20results about How to "Increase oxidation potential" patented technology

The invention discloses a method for preparing lithium carbonate by using a waste lithium iron phosphate positive electrode material, which comprises the following steps: pulverizing the waste lithium iron phosphate positive electrode material, sieving, fully mixing the pulverized waste lithium iron phosphate positive electrode material with concentrated sulfuric acid, and carrying out dump leaching for 6-12 hours; primary leaching: raw materials come from secondary leaching residues, acid is adjusted to the pH value of 1.5-2.0, sodium ferrate is added, stirring leaching is performed at the temperature of 60-70 DEG C, leaching liquid serves as secondary leaching liquid, and leaching residues are recycled to be used for preparing iron phosphate raw materials; and secondary leaching: the solution comes from the primary leaching solution, acid is consumed by using heap leaching raw materials, the end point PH is controlled to be 3.0-3.5, sodium ferrate is added, and stirring leaching is performed under the condition of 45-55 DEG C. No hazardous waste is generated in the whole process, leaching residues are used as raw materials for preparing iron phosphate, calcium carbonate can be recycled for acid adjustment, and harmless treatment is truly achieved.

The embodiment of the invention provides a solid electrolyte and a preparation method and application thereof, and relates to the technical field of battery materials. The solid electrolyte comprises a halide electrolyte and a composite coating layer arranged on the surface of the halide electrolyte, wherein the composite coating layer comprises lithium fluoride and aluminum oxide in a mass ratio of (1-9): (9-1). The solid electrolyte has excellent ionic conductivity, oxidation potential and air stability, and is beneficial to realizing high-rate charge-discharge performance of the battery.

The invention discloses a multiplying power type electrolyte additive, electrolyte and a lithium ion battery, and belongs to the technical field of lithium ion, the multiplying power type electrolyte additive is a silane group dimethyl ether compound containing two symmetrical structures, and the general formula of the additive is # imgabs0 #; the lithium ion battery comprises a positive plate, a negative plate, an isolating membrane and the multiplying power type electrolyte. According to the invention, the dimethyl ether compound of the methoxy silane group with a symmetrical structure is used as an additive to be applied to the preparation of the lithium ion battery electrolyte. According to the present invention, the dimethyl ether compound containing the methoxy silane group with the symmetric structure is combined with the auxiliary additive so as to provide characteristics of low cell impedance, excellent battery charge-discharge and cycle performance, and high temperature performance of the cell in the high energy density battery system; the electrolyte is used for manufacturing the lithium ion battery, and the obtained battery has excellent charge-discharge performance.

The present invention discloses a rate-type electrolyte additive, an electrolyte and a lithium-ion battery, which belong to the field of lithium-ion technology. The rate-type electrolyte additive is a dimethyl ether compound containing two symmetrically structured silane groups, and the general formula of the additive is:; The lithium-ion battery comprises a positive electrode sheet, a negative electrode sheet, a separator and the above-mentioned rate-type electrolyte. The present invention uses a dimethyl ether compound of a symmetrically structured methoxysilane group as an additive to manufacture a lithium-ion battery electrolyte. The dimethyl ether compound containing a symmetrically structured methoxysilane group is used in combination with an auxiliary additive, and in a high-energy-density battery system, it has lower cell impedance, better battery charge-discharge and cycle performance, and can also take into account the high-temperature performance of the cell. The electrolyte is used to manufacture a lithium-ion battery, and the resulting battery has excellent charge-discharge performance.

