42results about How to "Reduce dissolution" patented technology

This utility model discloses a modular electrolytic reaction tank for preparing high-purity metallic magnesium, belonging to the field of metallic magnesium reaction tanks. It includes a reaction tank body, with a cover plate fixedly connected to the upper surface of the body by multiple bolts. A conveying pipe is fixedly connected to the left side of the upper surface of the cover plate. A collection box is fixedly connected to the right side of the lower inner surface of the reaction tank body. A through-type collection port is opened on the upper left side of the inside of the collection box. This utility model achieves efficient and rapid separation through the unique structure of the collection box and related components. When the liquid magnesium reaches a certain thickness, the level gauge detects a signal, the electric push rod is activated, pushing the sliding plate two. Through the gas box and gas delivery hole, the sliding plate one moves the baffle one upward, opening the collection port. Liquid magnesium quickly flows into the collection box, greatly reducing the residence time of liquid magnesium in the reaction tank body, effectively reducing impurity dissolution, and improving the purity of metallic magnesium and product quality.

The invention provides an organic-inorganic hybrid solid-state polymer electrolyte coated high-nickel positive electrode material as well as a preparation method and application thereof, and relates to the technical field of all-solid-state lithium batteries. The high-nickel positive electrode material coated with the organic-inorganic hybrid solid polymer electrolyte comprises an inner core and an organic-inorganic hybrid coating layer coated on the surface of the inner core, the inner core is made of a high-nickel positive electrode material; the organic-inorganic hybrid coating layer comprises a ring-opening copolymer of maleic anhydride and 1, 3-dioxolame, and Li3PO4 nanocrystals are embedded into the ring-opening copolymer of maleic anhydride and 1, 3-dioxolame in situ. According to the invention, a flexible and compact coating layer with ionic conductivity is constructed on the surface of the high-nickel positive electrode material, so that the problems of violent interface side reaction, large interface impedance and poor cycling stability existing between the high-nickel positive electrode material and sulfide solid electrolyte are solved; therefore, the electrochemical performance of the material in a sulfide all-solid-state lithium battery is remarkably improved.

The invention discloses a lithium manganate positive electrode material, a preparation method and an applied lead-lithium battery, relates to the technical field of lithium manganate positive electrode materials, and solves the problems that the existing lithium manganate positive electrode material is poor in structure and interface stability and poor in rate and cycle performance. The positive electrode material is composed of a lithium manganate matrix and a double-layer composite coating, the matrix is prepared by taking lithium carbonate and manganous-manganic oxide as raw materials and doping magnesium hydroxide, aluminum hydroxide and titanium dioxide multi-plasma phase; the lithium manganate positive electrode material is prepared by uniformly compounding a lithium manganate matrix modified by a spinel inner layer, vinyl functionalized MOF and a polyvinylidene fluoride-hexafluoropropylene copolymer on the surface of an aluminum foil receiver through an electrospinning-electrospray synergistic process. The material is applied to the lead-lithium battery, shows excellent electrochemical performance and has good practical application value.

This disclosure relates to a negative electrode, a battery cell, a battery device, and an electrical device. The battery cell includes a negative electrode, a positive electrode, a separator, and an electrolyte. The negative electrode includes a composite current collector, which comprises a first metal layer, a second metal layer, and a polymer layer, with the polymer layer located between the first and second metal layers. The polymer layer includes a polymer matrix and an inorganic salt hydrate. The polymer matrix has multiple porous structures, and the inorganic salt hydrate is located within these porous structures. The battery cell of this disclosure can effectively reduce the severity of its thermal runaway reaction, thus reducing the occurrence of catastrophic events.

The invention discloses a lithium manganate battery and a preparation method thereof. The lithium manganate battery comprises a positive plate, a diaphragm, a negative plate and a functional diaphragm, the functional diaphragm comprises CaO2 and a multi-dimensional conductive carbon material; the functional diaphragm is arranged between the positive plate and the diaphragm, and / or the functional diaphragm is arranged between the negative plate and the diaphragm, HF in an electrolyte is consumed through alkaline compounds in the functional diaphragm, dissolution of manganese in the positive electrode is reduced, but interface impedance can be increased through an interface layer composed of the independent alkaline compounds, so that the performance of the lithium ion battery is improved, and the service life of the lithium ion battery is prolonged. Therefore, in combination with the multi-dimensional conductive material, the porous structure of the multi-dimensional conductive material can adsorb and intercept the dissolved manganese, and meanwhile, the alkaline compound material can be uniformly distributed in a conductive pore channel, so that the damage to the negative electrode is reduced, and the high-temperature cycle and high-temperature storage performance of the battery is improved.

