712 results about "Cell material" patented technology

The invention provides a three-junction quantum well solar cell epitaxial structure and a manufacturing method thereof, the three-junction quantum well solar cell epitaxial structure comprises a substrate serving as a first sub-cell, a first tunnel junction, a second sub-cell, a second tunnel junction and a third sub-cell which are sequentially stacked from bottom to top, and the three sub-cells are connected through the tunnel junctions; wherein the first sub-cell is a Ge cell, the second sub-cell is an InGaAs cell, the third sub-cell is a GaInP / AlGaInP quantum well cell, the third sub-cell comprises a (Al < x > 1 < Ga < 1-x > 1 < y > 1 < In < 1-y > 1 < P) back field layer, a quantum well base region, a (Al < x > 4 < Ga < 1-x > 4 < y > 4 < In < 1-y > 4 < P) emitter region and an Al < x > 5 < In < 1-y > 5 window layer which are sequentially stacked from bottom to top, the quantum well base region is composed of a Ga < x > 2 < In < 1-x > 2 layer and a (Al < x > 3 < Ga < 1-x > 3 < y > 3 < In < 1 x is larger than or equal to 0.5 and smaller than or equal to 0.8, y is larger than or equal to 0.5 and smaller than or equal to 0.8, y is equal to 0.5, the GaInP / AlGaInP quantum well structure is used for replacing a traditional AlGaInP material to serve as a top cell material, the open-circuit voltage of the solar cell is increased, and meanwhile the defect that the short-circuit current of the AlGaInP / GaAs / Ge solar cell is insufficient is overcome.

The present invention belongs to the technical field of battery materials, and particularly relates to a composite phosphate-based positive electrode material, and a preparation method therefor and the use thereof. The composite phosphate-based positive electrode material comprises a phosphate-based active core, wherein the outer surface of the phosphate-based active core is sequentially coated with a carbon coating layer, a nitrogen-doped carbon coating layer and a nitrogen-phosphorus co-doped carbon coating layer from inside to outside, wherein the carbon coating layer can improve the electronic and ionic conductivity of the composite positive electrode material, and optimize the particle size and morphology of the composite positive electrode material. The nitrogen-doped carbon coating layer improves the consistency and integrity of coating; and nitrogen-atom-doped carbon further enhances the electronic conductivity and lithium-ion diffusion of the carbon coating layer. Electron-rich clouds of P and N atoms in the nitrogen-phosphorus co-doped carbon coating layer can provide a rich conductive network, mutual contact is formed among different particles to form a series network, thus promoting the interfacial electron transport of the composite material during a charging and discharging process, and improving the cycling and rate performance of the composite phosphate-based positive electrode material during the charging and discharging process.

The invention provides a deviation rectification prediction method and device for the tail of a battery core material head and electronic equipment. The deviation rectification prediction method comprises the steps that the current initial offset of a to-be-predicted position on a material line of the tail of a target battery core head relative to a preset reference position before winding is started is collected; obtaining a historical initial offset of a to-be-predicted position on a historical battery cell stock line relative to a preset reference position before winding is started, a corresponding historical deviation correction amount after winding is finished and an actual offset of the historical stock line; determining a target deviation correction influence coefficient according to the current initial offset and the historical initial offset; and the target deviation correction influence coefficient acts on the historical deviation correction amount and the actual offset of the historical stockline, and the predicted offset of the to-be-predicted position on the target stockline is determined. The stockline deviation value can be obtained through a prediction algorithm before winding is started, the deviation correction mechanism is driven to complete prediction compensation in advance, error accumulation caused by lagging response afterwards is avoided, and interference caused by error drift and inaccurate calibration of equipment is eliminated.

