103 results about "Electronegativity" patented technology

The invention provides a design and application of a power type electrolyte of a double-electric-layer capacitor, and the electrolyte comprises an organic solvent, an electrolyte salt and an additive. Wherein the additive has a general formula structure as shown in Figure 1: the additive has a strong electronegativity part and a strong electropositivity part, a proper chain length is adjusted between the two parts, so that the whole molecular size of the additive can be matched with the micropore diameter of the activated carbon, adsorption and desorption are facilitated, bond breaking is easy, and when part of pseudocapacitance is contributed through oxidation bond breaking, the performance of the additive is improved. According to the present invention, the positive electrode and the negative electrode can be preferentially adsorbed to the positive electrode and the negative electrode so as to form the regulation and the low polarity and high density interface, such that the ion association of the salt ions at the double electrode layer is reduced, the reduction of the liquid phase transmission internal resistance is achieved, the excellent power performance is further represented, and the capacity retention rate in the 125A large-rate cycle (the conventional current is 25A) is increased to 90.1% from 76.3%. In addition, the silicon-containing part formed by broken bonds can also synergistically remove HF generated by hydrolysis of salt anions BF4 <-> in the electrolyte, passivate Al foil and reduce the contact internal resistance of the aluminum conducting bar. The configuration of the additive introduced into the electrolyte is shown in the specification.

The application provides a Sn-doped Fe-N-C catalyst, a preparation method and application thereof. The catalyst comprises a carrier and Sn atoms and Fe atoms supported on the carrier, and the carrier is an N-doped carbon material. The application dopes the p-block metal Sn with stronger electronegativity into the Fe-N-C catalyst, forms an electron-withdrawing environment around the FeN4 site, reduces the electronegativity of the FeN4 site, and weakens the adsorption strength of the FeN4 site on the oxygen reduction intermediate. Meanwhile, the metal Sn is weaker in reactivity with hydrogen peroxide produced by the reaction of oxygen via a two-electron process than Fe, reduces the concentration of free radicals produced by the reaction, improves the stability of the carrier and active sites, and can effectively prevent the shedding of Fe. The application uses the catalyst as a cathode catalyst of a proton exchange membrane fuel cell, is low in cost, and can simultaneously meet the requirements of high catalytic activity and good stability.

The application provides a fluorine-doped Fe-N-C composite material and a preparation method and application and regeneration thereof, and belongs to the technical field of water pollution. In the application, an iron precursor, a zinc salt, an organic ligand and an organic solvent are mixed to synthesize Fe-doped metal organic framework Fe@ZIF-8 material, and then the Fe@ZIF-8 material is carbonized into Fe-N-C material; then the Fe-N-C material is mixed with a fluorine source and subjected to secondary carbonization to obtain the fluorine-doped Fe-N-C composite material. In the application, fluorine atoms are introduced into the Fe-N-C material to produce axial coordination with Fe of the FeN4 center, the fluorine element with high electronegativity can effectively improve the isoelectric point of the Fe-N-C material, the reaction activity of the material is enhanced, the Fe leaching of the material in the reaction process is inhibited, and the stability of the material is improved. In addition, the prepared fluorine-doped Fe-N-C composite material can be reused through fluorine-doping regeneration, and high reduction activity and stability can be maintained.

The invention discloses a synthesis method and application of a non-condensed ring electron acceptor, which are different from a traditional condensed ring structure or a single alkyl chain side chain, and a dichlorobenzene unit is introduced as a conformation regulating group. As chlorine atoms have strong electronegativity and proper atomic radius, remarkable non-covalent interaction such as Cl-S and Cl-pi can be generated among molecules. The interaction is similar to a set of precise molecular guide rails, molecules are guided to perform highly ordered pi-pi accumulation, so that electron cloud overlapping is remarkably enhanced, and an efficient electron transmission channel is constructed. According to the organic solar cell prepared based on the non-condensed ring electron acceptor material designed by the invention, the electron mobility is remarkably improved, and meanwhile, the charge recombination loss of a device is effectively reduced.