The invention relates to the field of batteries, in particular to a thiophene compound and a preparation method thereof, an electrolyte and a battery. The structural formula of the thiophene compound is as shown in formula I, specifically, the thiophene compound containing cyano and sulfamido is obtained by carrying out electrophilic aromatic amino sulfonylation reaction on a cyano thiophene compound and an amino sulfonyl chloride compound; the electrolyte comprises a solvent, a lithium salt, an additive and the thiophene compound. The electrolyte provided by the invention comprises the thiophene compound containing the cyano group and the sulfamide group, and the thiophene compound not only can participate in film formation of a positive electrode and a negative electrode, but also can be complexed with transition metal ions dissolved out from the electrolyte, so that the high-temperature performance of the battery is synergistically improved.

The application discloses a manganese iron lithium phosphate composite positive electrode material with Mn ion self-compensation and multiple interception functions and a preparation method thereof. The manganese iron lithium phosphate composite positive electrode material is composed of a manganese iron lithium phosphate positive electrode material and functional composite film micro-powder loaded on the surface and between the particles of the manganese iron lithium phosphate positive electrode material. The functional composite film of the functional composite film micro-powder is prepared from Na-merolite powder through Mn ion exchange, grafting and copolymerization, lithiumation and PVA composite film preparation. The manganese iron lithium phosphate composite positive electrode material is prepared from the manganese iron lithium phosphate positive electrode material and the functional composite film through mixing, crushing and freeze-drying. The manganese iron lithium phosphate composite positive electrode material realizes the inhibition of the dissolution of Mn 2+ in the manganese iron lithium phosphate positive electrode material from the source, improves the ion conduction performance and the cycle stability of the manganese iron lithium phosphate positive electrode material, and has the advantages of high capacity, long cycle life, high safety and the like.

A cathode material, its preparation method, a cathode sheet, and a secondary battery are disclosed. The cathode material includes a core and a buffer layer. The core contains a first lithium manganese iron phosphate doped with a metal element. The buffer layer covers the outer surface of the core and contains a second lithium manganese iron phosphate. Along the thickness direction of the buffer layer, the iron-manganese ratio near the core is smaller than that far from the core. This cathode material can solve the problem that existing lithium manganese iron phosphate exhibits a dual-voltage plateau characteristic during charge and discharge, affecting the accuracy of charge state estimation.

The application discloses a surfactant composition and application thereof, and belongs to the technical field of cosmetics.The surfactant composition provided by the application comprises sodium lauroyl glutamate, decyl glucoside, Tween-28, a betaine surfactant, a glycolipid and mucunna pruriens polysaccharide.The surfactant composition provided by the application can greatly reduce the dissolution of intercellular lipids and natural moisturizing factors and the damage to proteins on the basis of good surface activity, does not affect the skin barrier function, has a regulating effect on the skin microecosystem, balances the skin microecosystem, does not reduce the number of beneficial bacteria in the skin microecosystem, but can help reduce the number of harmful bacteria in the skin microecosystem, thereby effectively improving the skin barrier function and keeping the skin healthy.When applied to subsequent washing and protecting products, the washing and protecting products obtained are excellent in safety.

The invention relates to the technical field of lithium ion batteries, and discloses a high-nickel ternary positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing and sintering a nickel-cobalt-manganese precursor, a lithium source, niobium salt and fused salt. According to the preparation method of the high-nickel ternary positive electrode material provided by the invention, the niobium salt and the molten salt form a liquid phase environment at a relatively low temperature, and the niobium element can efficiently enter a crystal lattice, so that uniform bulk phase doping in a real sense is realized, and the electrochemical stability and the thermal stability are improved; meanwhile, the niobium doping can ensure the rapid and uniform transmission of the lithium source, so that the lithiation is more sufficient, and the lithium-nickel mixed arrangement caused by lithium deficiency is reduced in dynamics.

