active substance layer loaded on the positive electrode current collector; the positive electrode active substance layer comprises the cobalt-free high-nickel positive electrodematerial, a conductive agent and a binder, the molecular formula of the cobalt-free high-nickel positive electrode material is Li(Ni<1-x>Mnx) ZryO2, wherein 0.1<=x<=0.5, and 0.002<=y<=0.003. The preparation method of the cobalt-free high-nickel positive electrode material comprises the following steps: preparing a (Ni<1-x>Mnx)Zry(OH)2 precursor through a coprecipitation method; and mixing and calcining the precursor and LiOH.H2O. The zirconium-doped cobalt-free high-nickel layered positive electrode material is used, so the cycle performance and the rate capability of the positive plate can be effectively improved; the precursor prepared by using the coprecipitation method is complete in morphology and uniform in size, the tested Zr content is basically consistent with the doping amount,and the structural stability and the high-temperature stability are good.

The invention discloses a zirconium doped cerium vanadate denitration catalyst which is characterized in that the denitration catalyst is a nano material having a rodlike or granular structure, wherein the mole ratio of zirconium doping amount to metal cerium is x:(1-x), and x is larger than 0.05 and less than 0.8. The invention also discloses a preparation method and application of the zirconium doped cerium vanadate denitration catalyst. The catalyst is prepared by adopting a hydrothermal process, is wide in operating temperature window, can reach NOx removing rate of 80% or above at the temperature of 150-375 DEG C, also has the advantages of good thermal stability, excellent H2O and SO2 poisoning resistance, simple preparation process, low cost and the like, is suitable for treatment of nitric oxide in a fixed source and a moving source and is applicable to practical application.

The invention relates to a titanium and zirconium co-doped carbon-coated lithium iron phosphate material and a preparation method and application thereof, the chemical expression of the material is Li1-yZryFe1-xTixPO4 / C, titanium is doped to the Fe position, zirconium is doped to the Li position, 0.001 < = x < = 0.05, 0.001 < = y < = 0.02; the preparation method comprises the following steps: mixing iron phosphate, lithium carbonate, a carbon source, a titanium source and a zirconium source in a liquid-phase medium, carrying out ball milling and sand milling on the mixture to a certain slurry particle size, granulating by adopting a spray drying technology, and finally sintering the dried spray material in an atmosphere furnace. The material is applied to a lithium ion battery as a positive electrode material. The titanium and zirconium elements are doped into the carbon-coated lithium iron phosphate, so that the ion and electron transmission capability of the lithium iron phosphate is effectively enhanced, the compaction density of the material is improved, and the carbon-coated lithium iron phosphate is very suitable for being used as a high-energy and high-power-density lithium ion power battery positive electrode material.

This invention discloses a method for synthesizing nanometer anatase titanium dioxide doped by non-aquo zirconium. In this method, C1-C9 organic acid (1), tetrabutyl titanate (2) and zirconium isopropoxide (3) are used as raw materials with molar ratio of: (1):(2)=(2-20):1, After mixing the mixture is put in a reactor, heating to 80-240deg.C for reaction for 8-24hrs, and then is washed by ethanol for 3-5times, being dried under 80-160 deg.C to obtain this inventive product. This invention has advantages of: simple process, convenient operation, mild reaction condition, high yield, high crystallinaty of final product, high specific surface area and small graininess.

The invention discloses a multi-resonance absorption zirconium-doped barium ferrite broadband wave-absorbing material having an expression formula of xBaZr[n]Fe[12-n]O[19]+(1-x)BaZr[m]Fe[12-m]O[19], wherein x is 0.1-0.9, n is 0.1-0.2, m is 0.3-0.5, and m is not equal to n. A preparation process comprises the steps: preparing a BaZr[n]Fe[12-n]O[19] powder; preparing a BaZr[m]Fe[12-m]O[19] powder; and then mixing and grinding the BaZr[n]Fe[12-n]O[19] powder and the BaZr[m]Fe[12-m]O[19] powder. A composite system is formed by the materials having different intrinsic parameter peak values, intrinsic parameters in the formed wave-absorbing system have corresponding different characteristic resonance frequencies, the appearing range of the resonance frequency of the composite material is greater than the appearing ranges of the own resonance frequencies of the compositing single-phase materials. The wave-absorbing material can be widely applied to the corresponding electromagnetic protection and microwave stealth fields.