The application is a divisional application of Chinese patent application No. 202011250638.2 entitled "Structure of steric hindrance adjustable weak base light stabilizer and preparation method and application thereof". The present application belongs to the field of new compounds and their synthesis methods, and specifically relates to a steric hindrance adjustable weak base light stabilizer and a preparation method and application thereof. The innovative light stabilizer of the present application adjusts the steric hindrance by establishing the size of the substituent group that produces steric hindrance around the nitrogen atom in the general structure. In addition, by adjusting the distance of the polar group, the electronegativity of the nitrogen atom can be affected, thereby adjusting its basicity or nucleophilic property. By adjusting the steric hindrance and nucleophilic property or basicity of the nitrogen atom in the environment, the desired effect is obtained, and the application range of the innovative light stabilizer is widened, so that it is widely applicable to PC, polyester, PU, PVC and other acidic or electrophilic polymer materials as a light stability protection aid.

The invention relates to the field of application of dielectric energy storage materials, and discloses application of a polyimide film in a dielectric energy storage material. The polyimide is prepared by copolymerizing bis [4-(4-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4'-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride. Ether bonds are introduced to two sides of diphenyl sulfone to destroy a continuous conjugated structure between an imide ring and diphenyl sulfone, hexafluoroisopropylene with high electronegativity is introduced into a dianhydride unit, and high-temperature insulativity is improved through interaction of the three. When the prepared polyimide film is used as a dielectric medium energy storage material, the high-temperature insulation property is improved while the heat resistance and the relatively high dielectric constant are maintained, so that the energy storage property of a capacitor is improved. The discharge energy density of 7.25 J / cm < 3 > and 4.79 J / cm < 3 > is realized at 200 DEG C and 250 DEG C respectively, and the efficiency is greater than 90%.

The invention relates to the technical field of organic photoelectric materials and photovoltaic devices, in particular to a fluorine-substituted benzimidazolyl aniline compound and a synthesis method and application thereof. The structural general formula of the compounds is as shown in a formula I in the specification. The compound is introduced into a perovskite precursor solution as an additive and is used for preparing a perovskite thin film and a trans-perovskite solar cell. According to the compound provided by the invention, synergistic passivation of multi-site defects such as uncoordinated Pb < 2 + > and iodine vacancies is realized through aniline amino and benzimidazole ring N atoms in molecules, and non-radiative recombination is remarkably reduced; the strong electronegativity of fluorine atoms can enhance the electrostatic interaction between molecules and a perovskite Pb-I skeleton, meanwhile, a large conjugated system promotes pi-pi accumulation, and experimental results show that the photoelectric conversion efficiency of a champion device based on the additive can reach 23.3%; .

The invention relates to the technical field of gas production materials, and discloses preparation and application of a high-nitrogen energetic gas production material, triazole has high-energy and multi-nitrogen characteristics, nitryl compounds have high energy, and the combination of triazole and nitryl compounds enables the gas production material to have the characteristics of large gas production rate, low-temperature combustion, less harmful gas and the like; the molecular structure contains a large number of N-N, C-N and C = N bonds and has high enthalpy of formation, meanwhile, the content of C and H in the molecule is low, the density of the energetic material can be improved, the electronegativity of nitrogen and oxygen atoms in the structure is high, and the energetic material is a painful energetic material and has high safety in the using process; compared with similar gas production materials, the prepared gas production material has the advantages that the gas production rate is greatly increased, the amount of solid residues is greatly reduced, the added adhesive has no corrosivity, the prepared gas production material is good in fluidity, the external additive can play a role in slagging, and the residues are not prone to being sprayed out.

This invention discloses a heterostructure of sodium-ion battery anode material, its construction method, and its performance prediction method. It belongs to the field of electrochemical energy storage technology, and obtains Nb by substituting Nb atoms with Ge or Sn. 1‑ x A x CO2, then combined with 2D SiC to construct SiC / Nb 1‑x A x A CO2 heterostructure was developed to obtain a sodium-ion battery anode material with improved electrochemical performance. The monolayer Nb2CO2 MXene provided good electronic conductivity and structural stability for the anode material, while the introduction of SiC ensured excellent structural stability and high theoretical capacity. The combination of SiC and Nb... 1‑x A x The heterostructure interface formed by CO2 plays an important role in promoting electronic conductivity and Na ion transport. Due to the similar electronegativity of Ge and Sn to C, the A-C bond formed between the alloying elements and C is stronger than the Nb-C bond, thus enhancing the stability of the heterostructure and maintaining the integrity of the electrode structure.