This application provides a positive electrode additive and its preparation method, a positive electrode sheet, a secondary battery, and a battery pack, wherein the positive electrode additive includes a fluorohydrazone compound represented by Formula I or Formula II. In Formula I, R1, R2, and R3 are each independently selected from -H or -F, and R1, R2, and R3 are not simultaneously -H; R4 is selected from substituted or unsubstituted alkyl, halogen, or nitro groups. In Formula II, R5, R6, and R7 are each independently selected from -H or -F, and R5, R6, and R7 are not simultaneously -H; R8 is selected from substituted or unsubstituted alkyl, halogen, or nitro groups.

The invention provides a quaternary high-entropy alloy nano enzyme as well as a preparation method and application thereof, and belongs to the technical field of nano biological materials and biological medicines. The quaternary high-entropy alloy nano-enzyme comprises a single-phase alloy and polyvinylpyrrolidone, the single-phase alloy is composed of four metal elements of M, rhodium, iridium and ruthenium, the surface of the single-phase alloy is modified with the polyvinylpyrrolidone, the element M is selected from palladium or platinum, and the particle size of the quaternary high-entropy alloy nano-enzyme is smaller than 10 nm. The quaternary high-entropy alloy nano-enzyme disclosed by the invention can penetrate through a blood brain barrier, is enriched at a cerebral hemorrhage focus, and comprehensively blocks reactive oxygen species (ROS) cascade reaction after cerebral hemorrhage.

The application relates to the technical field of high ignition point insulating oil, and particularly discloses a metal-supported catalyst and application of the metal-supported catalyst in high ignition point insulating oil. The metal-supported catalyst comprises a carrier, an active metal supported on the carrier and a composite metal oxide mesoporous layer, the carrier is a metal oxide and is at least one selected from MoO2, Al2O3, ZrO2, MgO, TiO2 and SnO2; the active metal is a transition metal and is at least one selected from Fe, Co, Cu, Ni, Ti, Zr, Mn, V and Zn; and raw materials of the composite metal oxide mesoporous layer comprise SiO2, ZrO2 and a carbon precursor. The metal-supported catalyst can be used for synthesizing ester insulating oil, can produce high-efficiency catalysis on synthesis of the ester insulating oil with a small amount, has high cycle stability and can keep excellent catalytic efficiency after multiple cycles.

The invention provides a zinc-containing positive electrode active material and a preparation method thereof, a positive plate and a battery. The positive electrode active material comprises a zinc-containing positive electrode active material matrix and an oxide coating layer which coats the surface and comprises trivalent metal elements, a Zn element is doped in a zinc-containing positive electrode active material matrix, and an anti-position defect is introduced, so that the structural stability is improved; according to the zinc-containing positive electrode active material, a core-shell + concentration gradient structure is adopted, a first circular ring region (with the Zn content of 0.2-3%) serves as a transition layer, the concentration change between a sphere center region (with the Zn content of 0.3-6%) and a second circular ring region (with the Zn content of 0-1%) is smoothed, Zn element dissolution is reduced, and cracking caused by too large deformation difference of materials in a Zn-rich region and a Zn-poor region during charging and discharging can also be avoided. In addition, the oxide coating layer can capture dissolved Zn ions, and Zn element dissolution is further reduced. The synergistic effect improves the cycle life of the material and the battery capacity retention ratio.

The invention discloses tobacco essence capable of increasing sweetness of cigarettes and a preparation method of the tobacco essence. The tobacco essence is prepared from the following raw materials in parts by weight: 7-20 parts of stewed radix puerariae extract, 1.5-5 parts of phyllanthus emblica extract, 1-4 parts of apple extract, 1-5 parts of fennel extract, 1-4 parts of dark plum extract, 1-8 parts of red date extract and 54-87.5 parts of solvent. The tobacco essence has the advantages that when the tobacco essence is applied to cigarettes, the effects of obviously improving sweet feeling, coordinating tobacco fragrance, reducing irritation, covering offensive odor, improving aftertaste and improving fragrance quality are achieved.

