246results about "Borates" patented technology

The invention discloses a series of alkali metal borate compounds and alkali metal borate crystals as well as a preparation method and application thereof, and belongs to the technical field of photoelectric functional crystal materials. The chemical general formula of the series of compounds and crystals thereof is A3RE (B3O6) 2, wherein A is K, Rb, Cs or NH4; rE = Sc and Y, the molecular weight is 355.93-744.48, the series of crystals belong to a trigonal system, the space group is P321, the cell parameters a = b = 10.5237 (13)-135237 (13), and # imgabs0 # Z = 3. The series of alkali metal borate compounds are synthesized by adopting a solid-phase reaction method or a hydrothermal method, and the series of crystals grow by adopting a high-temperature melt method or a hydrothermal method or a solution method. The series of materials can be used for manufacturing second harmonic generators, upper and lower frequency converters, optical parametric oscillators, polarizing prisms and the like.

A layered oxide positive electrode material and a preparation method therefor, a positive electrode composition, a sodium-ion secondary battery and the use. The layered oxide positive electrode material has the following general formula: NaaNibCucMndTieMfOg, wherein M is a doping element, a=0.75-0.95, b=0.33-0.45, c=0.03-0.15, d=0.20-0.45, e=0.05-0.20, f=0-0.1, and g=1.80-2.20. In an XRD pattern of the layered oxide positive electrode material, the peak intensity ratio I(101) / I(003)=0.02-0.15, the peak intensity ratio I(101) / I(012)=0.35-0.47, and the peak intensity ratio I(101) / I(006)=0.08-0.57.

The present invention relates to the field of battery materials, and provides a lithium manganate cathode material coated with lithium triborate and a preparation method thereof. The cathode material is a porous lithium manganate / lithium triborate composite electrode material, which includes porous lithium manganate with a highly connected directional columnar pore structure and a lithium triborate coating covering the pore surface, with a mass ratio of (86.0~92.0):(8.0~14.0), a coating thickness of 600~800 nm, a pore diameter of 45~95 μm, and a porosity of 65~78%. The preparation method includes: preparing a precursor colloidal solution by the sol-gel method, obtaining porous lithium manganate through low-temperature freezing molding and freeze-drying, and forming a cathode substrate through pre-oxidation and high-temperature sintering; subsequently, using vacuum-assisted impregnation, ultrasound, and nitrogen pressure to promote the penetration of the lithium triborate precursor solution, and forming a uniform coating layer through gradient drying and annealing treatment. The present invention significantly improves the crystal structure stability of the cathode material, inhibits manganese dissolution, improves the cycle life and rate performance, and has wide application value.

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a boric acid modified ternary layered oxide positive electrode material and a preparation method and application thereof. The chemical general formula of the boric acid modified ternary layered oxide positive electrode material is Na2 / 3Ni1 / 3Co1 / 3Mn1 / 3BxO, and x is more than 0 and less than or equal to 0.09; the boric acid modified ternary layered oxide positive electrode material is subjected to boric acid modification treatment and comprises interstitial doping of boron elements and a surface BO coating layer, the interstitial doped boron elements are located at tetrahedral sites of a transition metal layer, and the thickness of the BO coating layer is 3 nm to 10 nm. The boric acid modified ternary layered oxide positive electrode material prepared by the invention shows high specific capacity, good cycling stability and excellent rate capability in the sodium ion battery, and meanwhile, the preparation method disclosed by the invention has the advantages of simple preparation process, high cost effectiveness and the like, and has a wide application prospect.

The invention discloses an oxide-coated ion-doped sodium ferric sulfate positive electrode material as well as a preparation method and application thereof. The positive electrode material is formed by compounding a sodium ferric sulfate bulk phase material doped with various valence metal cations and anions and coated with carbon similar to a positive temperature coefficient thermosensitive metal oxide. Wherein the metal cations with various valence states are doped on Na or Na / Fe ion sites of the sodium ferric sulfate, the doped anions occupy part of three-dimensional S-O tetrahedron positions, the inorganic carbon in the carbon compound is uniformly distributed in the sodium ferric sulfate bulk phase material, and the organic carbon is uniformly distributed outside the sodium ferric sulfate bulk phase material. The positive electrode plate assembled battery prepared from the positive electrode material has the advantages of high reversible charge-discharge capacity, excellent cycle performance and rate capability and high electron and ion migration rate in a low-temperature environment. The method is low in raw material cost, simple in synthesis method, short in production period and suitable for large-scale continuous production.

