99 results about "Black phosphorus" patented technology

The invention discloses a 3D printing stainless steel material and a preparation method thereof, and relates to the technical field of 3D printing stainless steel materials. The 3D printing stainless steel material comprises the following components in percentage by mass: less than or equal to 0.01% of carbon, less than or equal to 0.02% of silicon, less than or equal to 0.50% of manganese, 14.00-16.00% of nickel, 15.00-18.00% of chromium, 2.50-3.00% of molybdenum, less than or equal to 0.30% of niobium, 0.03-0.06% of cerium, 0.10-0.40% of a graphene material, 0.08-0.10% of a graphene coated black phosphorus composite material and the balance of iron. By preparing the graphene-coated black phosphorus composite material and cooperating with the graphene material and cerium, the comprehensive performance of the 3D printing stainless steel material is effectively improved, and finally a 3D printing product obtains higher strength and longer service life.

The application provides a preparation method of modified black phosphorus quantum dots, a nonaqueous electrolyte and a sodium ion battery thereof. The preparation method of the modified black phosphorus quantum dots comprises the following steps: S1, adding ground black phosphorus and nitrogen-containing heterocyclic ionic liquid into a solvent to obtain a reaction solution; and S2, refluxing the reaction solution in an inert atmosphere. The modified black phosphorus quantum dots are obtained by modifying the black phosphorus quantum dots by using the nitrogen-containing heterocyclic ionic liquid. When the modified black phosphorus quantum dots are applied to the nonaqueous electrolyte, the impedance of the sodium ion battery in the cycle process can be reduced, and the high-rate cycle performance and high-temperature cycle performance of the sodium ion battery can be effectively improved.

The application discloses a preparation method of a black phosphorus doped magnesium-based novel hydrogen storage material, and the method comprises the following steps: mixing and ball-milling black phosphorus micro powder and magnesium powder obtained through electrochemical exfoliation under an inert gas atmosphere, and performing ultrasonic crushing to obtain a nano Mg / BP composite material; and performing heat treatment on the nano Mg / BP composite material under an H2 atmosphere to obtain a nano MgH2 / BP hydrogen storage material. The method uses cheap magnesium powder as raw material, embeds the magnesium powder between expanded black phosphorus layers by using a simple method combining ball-milling and ultrasonic crushing, uses lone pair electrons of the black phosphorus as anchor points to solve the problem of easy agglomeration of magnesium powder nanoparticles, simultaneously uses a large specific surface area of the black phosphorus and strong physical adsorption characteristics of the black phosphorus on hydrogen to expand the capacity of the hydrogen storage material, and finally uses the attraction ability of the lone pair electrons of the black phosphorus on high-valence magnesium in magnesium hydride to weaken Mg-H bonds and effectively reduce the dehydrogenation temperature. The preparation method has the advantages of low cost, short cycle, strong repeatability and wide application prospect in the field of hydrogen energy.

This invention belongs to the field of biomedical materials technology, and relates to a black phosphorus phthalocyanine hydrogel, its preparation method, and its application. The black phosphorus phthalocyanine hydrogel comprises black phosphorus phthalocyanine and a photocurable gel. The preparation method of black phosphorus phthalocyanine includes the following process: under acidic conditions, black phosphorus nanosheets are mixed with aminosilicon phthalocyanine, allowing the black phosphorus nanosheets and aminosilicon phthalocyanine to self-assemble to form black phosphorus phthalocyanine. This invention combines black phosphorus with aminosilicon phthalocyanine; under the action of near-infrared laser, black phosphorus and aminosilicon phthalocyanine can synergistically exert a bactericidal effect. Simultaneously, black phosphorus can degrade, and its product, phosphate, can promote bone tissue regeneration, thus more effectively treating peri-implantitis.

