32results about How to "Crystalline" patented technology

The invention relates to a method for preparing a TiO2 nanocryatal / nanotube composite photocatalyst, which comprises: (1) preparing titanium dioxide nantotubes by using a hydro-thermalsynthesis method; and (2) dissolving a titanium alkoxide in absolute alcohol, adding the titanium dioxide nantotubes to obtain a homogeneous hybrid solution, placing the hybrid solution in the upper part of a container, adding deionized water in the bottom part of the container, closing the container, heating the closed container to 80 to 150 DEG C, keeping the temperature, pouring out upper powder, and washing and drying the upper powder to obtain the composite photocatalyst. The method of the invention is simple, low in cost, free from post treatment such as high-temperature calcining and suitable for industrial production; and the prepared TiO2 nanocrystal coated titanium dioxide nanotubes have high crystallinity, retain a tubular structure and have high adsorptivity.

The invention discloses a high-efficiency biogas slurry organic suspension liquid fertilizer and a preparation method thereof. The high-efficiency biogas slurry organic suspension liquid fertilizer comprises, by weight, 21.0-42.0 parts of a biogas slurry, 6.0-9.0 parts of organic matters, 4.0-25.0 parts of a nitrogen fertilizer, 9.0-20.0 parts of a potassium fertilizer, 0.5-1.0 part of a boron fertilizer, 0.5-0.8 part of EDTA-Zn, 0.4-0.6 part of EDTA-Mn, 0.1-2.0 parts of a wetting dispersant, 0.1-2.0 parts of a thickener, 0.1-2.0 parts of an antifreeze agent and 0.1-1.0 part of a root promoter. The high-efficiency biogas slurry organic suspension liquid fertilizer is an organic-inorganic suspension liquid fertilizer, and the high-efficiency biogas slurry fertilizer is prepared by fermenting a substrate biogas slurry, so the problem of the pollution of discharge of the biogas slurry to the environment is effectively solved, the biogas slurry is transformed into valuables from wastes andis fully used, and the production cost of the liquid fertilizer is reduced. The fermented biogas slurry is used to prepare the liquid fertilizer, so the liquid fertilizer can be more rapidly dissolved in water than general products, and has the advantages of high total nutrient content, stable physical and chemical properties, and no crystallization, precipitation and stratification phenomena under high temperature, low temperature and normal temperature conditions.

The new process of producing liquid methyl tetrahydro phthalic anhydride uses solid methyl tetrahydro phthalic anhydride or coarse methyl tetrahydro phthalic anhydride produced with C5 mixture and maleic anhydride as material and through reaction in the presence of acid isomeric catalyst at 130-060 deg.c for 1-5 hr, further reaction after adding weak alkaline compound in the same equivalent as the acid catalyst for 15-30 min, and decompression distillation to obtain liquid methyl tetrahydro phthalic anhydride. Thus produced liquid methyl tetrahydro phthalic anhydride has high indexes of solidifying point, stability, viscosity, chroma, etc.

The invention relates to a composite film for guiding bone tissue regeneration and a preparation method of the composite film. The composite film is a double-layer film, wherein a bottom-layer film is an L-lactide and caprolactone copolymer (L-PLCA) cast film with a compact structure, and the molar ratio of monomer components is (50:50) to (95:05); a surface layer is an L-PLCA and hydroxyapatite (HA) or tricalcium phosphate (beta-TCP) compound electrospinning film with a micropore structure, wherein the mass ratio of HA or beta-TCP in the electrospinning film is 10-50wt%, and the particle size of the electrospinning film can be nano-grade or micro-grade. The double-layer composite film is relatively good in mechanical performance and bone-like apatite deposition induction capacity, favorable in flexibility and capable of realizing performance regulation through regulating the molar ratio of L-PLCA, the content of the component HA or beta-TCP and the microstructure of the electrospinning film so as to be a novel degradable double-layer composite film capable of guiding bone tissue regeneration.

