27 results about "Phosphorene" patented technology

The invention discloses a method for growing phosphorene on a non-metal substrate, which is characterized in that a molecular beam epitaxy technology is adopted, indium phosphide is used as a precursor in a high vacuum environment, phosphorene is grown on an epitaxial growth silicon substrate, and the precise control on the phosphorene growth process is realized. The method comprises the following steps: depositing a gold layer on the surface of freshly stripped mica, and carrying out ion cleaning and annealing treatment to obtain a clean Au (111) surface; growing a silicon layer on the surface of the processed Au (111) by taking monocrystalline silicon as a silicon source under an ultrahigh vacuum condition; growing a phosphorus layer on the Au (111) substrate on which the silicon layer is deposited by taking indium phosphide crystals as a phosphorus source under an ultrahigh vacuum condition; and carrying out annealing treatment on the obtained sample, and analyzing and characterizing the sample through Auger electron spectroscopy and a scanning tunneling microscope. The method can effectively break through the limitation that phosphorene is difficult to prepare under the condition of a non-metal substrate in the existing preparation means, and is expected to promote the application of phosphorene in the field of electronic devices.

The invention relates to the technical field of lubricating oil, and particularly discloses conductive graphene lubricating grease and a preparation method thereof. The conductive graphene lubricating grease provided by the invention comprises the following components in parts by weight: 60-80 parts of base oil, 0.5-5 parts of graphene, 5-15 parts of a conductive additive, 5-10 parts of a thickening agent, 2-5 parts of an anti-wear reagent at extreme pressure, 1-3 parts of an antioxidant and 1-2 parts of a dispersing agent, the specific surface area of the graphene is 100-500m < 2 > / g; further, the conductive additive is selected from one or more of silver powder, copper powder, black phosphorene and carbon nanotubes; the invention also provides a preparation method of the conductive graphene lubricating grease. On one hand, the conductive graphene lubricating grease provided by the invention has excellent adhesiveness and stability, and can maintain a lubricating effect for a long time under a dynamic working condition; and on the other hand, good conductivity is achieved, the contact resistance between the pantograph and the carbon plate can be effectively reduced, and the conductivity is remarkably improved.

Provided is conducting network polymer-encapsulated phosphorus-based anode particulate or multiple particulates for a lithium or sodium ion battery, the particulate comprising: (A) a core comprising one or a plurality of phosphorus material particles or coating (e.g. on surfaces of graphitic material particles) having a diameter or thickness from 0.5 nm to 10 μm and is selected from red phosphorus, black phosphorus (including phosphorene), violet phosphorus, a metal phosphide, MPy, or a combination thereof, wherein M=Mn, V, Sn, Ni, Cu, Fe, Co, Zn, Ge, Se, Mo, Ga, In, or an alloy thereof, and y=1-4; and (B) an encapsulating shell that embraces or encapsulates the core, wherein the encapsulating shell comprises an electron- and / or ion-conducting network (cross-linked) polymer.

The application provides a high-concentration graphene / black phosphorene double-medium aqueous dispersion and a use and preparation method, and the preparation method specifically comprises the following steps: preparing a graphene aqueous dispersion, preparing a black phosphorene aqueous dispersion, and preparing a black phosphorene-doped graphene-based mixed solution; a two-dimensional carbon conductive coating is constructed through graphene self-adhesion, a graphene / black phosphorene layer with considerable conductivity, toughness and adhesion can be obtained, the graphene / black phosphorene layer can be applied to various non-conductive substrates on a printed circuit board, and the graphene / black phosphorene layer has the characteristics of high-temperature resistance, via hole efficiency and the like. The method has low cost and simple process, and can be suitable for large-scale industrial production.

The present invention discloses an electrochemical sensor for rapid and efficient detection of baicalin, belonging to the technical field of electrochemical sensors. The raw materials for preparing the electrochemical sensor for rapid and efficient detection of baicalin include: an electrode and a biochar-black phosphorene-silver nanoparticle composite material; the biochar-black phosphorene-silver nanoparticle composite material is covered on the electrode. The electrochemical sensor prepared by the present invention shows good detection sensitivity and electrocatalytic activity for baicalin. The electrochemical sensor prepared by the present invention has low cost, simple process and easy operation, and the electrochemical sensor has the advantages of rapid and efficient, strong selectivity, good stability and high sensitivity, and can realize quantitative analysis and rapid detection of baicalin.