A contact separation mode triboelectric soft X-ray emission device comprises a motion structure used for providing power for reciprocating linear motion; the contact structure is arranged in a vacuum environment and comprises an active contact unit and a passive contact unit which can move relatively to perform periodic contact and separation, and the active contact unit is connected with the moving structure; the contact surface of the active contact unit and the contact surface of the passive contact unit are respectively covered with materials with different electronegativity. The contact force measuring unit is used for measuring the contact pressure between the active contact unit and the passive contact unit in real time; wherein the motion structure is configured to adjust a driving parameter of the motion structure according to the contact pressure of the contact force measuring unit, so as to control the output characteristic of the soft X-ray.

The invention discloses a preparation method of a nitrogen-sulfur co-doped modified layered double-oxide material, and belongs to the technical field of water treatment.The preparation method comprises the following steps that 1, a carbon felt substrate is pretreated and dried, the treated substrate is placed in a uniform solution containing Fe (NO3) 3.9 H2O and Ni (NO3) 2.6 H2O to be subjected to a hydrothermal reaction, and after the hydrothermal reaction is completed, the substrate is taken out and dried; carrying out ultrasonic treatment and washing with deionized water to obtain a NiFe-LDH precursor; and (2) drying the obtained precursor, dipping the dried precursor in an ethanol solution of ammonium persulfate, and then carrying out high-temperature carbonization treatment in an inert gas atmosphere to prepare the nitrogen-sulfur co-doped modified nickel-iron layered double-oxide material. The difference of nitrogen and sulfur in atomic radius, electronegativity and doping form enables the co-doped structure to effectively regulate and control the electronic structure of the material: nitrogen doping improves conductivity, and sulfur doping promotes exposure and stability of active sites. The co-doping synergistically optimizes the electronic structure and catalytic activity of the material, so that the material has excellent capacitive deionization removal performance and electrocatalytic activity at the same time.

The present disclosure provides an organic electronic material containing a nitrogen heterocycle and a preparation method and use thereof, and relates to the technical field of organic electroluminescence. Nitrogen-containing heterocycles such as pyridine, triazine or pyrimidine are introduced into a main structure of phenanthrene, such that the electronegativity of the material is enhanced, and the electron transport performance and the thermal stability of a compound are improved. The organic electron transport material provided by the present disclosure has a relatively good thermal stability, a high luminous efficiency and a high luminous purity. An organic light-emitting device prepared from the organic electronic material has effects of reducing a driving voltage, improving a luminous efficiency, enabling color purity to be excellent and prolonging a service life.

The invention discloses a photoelectric device, a preparation method thereof and a display device, the photoelectric device comprises an anode, a luminescent layer, an electronic function layer and a cathode which are stacked in sequence, the electronic function layer comprises N-type metal oxide particles and a dopant, and the electronegativity of the dopant is 2.50-5.00. The photoelectric device disclosed by the invention is relatively long in service life.

This invention discloses a method for preparing Co-P3 / S-TiO2 nanowire array materials, along with their products and applications. Through a hydrothermal-etching-phosphating method, Co single atoms coordinated with P were successfully anchored on the surface of a TiO2 nanowire array rich in step defects, resulting in the Co-P3 / S-TiO2 nanowire array material. Under the dual regulation of the special step structure and the suitable electronegativity of P, the Co metal atom becomes an electron-rich center, exhibiting superior adsorption capacity and a unique coordination environment, thus possessing excellent electrocatalytic hydrogen evolution performance. The preparation process is simple, and the raw materials are inexpensive. This invention provides inspiration for the design and synthesis of single-atom catalysts and their application in the field of electrocatalytic water electrolysis.

The invention relates to the technical field of ocean energy sensing equipment, in particular to a self-powered sensor and method for wave height monitoring. The self-energized sensor comprises a first shell with two open ends, a sealed second shell and a plurality of power generation units. The upper end of the first shell is fixedly installed on one side of the second shell, and the lower end of the first shell is bent outwards. The multiple power generation units are sequentially arranged in the axis direction of the second shell. The power generation unit comprises a rotating part, a first substrate and a second substrate, a dielectric layer and an electrode layer which are different in electronegativity are arranged on the two opposite side walls of the first substrate and the second substrate, the rotating part rotates to drive the second substrate to rotate relative to the first substrate, and then the dielectric layer and the electrode layer are driven to move relatively to generate current. The self-energized sensor provided by the invention not only can monitor the wave height based on the electric signal output by the power generation unit, but also can supply power to the sensor by the generated electric signal, so that the self-energized sensor provided by the scheme can stably run for a long time.