The invention provides a high phosphorus high calcium liquid compound fertilizer, including the following raw materials by weight: 0.2-1.2 parts of disodium octoborate tetrahydrate, 0.05-2 parts of EDTA (ethylene diamine tetraacetic acid)-Mn, 0.05-1.8 parts of EDTA-Zn, 10-50 parts of calcium fertilizer, 0.5-6 parts of magnesium fertilizer, 20-75 parts of phosphoric acid, 1-9 parts of urea phosphate, 2-13 parts of ammonium polyphosphate, 3-15 parts of potassium fertilizer, 0.5-4 parts of a cosolvent, 0.5-4.5 parts of a stabilizer and 8-40 parts of water. The invention also provides a preparation method and a use the method of the high phosphorus high calcium liquid compound fertilizer. The high phosphorus high calcium liquid compound fertilizer enables phosphate radicals and calcium ions to stably coexist in the liquid phase to avoid production of calcium phosphate and other insoluble precipitates, effectively improves the utilization rate of phosphorus and calcium liquid fertilizers, is good in fluidity, high-enriched in nutrients, and suitable for automatic fertilizing operation of large area, can significantly improve the fertilizing efficiency, and has the advantages of being time saving, labor saving, fertilizer saving, fast in fertilizer efficiency and the like.

A resin-covered metal sheet excellent in durability (resistance to moist heat) which is obtained by laminating a metal sheet with a laminated sheet consisting of at least two unstretched layers (layers A and B) made mainly of a polyester resin via an adhesive with the layer B side employed as the adhesive surface, wherein the laminated sheet has a total thickness of 65 to 300mum and a pigment for coloring and hiding is incorporated mainly into the layer A, with the layers A and B having thicknesses of 50 to 250mum and 15 to 80mum respectively and with the amount of the pigment component contained in the layer B being limited to at most 10 parts by weight per 100 parts by weight of the resin component. Further, resin-covered metal sheets having good embossed appearance can be provided by the use of a current embossing machine used in embossing flexible PVC sheets.

The invention relates to a stacked organic light emitting device and a preparation method thereof. The stacked organic light emitting device comprises an anode, a first light emitting unit, a charge generating layer, a second light emitting unit and a cathode which are sequentially stacked. The charge generating layer is formed by doping an electron transport material and a hole transport material in a metal oxide. The electron transport material is 4,7-diphenyl-1,10-phenanthroline, 1,2,4-triazole derivative or 2-(4'-tert-butytphenyl)-5-(4'-biphenylyl)-1,3,4-oxadiazole. The hole transport material is 2,3,5,6-tetrafluoro-7,7,8,8,-tetracyano-quinodimethane, 4,4,4-tri(naphthyl-1-phenyl-ammonium)triphenylamine or dinaphthyl-N,N'-diphenyl-4,4'-benzidine. The metal oxide is tantalum pentoxide, niobium pentoxide or vanadium dioxide. The light emitting efficiency of the stacked organic light emitting device is high.

The invention discloses an electron acceptor material for an organic solar cell as well as a preparation method and application of the electron acceptor material. The method uses benzotrithiophene asa core, different quantity of thiophene unit bridges are introduced, a strong electron withdrawing group is introduced at the tail end to realize adjustment and control of photoelectric properties, and therefore the high-performance electronic acceptor material for the organic solar cell is built. The electron acceptor material for the organic solar cell disclosed by the invention shows excellentexciton separation ability, has good thermal stability, electrical stability and solution processing performance, is simple to synthesize and easy to purify, has low costs, and is potential replacement of a fullerene electron acceptor, and suitable for being used as a non-fullerene electron acceptor material to be widely used to prepare high-performance devices for the organic solar cell.

The invention discloses a liquid water-soluble fertilizer containing humic acid and a preparation method of the liquid water-soluble fertilizer. The liquid water-soluble fertilizer is prepared from the following materials in parts by weight: 8-13 parts of a urea ammonium nitrate solution, 8-14 parts of ammonium polyphosphate, 14-20 parts of potassium tripolyphosphate, 7-11 parts of mineral sourcepotassium fulvic acid, 1-3 parts of a non-ionic surfactant, 0.05-0.2 part of endophyte source extract cyclodipeptides, 0.1-0.3 part of an organic silicon defoamer, 0.2-0.6 part of IDHA iron, 0.1-0.5 part of glycerol, 0.1-0.5 part of xanthan gum and 36.9-61.45 parts of water. The preparation method comprises the following steps that the xanthan gum is added into the 6 parts of water in a reaction kettle, uniform stirring is conducted, still standing is conducted for 24 h, then the residual water, the potassium fulvic acid, the surfactant and the defoamer are added, heating is conducted to 50 DEG C, and stirring is conducted for 5 min; the urea ammonium nitrate solution, the ammonium polyphosphate, the potassium tripolyphosphate, the IDHA iron and the like are added into a solution, the cyclodipeptides and the glycerol are added after complete dissolving, heating is conducted to 50 DEG C, stirring is conducted for 5 min, cooling is conducted to the room temperature, and thus packaging can be conducted. The liquid water-soluble fertilizer is simple in process, a product meets the requirements of current drip irrigation equipment, the use effect is good, and the liquid water-soluble fertilizer can be widely popularized.