The invention provides a polycrystalline ultrahigh-nickel ternary positive electrode material and a preparation method thereof, a lithium ion battery and electric equipment, and relates to the field of lithium ion batteries. The polycrystalline ultrahigh-nickel ternary positive electrode material comprises an inner core, a first coating layer and a second coating layer, the chemical general formula of the inner core is LiNiXMyM 'ZO2; m comprises at least two of Co, Mn and Al, and M'comprises at least two of Zr, Sr, Y, Sb, Al, W, Ta, Mg, Ca, Ti, Mo and Nb; the first coating layer comprises a lithium-M ''multi-element oxidation compound, and M'' comprises at least two of Sb, Al, Co, Ti, W and P; the second cladding layer includes a lithium-M ''oxidation complex, and M'' includes one or more of B, Al, W, and Ti. The polycrystalline ultrahigh-nickel ternary positive electrode material has excellent high-temperature storage performance and capacity.

A positive electrode active material includes a lithium nickel complex oxide having a hexagonal crystalline layered structure and containing secondary particles in which a plurality of primary particles are aggregated. The lithium nickel complex oxide contains Li, Ni, B, and element M at a ratio by mole of Li:Ni:B:M=a:b:c:d (where 0.95≤a≤1.10, 0.50≤b<1.00, 0.00<c≤0.03, 0.00≤d≤0.47, b+c+d=1, and element M is at least one element selected from Mn, Co, V, Mg, Mo, Ca, Cr, Zr, Ta, Ti, Nb, Na, W, Fe, Zn, Si, Sn, Cu, P, and Al). In a titration curve obtained from neutralization titration of the positive electrode active material, a volume ratio of an HCl dropping amount in a range having a pH of higher than 11.0 to an HCl dropping amount in a range having a pH of 8.0 or higher and 11.0 or lower is 2.0 or less.

A negative electrode active material for a non-aqueous electrolyte secondary battery according to one example of an embodiment comprises composite particles (30) that include a lithium aluminate phase (31) and a silicon phase (32) dispersed in the lithium aluminate phase (31). The lithium aluminate phase (31) contains boron, and the ratio (MAI / MB) of the aluminum percentage content (MAI) and the boron percentage content (NIB) with respect to the total amount of the elements other than oxygen constituting the lithium aluminate phase (31) and the silicon phase (32) is 1.0-30.0, inclusive.

The invention provides a positive electrode material, a method for preparing the positive electrode material, a positive electrode plate, a battery and an electric device. The positive electrode material comprises an inner core and a shell wrapping the inner core, each of the inner core and the shell comprises primary particles, most of the primary particles in the inner core are distributed in the radial direction of the inner core, and the distribution of most of the primary particles in the shell is different from the radial distribution of the inner core. The particle strength of the positive electrode material is improved, so that the cycle life, the high-temperature storage performance and the energy density of the battery are improved.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The porous particulate nanocomposite is characterized in that, based on the total number of atoms in the particulate nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein an average particle size of the mixed powder is 0.10 µm or more and 8.50 µm or less, the mixed powder contains B, and a B content contained in the entire mixed powder is 0.005 mass% or more and less than 0.040 mass%, a proportion of tri-coordinated boron in the B is 5 mass% or more and less than 70 mass%, and a ratio of a circumferential length to a thickness of primary particles containing the MgO is 6.0 or more.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of zinc borate modified graphene, which comprises the following steps: ultrasonically dispersing graphene in water to obtain 0.5-1g / L graphene dispersion liquid; adding a dispersing agent, a 0.08-0.12 mol / L borax aqueous solution and ethanol into the graphene dispersion liquid, uniformly mixing, and then dropwise adding a 0.08-0.12 mol / L zinc sulfate aqueous solution under the stirring action; then carrying out a reaction through microwave heating at the temperature of 50-70 DEG C under the power of 100-300 W for 20-30 min; after the reaction is finished, filtering, washing and drying to obtain zinc borate modified graphene. According to the preparation method of the zinc borate modified graphene, provided by the invention, a uniform, complete and compact shell layer can be formed on the surface of the graphene through in-situ self-assembly, so that the surface of the graphene is textured, and the dispersion uniformity and dispersion stability of the graphene in an oil phase system are improved.