The invention discloses a medium-entropy alloy phosphide / black phosphorene electrocatalyst as well as a preparation method and application thereof, and belongs to the technical field of hydrogen evolution electrocatalysts. The catalyst is prepared by the following steps: carrying out acid pickling treatment on three foam metals (foam nickel, foam cobalt and foam iron), respectively taking black phosphorus crystals as an anode and a cathode, placing the foam metals and the black phosphorus crystals in an electrolytic bath containing propylene carbonate and tetrabutylammonium tetrafluoroborate, and applying 12-20V voltage to realize black phosphorus stripping and metal ion in-situ loading, and carrying out a solvothermal reaction at 160-180 DEG C for 3-4 hours to form a heterostructure. The catalyst is a heterostructure of black phosphorus nanosheet loaded medium entropy alloy phosphide, can efficiently separate hydrogen in alkaline and chloride ion-containing electrolyte, solves the problems of complex process, high cost, poor stability and the like of the existing catalyst, and is simple in process and excellent in performance.

This invention relates to the field of solid-state lithium battery technology, and particularly to a phosphorus-modified acrylic-based solid electrolyte membrane and its preparation method. The phosphorus-based solid electrolyte raw materials include: phosphorus, a polymer matrix, a lithium salt, an ionic liquid, and a thermal initiator; the mass ratios of phosphorus, lithium salt, ionic liquid, and thermal initiator are 0.1-0.5%, 30%, 20%, and 0.3-0.5% of the acrylic-based solid electrolyte, respectively; the polymer matrix includes fluorinated acrylate compounds; the lithium salt is lithium bis(trifluoromethanesulfonyl)imide; the ionic liquid is 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide; and the thermal initiator is an azo compound. This invention provides a phosphorus-modified acrylic-based solid electrolyte membrane and its preparation method. By introducing phosphorus, its structural and surface electronic properties promote lithium salt dissociation, construct a rapid ion transport channel, and improve the stability of the electrolyte / electrode interface, thereby enhancing the electrochemical and safety performance of the solid electrolyte.

The invention discloses an insulating carbon black composite material and application thereof in an electronic device sealant, belongs to the technical field of carbon black production, and aims to solve the problem that the sealant is poor in heat conduction and insulation performance. The preparation method of the composite material comprises the following steps: pretreating carbon black with nitric acid, reacting with silicon dioxide sol prepared from tetraethoxysilane to form a silicon dioxide coating, and modifying with KH550 to obtain the composite material. The composite material is mixed with a boron nitride-phosphorene composite nanosheet suspension and an organosilicon matrix, and the electronic device sealant is prepared through stirring, ultrasonic dispersion, 120 DEG C pre-curing, 160 DEG C secondary curing and vacuum defoaming. The volume resistivity of the sealant is greater than or equal to 1015 omega.cm, the heat conductivity coefficient of the sealant is greater than or equal to 1.0 W / (m.K), the tensile strength of the sealant is 11MPa, the working temperature of an electronic device can be reduced by 12-18 DEG C, and the sealant has high insulation, high heat conductivity and excellent mechanical properties.

The invention discloses an NIR removable adhesive, an NIR removable adhesive tape and a preparation method of the NIR removable adhesive tape. The NIR removable adhesive comprises an acrylic prepolymer, a hybrid filler and a coupling agent which are uniformly mixed, the hybrid filler comprises a compound formed by polydopamine modified black phosphorene and graphene oxide, and the coupling agent is distributed at the interface of the hybrid filler and the acrylic prepolymer. According to the acrylic acid adhesive added with the polydopamine modified black phosphorene-graphene oxide hybrid filler, provided by the invention, the adhesive force of the adhesive can be rapidly and controllably reduced under the irradiation of near-infrared light, and meanwhile, the adhesive has high thermal conductivity and flame retardance; the method is very suitable for electronic device repair, medical dressings, flexible electronics and other scenes needing precise stripping.

The invention discloses a composition, a thin film and a photoelectric device, the composition comprises a first material and a second material, the first material is selected from an organic P-type semiconductor material, the existence of the first material is beneficial for improving the film forming quality of the composition, the second material is selected from undoped or first metal element doped phosphorene, and the second material is selected from organic P-type semiconductor materials. The existence of the second material is beneficial to improving the conductivity of the composition and reducing the band gap of the composition, and the composition has good conductivity and film forming quality, can be applied to a photoelectric device, and is beneficial to improving the device efficiency and prolonging the device life of the photoelectric device.