The invention provides a polymer electrolyte membrane and a preparation method and application thereof, and relates to the technical field of battery materials, the preparation method of the polymer electrolyte membrane comprises the following steps: dissolving a polymer, a metal organic acid salt, a plasticizer and a lithium salt in an organic solvent to obtain a polymer electrolyte slurry; coating a template with the polymer electrolyte slurry, performing standing treatment under the action of an external magnetic field, and performing vacuum drying treatment to obtain a polymer electrolyte membrane; wherein the direction of the external magnetic field is perpendicular to the template. The polymer electrolyte membrane provided by the invention is used for modifying lithium metal, so that not only can the ion transmission performance of a solid electrolyte / lithium metal interface be improved, but also the interface impedance of the solid electrolyte / lithium metal interface can be reduced.

The application provides a negative electrode material and a preparation method thereof and a secondary battery, and relates to the technical field of battery materials. The negative electrode material comprises a silicon-based inner core and a carbon layer coated on the surface of the silicon-based inner core, wherein the silicon-based inner core comprises nanosilicon and a silicate containing a metal element M; the negative electrode material is subjected to section analysis and energy spectrum analysis, and meets the conditions of k1<=10, k2<=5 and 0.1 The preparation method of the negative electrode material comprises the following steps: heating and evaporating pre-disproportionated silicon monoxide material and M metal source material to obtain silicon monoxide gas and metal source gas; mixing and condensing the two kinds of gas to obtain an inner core material; and performing carbon coating treatment to obtain the negative electrode material. In the negative electrode material prepared by the application, the metal silicate effectively separates the nanosilicon domain and the silicon oxide domain, and is uniformly distributed, and the negative electrode material has high initial efficiency and excellent cycle performance.

The invention discloses a polymer electrolyte composite material for a high-temperature-resistant solid-state battery and a preparation method of the polymer electrolyte composite material, and belongs to the technical field of solid-state battery materials. The preparation method comprises the following steps: preparation of key functional components, preparation of a precursor solution, dispersion and compounding of the filler, film casting and heat treatment, and post-treatment. A dynamic thioether bond is introduced into a main chain to construct an oxygen-sulfur synergistic coordination network, and a multi-component interface chemical bonding and gradient curing process is combined, so that the problems that the ionic conductivity and the mechanical strength of the traditional polymer electrolyte cannot be considered at a high temperature, the filler is easy to agglomerate, the membrane has many defects and the like are solved; the obtained material still keeps high ionic conductivity and excellent mechanical stability at 150 DEG C, has a wide electrochemical window, and is suitable for high-safety and high-energy-density solid-state batteries.

The invention discloses a perovskite solar cell based on a cross-linked interface passivation layer, and relates to the technical field of photovoltaic cell materials. The perovskite solar cell sequentially comprises a transparent conductive substrate, an electron transport layer, a perovskite light absorption layer, a crosslinking interface passivation layer, a hole transport layer and a metal electrode from bottom to top, and the cross-linked interface passivation layer is made of a 4-[10-(4-{(1, 2, 2-trifluorovinyl) oxy} phenyl)-10H-phenoxazine-2-yl] phenylphosphonic acid material. The cross-linked interface passivation layer can significantly improve the photovoltaic performance and stability, the intrinsic stability of the device is greatly enhanced by the cross-linked network, and in a double-85 aging test of 85 DEG C / 85% RH, the time required for attenuating the efficiency of the device to 80% of an initial value can exceed 1000 hours.

The present description belongs to the technical field of battery materials. Disclosed are a single-crystal ternary positive electrode material, a preparation method therefor, a positive electrode sheet and a battery. The apparent factor of the single-crystal ternary positive electrode material is [Formula 1], wherein 1.1≤Z≤3, x=D90 / D10, 2≤x≤5; S(D90) is the number averaged circularity, the total number of target particles is n, and the number averaged circularity is defined as the sum of circularity values of all of the target particles divided by n. The area and circumference corresponding to a two-dimensional projection image of a single target particle are respectively S1 and l1, the circumference of a circle having the area S1 is l2}, and the circularity = l2 / l1. The D10' is the corresponding particle size of a material obtained by compacting the single-crystal ternary positive electrode material at 200 MPa, D10 does not exceed 2.4 μm, and D10' does not exceed 2.3 μm. The single-crystal ternary positive electrode material has smooth surfaces and rounded edges, which are beneficial for fabricating batteries having excellent electrochemical properties.