A capacitor and methods for manufacturing the capacitor are disclosed. The method may include forming a first electrode on a substrate, forming a dielectric layer on the first electrode, the dielectric layer having a first silicon oxide (SiO2) layer, a zirconium-doped hafnium oxide (Zr-doped HfO2) layer and a second silicon oxide layer sequentially, and forming a second electrode on the dielectric layer.

The invention belongs to the technical field of functionalized nanometer electrode materials, and relates to a preparation method of low-crystallinity zirconium-doped ferrocobalt layered double hydroxide. The preparation method comprises the following steps: dissolving a divalent cobalt source, a trivalent iron source and a tetravalent zirconium source in a deionized water solution of potassium nitrate, and carrying out stirring at a constant speed to fully and uniformly mix the above sources; placing a pretreated substrate NF in a solution obtained in the previous step, and carrying out constant-voltage electro-deposition of deposition negative potential for 600-1200 s by using a three-electrode system; and washing a prepared material, and carrying out vacuum drying at 60-80 DEG C for 2-4 hours to obtain the product. The prepared low-crystallinity zirconium-doped ferrocobalt layered double hydroxide is applied as an anode and a cathode of water electrolysis to hydrogen production through water electrolysis. The preparation method disclosed by the invention is simple and easy to operate, wide in raw material source, low in price, mild in reaction and friendly to environment. The prepared catalyst has high bifunctional electrocatalytic activity, can be applied to a full-electrolysis water electrocatalyst of seawater, and can also be used for desalting seawater.

The invention relates to a zirconium-doped mesoporous material Zr-SBA-15 as well as a preparation method and application thereof. A coordination compound generated after a complexing agent and Zr(SO4)2 are subjected to complexing is used as a zirconium source; ethyl orthosilicate is used as a silicon source; the zirconium doping is carried out on the basis of the preparation of an SBA-15 type mesoporous material; therefore, the zirconium-doped mesoporous material Zr-SBA-15 is prepared. By using the zirconium-doped mesoporous material Zr-SBA-15 as well as the preparation method and the application thereof, the problems that the Zr(SO4)2 is extremely easily hydrolyzed in an aqueous solution to generate ZrO2 to accordingly cause the prepared Zr-SBA-15 to be inhomogeneous in structure and non-uniform in zirconium distribution are solved; the prepared Zr-SBA-15 can be used as an adsorbing material for adsorbing PO4<3-> in a water body.

The invention discloses a cerium-zirconium-based composite oxide, a preparation method thereof and a supported automobile exhaust purification catalyst. The cerium-zirconium-based composite oxide is a pure cerium-zirconium composite oxide or a multi-element cerium-zirconium-based composite oxide containing an oxide of a doping element, and the cerium-zirconium-based composite oxide comprises 10-70% of cerium oxide, 20-70% of zirconium oxide and 0-10% of the oxide of the doping element; the crystal structure of the composite oxide contains a pyrochlore structure. The preparation method comprises the following steps: firstly, preparing an initial cerium-zirconium-based composite oxide with high thermal stability and high specific surface area, and then carrying out reduction treatment to obtain the cerium-zirconium-based composite oxide with high specific surface area and partial pyrochlore structure. The composite oxide prepared by the method can still keep high specific surface area and high oxygen storage / release performance even if being exposed to a relatively high temperature, the cerium-zirconium-based composite oxide with high specific surface area and the pyrochlore structure is obtained, and the problem that the high specific surface area and the pyrochlore structure are difficult to coexist is solved; catalytic activity of the automobile exhaust purification catalyst is further improved.