The invention provides a method for rapidly synthesizing high-quality blue phosphorene based on molecular beam epitaxy and blue phosphorene. The method comprises the following steps: S1, carrying out argon ion etching and high-temperature annealing treatment on a Cu (111) substrate; s2, in an ultrahigh vacuum environment, taking the black phosphorus block as a precursor, and depositing P atoms through a molecular beam epitaxy method to form blue phosphorene with a super-flat honeycomb lattice; the method has the advantages that the black phosphorus block is used as a precursor, P atoms are deposited on the surface of Cu (111) at a specific temperature by adopting a molecular beam epitaxy method, and large-area and high-quality blue phosphorene can be rapidly obtained.

The invention discloses a wood aerogel framework which is characterized in that modified delignified wood aerogel is used as a packaging base material, and modified black phosphorene is doped into the packaging base material. The invention further discloses a flame-retardant sizing composite phase-change material of modified black phosphorene modified wood, the flame-retardant sizing composite phase-change material comprises the wood aerogel frame and a phase-change material, and the phase-change material is packaged in the wood aerogel frame. The invention further discloses a corresponding preparation method. The composite material has the following remarkable advantages that the flame retardant property and the photothermal conversion efficiency of the composite material are remarkably improved, and the latent heat of phase change is kept at a relatively high level; the packaging rate is as high as 90%, the latent heat loss is small, and the characteristics of no toxicity, environmental protection and the like are realized; the long-term thermal stability and chemical stability are excellent.

The application belongs to the technical field of alloy materials, and particularly relates to a copper-nickel composite material for new energy batteries and a preparation method thereof. The copper-nickel composite material comprises a copper-nickel composite sheet and a composite coating coated on the surface of the copper-nickel composite sheet. The copper-nickel composite sheet comprises the following raw material components by weight: copper powder 78-84 parts, nickel powder 10-15 parts, tin powder 2-4 parts, aluminum powder 3-7 parts, and modified phosphorene 2-5 parts. The modified phosphorene is prepared by the following process: adding ground black phosphorus crystals into water, ultrasonic stripping under an inert gas atmosphere, then adding an aqueous chloroauric acid solution and stirring, adjusting the pH to 10-11, adding a hydrazine hydrate solution and stirring for 1-2 hours to obtain the modified phosphorene. The copper-nickel composite material for new energy batteries has stable structure, excellent mechanical properties, and excellent corrosion resistance.

The present invention relates to the technical field of data analysis state monitoring, and particularly relates to a method for monitoring the curing state of a black phosphorus nanotube epoxy resin composite material. The method includes: during the preparation process of the black phosphorus nanotube epoxy resin composite material, collecting and processing curing temperature data, and obtaining a curing rate performance progress coefficient according to the temperature data during stirring and defoaming and curing; obtaining a composite material curing process trend coefficient according to the distribution of the curing rate performance progress coefficient; obtaining a composite material curing process state offset coefficient according to the composite material curing process trend coefficient, and judging the curing state; cooling and demolding: after curing is completed, cooling the material in the mold to room temperature, and obtaining the black phosphorus nanotube epoxy resin composite material through demolding. Thus, the preparation of the black phosphorus nanotube epoxy resin composite material is realized.

The invention belongs to the technical field of alloy materials, and particularly relates to a copper-nickel composite material for a new energy battery and a preparation method of the copper-nickel composite material. The copper-nickel composite material comprises a copper-nickel composite sheet and a composite coating coated on the surface of the copper-nickel composite sheet, the copper-nickel composite sheet comprises the following raw materials in parts by weight: 78-84 parts of copper powder, 10-15 parts of nickel powder, 2-4 parts of tin powder, 3-7 parts of aluminum powder and 2-5 parts of modified phosphorene. The modified phosphorene is prepared by the following preparation process: adding ground black phosphorus crystals into water, performing ultrasonic stripping in an inert gas atmosphere, then adding a chloroauric acid aqueous solution, stirring, adjusting the pH value to 10-11, adding a hydrazine hydrate solution, and stirring to react for 1-2 hours to obtain the modified phosphorene. The copper-nickel composite material for the new energy battery is stable in structure, excellent in mechanical property and excellent in corrosion resistance.

The invention discloses a preparation method of a computational iron-doped phosphorene two-dimensional diluted magnetic semiconductor material, which is designed on the basis of a first principle, and comprises the following specific steps: modeling: making phosphorene unit cells according to a lattice atomic structure, expanding the cells, and according to the difference of iron doping concentration, calculating the iron doping concentration of the phosphorene unit cells to obtain the computational iron-doped phosphorene two-dimensional diluted magnetic semiconductor material, thereby obtaining the computational iron-doped phosphorene two-dimensional diluted magnetic semiconductor material, and obtaining the computational iron-doped phosphorene two-dimensional diluted magnetic semiconductor material. The method comprises the following steps: selecting different multiples of expanded cells, doping: doping iron on the expanded phosphorene unit cells, calculating: calculating by using first principle calculation software VASP, and calculating by adopting generalized gradient approximation, setting a PBE exchange association energy functional of DFT-D3 dispersion correction and obtaining a result: obtaining tot data of a registration part in an OUTCAR file of first principle calculation software VASP and mag data in an OSZICAR file, and the method can effectively guide sample preparation and experiment design, greatly improve experiment efficiency and reduce time cost and material cost.