The invention relates to a device and a method for efficiently purifying black phosphorus based on an electromigration separation principle. According to the method, the Coulomb force borne by black phosphorus is larger than the weak acting force combined with the impurities through the designed three-area grading electric field device by means of the conductivity difference between the black phosphorus and the impurities, the black phosphorus is separated from the impurities firstly, particles are promoted to generate different movement tracks, and therefore the purposes of separation and purification are achieved, and meanwhile the integrity of a crystal structure is maintained. The core of the device is composed of three functional areas, namely a preselection area, a main selection area and a fine selection area. The uniform electric field intensity of 15-20kV / m is adopted in the pre-selection area, so that impurities such as oxides adsorbed on the surface of the black phosphorus can be effectively removed; the gradient electric field intensity of 30-40 kV / m is adopted in the main selection area, and a parallel static magnetic field of 0.5-2 T is introduced, so that metal impurities (such as tin and bismuth) and non-metal impurities (such as red phosphorus and iodine) can be effectively removed; a uniform electric field of 25-35 kV / m is adopted in the fine selection area, trace impurity elements can be finely removed, and the purity of the finally obtained crystal is larger than 99.5%.

The application belongs to the technical field of two-dimensional material preparation, and discloses a preparation method of two-dimensional tin phosphide material. In view of the problems of complex equipment, high cost and strong interface coupling existing in the preparation of two-dimensional SnP3 by using the existing molecular beam epitaxy method, the SnBi / Si (111) substrate with lamellar eutectic structure is prepared by Van der Waals extrusion, and the substrate has the functions of weak coupling interface and self-supply Sn source; the controllable epitaxial growth of two-dimensional SnP3 is realized under the condition of low-temperature chemical vapor deposition at 100 DEG C to 150 DEG C by taking black phosphorus as a phosphorus source. The application has simple process and mild conditions, and can obtain large-area and high-quality two-dimensional SnP3, and is suitable for the fields of optoelectronic devices and integrated circuits.

This invention relates to the field of oil additives for power generation, specifically a method for in-situ preparation of black phosphorus nanoparticles (BPNPs) using PVA / PAAM interpenetrating network hydrogel as a microreactor and its application as a wear-resistant additive in lubricating oils. The confinement effect of the interpenetrating network hydrogel results in uniform BPNP size and high crystallinity, thus endowing BPNPs with excellent air / water / oil stability, with an oxidation rate of <5% within 7 days. Swelling allows RP / KI to permeate uniformly and be physically embedded in the network. Subsequently, under a nitrogen protective atmosphere, photolysis of iodine ions generates solvated electrons (e). ‑ (aq) restores RP to P ‑ P ‑ The BP crystal nucleus is formed by recombination, and the IPN three-dimensional nanochannels (pore size 30~120nm) confine and inhibit excessive growth of the crystal nucleus. At the same time, the PVA hydroxyl groups and PAAm amide groups passivate the BP surface in situ through hydrogen bonding / coordination, preventing oxidation.

The application provides a black phosphorus-carbon composite material and a preparation method and application thereof. The preparation method comprises the following steps: reacting black phosphorus and carbon material in an organic amine solvent at 80-200 DEG C to obtain the black phosphorus-carbon composite material. The black phosphorus-carbon composite material is prepared by using a solvothermal method. The reaction condition is mild, the operation is simple, the equipment is simple, and the scale-up is easy. When the black phosphorus-carbon composite material is used as a negative electrode material of a lithium ion battery, the black phosphorus-carbon composite material has good rate and cycle performance.

The invention relates to the technical field of sodium ion battery processing, in particular to solid waste treatment equipment for sodium ion batteries, which comprises a main body unit, a screening unit and a grinding unit, and is characterized in that the main body unit is used for sorting pretreated waste to obtain black phosphorus powder and coarse grain shells; the screening unit is used for screening the black phosphorus powder to obtain black phosphorus powder with proper granularity; the motor drives the rotating shaft to rotate, the rotating shaft drives the rotating rod and the spiral piece to rotate through the first chain wheel and the first chain, the spiral piece drives waste to move forwards when rotating, and in the moving process, coarse grain shells move to a sorting shell outlet to be collected; the black phosphorus powder falls into the screening unit through holes in the sorting shell to be screened out to obtain proper black phosphorus powder, then the proper black phosphorus powder is ground and purified through the grinding unit, the waste mixture is sorted into all materials, follow-up treatment can be conveniently conducted on all the materials in the waste, all the materials are recycled and reused, and waste of resources is reduced.