Provided is an organic electroluminescent device, comprising an anode, a hole injection layer, a hole transport layer, a luminous layer, an electron transfer layer, an electron injection layer, and a cathode stacked in sequence. The cathode layer is formed by a metallic oxide doping layer, an organic electron transport material doping layer, and a metal sulfide doping layer. The metallic oxide doping layer contains metallic oxides and metal sulfides doped in the metallic oxides. The metal sulfides are selected from at least one of zinc sulfide, cadmium sulfide, magnesium sulfide, and copper sulphide. The organic electron transport material doping layer contains an organic electron transport material and metal doped in the organic electron transport material. The metal sulfide doping layer contains metal sulfides and titanium dioxide doped in the metal sulfides. The metal sulfides are selected from at least one of zinc sulfide, cadmium sulfide, magnesium sulfide, and copper sulphide. The luminescence efficiency of the organic electroluminescent device is high. The invention also provides a method for preparing the organic electroluminescent device.

Provided is an organic electroluminescent device which comprises an anode, a hole injection layer, a first hole transmission layer, a first luminescent layer, a first electron transmission layer, a charge generation layer, a second hole transmission layer, a second luminescent layer, a second electron transmission layer, an electron injection layer and a cathode which are laminated in turn. The charge generation layer comprises an n-type layer, an intermediate layer and a p-type layer. Material of the n-type layer is bipolar metal oxide doped with caesium salt. Material of the intermediate layer is a phthalocyanine compound doped with caesium salt. Material of the p-type layer is hole transmission material doped with the phthalocyanine compound. The aforementioned organic electroluminescent device is relatively high in luminescence efficiency. The invention also provides a preparation method for the organic electroluminescent device.

The invention belongs to the field of fertilizers, and relates to a liquid calcium fertilizeras well as a preparation method and application thereof. The liquid calcium fertilizer is prepared from the following components by weight: 35-59 parts of calcium element, 1-2 parts of a wetting agent, 2-4 parts of a dispersant, 0.5-1 part of a surfactant, 1-3 parts of an emulsifier, 2-3 parts of an antifreezing agent, 0.5-4 parts of a thickener, 0.1-0.2 part of an antifoaming agent, and 27.3-51.8 parts of water. Calcium is suspended together in the form of micro-nano particles through an ultra-micro nano technology and a water-phase micro-suspension polymerization technology, the content of calcium in the obtained ultra-micro nano suspension liquid calcium fertilizer is high and can reach 280-612 g / L, the average particle size of the calcium is about 1.5 microns, the prepared ultra-micro nano suspension liquid calcium fertilizer can improve the dispersing performance of the ultra-micro nano suspension liquid calcium fertilizer in an aqueous solution system, and the calcium nutrition can be well and quickly supplemented for crops.

The invention provides an organic water-retaining suspension liquid compound fertilizer and a preparation method thereof. The organic water-retaining suspension liquid compound fertilizer is preparedby effectively compounding organic matters and microorganisms. When being applied to stony desertification areas, the fertilizer can effectively promote the development of soil microorganisms, improvethe activity of the soil microorganisms and improve the microbial environment, and can effectively retain water and fertilizer, improve the soil root system environment of crops planted in stony desertification areas and improve the turnover utilization efficiency of soil organic matters, thereby improving the survival rate, yield and quality of the crops. The suspension liquid compound fertilizer disclosed by the invention is complete in nutrients, reasonable in proportion, good in flowability and suitable for automatic fertilization operation with a relatively large area, and can obviouslyimprove the fertilization efficiency and increase the yield and income of crops.

The invention relates to a mesoporous material, and particularly relates to a multi-element metal oxide mesoporous material. The material is prepared by using mesoporous foam silica as a hard template, a preparation method comprises the following steps: 1) adding the mesoporous foam silica to chloroform for ultrasonic dispersion, adding FeCl3.6H2O, AlCl3 and MgCl2. 6H2O, adding ammonia solution to adjust the pH value of 8-10, stirring, standing, filtering, washing with water and drying to prepare nano powder; 2) performing high temperature calcination on the dried nano powder to prepare a nano ferrite wave-absorbing material. The multi-element metal oxide mesoporous material has the advantages that: 1) the nano ferrite is a multi-element metal oxide material, has ferroelectric, ferromagnetic, and dielectric semiconductor properties, so that the wave-absorbing properties of the material can be improved; and 2) by use of the mesoporous silica as the hard template, and by means of the ultra-large hole size and a three-dimensional connected special structure of the mesoporous silica foam material, the ordered mesoporous nano ferrite is obtained, and the nano ferrite has both nano material properties and the three-dimensional pore structure.