The invention relates to the technical field of data processing prediction, in particular to a black phosphorene epoxy plastic package composite material curing temperature prediction method, which comprises the following steps: selecting raw materials, mixing and stirring to obtain a mixed solution; after vacuum defoaming, pouring into a mold and curing at a set temperature; in the curing process, obtaining a curing dynamic collinearity characteristic difference coefficient according to the temperature data difference of different acquisition points in the curing process; and obtaining a local collinear feature division coefficient according to the curing dynamic collinear feature difference coefficient, obtaining a curing temperature ridge regression estimator according to the local collinear feature division coefficient, carrying out adaptive adjustment on the curing temperature, and carrying out cooling demolding after curing to obtain the epoxy molding compound nano composite material. According to the invention, accurate prediction of the temperature in the preparation process of the black phosphorene epoxy plastic package composite material can be realized.

The invention discloses a preparation method of a two-dimensional layered phosphorus pentamer, which comprises the following steps: selecting indium phosphide as a precursor, and accurately preparing a single-layer phosphorene structure on an Ag (111) single-crystal substrate by virtue of a molecular beam epitaxy technology. The two-dimensional phosphorus pentamer prepared by the invention has high purity and shows typical semiconductor characteristics, so that the two-dimensional phosphorus pentamer shows huge potential application value in the fields of electronic devices, photoelectric devices and related emerging science and technology. The preparation process of the two-dimensional phosphorus pentamer provided by the invention has accurate and controllable process parameters, simplified operation flow and excellent repeatability, and experimental verification shows that each index of the two-dimensional phosphorus pentamer meets the strict requirements of industrial production, so that powerful technical support is expected to be provided for the development of related industries.

The invention provides a black phosphorene tetramer metasurface refractive index sensor which comprises a plurality of tetramer metasurface units composed of dielectric substrates and tetramer structures, and the tetramer structures comprise rectangular black phosphorene patches. The rectangular black phosphorene patch adopts an in-plane asymmetric micro-perturbation structure with unequal sizes in the directions of the armchair shaft and the zigzag shaft, and the upper surface of the rectangular black phosphorene patch is provided with a medium cavity filled with a to-be-detected medium. The rectangular black phosphorene patch in the tetramer structure adopts an in-plane asymmetric micro-perturbation structure with low absorption loss as a dielectric material, so that radiation leakage of energy can be reduced, and meanwhile, the defect that the fano resonance line width is relatively wide due to metal plasma related intrinsic loss and additional damping of a mixed mode is eliminated; the two-dimensional sheet structure is easier to form strong near-field coupling and energy localization mainly based on surface current, radiation leakage of energy can be reduced, the in-plane asymmetric perturbation characteristic can improve the consistency of two orthogonal polarization resonance responses, and the detection precision is improved.

The invention belongs to the technical field of supercapacitors, and relates to a CoNi2S4-P-CNT composite electrode-based all-solid-state supercapacitor and a preparation method thereof, a cobalt source, a nickel source and thiourea are used as sulfur sources, a phosphorene-carbon nanotube composite dispersion liquid is combined, and the CoNi2S4-P-CNT composite electrode is prepared through a gradient hydrothermal-vulcanization-freeze drying-annealing process; the composite gel electrolyte is prepared by taking polyethylene glycol as a gel matrix, lithium bis (trifluoromethanesulfonimide) as an ion source and nano SiO2 as a reinforcing agent through an ultrasonic dispersion-microwave curing process; and the two components are assembled into the all-solid-state symmetric supercapacitor. According to the invention, a three-dimensional conductive network of the composite electrode and a gel electrolyte ion channel are constructed synergistically, the limitation of single component optimization is broken through, phosphorene bridged CoNi2S4 and carbon nanotubes form an efficient electron transport network, nano SiO2 constructs an ion channel in gel, and electron conduction and ion transport efficiency are improved synergistically with the phosphorene bridged CoNi2S4 and the carbon nanotubes.