The invention relates to a preparation method of a secondary ball-milled sulfur-doped phosphorus-carbon negative electrode material and application of the secondary ball-milled sulfur-doped phosphorus-carbon negative electrode material in a sodium-ion battery. The preparation method comprises the following steps: respectively weighing a proper amount of phosphorus source, carbon source and sulfur source according to a certain ball-to-material ratio; the phosphorus source can be selected from red phosphorus or black phosphorus, and the carbon source can be a carbon material with good conductivity and structural stability, such as graphite, carbon nanotubes, conductive carbon black and the like; the sulfur source may be a mixture of an inorganic sulfur source and a sulfur-containing biological agent. The primary ball-milling comprises the following steps: adding a phosphorus source and a carbon source into a ball-milling tank according to a certain proportion, and carrying out ball-milling treatment at a certain rotating speed for a certain time under the protection of inert gas, so that the phosphorus source and the carbon source are fully hybridized to form a phosphorus-carbon bond; and mixing the phosphorus-carbon material obtained by primary ball milling with a sulfur source, uniformly adding the mixture into the ball milling tank, carrying out secondary ball milling treatment at a certain rotating speed for a certain time under the protection of inert gas, and gradually dispersing and doping the sulfur source into the phosphorus-carbon system in the process to form the sulfur-doped phosphorus-carbon negative electrode material.

The invention discloses a black phosphorus-carbon-supramolecular composite material as well as a preparation method and application thereof. The composite material consists of black phosphorus, a carbon material and supramolecules, and is prepared by adopting a planetary ball milling method, the introduction of supramolecular cyclodextrin accelerates the hybridization of the black phosphorus-based material, enhances the action with a binder, adsorbs electrochemical by-products, and promotes flame retardance; the preparation method is simple and controllable, and the obtained composite material has high electrochemical performance and high flame-retardant efficiency, can be used as a high-safety fast-charging lithium battery negative electrode material, and effectively solves the problems of volume expansion, poor safety and the like of the existing black phosphorus-based material.

The invention relates to an infrared polarized photoelectric detector and a preparation method thereof, and belongs to the technical field of photoelectric detection, and the preparation method comprises the following steps: 1, cleaning a substrate; 2, preparing a patterned metal electrode; step 3, preparation and transfer preparation of a two-dimensional material; respectively stripping from the blocky niobium diselenide crystal and the blocky black phosphorus crystal by adopting a mechanical stripping method to obtain a niobium diselenide sheet and a black phosphorus sheet, and respectively transferring the obtained sheets to the surface of a polydimethylsiloxane elastomer; step 4, Van der Waals assembling of the two-dimensional metal electrode; the two niobium diselenide sheets are sequentially transferred to the substrate with the patterned metal electrodes through a micromanipulation system, the two niobium diselenide sheets are aligned with the two patterned metal electrodes respectively and make close contact with the patterned metal electrodes, and a set distance is kept between the two niobium diselenide sheets; step 5; forming a heterojunction structure; the beneficial effects of the invention are that through the NbSe2-BP-NbSe2 structure, the intrinsic anisotropy of black phosphorus is utilized to respond to polarization information, and the infrared polarization detection precision is improved.