The invention relates to the technical field of recycling of ore soil resources, in particular to a flotation desulfurization activating agent and a preparation method and application thereof. The flotation desulfurization activating agent comprises the following raw materials in terms of 1 mol of phytic acid: 0-6 mol of copper hydroxide and 0-6 mol of ammonium carbonate; the flotation desulfurization activator satisfies the following formula: (2m + 2n): q = 12: 1, in the formula, q is the amount of substance of phytic acid; m is the amount of substance of copper hydroxide; and n is the amount of substance of ammonium carbonate. The flotation desulfurization activating agent can reduce the content of hydrophilic substances wrapped on the surface of pyrite in high-sulfur bauxite so as to expose the fresh surface of the high-sulfur bauxite, and in addition, copper ions of copper hydroxide can be promoted to be directly adsorbed on sulfur atoms of the pyrite in the high-sulfur bauxite with the exposed fresh surface through ammonium carbonate, so that the flotation desulfurization activating agent can be used for treating the pyrite in the high-sulfur bauxite. Therefore, the number of active sites on the surface of the high-sulfur bauxite can be increased, and the activation performance of the activator on the high-sulfur bauxite can be improved.

The invention provides a zirconium-based solid electrolyte and a preparation method and application thereof, the chemical composition of the inorganic zirconium-based solid electrolyte material is Lix + yZrCl4 + x (OH) y, x is more than or equal to 0 and less than or equal to 2, and y is more than 0 and less than or equal to 2. The hydroxyl group is introduced to induce the material to generate lattice distortion and form a two-phase mixed region, and the rotation characteristic of the hydroxyl group is utilized to reduce the steric hindrance of lithium ion transmission, so that the ionic conductivity is remarkably improved. Besides, the introduction of the hydroxyl group induces in-situ generation of a self-limiting stable interface layer rich in Cl when the electrolyte is in contact with a lithium negative electrode, so that side reaction is effectively inhibited, and direct stable matching of the zirconium-based solid electrolyte and the lithium negative electrode is realized.

The invention belongs to the technical field of batteries, and discloses a dual-ion battery and a preparation method thereof. The preparation method comprises the following steps: adding a polymer monomer in a burdening stage, uniformly dispersing the polymer monomer in a positive pole piece and a negative pole piece, finally injecting an electrolyte added with a polymer initiator, and initiating an in-situ polymerization reaction through high temperature, so that the liquid electrolyte is changed into a gel state. The invention also discloses the dual-ion battery prepared according to the method. The polymer monomers are uniformly distributed in the positive and negative pole pieces, so that the binding force of the active substance and the current collector is enhanced, and the pole piece expansion in the battery circulation process is reduced. In addition, the electrolyte is changed into a gel state, so that the oxidation potential of the electrolyte is remarkably improved, the stability of a positive and negative electrode interface is enhanced, the consumption of the electrolyte is reduced, and the safety performance of the battery is improved.

The invention relates to the technical field of batteries, in particular to an electrolyte precursor solution, an electrolyte as well as a preparation method and application of the electrolyte. The electrolyte precursor solution comprises a polycyclic ether monomer, a fluorine-containing polycyclic ether monomer, a plasticizer, an initiator and a lithium salt, the fluorine-containing multi-element cyclic ether monomer is a fluorine-containing five-membered cyclic ether monomer and / or a fluorine-containing six-membered cyclic ether monomer. According to the electrolyte precursor solution disclosed by the invention, the electrolyte precursor solution with excellent performance can be formed through coordination and cooperation of all the raw material components, so that the finally obtained polymer electrolyte has high ionic conductivity and high oxidation potential. The polymer electrolyte is formed by in-situ polymerization, good interface contact can be formed, and interface impedance is effectively reduced.

The present invention belongs to the technical field of aquaculture, and particularly relates to an aquaculture composite microbial inoculant and a preparation method and a preparation device thereof, comprising a fermentation kettle with a stirring component vertically built in, a microbial inoculant introduction component and a sampling component respectively arranged on the upper and lower parts of the fermentation kettle, and an output end of the microbial inoculant introduction component intersects with a rotating shaft stirring end of the stirring component in the fermentation kettle through a three-way pipe, a base is connected to the bottom of the fermentation kettle through a connecting column, and a sampling component is arranged between the bottom of the fermentation kettle and the base. The advantage of the present application is that uniform sampling of the preparation of the aquaculture composite microbial inoculant in the fermentation kettle is achieved by rotating a driving component, and the quantitative extraction of the sampled microbial inoculant can be achieved by combining the sampling component with the driving component at the same time; the gas used for supplying oxygen to the fermentation is linked with the delivery of the microbial liquid material, and the caliber of the liquid cavity is adjusted by the size of the gas intake volume, thereby compensating for the insufficient pressure supply to the liquid cavity.