The embodiment of the invention discloses a physical embedded closed-loop high-entropy alloy laser additive manufacturing performance oriented intelligent design method. By constructing a high-entropy alloy mechanical property database, training a multi-algorithm collaborative integrated agent model and fusing thermodynamic and physical laws and a multi-target Bayesian optimization algorithm, combined reverse design of high-entropy alloy components and LDED process parameters is realized, the applicability, accuracy and robustness of performance prediction are improved, and the performance prediction efficiency is improved. The research and development period of new materials is shortened, and the test cost is reduced. By embedding physical constraints such as valence electron concentration, mixing enthalpy, mixing entropy, electronegativity difference and atomic size difference and comprehensively considering the influence of process factors such as laser power, scanning speed and powder feeding rate, an optimal Pareto component-process scheme is obtained under the support of finite element simulation closed-loop verification and an incremental learning mechanism; and the tensile strength and the yield strength of the high-entropy alloy under different conditions are accurately predicted and reflected.

The present application relates to a kind of covalent organic framework film preparation based on biomimetic mineralization strategy and its application in ion separation.In the process of monovalent ion separation, methoxy forms stable interaction with monovalent ion through its unique coordination characteristics and electronegativity, significantly improves the transmission rate of monovalent ion. At the same time, the introduction of functionalized methoxy can also effectively inhibit the passage of divalent ion, so as to realize efficient ion separation. Biomimetic mineralization strategy can significantly improve the mechanical strength and chemical stability of COF membrane by compounding organic polymer with COF. Compared with traditional separation membrane, the biomimetic mineralized COF membrane provided by the present application exhibits higher separation efficiency, more excellent selectivity and longer service life, and is suitable for efficient extraction of lithium and other monovalent ion resources, battery material preparation and ion separation application in related industrial production process. The functionalized methoxy COF membrane material of the present application has the advantages of adjustable structure, simple preparation and potential for large-scale production.

The invention belongs to the technical field of silicon carbide flat membranes, and particularly provides a high-electronegativity silicon carbide flat membrane material and a preparation method thereof. The invention relates to a preparation method of a high-electronegativity silicon carbide flat sheet membrane material, which comprises the following steps: mixing phytic acid and an organic solvent to prepare a precursor solution, impregnating a silicon carbide flat sheet membrane substrate with the precursor solution, carrying out a reaction, and carrying out stage heat treatment. The high-electronegativity silicon carbide flat sheet membrane material prepared by the method has high electronegativity in a wide pH range, the water permeation flux is high, and after multiple humic acid pollution-cleaning cycles, the flux attenuation is less, and the anti-pollution performance is good. When silica sol is added into the precursor solution, the electronegativity of the silicon carbide flat sheet membrane material can be further improved, so that the anti-pollution performance of the high-electronegativity silicon carbide flat sheet membrane material is further improved.

The invention discloses a method for evaluating thermal decomposition behavior characteristics and risk degrees of same-type derivatives, which comprises the following steps of: firstly, carrying out a DSC (differential scanning calorimetry) test on the same-type derivatives of a certain substance to obtain initial thermodynamic data; analyzing an exothermic peak curve of the DSC, obtaining an after-treatment curve of exothermic quantity, conversion rate-temperature and reaction rate-temperature, and calculating thermal decomposition characteristic parameters including activation energy, pre-exponential factors, a decomposition mechanism function model, comprehensive thermal decomposition characteristic parameters and self-accelerated decomposition temperature; further quantitatively characterizing microstructure characteristics of group types, group positions and group volumes by using electronegativity, Hammett constants and group topological volumes, constructing a relation model between pyrolysis characteristic parameters and microscopic parameters by using a correlation coefficient, regression analysis and a judgment matrix, and determining the molecular structure of the same type of derivative according to a given molecular structure of the same type of derivative. Calculating corresponding pyrolysis characteristic parameters; and according to the property and process of the chemical reaction, establishing a pyrolysis risk degree calculation model of the same type of derivatives, and quantitatively evaluating the risk degree.

The present invention provides a sealing layer for semiconductor devices, particularly semiconductor devices containing chalcogenide materials, and a method for manufacturing the same. [Solution] The method for manufacturing a semiconductor device includes providing a substrate 18 having an exposed surface containing a chalcogenide material, and forming low-χ metal oxide layers 46A and 52A on the chalcogenide material by periodically exposing the substrate to an oxygen precursor containing a low-electronegativity (low-χ) metal precursor and O2. The electronegativity of the low-χ metal of the metal precursor is 1.6 or less.