The invention belongs to the technical field of positive electrode materials, and provides a lithium-rich manganese-based positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: mixing a manganese-based metal ion solution, a precipitator solution and a complexing agent solution to obtain a manganese-based composite material precursor suspension, and drying to obtain a precursor; mixing the precursor with a lithium source, and then sequentially mixing and reacting with a phosphate radical source, a borate radical source and a niobium source to obtain a phosphorus boron niobate coated precursor; and mixing the precursor with a lithium source, and sintering. The invention also discloses the lithium-rich manganese-based positive electrode material prepared by the method. The positive electrode of the lithium ion battery comprises the positive electrode material. The lithium-rich manganese-based positive electrode material disclosed by the invention has a gradient coating structure, and the structure enables the positive electrode material to be high in capacity, good in cycle performance and less in interface side reaction; according to the invention, an in-situ co-firing bonding process is adopted, and a liquid-phase impregnation-segmented sintering integrated process is adopted, so that chemical bonding of a coating layer and a matrix is realized, interface falling is avoided, and the structural stability is enhanced.

This invention discloses a core-shell structured lithium-rich manganese-based cathode material with the general formula Li. 1+a Mn x Co y Ni z O 2‑b‑d (XO c ) b X d It has a core-shell structure, with the core being a disordered polyanion-doped lithium-rich manganese-based material, Li. 1+a Mn x Co y Ni z O 2‑b (XO c ) b The outer shell is made of lithium-rich manganese-based material Li, which is doped with gradient non-metallic ions. 1+ a Mn x Co y Ni z O 2‑d X d This application also provides a method for preparing a core-shell structured lithium-rich manganese-based cathode material. The method employs a combination of rapid Joule heating and surface plasma cleaning to prepare the aforementioned core-shell structured lithium-rich manganese-based cathode material, achieving a bulk disordered structure design with polyanion doping and a core-shell structure with surface gradient non-metallic ion doping. Specifically, the bulk polyanions can immobilize transition metal elements to suppress their migration to the lithium layer, reducing harmful consumption of active sites and stabilizing the crystal structure. Furthermore, the strong bond energy between the surface non-metallic elements and the transition metal elements can suppress transition metal dissolution during cycling, reducing irreversible oxygen oxidation and inhibiting harmful phase transitions.

The invention provides a coated microcrystal lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. The positive electrode material is a lithium-rich manganese-based positive electrode material which is prepared from a lithium-rich manganese-based precursor and has primary particles formed in situ and secondary spheres with surface coatings. The positive electrode material has a unique core-shell structure, the core is a microcrystal lithium-rich material, the shell is a nanoscale solid electrolyte layer, and the shell layer coats primary particles and secondary spheres at the same time; the structure effectively inhibits the interface side reaction between the positive electrode material and the solid electrolyte, and stabilizes the interface structure; a continuous and short Li and charge transmission path is provided, the interface impedance in an all-solid-state battery is remarkably reduced, and the rate capability and the cycling stability of the material are improved.

The invention discloses a modified solid-state electrolyte and a preparation method and application thereof, and relates to the field of solid-state batteries, in 300 crystal face grain size distribution of the modified solid-state electrolyte, Kn90 = (Ln90-Ln10) / Ln50, and Kn90 is more than or equal to 0.5 and less than or equal to 1.7; wherein Ln10 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 10%, and Ln50 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 50%; ln90 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 90%. According to the invention, the modified solid electrolyte has excellent ionic conductivity, good air stability, interface stability to metal lithium and relatively high oxidation potential stability.