This invention discloses a cement-based two-component grouting material modified with nano-hexagonal boron nitride. The grouting material raw materials include component A and component B. Component A includes cement, retarder, micro-expansion agent, and nano-modified h-BN. Component B includes water glass. The nano-modified h-BN is obtained by ball milling and modification of h-BN. Non-ionic hydrophilic covalently grafted nano-hexagonal boron nitride is used as an external modified filler in the cement-water glass two-component grouting material. It works together with retarders, expansion agents, and other additives to improve the dispersion stability of nano-boron nitride in the cement-based grouting material slurry (high electrolyte environment), thereby improving the dispersion uniformity of nano-hexagonal boron nitride in the stone body. It can retain effective stone components, improve the overall density of the grout after molding, reduce slurry dissolution, inhibit ion permeation rate, reduce environmental damage during grouting, and help maintain ecological balance.

The present invention provides a manganese iron carbonate precursor, a preparation method thereof, a positive electrode active material, a positive electrode sheet, and a battery. The manganese iron carbonate precursor includes a manganese iron carbonate core and an FeCO3 shell disposed on at least a part of the surface of the core; the chemical formula of the manganese iron carbonate precursor is (Mn x Fe y )·(x + y)(CO3)·zFeCO3, where x + y + z = 1, x + y ≤ 0.9, x ≥ 0.3, and y ≥ 0.125x. The manganese iron carbonate precursor provided by the present invention is used to prepare a positive electrode active material. After the positive electrode active material is used in a battery, the cycle performance and rate performance of the battery can be significantly improved.

The present application relates to lactic acid bacteria fermentation culture technical field, specifically to a kind of lactic acid bacteria fermentation culture equipment, including fermentation tank body and the stirring motor being arranged on fermentation tank body, further include the stirring shaft being vertically arranged in fermentation tank body, stirring shaft is rotatably connected with fermentation tank body, and the stirring shaft is spaced along axial direction and is provided with multiple groups of linear stirring vane, each group of stirring vane is symmetrically arranged in the left and right sides of stirring shaft, and reciprocating transmission mechanism is arranged on fermentation tank body and is drivingly connected with stirring shaft, for driving stirring shaft to drive all stirring vane synchronous reciprocating swing stirring, the device discards traditional 360 ° rotary stirring, eliminates liquid whole circumferential follow-up phenomenon from the source, without adding flow baffle in tank, reduce cleaning dead angle, reduce the risk of bacterial contamination, the low shear flow field brought by reciprocating swing can avoid lactic acid bacteria cell damage, while liquid surface disturbance amplitude is small, greatly reduce air dissolving to maintain the anaerobic environment required for fermentation.

The invention belongs to the technical field of lithium ion batteries, and relates to a cyano electrolyte additive, an electrolyte and a lithium ion battery. The cyano electrolyte additive comprises a nitrile additive and a functional additive; the structural formula of the functional additive is shown in the specification. The nitrile additive and the functional additive are compounded, the functional additive has a cyano group and a triazine ring, the triazine ring is chelated with transition metal ions and cooperates with the cyano group to form a film, and a benzene ring rigid structure can enhance the thermal stability. The nitrile additive and the functional additive have a cyano complementation effect, three phenyl groups in the functional additive are connected with a triazine ring, so that the functional additive has a larger structure and steric hindrance and cannot be completely complexed with transition metal ions on the surface of the positive electrode, and the short-chain nitrile additive has a smaller structure and can make up the space of the functional additive; and the two synergistically form a complementary effect to form a compact interfacial film on the surface of the positive electrode so as to improve the high-temperature performance.

The application discloses a preparation method of a high-compaction high-multiplying lithium manganese iron phosphate positive material, which comprises the following steps: dissolving lithium dihydrogen phosphate in water, adding iron phosphate to uniformly disperse, and obtaining iron phosphate slurry with surface enrichment of lithium dihydrogen phosphate; mixing the iron phosphate slurry, a manganese source and water to uniformly form a slurry; and adding a lithium source, a carbon source and double dopants, uniformly stirring, and then performing spray drying and sintering to obtain the lithium manganese iron phosphate positive material. The lithium manganese iron phosphate prepared by the method has high compaction performance, and the compaction density can reach 2.34 g / cm 3 The manganese dissolution phenomenon is reduced, the highest manganese dissolution is not more than 83 ppm after 1C cycle for 1000 times, the electrochemical performance is effectively improved, and the discharge can reach more than 132 mAh / g after 1C cycle for 1000 times.