Disclosed is a semiconductor device. The semiconductor device includes a lower electrode disposed on a substrate; a first lower interfacial film disposed on the lower electrode; a dielectric film disposed on the first lower interfacial film; a first upper interfacial film disposed on the dielectric film; and an upper electrode disposed on the first upper interfacial film, wherein each of the first lower interfacial film and the first upper interfacial film is a conductive single film, and the first lower interfacial film and the first upper interfacial film include the same metal element, wherein electronegativity of the metal element included in each of the first lower interfacial film and the first upper interfacial film is greater than electronegativity of a metal element included in the dielectric film.

The invention relates to a solid sulfur positive electrode catalytic material, a preparation method and an application, the solid sulfur positive electrode catalytic material comprises a carrier, a first transition metal atom and a second transition metal atom, the first transition metal atom and the second transition metal atom are loaded on the carrier, the carrier is a nitrogen-doped carbon material, and the electronegativity difference value delta EN of the first transition metal atom and the second transition metal atom is more than or equal to 0.01 and less than or equal to 0.5. The solid sulfur positive electrode catalytic material disclosed by the invention can generate a dynamic electron buffer effect in a sulfur conversion reaction process of an all-solid-state battery, and is beneficial to adjusting the charge state of a metal center through reversible electron migration between diatoms during charging and discharging, so that the excessive oxidation or reduction of active sites is inhibited; the structural stability and the valence reversibility of the material in long-term circulation are improved. Meanwhile, the synergistic effect of double atoms can enhance the electron interaction with sulfur substances, so that the solid-solid interface reaction energy barrier can be reduced, and the sulfur conversion reaction kinetics can be improved.

The present disclosure relates to a titanium-organic framework photocatalyst for adsorption and decomposition of a volatile organic compound, a method for preparing the same and a method for removing a volatile organic compound using a titanium-organic framework photocatalyst. More specifically, a hierarchical pore structure can be formed and a pore size can be controlled by preparing a titanium-organic framework photocatalyst by coordination bonding a titanium precursor to a mixture of two carboxylic acid compounds having different electronegativity, as organic linkers, at an optimized ratio. The titanium-organic framework photocatalyst exhibits improved efficiency of adsorbing and decomposing a volatile organic compound (VOC) and can improve the photocatalytic degradation rate of the volatile organic compound (VOC).

This invention relates to a method for highly selective adsorption of low partial pressure CO2 using an ultraporous azole ionic liquid material, belonging to the field of gas separation and purification technology. The ultraporous ionic liquid material is an ionic adsorbent with selective CO2 adsorption sites and an ultraporous pore distribution, formed by modifying the surface and pore structure of a porous support with multi-site azole ionic liquids. This method is simple to synthesize and easy to scale up. Furthermore, due to the strong chemical interaction between the electronegative sites on the ionic liquid anions and CO2, as well as the ultraporous effect, it synergistically enhances the efficient capture and separation of low partial pressure CO2. Simultaneously, CO2 can be completely desorbed by heating or depressurization. The regenerated ultraporous ionic liquid material is recyclable and exhibits stable performance. This method has advantages such as high capacity and selectivity for low partial pressure CO2, good stability, and recyclability, and has great potential for application in CO2 capture and purification separation.

The application discloses a kind of saturation magnetic induction prediction of iron-based amorphous alloy, component design and super-high saturation magnetic induction iron-based amorphous / nanocrystalline alloy. Through machine learning model XGBoost combined with SHAP analysis reveals the core role of ferromagnetic element content, alloy mixing enthalpy and electronegativity difference, while maintaining high ferromagnetic element content, without deteriorating amorphous forming ability, after annealing can obtain very low coercivity, realize high saturation magnetic induction and amorphous forming ability, the synergistic optimization of coercivity. The parameters used in the composition design criteria proposed by the application do not require experimental data and can be calculated directly from the alloy composition. Combined with machine learning model, high-performance components can be quickly screened, significantly reducing the development cycle and cost of traditional trial-and-error method, providing systematic theoretical guidance for the development of high-performance soft magnetic materials and improving industrial feasibility.