The present invention provides a vapor deposition method for preparing an amorphous lithium borosilicate or doped lithium borosilicate compound, the method comprising: providing a vapor source of each constituent element of the compound, wherein the vapor source comprises at least a lithium source, an oxygen source, a boron source, and a silicon source, and optionally a source of at least one dopant element; conveying streams of the lithium, the oxygen, the boron, and the silicon, and optionally the dopant element; and co-depositing the constituent elements from the vapor source on a substrate, wherein the constituent elements react on the substrate to form an amorphous compound; wherein the amorphous lithium borosilicate or doped lithium borosilicate compound has a lithium content in the range of 40 - 65 atomic %, based on the atomic percentage of the combination of lithium, boron, and silicon.

The invention provides a positive electrode active material, a preparation method thereof, a positive electrode plate containing the positive electrode active material, a full-tab battery cell and an electric device, and relates to the technical field of lithium ion batteries. The positive electrode active material is of a double-spherical particle structure with a glass-phase neck bridge at a contact neck part, each spherical particle comprises an active material body and a coating layer coating the active material body, and the active material body is lithium iron phosphate dispersed with Fe2P; the average thickness tsh of the coating shell layer is equal to 5 to 9 nm; the thickness tcheck of the glass phase neck bridge is 5-25nm, and the total content G of the glass phase in the positive electrode active material is 1.5-2.2 wt%; the volume average particle size of the positive electrode active material is 7-9 [mu] m. According to the positive electrode active material disclosed by the invention, through the cooperation of the coating shell layer, the embedded Fe2P nano second phase and the glass phase neck bridge, the comprehensive performance of a full-tab battery cell and an electric device can be effectively improved.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The particulate nanocomposite material is characterized in that, based on the total number of atoms in the nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

This chemical heat storage material contains a hydroxide and / or an oxide of an alkaline earth metal, wherein the total content of boron and fluorine as the content of the alkaline earth metal with respect to the hydroxide is 10-1,200 ppm (exclusive of 1,200). Said chemical heat storage material further contains an alkali metal compound, wherein the amount of the alkali metal compound is preferably 0.1-50 mol% with respect to the hydroxide and / or the oxide of the alkaline earth metal.

The invention discloses a positive electrode material and a preparation method and application thereof and belongs to the technical field of positive electrode materials. The positive electrode material disclosed by the invention comprises a positive electrode active substance, wherein the positive electrode active substance comprises xNa < 3.64-a > Fe < 2.64-a > Ma (PO4) < 1.64-b > (BO3) P2O7. YNa < 4-2c > Fe < 2 + c > (P2O7) 2; in the formula, Na < 3.64-a > Fe < 2.64-a > Ma (PO4) < 1.64-b > (BO3) P2O7 is an NFPP superlattice solid solution phase; m comprises one or more of La, Ce and Mo, x is more than or equal to 80 wt% and less than or equal to 100 wt%, y is more than or equal to 0 wt% and less than or equal to 20 wt%, and 0 lt; a is less than 0.1, 0lt; blt; 0 < = c < = 1, and x + y = 100 wt%. The capacity and the working voltage of the positive electrode material are remarkably improved.

The present invention relates to a rubidium fluoro-scandium borate compound, a rubidium fluoro-scandium borate nonlinear optical crystal, and a preparation method and application thereof. The rubidium fluoro-scandium borate compound has a chemical formula Rb2ScB3O6F2, does not contain a symmetry center and has a molecular weight of 382.33 g / mol. The rubidium fluoro-scandium borate nonlinear optical crystal belongs to the monoclinic crystal system, and belongs to the non-centrosymmetric space group P21, and the unit cell parameters are: a=4.0372(10) Å, b=11.800(3) Å, c=8.823(2) Å, α=γ=90°, β=98.327(11)°, Z=2. The present invention adopts a high-temperature vacuum packaging method or a solid-state synthesis method to prepare rubidium fluoro-scandium borate compounds. The present invention adopts a fluxing agent method to prepare a rubidium fluoro-scandium borate nonlinear optical crystal, which have the advantages of short absorption cutoff edge, large nonlinear optical effect, good thermal stability, and stable physical and chemical properties. The rubidium fluoro-scandium borate nonlinear optical crystal of the present invention can be used to fabricate nonlinear optical devices, which have important applications in fields such as optics, military, laser lithography, and communication, etc.