The ghost elimination method based on polarization-spectrum coupling of the ghost elimination method of the present application comprises a reflection layer, which reflects the radiation light of an imaged object and generates a ghost signal; a rotatable polarizer, the rotation angle theta is matched with the black phosphorus crystal axis direction of the black phosphorus spectrum polarization coupled infrared photodetector; the black phosphorus spectrum polarization coupled infrared photodetector is sequentially arranged from bottom to top as follows: SiO2 / Si substrate as an insulating support layer, graphene layer on the SiO2 / Si substrate, InSe thin film covering the graphene layer to form a type II heterojunction interface, black phosphorus layer on the InSe thin film as a core photosensitive layer, Cr / Au metal composite electrode deposited on the graphene layer and the black phosphorus layer respectively, the in-plane anisotropy ratio PER(lambda) of the black phosphorus layer changes with the wavelength, and the difference between the light response value I~alpha T 4 / PER(lambda) distinguishes the real signal from the ghost signal, and provides a miniaturized, self-driven ghost elimination system and method.

The invention discloses a preparation method of a transition metal doped black phosphorus-graphite composite material based on a secondary ball milling method, which comprises the following steps: carrying out ball milling on black phosphorus and a transition metal precursor in an inert atmosphere to enable atomic-scale metal to preferentially react with the black phosphorus and form a stable M-P bond to obtain the transition metal doped black phosphorus; then, the obtained doped product and graphite are subjected to secondary ball milling, so that the doped product is uniformly embedded into a carbon material framework, a continuous conductive network is constructed, the obtained composite material can effectively inhibit irreversible collapse and serious volume expansion of a black phosphorus structure in the circulation process, interface bonding between the black phosphorus and the graphite is enhanced, and the performance of the composite material is improved. The charge transfer impedance is obviously reduced, the lithium ion diffusion rate is improved, and the electron transmission efficiency of the material is obviously improved; meanwhile, the atomic-scale dispersion structure can achieve a higher metal atom utilization rate, and when the composite negative electrode material is applied to a lithium ion battery, the composite negative electrode material has high specific capacity and excellent cycling stability and rate capability and has a wide fast charge energy storage application prospect.

The invention relates to the technical field of composite materials. The invention particularly relates to preparation and application of an efficient red phosphorus-black phosphorus / expandable graphite flame retardant. Through a green solvent-free ball milling method, red phosphorus and expansible graphite are subjected to local high temperature, high pressure and shearing force generated by mechanical action in a nitrogen protection atmosphere, and structure reconstruction and surface modification are induced. The uniformly dispersed red phosphorus and black phosphorus / expandable graphite composite material is applied to a polypropylene material, can play a role in gas phase and condensation phase, and can achieve an excellent flame retardant effect under a relatively low addition amount. When the prepared composite material is applied to flame-retardant treatment of various kinds of polypropylene, extremely high flame-retardant efficiency and a mechanical enhancement effect can be achieved, and meanwhile functional application of the polypropylene in various application scenes can be expanded.

The invention discloses a black phosphorus derived two-dimensional lamella / zinc phosphating composite coating and a preparation method thereof, and belongs to the field of metal surface engineering and interface chemistry. The method comprises the following steps: forming a porous zinc phosphating layer on the surface of a metal matrix, and then further forming the black phosphorus derived two-dimensional lamella / zinc phosphating composite coating by using an RS-H-BP dispersion liquid through a conventional liquid phase deposition method, in order to improve the multi-effect protection performance of the composite coating, preferably, a phosphorus-enriched transition seed layer is formed on the surface of the zinc-series phosphate coating through low-temperature vapor deposition, or the phosphorus-enriched transition seed layer is not prepared, and RS-H-BP dispersion liquid with different solid contents is subjected to graded deposition to form a film, so that the steady-state COF of the composite coating is controlled to be about 0.11, and the fluctuation range of the friction coefficient is very small; and the corrosion-resistant time reaches 720 h or above, the electrochemical impedance is remarkably reduced, the hundred-lattice adhesive force reaches the level 0, and the aluminum alloy material is suitable for antifriction and corrosion-resistant protection of aluminum alloy components in the fields of automobiles, rail transit, aerospace, 3C electronics and the like.