The invention relates to the technical field of lithium ion batteries and supercapacitors, particularly to a zirconium doped porous carbon material and a preparation method for preparing a lithium ioncapacitor battery composite positive electrode, wherein the surface of a porous carbon material is uniformly coated with a layer of nanometer Zr(OH)4 particles through a co-precipitation method, andthen heating and thermal insulation is performed in a protective atmosphere to prepare the zirconium doped porous carbon material. The preparation method for preparing a lithium ion capacitor batterycomposite positive electrode by using the zirconium doped porous carbon material comprises: (1) uniformly mixing a lithium battery positive electrode material, an electric conduction agent and the zirconium doped porous carbon material to obtain a mixed active substance; and (2) coating a current collector with the mixed active substance to obtain the composite positive electrode. According to thepresent invention, with the application of the zirconium doped porous carbon material in the preparation of the lithium ion capacitor battery composite positive electrode, the electrochemical performance and the safety performance of the capacitor battery can be improved.

The invention relates to a potassium ion battery positive electrode active material, a preparation method thereof and application thereof. The preparation method comprises the following steps: stirring and dissolving a sodium source, a titanium source, a phosphorus source and a carbon source in water, adding zirconium oxide and ethanol, carrying out ball milling treatment to obtain slurry, carrying out spray drying treatment on the slurry to obtain a precursor, carrying out vacuum annealing treatment on the precursor, and carrying out air cooling to room temperature to obtain carbon-coated zirconium-doped NaTi2 (PO4) 3.Carbon-coated zirconium-doped NaTi2 (PO4) 3 prepared by a ball milling-spray drying method is used as a positive electrode material, flaky metal potassium is used as a negative electrode material, and a potassium ion solution is used as an electrolyte to assemble the total battery; the total battery is high in energy density, long in cycle life and excellent in rate capability, the electrode material synthesis method is low in cost and environmentally friendly, the electrolyte is safe, non-toxic, stable, pollution-free and low in price, and possibility is provided for practical application of the potassium ion battery in the aspect of power grid energy storage.

The invention discloses a device for non-vacuum zirconium doping engineering in a copper alloy and the process thereof. The device comprises an induction melting furnace (1), a seal mechanism (2), a casting tube (3), a protective cover (4) and a crystallizer (5). The seal mechanism (2) is fixed on one side of the upper part of the induction melting furnace (1) through bolts. The casting tube (3) is fixed at the bottom at the other side of the seal mechanism (2). The crystallizer (5) is inserted into the lower end of the casting tube (3) through the protective cover (4). The process includes the following steps: loading, sealing, melting, refining, argon gas introduction, Zr doping, casting and testing, wherein the casting step is implemented by using the furnace, the casting tube and the crystallizer.

The invention discloses a lithium nickel cobalt manganese oxide high-nickel single-crystal positive electrode material and a preparation method thereof. The preparation method comprises the following steps: mixing and ball-milling nickel cobalt manganese hydroxide, a lithium source, zirconium oxide, tungsten oxide and sodium carbonate, then carrying out primary sintering, and crushing to obtain a nickel cobalt lithium manganate high-nickel single-crystal positive electrode material intermediate; wherein the primary sintering temperature is 50-150 DEG C higher than the normal sintering temperature; and uniformly mixing the nickel cobalt lithium manganate high-nickel single-crystal positive electrode material intermediate with a coating agent, and then carrying out secondary sintering to obtain the nickel cobalt lithium manganate high-nickel single-crystal positive electrode material. Tungsten oxide and sodium carbonate are introduced in the primary sintering process, the electrical conductivity of the material can be enhanced, the particle morphology can be changed, primary particles are refined, the characteristic that tungsten oxide and sodium carbonate are combined is utilized, zirconium oxide doping is combined, and at the high primary sintering temperature, the conductivity of the material is improved, and the conductivity of the material is improved. And the high-nickel single-crystal positive electrode material with high capacity, high dispersity and excellent cycle performance is obtained.