The invention discloses a single-component waterborne polyurethane waterproof coating and a preparation method thereof. The coating is prepared from the following raw materials: polyether glycol, polyether triol, polytetrahydrofuran ether glycol, fluorine-containing hydroxyl-terminated polysiloxane, diisocyanate, aromatic diamine containing a polytetrahydrofuran ether chain segment, a water-based chain extender, a neutralizer, a solvent, a catalyst, deionized water, a water-based dispersant, a powder filler, water-based color paste, a thickener, an anticorrosive bactericide and a defoaming agent. And an antifreezing agent. The prepared single-component waterborne polyurethane waterproof coating has excellent comprehensive performance, the film-forming tensile strength ranges from 2.4 MPa to 6.9 MPa, the elongation at break ranges from 534.2% to 752.1%, and the water resistance can meet the requirements of solvent type polyurethane waterproof coatings.

The invention discloses a suspension liquid set fertilizer for reducing yellowing of honey pomelo leaves and a preparation and application method thereof. The suspension liquid set fertilizer is composed of a suspension liquid fertilizer a and a suspension liquid fertilizer b; according to the suspension liquid fertilizer a and the suspension liquid fertilizer b, a phosphate fertilizer and calciumand magnesium fertilizers are separately prepared so that the phosphate fertilizer and other raw materials can be prevented from a drastic exothermic action, and the best use effect can be achieved.The set fertilizer can not only meet the nutrient requirements of fruit trees in different growth stages, but also obviously alleviate the yellowing symptom of the fruit trees; finally, the yield of the fruit trees is increased, the quality of the fruit trees is improved, and therefore the economic benefits are increased.

An organic electroluminescent device includes a glass substrate, an anode, a scattering layer, a hole injection layer, a hole transport layer, a luminous layer, an electron transport layer, an electron injection layer and a cathode which are stacked in sequence. The material of the scattering layer includes lithium compounds, copper compounds and hole transport material, wherein the lithium compounds are selected from at least one of the lithium fluoride, lithium carbonate, lithium bromide and lithium oxide, and the copper compounds are selected from at least one of cuprous iodide, cuprous oxide, copper phthalocyanine and copper oxide. The light extraction efficiency of the abovementioned organic electroluminescent device is relatively high. The invention also provides a preparation method of the organic electroluminescent device.

The invention relates to a method for preparation of a multi-element mesoporous metal oxide by a hard template. The method uses mesoporous foam silica as the hard template, and chloroform as a solvent, FeCl3.6H2O, AlCl3 and MgCl2. 6H2O with a stoichiometric ratio of n (MgCl2.6H2O): n (AlCl3): n (FeCl3. 6H2O) of 1:x:10-x,(0<= x<= 1) are added, and the multi-element mesoporous metal oxide is obtained by ultrasonic dispersion, stirring, standing, filtering, water washing, drying and calcination at high temperature. The method has the advantages that: 1) the multi-element metal oxide mesoporous material has ferroelectric, ferromagnetic and dielectric semiconductor properties, so that the wave-absorbing properties of the material can be improved; and 2) by use of the mesoporous foam silica as the hard template, and by means of the ultra-large hole size and a three-dimensional connected special structure of the mesoporous silica foam material, the ordered multi-element mesoporous metal oxide is obtained, and 3) the multi-element mesoporous metal oxide obtained by the hard template method has crystalline hole walls, and the crystallinity is improved by increasing of the heat treatment temperature.

The invention relates to a wear-resistant coating and an automobile polyurethane wear-resistant adhesive tape based on the same. The wear-resistant coating provided by the invention comprises, by weight, 10-20 parts of thermoplastic polyester elastomer with shore D hardness of 40-60 HD, 10-20 parts of short-oil alkyd resin with the fatty acid content of 30-40%, 1-5 parts of PBT resin with the meltindex of 30-45 g / 10 min under the condition of 250 DEG C * 2.16 k, 15-35 parts of ceramic powder comprising first ceramic powder with the particle size of 10-100 nm and second ceramic powder with theparticle size of 500-1000 nm, metal nano-powder with the particle size of 20-50 nm, 5-15 parts of an auxiliary agent and 40-60 parts of an organic solvent.