Apparatus and associated methods relate to evaluating impurity content in battery materials. In an illustrative example, a battery material impurity assessment system (BMIAS) may include a slurry mixing system and an impurity extraction system (IES). The slurry mixing system, for example, may include a motor configured to rotate a vertical axis of a slurry container. For example, the motor may pause a movement of the slurry container when the vertical axis is rotated at a predetermined angle. For example, the IES may include a translatable magnetic mass (TMM) enclosed within a sheath. For example, by operating a position of the TMM, the IES may release non-target impurity and retain target substances. In some implementations, the target substance may be ionized by an acid treatment solution rapidly without direct heating. In some implementations, the target substances may be dispersed on a conductive filter to be directly used in subsequent analysis. Various embodiments may advantageously rapid high precision and rapid impurity testing for battery manufacturing.

The invention relates to the field of battery materials, in particular to a binder material, a preparation method, a positive electrode material and a battery. The preparation method provided by the invention comprises the following steps: mixing and grinding a raw material compound and an additive into mixed powder; heating the mixed powder to a melting temperature in a protective gas atmosphere and carrying out a reaction to obtain a molten mass; the molten mass is cooled based on the rapid quenching technology, a nanocrystalline area and an amorphous area are formed in the molten mass cooling process, and a composite structure thin strip is obtained after cooling; forming a lithium-rich layer on at least part of the surface of the composite structure particle; providing a carbon source, mixing the composite structure particles forming the lithium-rich layer with the carbon source, and then carrying out heating treatment to form a carbon layer wrapping the surfaces of the composite structure particles and the lithium-rich layer; and epitaxially growing a carbon nanotube layer on the outer surface of the carbon layer, and obtaining the binder material after the epitaxial growth is completed. A novel binder material which has good ion / electron conductivity, mechanical properties adapting to volume change and suitable processing characteristics is found.

The invention provides an iron-selenium double-monatomic nitrogen-doped carbon-based composite material and a preparation method and application thereof, the composite material comprises an N-doped carbon matrix, and Fe monatomic and Se monatomic distributed on the N-doped carbon matrix, and the Fe monatomic and the Se monatomic are anchored on the N-doped carbon matrix. The method comprises the following steps: preparing a Fe / Se / N-doped carbon-based precursor, and carrying out high-temperature carbonization on the Fe / Se / N-doped carbon-based precursor to obtain the iron-selenium double-monatomic nitrogen-doped carbon-based composite material. The preparation method overcomes the technical bottlenecks of low specific capacity, poor cycling stability, poor rate capability, complex preparation process, no environmental protection and the like of the existing sodium-ion battery negative electrode material. The composite material has high reversible capacity, excellent cycle stability and good rate capability, comprehensively improves the comprehensive electrochemical performance of the sodium-ion battery, provides a competitive high-performance material solution for the field of sodium-ion batteries, and practically meets the urgent demand of the current new energy field on high-performance battery materials.

The invention discloses a preparation method and application of a ternary pole piece with a base coat of lithium iron phosphate, and relates to the technical field of battery materials. The lithium iron phosphate slurry and the ternary material slurry are coated on the surface of the positive electrode base foil, so that the safety and the electrochemical performance of the pole piece are improved. The lithium iron phosphate and the ternary material are used as active materials, an active substance layer is formed on the surface of the positive electrode base foil, the lithium iron phosphate has a stable olivine structure, the structure is not easy to collapse and decompose at a high temperature, the lithium iron phosphate is coated on the surface of the ternary material, a protective layer with high thermal stability is constructed, heat is prevented from being quickly transferred into the ternary material, and the thermal stability of the ternary material is improved. The structure change of the ternary material at high temperature is delayed; the ternary material is heated to expand in the charging and discharging process, the lithium iron phosphate priming coat has certain elasticity and buffering performance, stress generated in the thermal expansion process of the ternary material can be absorbed and dispersed, and structural damage caused by thermal expansion is reduced.