The invention relates to the field of semiconductor technology and chemical preparation, and provides a preparation method of phosphorus single crystals and heterojunctions. The method specifically comprises the steps that raw material phosphorus is sequentially subjected to first heating treatment, first heat preservation treatment and first cooling treatment, a first cooling treatment product is subjected to second heat preservation treatment and optionally second cooling treatment and second natural cooling treatment, so that phosphorus single crystals or heterojunctions are obtained, and the temperature difference between the raw material end and the product end does not exceed 5 DEG C. The black phosphorus single crystal, the purple phosphorus single crystal or the black phosphorus-purple phosphorus heterojunction can be selectively prepared by using the same reaction system and under different reaction parameters, and the method has the advantages of simple process, low energy consumption, high product purity or product quality, easily available raw materials, low cost and the like; the prepared black phosphorus single crystal, the prepared purple phosphorus single crystal and the natural heterojunction of the black phosphorus single crystal and the purple phosphorus single crystal can be widely applied to the fields of transistor channel materials, photoelectric detectors, photoelectric synapses and the like.

The invention provides a portable self-powered pressure sensing device based on CNTs-BP / MOF, a preparation method and an application. The sensing device comprises a pressure sensor and a super capacitor. The pressure sensor comprises an elastic substrate and a thin film material arranged on the elastic substrate; the supercapacitor comprises two interdigital electrodes, and each interdigital electrode comprises a substrate, an electrode layer and a thin film material. The film material contains black phosphorus, a metal organic framework and carbon nanotubes. The energy storage performance of the black phosphorus-based supercapacitor is effectively improved, the surface protection of black phosphorus is effectively realized, and the black phosphorus is prevented from being oxidized and deteriorated; the pressure response of the black phosphorus, the metal organic framework 8 and the carbon nanotube composite film is effectively realized, and the method can be used for monitoring motion information of different parts of a human body.

The application belongs to the technical field of thermoplastic polyurethane elastomers, and particularly relates to a photo-induced deformation TPU material and a preparation method and application thereof. The photo-induced deformation TPU material comprises the following raw materials in parts by weight: 30-38 parts of diisocyanate; 5-10 parts of modified black phosphorus nanosheet; 40-50 parts of polycarbonate diol; 9-12 parts of chain extender; and 0.5-1 part of catalyst. The preparation method of the modified black phosphorus nanosheet comprises the following steps: performing ice-water bath ultrasonic treatment on black phosphorus crystals and an amino compound in a polar aprotic solvent to obtain amino-functionalized black phosphorus nanosheet; and dispersing the amino-functionalized black phosphorus nanosheet in an aromatic solvent to make it react with diphenylmethane diisocyanate to obtain the modified black phosphorus nanosheet. The photo-induced deformation TPU material prepared by using the modified black phosphorus nanosheet as a light response filler has excellent photo-induced deformation performance, good mechanical performance and cycle stability.

This invention belongs to the field of micro-electromechanical biosensing technology, specifically relating to a flexible sensor for real-time monitoring of gallic acid content in plants, its preparation method, and its application. The flexible sensor includes a flexible substrate and a working electrode, a reference electrode, and a counter electrode disposed on the substrate. The working electrode is a laser-induced graphene electrode (LIG) with its surface sequentially modified with black phosphorus nanosheets (BP), sheet-like titanium carbide (MXene), and manganese phosphorus sulfur (MnPS3). This flexible sensor can achieve online detection and analysis of gallic acid in plant tissues at different stages. Because it is a patch-type adaptive sensor for plant surfaces, it does not cause fundamental damage to the detected material, allowing the material to continue growing until maturity. Furthermore, the layer-by-layer assembly of the working electrode with black phosphorus nanosheets, MXene, and MnPS3 achieves highly sensitive detection of gallic acid, offering advantages such as lightweight portability, excellent electrical performance, and high integration.