The application discloses a kind of solid electrolyte and preparation method thereof, polymer composite solid electrolyte and solid lithium battery, belong to solid lithium battery technical field, solid electrolyte includes lithium-containing transition metal oxide and doped element doped in lithium-containing transition metal oxide;The chemical formula of the solid electrolyte is Li x M (1‑y) N y O z ;Wherein, M is any one of transition metal, and the transition metal includes any one of Co, Ni or Mn, N is any one or more of doped element, x>0, 0.001≤y≤0.5, z>0.The solid electrolyte provided by the application has high ionic conductivity, controllable electronic conductivity, good interface compatibility, strong environmental stability and low cost, and is suitable for existing solid lithium battery system.

The invention relates to the technical field of polymer electrolyte, and discloses metal organic polyhedron-based polymer electrolyte as well as a preparation method and application thereof. The metal organic polyhedron-based polymer electrolyte is obtained by compounding a metal organic polyhedron, a cross-linked polymer containing a plurality of oxygen-containing functional groups, an organic solvent and a lithium salt to obtain a precursor solution of the coordination-driven cross-linked polymer electrolyte and further carrying out a cross-linking polymerization reaction. According to the novel coordination-driven cross-linked polymer electrolyte provided by the invention, a metal organic polyhedron is used as a coordination center, so that the stability and the ion conduction performance of the electrolyte are remarkably improved, and the novel coordination-driven cross-linked polymer electrolyte does not contain any liquid, belongs to an all-solid-state electrolyte and has an obvious inhibition effect on lithium dendrites in a battery operation process; battery short-circuit failure can be avoided, and the cycle life of the solid-state lithium battery is remarkably prolonged.

The present invention discloses a lithium ion battery electrolyte, a lithium ion battery and a preparation method thereof. The electrolyte is composed of an organic solvent, an electrolyte salt and a functional additive. The organic solvent contains polyfluorinated benzene; the functional additive includes a functional additive I and a functional additive II; wherein R 1 ~R 4 are each independently selected from a hydrogen atom, a substituted or unsubstituted C 1 ~C 6 Alkyl, substituted or unsubstituted C 1 ~C 6 unsaturated hydrocarbon group, substituted or unsubstituted C 2 ~C 20 One of the groups formed by replacing an alkenyl group, a cyano group, an aromatic group having 6 to 18 carbon atoms with a carbonyl group, a cyano group, a halogen atom, a nitro group, a carboxyl group, or a sulfonic acid group, wherein the halogen atom is F, Cl, or Br; X is any one selected from C, N, or B; the mass of the additive I accounts for 0.2% to 3% of the total mass of the electrolyte; the mass of the additive II accounts for 0.3% to 2.4% of the total mass of the electrolyte.

The invention relates to the technical field of lithium ion batteries, and discloses a multipolymer, a preparation method thereof, a polymer electrolyte and a solid lithium ion battery. The multipolymer comprises structural units shown in formulas (a), (b) and (c), and structural units shown in formulas (II), (III) and (IV), r1 is alkyl of C2-C4; r2 is H and / or alkyl of C1-C4; r3 is at least one of H, F, Cl, Br, I, methyl, ethyl and phenyl; r4 is at least one of H, methoxyl, ethyoxyl, cyclopentyl, phenyl and p-fluoro substituted phenyl; r5 is H and / or alkyl of C1-C4; r6 is at least one of phenyl, C1-C4 alkyl and fluoroalkyl; m is greater than or equal to 1, p is greater than or equal to 1, n is greater than or equal to 1, and R7 is C1-C4 alkyl; # imgabs0 #