The invention discloses a high-temperature-resistant benzimidazolone polyamide imide battery binder as well as a preparation method and application thereof, and belongs to the technical field of battery materials. The high-temperature-resistant benzimidazolone polyamideimide battery binder with uniformly distributed amide segments and imide segments is prepared through a method for activating aromatic diamine on one side of trimethylchlorosilane and changing the activity of amino groups on the two sides, the comprehensive performance of the high-temperature-resistant benzimidazolone polyamideimide battery binder is excellent, the defects that a traditional binder is poor in heat resistance and insufficient in chemical stability are overcome, and the service life of the high-temperature-resistant benzimidazolone polyamideimide battery binder is prolonged. The introduction of high-polarity groups can improve the wettability and ion transmission capability of the electrolyte, improve the solubility of the electrolyte so as to facilitate electrode forming, and can also form strong chemical bonds or physical adsorption with positive and negative inorganic active materials during application, thereby reducing the structural damage in the cycle process and improving the electrochemical performance of the battery. The lithium ion battery electrode can keep a stable structure in a high-temperature environment, the thermal runaway risk caused by high temperature is remarkably reduced, and the application requirements of the lithium ion battery in a fast charging or high-temperature energy storage scene are well met.

The invention relates to the technical field of battery materials, and discloses a modified diaphragm, a preparation method thereof and a negative-electrode-free sodium metal battery. The modified diaphragm comprises a base membrane and a first functional layer arranged on one side of the base membrane; the first functional layer comprises an isotropic elastic matrix and inorganic nanoparticles distributed in the elastic matrix, and the mass ratio of the inorganic nanoparticles to the elastic matrix is (150-200): (100-125). The modified diaphragm can uniformly buffer the huge expansive force of the non-cathode sodium battery, so that the permeation of sodium metal into pores of the diaphragm is inhibited, and the occurrence of short circuit of the battery is avoided.

The invention provides a reverse generation type design method and system of a battery material based on a large language model. The method comprises the following steps: carrying out serialized representation on a crystal structure of a lithium ion battery material; constructing a material basic model, and training the material basic model based on the serialized representation result to obtain a trained material basic model; a multi-dimensional attribute virtual KV attention mechanism is introduced into the material basic model, and a property conditional generation model is obtained; accessing a property prediction head network to the material basic model, and performing supervised training on the material basic model to obtain a material property prediction model; and performing reinforcement learning training on the property conditional generation model to obtain an optimized property conditional generation model, and generating a crystal structure candidate set based on the optimized property conditional generation model. By means of the method, efficient, controllable and diversified generation of the hundred-atomic-scale complex crystal structure is achieved, and the precision and practicability of material reverse design are remarkably improved.

The invention discloses a nitrogen-doped multilayer rose-shaped hard carbon material as well as a preparation method and application thereof, and belongs to the technical field of battery materials. A precursor of the nitrogen-doped multi-layer rose-shaped hard carbon material is prepared by adopting a solid-liquid self-assembly method, and then the precursor is calcined, so that the final nitrogen-doped multi-layer rose-shaped hard carbon material can be obtained. The prepared nitrogen-doped porous carbon material has more mesopores and defects, is unique in structure and uniform in shape, and can be used as a sodium ion battery negative electrode material. The nitrogen-doped multilayer rose-shaped hard carbon material prepared by the invention is a material with immunity to environmental influence, belongs to a mesoporous carbon material with stable chemical components and controllable shape in the porous field, has the advantages of regular structure, relatively good stability and the like, and has the properties of high capacity, good rate and the like as a negative electrode material.