The invention discloses a preparation method of a pure iodine broadband gap perovskite solar cell based on difluorophthalonitrile passivation, and relates to the technical field of solar cells. According to the cell, the surface of perovskite is treated through difluorophthalonitrile, on one hand, fluorine atoms and cyano groups have strong electronegativity, so that the center of a benzene ring is positively charged, charged iodine defects can be attracted through anion-pi interaction, further diffusion of the iodine defects is prevented, and ion migration is inhibited; on the other hand, fluorine atoms can interact with hydrogen atoms on organic cations in perovskite through hydrogen bonds, organic components are stabilized, and volatilization or decomposition of the organic components is inhibited. And fluorine can also form a hydrophobic protection layer on the surface of the perovskite, so that the environmental stability of the perovskite cell is improved. On the basis, the surface and interface defects of the perovskite are obviously reduced, and ion migration and non-radiative recombination are inhibited, so that the photoelectric conversion efficiency of the perovskite solar cell is improved, and the hysteresis effect of the device is reduced.

The invention provides a perovskite formation energy prediction method based on a graph neural network and a function subgraph. The method comprises the following steps: firstly, aiming at a perovskite crystal structure, segmenting a crystal diagram into an octahedral sub-diagram taking a B-site atom as a center and a coordination polyhedral sub-diagram taking an A-site atom as a center according to a functional unit for representing a key local coordination environment; secondly, a local dynamic coordinate system is introduced into the functional sub-graph, the relative position between a central atom and a neighborhood atom is projected into a geometric description quantity insensitive to global translation and rotation, and the geometric description quantity, the key length, the key angle and coordination distortion related characteristics are jointly used as the input of a graph neural network; and finally, in a message passing process, fusing edge weight priori of distance and element electronegativity, aggregating information in the sub-graph through an attention mechanism, and finally realizing prediction of perovskite material formation energy. The method is suitable for high-throughput screening and synthesizability evaluation of a large-scale perovskite material library.

The present application relates to the field of new materials, and aims to provide a preparation method of high-entropy pyrochlore type catalytic material with diatom shell morphology.The method comprises the following steps: immersing diatomite in a mixed solvent of triethanolamine and alcohol, adding a plurality of metal precursor solutions and L-lysine and ascorbic acid, uniformly mixing, then adding hydrogen peroxide and NaOH in sequence;after hydrothermal reaction, adding gluconic acid, and performing hydrothermal reaction again;burning the solid product to obtain the catalytic material.The present application adjusts the metal ion complexes in the precursor solution to make the dissociation degrees of the metal ions similar, so that the metal ions with large electronegativity difference have good cooperativity in the subsequent nucleation and crystallization process, thereby improving the uniformity of the final product and reducing the formation temperature of the pyrochlore phase;the formation temperature of the pyrochlore is reduced through secondary hydrothermal reconstruction crystallization;therefore, the present application can save the production cost of the catalytic material compared with the prior art.

The present disclosure provides a modified positive electrode material and a preparation method and application thereof, the preparation method comprising the following steps: (1) mixing tungsten disulfide with a tannic acid solution, performing ultrasonic treatment, and then separating to obtain a TA-WS2 nanosheet solution; (2) mixing a positive electrode material with a solvent after performing corona discharge treatment, to obtain a positive electrode material solution, mixing the positive electrode material solution with the TA-WS2 nanosheet solution, and obtaining a mixed solution; (3) performing solid-liquid separation treatment on the mixed solution, and performing calcination treatment on the obtained solid material, to obtain the modified positive electrode material. The present disclosure prepares nanoparticles with strong electronegativity, simultaneously charges the positive electrode material particles, utilizes the interaction force between the strong electronegativity and electrons, makes the nanoparticles with strong electronegativity uniformly and spontaneously loaded on the charged particles, and finally forms a uniform coating layer on the surface of the positive electrode material through calcination.

The invention discloses a high-entropy transition metal sulfide positive electrode material and a preparation method and application thereof. The chemical general formula of the positive electrode material is A6TMS4, and in the formula, A represents an alkali metal element and comprises at least one of Li, Na and K; tM represents a high-entropy transition metal combination and comprises 5 to 8 of Mg, Al, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Ru, Sn, Sb, Te, Ta and W; wherein the transition metals comprise one to four of transition metals V, Cr, Nb, Mo, Ta, W and Ti with high electronegativity and low energy level d orbits. The prepared positive electrode shows high specific capacity, a high voltage platform and excellent cycling stability in a lithium / sodium / potassium battery, and has a wide application prospect.