The invention discloses a preparation method of crystalline polyester, which takes isobutylene oxide and cyclic acid anhydride as raw materials, adopts double metal cyanide complex as catalyst, and conducts polymerization reaction and post-treatment to obtain a polymer product; and then the polymer product is placed in a Crystallization is induced in the poor solvent of the polymer product, and the crystalline polyester is obtained after drying. In the preparation method, a crystalline polyester is prepared by selecting a raw material monomer with a specific structure and a suitable catalytic system, and combining with an induced crystallization process after polymerization.

The invention discloses a chromium-containing flue gas denitration catalyst and a preparation method thereof. The chromium-containing flue gas denitration catalyst is composed of catalyst powder, a cocatalyst and a catalyst carrier; the flue gas denitration catalyst is prepared through the following steps: the first step, preparing the catalyst Carrier; the second step is to mix the catalyst powder, the cocatalyst and the catalyst carrier according to the mass ratio of 6-8:0.3:100, and then add them to the mixer for mixing and extruding to obtain the catalyst sludge; the third step is to mix the first The catalyst sludge obtained in the second step is put into a molding machine and extruded into a honeycomb body through a die. After extrusion, it is dried at 60-80°C for 10 hours, 100-120°C for 2 hours, 200-250°C for 2 hours, and 600°C. Calcined at ‑700°C for 1 hour to prepare a chromium-containing flue gas denitrification catalyst.

A resin-covered metal sheet excellent in durability (resistance to moist heat) which is obtained by laminating a metal sheet with a laminated sheet consisting of at least two unstretched layers (layers A and B) made mainly of a polyester resin via an adhesive with the layer B side employed as the adhesive surface, wherein the laminated sheet has a total thickness of 65 to 300mum and a pigment for coloring and hiding is incorporated mainly into the layer A, with the layers A and B having thicknesses of 50 to 250mum and 15 to 80mum respectively and with the amount of the pigment component contained in the layer B being limited to at most 10 parts by weight per 100 parts by weight of the resin component. Further, resin-covered metal sheets having good embossed appearance can be provided by the use of a current embossing machine used in embossing flexible PVC sheets.

The invention is a new material for surgical suturing, which is a new material processed by copolymerization or blending of biodegradable polylactic acid aliphatic polyester and polyamino acid materials. The selected degradable polymer is completely absorbed by the tissue within 60-180 days. The suture material maintains the highest level of tensile strength and nodular firmness both in vivo and in vitro, and at the same time, it has a stable and predictable absorption rate in conjunction with wound healing. It is simply hydrolyzed in the body and is not affected by enzymes and body fluids. It has good biocompatibility. The tissue response is low, which is very suitable for maintaining the complete anastomosis of sutures for a long time after surgery.

The invention discloses an electron acceptor material for an organic solar cell and its preparation method and application. Using benzotrithiophene core, introducing different numbers of thiophene unit bridges, and then introducing strong electron-withdrawing groups at the end to realize its photoelectric properties regulation to construct high-performance electron acceptor materials for organic solar cells. The organic solar cell electron acceptor material of the present invention exhibits excellent exciton separation ability, has good thermal stability, electrical stability and solution processing performance, and is easy to synthesize, easy to purify, and low in cost. It is a fullerene electron acceptor material. potential substitutes. It is suitable as a non-fullerene electron acceptor material and widely used in the preparation of high-performance organic solar cell devices.

The invention discloses a perfluoroalkyl polyacrylate waterproofing agent, a preparation method and an application. The active ingredient of the waterproofing agent is sulfur-containing long heterochain perfluoroalkyl acrylate copolymer, and sulfur-containing long heterochain perfluoroalkyl acrylate, butyl acrylate, methyl methacrylate and hydroxyethyl methacrylate Composition of mixed monomers, under the emulsification of non-ionic surfactants and anionic surfactants, it is obtained by initiating emulsion polymerization with an initiator. Applying this finishing agent to cotton fabric finishing can provide very excellent waterproof function. Due to the crystallinity of sulfur-containing long heterochain perfluoroalkyl groups, there is no surface reconstruction phenomenon when the acrylate copolymer contacts liquid, and the waterproof function is excellent. Moreover, long heterochain perfluoroalkyl groups contain carbon-sulfur heterobonds, are easy to degrade, and have no cumulative toxicity, so they are not banned fluorine-containing chemicals. At the same time, the waterproofing agent provided by the invention is prepared by traditional emulsion copolymerization, has mild reaction conditions, low equipment requirements, simple process, easy control, and is suitable for industrial production.