The application discloses a preparation method of a black phosphorus modified nitrogen-doped noble metal / carbon catalyst and relates to the technical field of catalytic hydrogenation. Black phosphorus, a nitrogen source and a carbon carrier are compounded in a ball milling mode, and a black phosphorus modified nitrogen-carbon composite is obtained after calcination under an inert atmosphere; the black phosphorus modified nitrogen-carbon composite is loaded with noble metal through a hot reflux method, and a black phosphorus modified nitrogen-doped noble metal / carbon catalyst is obtained after calcination; and the obtained black phosphorus modified nitrogen-doped noble metal / carbon catalyst is applied to a chloronitrobenzene hydrogenation reduction reaction. The application introduces black phosphorus to improve the bonding capacity of nitrogen-carbon bonds and increase the defects on the surface of nitrogen-carbon, and the synergistic effect among black phosphorus, nitrogen-carbon and noble metal is improved, the catalyst consumption is reduced, the catalytic performance is greatly improved, and the economic benefits of industrial production are improved.

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 invention discloses a novel anti-tumor two-dimensional photothermal material and a preparation method thereof.The preparation method comprises the steps that after a BP nanosheet is prepared through a liquid stripping technology, Fe < 3 + > is introduced, FeBPs is prepared through an in-situ biomimetic mineralization method, BP is subjected to in-situ biomimetic mineralization through metal ions Fe < 3 + >, and the black phosphorus nanosheet-(FeBPs) with the surface modified by an iron-phosphoric acid organic coordination layer is constructed. After the FeBPs enter tumor cells, dissociation of a mineralization layer is initiated under the synergistic effect of GSH, Fe < 3 + > is reduced into Fe < 2 + >, a large amount of GSH in the cells is consumed, the GPX4 protein level is lowered, ROS accumulation is caused, and tumor cell ferroptosis is induced. Meanwhile, by means of the excellent photo-thermal performance of BP after dissociation of the mineralization layer, under irradiation of near-infrared light 808 nm, the temperature of tumor tissue is increased, tumor ablation is caused, then photo-thermal / ferroptosis collaborative treatment is achieved, and a new treatment strategy is provided for tumor treatment research.

The invention discloses a nickel hydroxide / amorphous black phosphorus electrode electro-catalysis water decomposition device, and belongs to the technical field of electrochemistry. By constructing black phosphorus-based transition metal oxide interface electron transport engineering, an amorphous black phosphorus and beta-nickel hydroxide compounded efficient OER catalytic system is designed, and the preparation method has the advantages that the preparation method is simple and convenient, interface regulation and control are accurate and the like. Compared with a single beta-nickel hydroxide catalyst, the introduction of black phosphorus significantly enhances the electron transport capability and structural stability of the composite material, thereby enhancing the catalytic activity and stability. Compared with crystalline black phosphorus, the amorphous black phosphorus has higher carrier mobility, so that the interface charge transfer is further enhanced, the dynamic maintenance of active sites is promoted, and the continuous high efficiency of the reaction process is ensured. The electro-catalysis water decomposition device constructed by the invention can efficiently promote decomposition of water molecules under an illumination condition, and provides feasibility for constructing a solar-driven water decomposition system.

The application provides a black phosphorus-based composite negative electrode material and a preparation method and a lithium ion battery thereof, and the preparation method comprises the following steps: (1) mixing graphite and black phosphorus to obtain a composite material; (2) mixing the composite material and a saccharide compound in a solvent, and performing a hydrothermal reaction to obtain the black phosphorus-based composite negative electrode material; wherein the solvent comprises water and ethylene glycol. The hydrothermal reaction of the composite material and the saccharide compound in the solution system of water and ethylene glycol can make the system reaction more uniform, and the ethylene glycol can reduce the reaction rate, so that the carbonization reaction is more gentle, and then the black phosphorus-based composite negative electrode material with high purity, good dispersity and uniform carbon coating is obtained. In addition, the carbon coating effectively improves the conductivity of the material, and at the same time, the volume expansion of the black phosphorus is relieved, and then the cycle performance is improved, and the capacity of the prepared battery can meet the development requirements of high energy density of electric vehicles.