The invention provides an AI algorithm for automatically generating a solid-state battery material formula and application, and relates to a solid-state battery material formula generation method, device and equipment, a medium and a product, and relates to the technical field of battery materials. The method comprises the following steps: generating a plurality of initial parameter groups based on a candidate particle size set and a candidate particle number set; obtaining a particle accumulation constraint condition; inputting the plurality of initial parameter groups and the particle accumulation constraint conditions into a constraint layer to obtain a plurality of constrained parameter groups conforming to the particle accumulation constraint conditions; inputting the constrained parameter groups into a battery performance parameter prediction model to obtain battery performance parameters corresponding to the constrained parameter groups; and based on the battery performance parameters corresponding to each constrained parameter group, determining a target parameter group in each constrained parameter group, and generating a solid-state battery positive electrode formula based on the target parameter group. The embodiment of the invention can optimize the positive electrode material system and improve the overall performance of the battery.

The invention relates to the technical field of battery material treatment, in particular to a lithium battery material efficient grinding process based on multi-section temperature control treatment, a lithium battery material to be ground is poured into grinding equipment, preheating is performed according to the characteristics of the material, and the temperature setting needs to ensure that the material starts to be preliminarily softened at the temperature but does not have property change; then the grinding device is started for graded grinding, material particles are forced to be preliminarily refined through preliminary grinding, the corresponding temperature is set, and after the first-stage grinding reaches the preset time or the material particles are refined to a certain degree; the material is poured into second-stage grinding equipment, temperature adjustment is conducted, and the second-stage grinding temperature is increased compared with the first-stage grinding temperature; according to the invention, the three stages of pretreatment, coarse grinding and fine grinding are linked, and multi-stage temperature control and dynamic grinding are combined, so that efficient and low-damage grinding of the lithium battery material is realized, and the problem of low grinding efficiency caused by uneven initial temperature of the material and serious agglomeration in traditional grinding is solved.

The invention discloses a porous carbon material, a preparation method thereof and a silicon-carbon composite material, and relates to the technical field of battery materials. The method disclosed by the invention is simple in process and suitable for large-scale industrial production, the prepared porous carbon material has optimized pore size distribution and pore structure, more silane adsorption sites and stronger adsorption capacity, can accommodate more silicon and has excellent conductivity, and when the porous carbon material is used for preparing a silicon-carbon composite material, the silicon-carbon composite material can be used for preparing the silicon-carbon composite material. And the capacity, the charge-discharge efficiency, the rate capability and the cycle performance of the battery can be effectively improved.

The invention discloses a multi-cavity mesoporous carbon nanosphere battery material and a preparation method and application thereof, and belongs to the technical field of ion batteries, the method comprises the following steps: mixing a cosolvent and a surfactant, and stirring until the cosolvent and the surfactant are dissolved; adding a carbon source monomer, and stirring until dissolving; adding a pore-foaming agent, and stirring to form a suspension; and finally, adding a hydrogen bond catalyst, and after the stirring reaction is finished, washing, freeze-drying and carbonizing to obtain the multi-cavity mesoporous carbon nanosphere battery material. The problems of poor micelle stability and low repeatability of a traditional soft template method are solved through cooperative regulation and control of catalysis of the hydrogen bond catalyst and precise assembly time. By simply controlling the reaction time, a product with the multi-cavity structure reaching 65.3%-92.5% is stably and repeatedly prepared and far exceeds 31.7% of that of a non-catalytic system, and precise customization of the microstructure of the material is achieved. The multi-cavity structure can better buffer the volume change caused by sodium ion intercalation / deintercalation in the charging and discharging process, and is beneficial to maintaining the structural integrity of the electrode material.