The application provides a composite proton exchange membrane and a preparation method and application thereof. The composite proton exchange membrane comprises an expanded polytetrafluoroethylene fiber membrane and perfluorosulfonic acid resin particles distributed among the pores of the expanded polytetrafluoroethylene fiber membrane. The perfluorosulfonic acid resin particles are directly compounded with polytetrafluoroethylene to form a composite reinforced structure, and the perfluorosulfonic acid resin particles are uniformly dispersed inside the pores of the expanded polytetrafluoroethylene fiber membrane, which can effectively improve the filling performance of ePTFE and perfluorosulfonic acid resin particles, thereby improving the anti-swelling performance of the composite proton exchange membrane, reducing the dissolution of perfluorosulfonic acid resin, and also effectively reducing the amount of perfluorosulfonic acid resin and improving the service life and durability of the composite proton exchange membrane.

The invention belongs to the technical field of sodium-ion battery positive electrode materials, and particularly provides a negative-electrode-free sodium-ion battery positive electrode material and a synthesis method and application thereof, and the negative-electrode-free sodium-ion battery positive electrode material is of a core-shell structure with NaNi < x > Fe < y > Mn < z > M < 1-x-y-z > O as a core and Na < alpha > Mn < beta > O < gamma > F < 2-gamma > as a shell; m is selected from one or more of Sn, Pb, In, Bi, Sb, Zn and Au; wherein 0 < = x < = 1, 0 < = y < = 1, 0 < = z < = 1, x + y + z < 1, alpha > = 1.1, beta > = 1, and gamma > = 0. The positive electrode material prepared by the invention has the advantages of high capacity retention ratio and good cycling stability.

The application discloses a method for extracting effective components of radix paeoniae alba, which comprises the following steps: (1) preparing a radix paeoniae alba suspension, and feeding the radix paeoniae alba suspension into a treatment cavity; (2) a needle-plate electrode structure is arranged in the treatment cavity, the needle-plate electrode structure is connected with a high-frequency pulse power supply, and high-voltage pulse treatment is applied to the radix paeoniae alba suspension in the treatment cavity; and (3) the extracted solution after treatment is concentrated under reduced pressure to obtain active extracts. The extraction process can quickly inhibit enzyme activity, prevent paeoniflorin from being hydrolyzed by coexisting enzymes, realize efficient extraction of paeoniflorin at low temperature, and ensure the structural integrity of macromolecular active components such as radix paeoniae alba polysaccharide; and the scheme can improve the extraction efficiency and shorten the production cycle.

The application provides a positive electrode active material, a secondary battery and an electric device. The positive electrode active material of the application comprises an aluminum-doped lithium iron phosphate core and a carbon layer arranged on the surface of the core; the concentration of aluminum in the core decreases from the surface to the geometric center; and 5≤K≤20, K=(C1 / C2)×(I D / I G )×1000 / (Dv50×T) is satisfied; C1 is the average atomic concentration of aluminum in the surface region of the core; C2 is the average atomic concentration of aluminum in the central region of the core; I D is the intensity of the D peak of the positive electrode active material in the Raman spectrum; I G is the intensity of the G peak of the positive electrode active material in the Raman spectrum; Dv50 is the particle size corresponding to the volume accumulation of 50% of the positive electrode active material; and T is the thickness of the carbon layer. The positive electrode active material of the application can achieve higher rate performance, longer cycle life and excellent high-temperature stability when applied to a secondary battery.

The application discloses a catalytic wet oxidation catalytic material and a preparation method thereof. The catalytic wet oxidation catalytic material takes acid modified montmorillonite loaded with copper oxide and optional nano ferrous sulfide as a matrix layer, and the outer surface of the matrix layer is wrapped with an active layer which is alumina loaded with nano ferrous sulfide; the matrix layer and the active layer are in a core-shell structure; the weight of the copper oxide accounts for 2-10% of the weight of the catalytic material, and the weight of the nano ferrous sulfide accounts for 5-20% of the weight of the catalytic material. The application further provides a preparation method of the catalytic wet oxidation catalytic material. The catalytic material has excellent catalytic degradation capacity for organic pollutants when used for treating organic wastewater.