The invention relates to a mesoporous material, and particularly relates to a multi-element metal oxide mesoporous material. The material is prepared by using mesoporous foam silica as a hard template, a preparation method comprises the following steps: 1) adding the mesoporous foam silica to chloroform for ultrasonic dispersion, adding FeCl3.6H2O, AlCl3 and MgCl2. 6H2O, adding ammonia solution to adjust the pH value of 8-10, stirring, standing, filtering, washing with water and drying to prepare nano powder; 2) performing high temperature calcination on the dried nano powder to prepare a nano ferrite wave-absorbing material. The multi-element metal oxide mesoporous material has the advantages that: 1) the nano ferrite is a multi-element metal oxide material, has ferroelectric, ferromagnetic, and dielectric semiconductor properties, so that the wave-absorbing properties of the material can be improved; and 2) by use of the mesoporous silica as the hard template, and by means of the ultra-large hole size and a three-dimensional connected special structure of the mesoporous silica foam material, the ordered mesoporous nano ferrite is obtained, and the nano ferrite has both nano material properties and the three-dimensional pore structure.

The invention discloses an organic solar cell acceptor material and a preparation method thereof, and the method comprises the following steps: step 1, reacting 9-(4-bromophenyl)-3,6-dibromocarbazolewith bis(pinacolato)diboron to generate an intermediate 1; step 2, carrying out Suzuki coupling on the intermediate 1 and 5-bromothieno[2,3-B] pyridine to generate an intermediate 2; step 3, reactingthe intermediate 2 with N-bromo-succinimide (NBS) to generate an intermediate 3, and further reacting the intermediate 3 with bis(pinacolato)diboron to generate an intermediate 4; step 4, performing Suzuki coupling on the intermediate 4 and substituted 5-bromo-2-furan formaldehyde to generate an intermediate 5; and step 5, carrying out a Knoevenagel condensation reaction on the intermediate 5 anda terminal group to generate a final product. The material not only can be used as an electron acceptor in an organic solar cell, but also can be used as an additive material for regulating and controlling a donor / acceptor interface of a ternary blending organic solar cell.

The invention discloses a sulfur-containing long heterochain perfluoroalkyl enoate and a preparation method thereof. Using nonafluorobutyltetrafluorosulfur halide as the end-capping agent, after tetrafluoroethylene undergoes telomerization reaction, the obtained 5-thiaperfluorononyl-1-halogen and ethylene gas are reacted by one-electron addition to obtain 1H,1H,2H,2H‑7‑Thiaperfluoroundecyl‑1‑halogen; esterification with silver enoate to give 1H,1H,2H,2H‑thiaperfluoroundecyl acrylate. The sulfur-containing long heterochain perfluoroalkyl enoate prepared by the invention contains carbon-carbon double bonds that are easy to free radical polymerization, and can be used for preparing fluorine-containing polymers and copolymers. Due to the crystallinity of the long heterochain perfluoroalkyl group, the prepared fluoropolymer has no surface reconstruction phenomenon when in contact with liquid, and can provide excellent liquid repellency. At the same time, the perfluoroalkyl long heterochain contains carbon-sulfur heterobonds, is easy to degrade, has no cumulative toxicity, and is not within the scope of banned fluorine-containing chemicals.

The invention discloses a lithium cobalt oxide composite film electrode and a preparation method thereof. The aluminum-doped modified lithium cobalt oxide composite film electrode is prepared by simultaneously sputtering a lithium cobalt oxide target and an aluminum target through a multi-target co-sputtering technique, by adjusting sputtering parameters and target compositions of the lithium cobalt oxide target and the aluminum target, the composition and structure of the composite film are regulated, and thus the high-performance lithium cobalt oxide composite film electrode is prepared. Thelithium cobalt oxide composite film electrode and the preparation method thereof have the beneficial effects that the preparation process is simple and easy to control, metal aluminum forms a conductive network in a film, thus, the conductivity of the electrode is significantly improved, part of aluminum enters lithium cobalt oxide lattices during the co-sputtering process, a LiAlyCo1-yO2 solid solution is formed, on the one hand, transportation of lithium ions can be promoted through the solid solution, and on the other hand, the electrode cycle stability is improved through the solid solution.