The application provides a chitosan hydrogel and a preparation method and application thereof, and a black phosphorus-based electrode sheet and application thereof, and relates to the technical field of electrode materials.The chitosan hydrogel provided by the application comprises chitosan and catechol functional groups grafted on the chitosan through C-N bonds.The chitosan after grafting the catechol functional groups has a greatly improved solubility in water and is in a gel state.The catechol groups enable the chitosan hydrogel to have good wet adhesion resistance, so that the phosphorus negative electrode can well maintain the structure in the electrolyte, and further enable the black phosphorus-based electrode sheet to realize stable long cycle life and high capacity retention rate under a large current density.In addition, the chitosan hydrogel has excellent adhesion to the phosphorus-carbon composite material, and is rich in polar functional groups and can adsorb soluble polyphosphorus compounds generated in a side reaction, anchor a large amount of active substances, inhibit the loss of active substances caused by the side reaction, and significantly improve the capacity.

This application belongs to the field of two-dimensional semiconductor optoelectronic device technology, and discloses a two-dimensional black phosphorus electroluminescent device based on a Cu / In stacked contact interface and its fabrication method. This invention addresses the pain points of traditional pure metal contacts, such as severe Fermi level pinning, high contact barriers, low carrier injection / collection efficiency, and the easy oxidation and diffusion of a single In electrode and poor bandgap matching of a single Cu electrode. It employs a Cu / In stacked metal as the contact electrode. The lower In layer is directly bonded to the black phosphorus active layer, suppressing interface defect states and breaking Fermi level pinning. By controlling the layer thickness ratio and low-temperature interface alloying, continuous and precise control of the work function from 4.1 eV to 4.7 eV is achieved, matching the bandgap of black phosphorus with different numbers of layers. The upper Cu layer also serves to provide high conductivity, block In diffusion, and isolate water and oxygen. This invention improves the external quantum efficiency by more than 4 times and the photoelectric responsivity by more than 2.5 times. The process is compatible with traditional semiconductor fabrication processes and is suitable for industrial application.

The invention provides a preparation method and electrochemical performance of an intercalated black phosphorus-lithium-sulfur battery material, and the preparation method comprises the following steps: inserting Li < + > between black phosphorus layers by adopting a liquid phase intercalation method, preparing the intercalated black phosphorus-lithium-sulfur battery material by adopting a ball milling method, forming a coating on the surface of an LPSC electrolyte material, and constructing a lithium ion transmission channel, so as to obtain the intercalated black phosphorus-lithium-sulfur battery material. The ionic conductivity and the stability of the composite material are improved; the ionic conductivity of the intercalated black phosphorus-lithium-sulfur battery material is 80% higher than that of an LPSC material, no obvious oxygenolysis phenomenon occurs in a cyclic voltammetry test, the LPSC material has obvious oxygenolysis under 2.2 V and 2.82 V, and the stability of the composite material is excellent.

The present application relates to a kind of black phosphorus modified platinum nanotube array and its preparation method and application, specifically, the method for preparing black phosphorus modified platinum nanotube array by zinc oxide template assisted electrochemical co-deposition is used to improve the performance of water electrolysis hydrogen evolution reaction, especially the performance of alkaline medium hydrogen evolution reaction.The present application uses conductive material as substrate, by constant current template assisted electrodeposition, zinc oxide nanorod array loaded on conductive substrate is obtained, then black phosphorus modified platinum nanorod array is prepared by constant current electrochemical co-deposition, finally, after removing zinc oxide template by corrosive aqueous solution, black phosphorus modified platinum nanotube array is obtained.As hydrogen evolution catalyst, it can significantly reduce the cathode overpotential of water electrolysis, while reducing the loading amount of noble metal, with high energy conversion efficiency and economic benefit.The black phosphorus modified platinum nanotube array prepared by the method has excellent electrocatalytic performance, and the catalyst preparation process has good reproducibility and can be scaled up, with commercial application potential.