The invention discloses a modified ardealite-based artificial aggregate and application thereof in a road base, and a preparation method of the artificial aggregate comprises the following steps: crushing and screening ardealite, mixing and stirring with composite modified slurry, and forming and curing to obtain the modified ardealite-based artificial aggregate. According to the preparation method, the phosphogypsum is subjected to enhancement and hydrophobic modification through the composite modified slurry, the prepared artificial aggregate has excellent mechanical properties and water stability, the 24-hour water absorption rate is lower than 5%, the surface hydrophobic angle is larger than 150 degrees, the dissolution rate of soluble phosphorus and soluble fluorine is reduced by 85% or above compared with that of unmodified homologous phosphogypsum, and the prepared artificial aggregate has a good application prospect. The artificial aggregate is used as a main aggregate for a road base material, and the unconfined compressive strength and the strength retention rate after water immersion of the artificial aggregate are subjected to formula adjustment according to a road grade or a structural layer position and are not lower than those of existing cement concrete; bulk and high-value utilization of the ardealite is realized, and the method has remarkable environmental protection and economic benefits.

The invention provides a secondary battery and an electronic device, the secondary battery comprises a positive pole piece and an electrolyte, the positive pole piece comprises a positive pole current collector and a positive pole material layer arranged on at least one surface of the positive pole current collector, the positive pole material layer comprises nickel cobalt lithium aluminate, based on the mole number of metal elements except lithium in the positive pole material layer, the molar percentage content of the aluminum element is C1%, and C1 is more than or equal to 2 and less than or equal to 20; the electrolyte comprises a first component, based on the mass of the electrolyte, the mass percentage content of the first component is m1%, and m1 is larger than or equal to 0.01 and smaller than or equal to 5. The secondary battery provided by the invention can give consideration to low-temperature discharge performance, low-temperature cycle stability and high-temperature storage performance.

The application provides a method for recovering platinum group metals from waste automobile exhaust catalysts, and belongs to the field of precious metal recovery. The method comprises the following steps: crushing and impurity removal pretreatment of the waste catalyst to obtain solid residue; mixing the obtained solid residue with lye and then performing hot-pressing activation to obtain active residue; using an acidic leaching system of hydrochloric acid-hydrogen peroxide-sodium chloride to leach the active residue to obtain a leaching solution rich in platinum group metals; adjusting the acidity of the leaching solution and then adding a first adsorption material to selectively adsorb platinum and palladium, and separating the supernatant and platinum / palladium enrichment material; adjusting the acidity of the supernatant and then adding a second adsorption material to selectively adsorb rhodium, and performing solid-liquid separation to collect rhodium enrichment material; and performing elution and refining on the platinum / palladium enrichment material and the rhodium enrichment material respectively to recover platinum, palladium and rhodium. Through the recovery method of optimized design of alkaline hot-pressing activation-mild acidic directional leaching-two-stage magnetic adsorption separation, the platinum, palladium and rhodium in the waste automobile exhaust catalysts are efficiently recovered.

The present application relates to a kind of mine wastewater phosphorus removal treatment system and phosphorus removal method, belong to water body phosphorus removal technical field.The present application is creatively with nine water ferric nitrate and six water ferric chloride as iron source, glucose as carbon source and reducing agent, urea as alkali source, based on hydrothermal synthesis method, the particle material with four-iron oxide as core and carbon layer as shell is synthesized, then it is further oxidized by using hydrogen peroxide solution, more oxygen-containing groups are constructed, then lanthanum chloride is added for lanthanum doping, metal lanthanum modified material is obtained, finally after surface modification of polydopamine and amino silane coupling agent in turn, a kind of phosphorus removal agent is prepared, when it is used for phosphorus removal of mine wastewater in the phosphorus removal treatment system provided with electromagnet, only simple magnetic attraction treatment is needed, the separation and recovery of phosphorus removal agent can be realized, and at the same time, even in the face of strong acid mine wastewater, metal lanthanum in phosphorus removal agent still dissolves less, and the phosphorus removal effect is very good.

The invention relates to the technical field of sodium-ion batteries, and discloses ferro-manganese fluoride, a sodium-ion battery positive electrode material and a preparation method thereof, and a sodium-ion battery. The chemical formula of the ferro-manganese fluoride is Fe < 1-beta > Mn < beta > F2, and beta is more than or equal to 0.5 and less than 1. The ferro-manganese fluoride provided by the invention can be used as a coating layer of a sodium ion battery positive electrode material, and the coating layer can provide charge compensation in a sodium ion deintercalation / intercalation process and improve the discharge medium voltage, so that the material realizes long cycle life while maintaining high specific capacity.