The invention provides a single-crystallized and coating-modified lithium-rich manganese-based material as well as a preparation method and application thereof, the preparation method comprises the following steps: carrying out ball-milling mixing on a cobalt-free carbonate precursor material, a lithium source and molten salt, and then carrying out primary calcination, washing and repair heat treatment to obtain a single-crystal cobalt-free positive electrode material; the method comprises the following steps: mixing a single-crystal cobalt-free positive electrode material with a boron source solution, carrying out first coating to obtain a mixture, adding a magnesium source solution into the mixture, carrying out second coating, carrying out solid-liquid separation after coating, washing, drying and carrying out secondary calcination to obtain a gradient coating layer on the surface of the single-crystal cobalt-free positive electrode material, and one side far away from the single-crystal cobalt-free positive electrode material is rich in magnesium. The cobalt-free lithium-rich manganese-based positive electrode material is modified through single crystallization and coating synergistically, so that the problems of structural distortion, poor cycling stability, capacity fading and the like of the lithium-rich manganese-based material are solved, and the electrochemical performance of the lithium-rich manganese-based material is improved synergistically.

The invention discloses a ternary material precursor, a ternary material and a preparation method, and belongs to the field of lithium ion battery positive electrode materials. The ternary material precursor is of a multi-layer composite structure and sequentially comprises a core layer, a first transition layer and a second transition layer from inside to outside, and all the layers are prepared by adopting the same ternary (nickel-cobalt-aluminum) system. Through reasonable design of the proportion and thickness of the ternary system of the core layer and the transition layer, the ternary material precursor gives consideration to the high-capacity characteristic of the high-nickel core and the stability of the shell, and the stable structure of the shell can effectively inhibit the structural change and interface side reaction of the high-nickel material in the charging and discharging process. The phenomena of particle cracking and shell layer falling are reduced, and the material shows excellent specific discharge capacity, good cycle performance and thermal stability when being used as a lithium ion battery positive electrode material.

The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein the mixed powder contains Al and B, an Al content contained in the entire mixed powder is 0.0007 mass% or more and 0.050 mass% or less, a B content contained in the entire mixed powder is 0.005 mass% or more and 0.040 mass% or less, the B contains tri-coordinated boron, an average particle size of the mixed powder is 0.08 µm or more and 9.0 µm or less, and a formula (1) below is satisfied. 0.06≤Al / BO3<5.00 In the formula (1), [Al] is an Al content (mass%) in the mixed powder, and [BO3] is a content (mass%) of the tri-coordinated boron in the mixed powder.

The embodiment of the invention provides a positive active material and a preparation method thereof, a positive plate, a battery, a battery pack and electric equipment. The positive electrode active material comprises a spherical or sphere-like central particle and a plurality of synapse structures protruding out of the surface of the central particle, and any two synapses form a groove structure on at least part of the surface of the central particle; the positive electrode active material comprises an element M, and the element M comprises one or more of B, Zr, Sr, Mo and W. The positive electrode active material provided by the embodiment of the invention can improve the ion conduction capability and the pole piece stability of the battery, thereby improving the rate capability and the capacity retention rate of the solid-state battery.