The invention relates to a titanium and zirconium double-doped and vanadium-coated ternary positive electrode material and a preparation method thereof, an integral ternary positive electrode material and a coating layer coating the surface of the ternary positive electrode material. The material of the coating layer comprises vanadium oxide, the ternary positive electrode material comprises a titanium element, a zirconium element and an NCM ternary precursor, and the molar ratio of Ni to Co to Mn in the NCM ternary precursor is 7: 1: 2. The preparation method comprises the steps of 1, uniformly mixing an NCM ternary precursor, lithium hydroxide monohydrate, nanoscale titanium dioxide and nanoscale zirconium oxide, sintering, stirring and mixing with ionized water with vanadium oxide again, drying, and sintering to obtain the titanium and zirconium double-doped and vanadium-coated ternary positive electrode material. The method is simple to operate, the process and the technology are easy to implement, the doping amount is easy to control, large-scale commercial application can be achieved. The method can be used for doping other ternary positive electrode materials or lithium-rich positive electrode materials.

The invention discloses a preparation method and application of a precursor of an aluminum and zirconium doped lithium nickelate positive electrode material, which particularly relate to the field of electrode materials. The method comprises the following steps of preparing a sodium metaaluminate solution, preparing product slurry and preparing a precursor, so as to obtain the special precursor spheroidic nickel hydroxide for preparing the aluminum and zirconium doped spheroidic lithium nickelate positive electrode material. The precursor prepared by the preparation method of the precursor of the aluminum and zirconium doped lithium nickelate positive electrode material can be applied to preparation of the aluminum and zirconium doped spheroidic lithium nickelate positive electrode material. The aluminum and zirconium doped lithium nickelate precursor synthesized by the method is in a spheroidic secondary particle morphology, the particle morphology is uniform, internal elements are uniformly distributed, and the tap density is high. And the lithium nickelate positive electrode material formed by mixing and sintering the precursor and lithium hydroxide has excellent electrochemical performances such as high capacity and long cycle.

The invention discloses a preparation method of a zirconium-doped cerium fluoride-coated nickel-cobalt-manganese ternary positive electrode material, and relates to the technical field of lithium ion positive electrode materials, and the preparation method comprises the following steps: (1) ball-milling and mixing a nickel-cobalt-manganese hydroxide precursor, a lithium source and a zirconium source, and sintering to obtain the zirconium-doped nickel-cobalt-manganese ternary positive electrode material; and (2) mixing a cerium salt solution with the zirconium-doped nickel-cobalt-manganese ternary positive electrode material in the step (1), stirring, adding an ammonium fluoride solution, reacting, drying, and calcining to obtain the zirconium-doped cerium fluoride-coated nickel-cobalt-manganese ternary positive electrode material. The preparation method has the beneficial effects that the residual alkali on the surface of the prepared ternary positive electrode material is reduced, and the ternary positive electrode material has high specific discharge capacity and cycle performance and high capacity retention ratio.

The invention discloses a low-electric-field high-dielectric adjustable zirconium-doped barium ferrite and a preparation method thereof. The zirconium-doped barium ferrite ceramic is a single-phase material, and part of Fe3+in a BaFe12O19 crystal lattice is replaced by Zr4+ to form Fe2+ which is introduced by zirconium doping and coexists in a system, a stable defect dipole pair is formed betweenthe corresponding Fe2+ and the related Fe3+ in the system, and the obtained zirconium-doped barium ferrite ceramic has a high dielectric constant, high dielectric adjustability and an extremely low dielectric adjustable driving electric field on the basis of excellent magnetic performance. According to the invention, a cooperative sintering process of a sol-gel preparation method, air atmosphere and high-oxygen atmosphere is adopted, the process is simple, the controllability is strong, the preparation period is short, the cost is low, and the single-phase zirconium-doped barium ferrite ceramic material with a high dielectric tuning rate under ultra-low modulation voltage can be obtained. The zirconium-doped barium ferrite ceramic has wide application in the fields of dielectric adjustabledevices and magnetic and electric composite multifunctional devices.