The invention belongs to the technical field of battery materials, and provides a doped sulfide solid electrolyte and a preparation method and application thereof, the doped sulfide solid electrolyte comprises an oxide containing a metal element A as a dopant; the atomic valence electron layer of A is fully filled with soft acid elements; in the doped sulfide solid electrolyte, the valence state of A does not exceed + 3. By doping the oxide of specific A, the soft acid element A is more easily and preferentially combined with the soft alkali S < 2-> to replace P and form an A-S covalent bond with polarity higher than that of P-S, so that the air stability of the sulfide solid electrolyte is improved, and the hydrolysis of the sulfide electrolyte is effectively inhibited; meanwhile, the specific electron arrangement structure of the metal element A is fully filled with a valence electron layer, the stability is high, and the oxidation resistance of the sulfide solid electrolyte can be effectively improved. And A is in a relatively low valence state in the doped sulfide solid electrolyte, so that the influence of a high-valence metal doped element is avoided.

The invention discloses a composite pole piece as well as a preparation method and application thereof, and belongs to the technical field of battery materials. The composite pole piece comprises a current collector, an active material layer is arranged on the surface of the current collector, and a low-voltage platform active area and a high-voltage platform active area are arranged in the active material layer at the same time; a micro-crystal lattice formed by a functional additive is arranged between the low-voltage platform active region and the current collector; the functional additive comprises an electric polymer. The low-voltage platform active area and the high-voltage platform active area are arranged on the same current collector, so that the advantages of different active materials can be concentrated on the same pole piece, and the performance advantages of the active materials can be fully exerted; when the battery is in an overcharge environment, the micro-crystal dot matrix arranged in the composite pole piece can directly absorb, consume and convert overcharge current on the current collector, and quickly responds to and participates in overcharge protection of the material. The battery with the composite pole piece can have relatively high battery energy density and rate capability, relatively long cycle life and relatively good safety.

The invention belongs to the field of new energy NCM ternary precursors, and particularly relates to a preparation method of a doped and (or) coated ternary precursor. A continuous and intermittent dynamic switching process is created for the first time, main particles are generated through continuous reaction, and after the particle size reaches a preset value, an intermittent process mode is selectively switched for precise coating; the double reaction kettles are linked, the first reaction kettle is used for continuous doping reaction, and the second reaction kettle is used for selective intermittent coating, so that production of products of multiple specifications is supported while the productivity is improved. The method solves the technical bottlenecks of narrow particle size distribution, non-uniform coating and limited productivity in the traditional process, realizes effective preparation of a wide-distribution doped type or doped coating type precursor, remarkably reduces the production cost, and is suitable for the field of consumer electronic battery materials.

A plaque detection method and apparatus wherein at least one processor is programmed to receive above focus images to detect the presence of live cells without detecting the lysed cell materials, receive below focus images wherein virtual dark regions exist which are similar to cell shadows as seeds in a segmentation process and use contours around each resulting shape to obtain a subset that are more likely to be part of the cell population to define a cell map. A distance map is created in which each pixel value is the distance of that pixel from the nearest pixel of the cell map and the distance map is thresholded to create a first image of the places which are relatively far from the cells a second image with a smaller distance threshold to get an image that mimics the edges of the cells.

The embodiment of the invention provides an automatic identification method for magnetic foreign matters of a battery material and application of a control device, and belongs to the technical field of magnetic metal detection and identification. The method comprises the following steps: setting preset detection parameters, detecting a battery material according to the preset detection parameters, and obtaining magnetic field data, eddy current data and optical data of the battery material; respectively determining corresponding magnetic field characteristic data, eddy current characteristic data and optical characteristic data according to the magnetic field data, the eddy current data and the optical data, inputting the magnetic field characteristic data, the eddy current characteristic data and the optical characteristic data into a fusion model, and obtaining foreign matter information through the fusion model; and determining a mapped first magnetic separation parameter according to the foreign matter information, and executing corresponding magnetic separation operation on the battery material according to the first magnetic separation parameter. The embodiment of the invention aims to realize on-line detection and separation of the magnetic foreign matters and improve the accuracy of magnetic separation of the battery material.