The invention discloses a rare earth modified silicone rubber anti-radiation adhesive and a preparation method thereof, and the rare earth modified silicone rubber anti-radiation adhesive is prepared by mixing dealcoholized single-component room temperature vulcanized silicone rubber and an anti-radiation rare earth compound according to a ratio of 92-98 wt%: 2-8 wt%, the anti-radiation rare earth compound is prepared by mixing a mixed rare earth compound, deionized water and a composite rare earth coupling agent according to the mass ratio of 10: 90: 0.08, and the mixed rare earth compound is prepared by reacting raw materials including gadolinium chloride, samarium chloride, europium chloride, boric acid and deionized water. The neutron relative attenuation rate of the adhesive can reach 71-85%, the gamma ray relative attenuation rate of the adhesive can reach 88-95%, only microcracks appear on the surface after radiation, and the adhesive is easy to construct, can be used for aerospace circuit boards, equipment circuit boards in nuclear energy facilities and parts needing anti-radiation protection and the like, and has good practicability and popularization value.

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a boron-modified O3-phase sodium ferro-nickel manganate layered oxide positive electrode material and a preparation method and application thereof. The chemical general formula of the boron-modified O3-phase sodium ferronickel manganate layered oxide positive electrode material is NaNi1 / 3Mn1 / 3Fe1 / 3BxO2, x is greater than 0 and less than or equal to 0.2, and the boron-modified O3-phase sodium ferronickel manganate layered oxide positive electrode material is prepared by taking Na2B4O7. 10H2O as a boron source and co-sintering the boron source, Ni1 / 3Mn1 / 3Fe1 / 3 (OH) 2 precursor and Na2CO3 at high temperature, so that a composite structure of boron element doping and a NaBO2 surface coating layer is formed. Through a strategy of combining element doping and compound surface modification, a series of problems faced by the sodium ion positive electrode material are effectively solved, the electrochemical performance of the material is remarkably improved, and particularly, the performance is excellent in the aspects of cycling stability and capacity retention rate.

The invention provides a comprehensive recovery method of lithium-aluminum-silicon-boron-magnesium glass, which comprises the following steps: (1) crushing waste lithium-aluminum-silicon-boron-magnesium glass, slurrying, heating and carrying out acid leaching treatment to obtain silicon slag and an acid leaching solution, and carrying out membrane separation and concentration treatment on the acid leaching solution to obtain a concentrated solution; performing solid-liquid separation to obtain a lithium-boron-containing fresh water solution and an aluminum-magnesium-containing concentrated water solution; (2) mixing the lithium-boron-containing fresh water solution with a phosphorus source to carry out lithium precipitation reaction, carrying out solid-liquid separation to obtain lithium precipitation mother liquor and lithium phosphate, mixing the lithium precipitation mother liquor with a magnesium source to carry out boron precipitation reaction, and carrying out solid-liquid separation to obtain magnesium borate and wastewater; and (3) carrying out concentration crystallization treatment on the concentrated aqueous solution containing aluminum and magnesium to obtain aluminum salt crystals and crystallization mother liquor, carrying out magnesium precipitation treatment on the crystallization mother liquor, and carrying out solid-liquid separation to obtain magnesium hydroxide. According to the method disclosed by the invention, efficient and comprehensive recovery of metal elements in the lithium aluminum silicon boron magnesium glass is realized.

The invention provides a preparation process of a ceramic zinc borate flame retardant, and relates to the technical field of preparation of zinc borate flame retardants. The preparation process of the ceramic zinc borate flame retardant comprises the following steps: step 1, mixing boric acid and water according to a mass ratio of 1: (1.6-1.9), heating a preparation device to 70 DEG C, adding fatty alcohol-polyoxyethylene ether, and stirring until the fatty alcohol-polyoxyethylene ether is completely dissolved; 2, mixing zinc oxide and boric acid according to the mass ratio of 1: (4-5), stirring for 6-7 hours at the constant temperature of 70-85 DEG C, and then filtering and drying to obtain a zinc borate flame retardant; and 3, mixing the zinc borate flame retardant and the sodium sulfonate modified silane according to a mass ratio of 4: (0.6-1.2), and mechanically grinding to obtain the ceramic zinc borate flame retardant. The zinc borate flame retardant is uniformly mixed during preparation, does not settle and is thorough in reaction.