The present application relates to the field of data processing and prediction technology, and specifically to a method for predicting the curing temperature of a black phosphorene epoxy molding composite material, the method comprising: selecting raw materials, mixing and stirring to obtain a mixed liquid; pouring the mixture into a mold after vacuum degassing and curing at a set temperature; during the curing process, obtaining a curing dynamic collinearity characteristic difference coefficient based on the temperature data difference at different collection points during the curing process; obtaining a local collinearity characteristic partition coefficient based on the curing dynamic collinearity characteristic difference coefficient, obtaining a curing temperature ridge regression estimator based on the local collinearity characteristic partition coefficient, adaptively adjusting the curing temperature, and obtaining an epoxy molding nanocomposite material by cooling and demolding after curing. The present application can achieve accurate temperature prediction during the preparation process of the black phosphorene epoxy molding composite material.

Disclosed are a composite, a film, and a photoelectric device. The composite material includes a first material and a second material. The first material is an organic P-type semiconductor material, and the second material is selected from one or more of phosphorene and a first metal element doped phosphorene. The composite has good conductivity and film-forming quality.

The present invention provides a device (11, 12, 13) for fluid sensing, comprising an arch structure having graphene and / or its related compound or any other type of two-dimensional layered inorganic material (2DM); the other types of two-dimensional layered inorganic materials comprise molybdenum disulfide, hexagonal boron nitride (h-BN), black phosphorus (phosphorene) and transition metal disulfides (TMDs). The dome structure may introduce turbulent flow into its received fluid flow, thereby altering the noise spectrum (one or both) of the dome structure and altering the electrical characteristics of the dome structure, thereby enabling sensing of one or more fluid flows in the environment. In addition, related systems and methods are also disclosed.

The application relates to the technical field of energy storage, and provides a battery monomer, a preparation method of the battery monomer, a battery device, an energy storage device and a power utilization device. The preparation method of the battery monomer comprises the following steps: dispersing black phosphorus powder in a buffer solution, adding an organic nitrogen source and a metal salt into the buffer solution, drying to obtain a coated precursor, and the organic nitrogen source contains oxygen elements; heating the coated precursor to T1 DEG C at a heating rate of 1 DEG C / min to 3 DEG C / min for first heating treatment, and then heating to T2 DEG C at a heating rate of 2 DEG C / min to 8 DEG C / min for second heating treatment to obtain modified phosphorene; obtaining an electric core assembly, the electric core assembly comprises a negative electrode, a diaphragm and a positive electrode which are arranged in a stack mode, and the negative electrode comprises the modified phosphorene; and placing an electrolyte and the electric core assembly in a shell. The battery monomer prepared by using the preparation method has good energy density and cycle performance.

The invention provides a phosphorene material, a processing method, a device structure, a preparation method and manufacturing equipment, and the processing method comprises the steps: placing the phosphorene material in a plasma processing cavity, introducing nitrogen to generate nitrogen plasma, and processing the phosphorene material through the nitrogen plasma. The prepared surface nitrogen modified two-dimensional phosphorene nanosheet has high air stability, and the stability in air can reach 60 days or above. The surface-nitrogen-modified two-dimensional phosphorene nanosheet prepared by the method has an atomic-scale flat surface, and the atomic-scale flat surface can be kept in the air for more than 60 days.

The invention discloses a phosphorene / graphene composite positive electrode active material as well as a preparation method and application thereof. The raw materials of the phosphorene / graphene composite positive electrode active material comprise phosphorene, graphene and sulfide solid electrolyte; the phosphorene is a few-layer phosphorene or a single-layer phosphorene; the number of the few layers of phosphorene is 2-10. The all-solid-state lithium battery with high energy density, high safety and excellent electrochemical performance is expected to be prepared by utilizing high theoretical specific capacity and excellent ion transmission performance of phosphorene as the positive electrode material and combining high ionic conductivity and safety of the sulfide solid electrolyte.

The present invention belongs to the technical field of lithium-ion batteries, and provides a prelithiated phosphorene material, a preparation method thereof, a negative electrode and a lithium-ion battery. The preparation method of the prelithiated phosphorene material includes: adding a lithium salt and phosphorene into a first solvent, performing ultrasonic treatment, then centrifuging, filtering the obtained supernatant, drying the obtained filter cake, to obtain the prelithiated phosphorene material. Based on the prepared prelithiated phosphorene material, a prelithiated negative electrode and a lithium-ion battery can be prepared. By directly prelithiating phosphorene, the present invention avoids the need for special equipment, reduces the process complexity of negative electrode prelithiation, and at the same time, improves the structural stability of the negative electrode.