The invention relates to the field of preparation of novel materials, and aims to provide a preparation method of multi-purpose tin, iron and zirconium doped silicon dioxide microspheres. The preparation method comprises the following steps: adding dibutyltin diacetate, ferric oleate, zirconium tetrachloride and tetraethylortho silicate in n-propanol, and stirring to obtain a mixture A; after uniformly mixing ricinoleic acid sodium sulfovinate, n-butanol and deionized water, adding the mixture into the mixture A, and stirring to obtain mixed liquid B; keeping adding lysine, and stirring to obtain mixed liquid C; and adding zinc chloride for demulsification, and centrifugally separating to obtain powder D, and carrying out heat treatment to obtain the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres. By the powder of the invention, the shortcoming that an existing silicon dioxide high infrared emission wave band region is not superposed to an atmosphere window region is overcome, the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres can be applied to a heat-insulation coating as effective infrared emission type filler, the infrared emitting ability of the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres is greater than 0.94, and a new application field of a silicon dioxide powder material is opened up. The electrical property of a prepared silver-based conductive composite material is far higher than that of an existing product.

The present invention discloses a cerium-zirconium doped polishing solution as well as preparation method and application thereof. According to the preparation method, rare earth carbonate and basic zirconium carbonate are used as precursors, grain boundary energy in the raw materials is reduced through energy input while the granularity of the raw materials is greatly reduced through advanced high-energy ball milling. The spray drying ensures the moisture removal and the dispersion uniformity among powder particles; and then in combination with a specific secondary calcination mode, excessive growth of original crystals in the calcination process is prevented, so that crystal grains grow more completely, crystal lattices are more perfect, edges and corners are clearer in the calcination process, and the purity of the product is improved. Materials with small grain sizes and uniform grain size distribution can be obtained more easily, so that the polishing solution prepared by the method has high cutting output and high surface quality when being applied to polishing blue glass; besides, further ball milling and formula preparation of the polishing solution are completed simultaneously in the ball milling process, so that the ball milling efficiency is improved, the production period is shortened, and the environment-friendly effect is better.

The invention relates to a method for preparing a high-resistance alumina-chrome brick by doping zirconium boride. The method comprises the following steps of: 1, preparing the following raw materials in percentage by mass: 81% of Al2O3, 15% of Cr2O3, 0.75% of Fe2O3, 0.12% of SiO2, 0.32% of CaO, 0.4% of MgO, 1.25% of Na2O, 0.02% of K2O, 0.02% of Ti2 and 8% of Al (H2PO4) 3, matching the raw materials in proportion, and then adding 5% of ZrB2; 2, mixing the matched raw materials in a mixer for 1 h to achieve uniform distribution; 3, loading the uniformly mixed raw materials into a mold, and carrying out compression molding under a 150 Mpa hydraulic press; 4, drying a formed green body in a dryer for 24 hours so as to achieve the purpose of removing moisture; and 5, putting the dried green body into a sintering furnace, and sintering the green body at the temperature of 1500 DEG C for 1 hour in an oxidizing atmosphere at the sintering temperature of 1500 DEG C, heat preservation time being 1 h.

The invention discloses a preparation method of a composite lithium titanate material, and specifically discloses a preparation method of a negative electrode material of a lithium ion battery, wherein the negative electrode material is zirconium-doped and carbon-coated lithium titanate. The doping and coating can be performed in one step through adding a modifying additive, and the preparation method is simple and can be easily applied to industrial production. The obtained composite lithium titanate material is an excellent material for producing telephone lines.

The invention relates to the technical field of thermal barrier coatings, and particularly discloses a method for preparing a zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating. The method comprises the steps that powder formed by mixing ZrO2, Gd2O3 and Nb2O5 is subjected to high-temperature sintering, a sintering body is obtained, and the stoichiometric ratio of zirconia doped niobic acid is x mol%ZrO2+Gd3NbO7; the sintering body is smashed into blocks of 2-3 mm; the blocks are deposited on an alloy matrix through an EB-PVD method, and the amorphous ceramic coating with the thickness of 200-300 micrometers is obtained, and according to the technological parameters, the air pressure of a cabin is not higher than 3*10-6Torr, the deposition rate is not lowerthan 10 nm / min, and the rotating rate of a sample is not lower than 45 r / min. The amorphous ceramic coating deposited on the alloy matrix has the extremely low heat conductivity, thus a very good heatinsulation effect can be achieved on the alloy matrix in a high-temperature environment, and the use environmental temperature of the alloy matrix is improved.