The invention belongs to the technical field of battery materials, and particularly relates to a high-entropy alloy coated ternary material and a preparation method and application thereof. The invention provides a preparation method of a high-entropy alloy coated ternary material, which comprises the following steps: mixing and calcining a high-entropy alloy and a ternary material to obtain the high-entropy alloy coated ternary material, the high-entropy alloy comprises Mo, Co, Ni, Sn and Al elements. The high-entropy alloy coated ternary material provided by the invention has excellent structural stability, so that the cycle performance and high-temperature performance of the material are improved.

The utility model relates to the technical field of material conveying, in particular to a pneumatic conveying pipeline for new energy battery materials, which is characterized in that fixed rings are distributed in a pipe body at equal intervals, rotating rings are rotatably arranged in the fixed rings through sealing bearings, bevel gear rings are fixedly sleeved on the rotating rings, and the bevel gear rings are movably arranged in the side walls of the fixed rings; a synchronous driving mechanism connected with the bevel gear ring is arranged on the pipe body, the flow guide rings are rotationally arranged in the pipe body through sealing shafts, the flow guide rings are fixedly arranged on the left sides of the rotating rings, the scraping plates are distributed on the right side walls of the rotating rings in an equal-fillet mode, and the right side walls of the scraping plates are connected with the flow guide rings; the blockage caused by adhesion and accumulation of materials on the inner wall of the pipeline can be avoided without knocking the pipeline, and the damage to the inner wall of the pipeline can be avoided while collision noise generated in the pipeline is avoided.

The invention provides an antimony-based chalcogenide film with (hk1) dominant orientation and a preparation method and application thereof, and belongs to the technical field of semiconductor photovoltaic materials. According to the method, the crystal orientation of the antimony-based chalcogenide film is regulated and controlled by doping PbI2 in situ under the simple solution method (water bath or hydrothermal) deposition condition, and research results show that the solution method is adopted to introduce PbI2, so that the antimony-based chalcogenide film can be remarkably induced to preferentially grow along the (hk1) direction, grain boundary scattering and inter-chain potential barriers are effectively weakened, and the crystal orientation of the antimony-based chalcogenide film is improved. The carrier longitudinal migration and collection efficiency is improved, so that the VOC loss is reduced, and the final battery performance is improved; the method provided by the invention not only provides a new thought for preparing the high-orientation antimony-based chalcogenide film, but also lays a technical foundation for design and optimization of a bottom battery material in a future laminated battery.

The invention relates to the technical field of battery materials, in particular to a Br-doped Y / Zr-based sulfide solid electrolyte and a preparation method and application thereof.The chemical formula of the Br-doped Y / Zr-based sulfide solid electrolyte is shown as the formula (I): Lia (YxZr1-x) bClcBrySd, wherein 0.5 < = (a + b) / (c + d) < = 1; gt; 0, bgt; 0, cgt; 0, dgt; 0; 0 lt; xlt; 1; 0 lt; and y < = c. According to the invention, by introducing Br <->, the lattice volume is expanded, the interstitial space in the crystal is improved, and the transmission path of Li < + > is expanded, so that the Li < + > migration energy barrier is reduced, and the conductivity of the solid electrolyte can be improved to a certain extent; a synergistic effect can be achieved through Y / Zr, so that an originally compact lattice framework is slightly expanded, and a smoother conduction path is constructed for ions Li < + >; on the other hand, crystal transformation of Zr can be inhibited through Y, the interface stability is improved, and finally the solid electrolyte has high conductivity and high interface stability.

The invention relates to the technical field of battery materials, and particularly discloses a composite material for an aqueous ammonium ion / proton hybrid battery and a preparation method and application thereof. The conductive polymer coated manganese dioxide composite material is prepared by adopting an organic-inorganic interface reaction, the preparation process is simple and easy to operate, the required raw materials are low in cost and easy to obtain, and the synthesized material is a nanoscale material and has the advantages of good dispersity, high specific surface area, good conductivity, stable structure and the like; when the material is applied to the aqueous ammonium ion / proton mixed ion battery, the obtained battery material has excellent rate capability and stable cycle life, has a high application prospect, and provides a new design idea for the existing aqueous ammonium ion / proton mixed ion battery.