The invention discloses a glass film sticking process, which comprises the following steps: (1) providing a qualified glass substrate; (2) depositing one or more functional film layers on the surface of the glass substrate, which is deposited by magnetron sputtering. way, in a working atmosphere with a vacuum level of 0.1Pa, N 2 / O 2 It is carried out under the condition that the ratio does not exceed 8; (3) Deposit a layer of zirconium mixed-doped film layer on the surface of one or more functional film systems, using magnetron sputtering deposition method, and the vacuum level is 0.12Pa Class working atmosphere, N 2 / O 2 Under the condition that the ratio does not exceed 8, the magnetron sputtering deposition method is used to deposit the functional film system layer and the zirconium mixed doped film layer. The zirconium doped film has high hardness and strong oxidation resistance, and the film layer can be avoided. A series of problems such as PE organic film, and at the same time, it has a good protective effect on the substrate film layer. During transportation and storage, it can prevent the substrate film layer from being scratched and delay the oxidation speed of the silver layer.

The invention belongs to the technical field of a catalyst material, and particularly relates to rare earth and zirconium doped cerium dioxide and a preparation method thereof. The rare earth and zirconium doped cerium dioxide is prepared from the following chemical ingredients in percentage by weight: 50 to 95 percent of cerium oxide, 5 to 40 percent of rare earth oxide and 0 to 10 percent of zirconium oxide, wherein a rare earth element is one or combination of serval kinds of elements from La, Pr, Nd or Y. The invention also provides the preparation method of the rare earth and zirconium doped cerium dioxide; after precipitating agents are added into cerium material liquid for precipitation; dispersing agents are added; water washing is performed until the electrical conductivity is smaller than 5ms / cm; firing is performed to obtain cerium oxide powder; rare earth material liquid, zirconium material liquid and cerium oxide powder are mixed; then, drying and firing are performed to obtain oxide powder. By a doping method, the surface property of oxide is changed; the flowability of lattice oxygen is improved; the aging specific surface is high; in the use process, sintering agglomeration cannot easily occur; the oxidation reduction capability of a cerium oxide based compound is greatly improved; the preparation method is scientific, reasonable and simple and is easy to implement.

The invention discloses a lithium-ion battery positive electrode sheet using a cobalt-free high-nickel positive electrode material, comprising a positive electrode current collector and a positive electrode active material layer loaded on the positive electrode current collector, and the composition of the positive electrode active material layer includes a cobalt-free high-nickel positive electrode material , conductive agent and binder, the molecular formula of cobalt-free high-nickel positive electrode material is Li(Ni 1‑ x mn x )Zr y o 2 , where 0.1≤x≤0.5, 0.002≤y≤0.003. When the cobalt-free high-nickel positive electrode material is prepared, it is first prepared by coprecipitation (Ni 1‑x mn x )Zr y (OH) 2 precursor; then combine the precursor with LiOH·H 2 O mixed calcined. The present invention uses zirconium-doped cobalt-free high-nickel layered positive electrode material, which can effectively improve the cycle performance and rate performance of the positive electrode sheet; the precursor prepared by coprecipitation method has complete morphology and uniform size, and the tested Zr content and doped The impurities are basically the same, and the structural stability and high temperature stability are good.

The invention discloses a cerium-zirconium-doped polishing liquid and its preparation method and application. The preparation method uses rare earth carbonate and basic zirconium carbonate as precursors, and through pre-high-energy ball milling, the particle size of raw materials is greatly reduced while passing The energy input reduces the grain boundary energy in the raw material, and the spray drying ensures the uniformity of dispersion between the powder particles while removing the water. After that, combined with a specific secondary calcination method, it can prevent the original crystal from growing too much during the calcination process. Make the crystal grains grow more completely during the calcination process, the crystal lattice is more perfect, the edges and corners are more distinct, and it is easier to obtain materials with small grain size and uniform particle size distribution, thus ensuring that the polishing liquid prepared by the above method is used for polishing blue glass It has high cutting capacity and high surface quality at the same time; in addition, the further ball milling and formula preparation of polishing fluid are completed at the same time during the ball milling process, which not only speeds up the ball milling efficiency, shortens the production cycle, but also is more environmentally friendly.