This invention discloses a composite free radical sludge deodorizer and its preparation method, belonging to the field of sludge treatment technology. The deodorizer consists of an active free radical source, an active activator, a balancing stabilizer, a penetrating dispersant, and a sustained-effect promoter. This invention uses a compound of various persulfates and ferrates as free radical sources to synergistically generate highly active free radicals such as sulfate radicals (·SO4−) and hydroxyl radicals (·OH). Chlorides and quaternary ammonium salts are used as activators, organic acids as stabilizers, and surfactants are innovatively introduced to enhance permeability. This deodorizer can rapidly and thoroughly decompose malodorous substances such as hydrogen sulfide, thiols, ammonia, and humic amines in sludge, mineralizing them into CO2, H2O, and inorganic salts without secondary pollution. Simultaneously, this invention can effectively break down the cell walls of microorganisms in sludge, releasing internal organic matter and significantly improving the methane yield and volatile solids removal rate of subsequent anaerobic digestion. This invention has the advantages of high deodorization efficiency, rapid action, low cost, environmental friendliness, and enhanced sludge resource value.

This invention belongs to the field of electrochemical technology and relates to a high-voltage resistant composite positive electrode sheet and its preparation method for suppressing gas generation during battery cycling. The composite positive electrode sheet includes a positive electrode sheet and a polymer coating on the active material layer of the positive electrode sheet. The polymer coating is a composite polymer coating formed by in-situ copolymerization of phosphorus-containing monomers and fluorinated acrylate monomers in the presence of polyethylene glycol borate under ultraviolet light. The mass ratio of the phosphorus-containing monomers, fluorinated acrylate monomers, and polyethylene glycol borate is (3~4):1:(0.15~0.4). The composite positive electrode sheet of this invention can suppress gas generation during battery cycling and improve its high-voltage resistance (≥4.3V vs Li). + / Li) stability.

The invention relates to the technical field of lithium batteries, and discloses a coagulant electrolyte, a gel-state battery and a preparation method of the gel-state battery. The gel electrolyte comprises a polyelectrolyte and an electrolyte solution, wherein the polyelectrolyte is prepared by reacting a first monomer serving as a cross-linking agent with a second monomer containing nitryl. According to the gel electrolyte, the interface impedance can be reduced, the ionic conductivity can be improved, and the rate capability and the cycle performance of a gel-state battery can be improved; the high oxidation potential is achieved, and the safety performance of the gel-state battery can be improved; in addition, the gel-state battery can achieve a good flame-retardant effect.

The invention discloses a canna edulis ker starch modification method and application, and the method comprises the following steps: cleaning canna edulis ker, grinding into thick liquid, carrying out starch modification by adopting a microwave coupling H2O2 method, carrying out lactic acid fermentation on the modified starch and plant lactic acid bacteria, fermenting to obtain canna edulis ker lactic acid fermentation liquor, adding saccharomycetes, and carrying out alcoholic fermentation to obtain the canna edulis ker starch. And then adding acetic bacteria for acetic fermentation, ageing and clarifying to obtain the canna edulis ker vinegar. The canna edulis ker vinegar prepared by the preparation method disclosed by the invention is good in flavor and rich in probiotics; meanwhile, the lactic acid fermentation procedure is added, the acidity is increased, nutrient substances of the canna edulis ker are reserved to the maximum extent, lactic acid bacteria fermentation has a certain preservative and fresh-keeping effect, the fermentation time in the fermentation process is effectively shortened through microwave coupling H2O2 canna edulis ker starch modification, and the production time is shortened.

The invention relates to a lithium ion battery electrolyte and a lithium ion battery. The lithium ion battery electrolyte comprises a lithium salt, a solvent and an additive, the solvent comprises a carbonic ester solvent and a carboxylic ester solvent, the carboxylic ester solvent comprises a compound A with a structure shown in a formula I, the additive comprises a film-forming additive, the film-forming additive comprises an anhydride additive, and the anhydride additive comprises a compound B with a structure shown in a formula II. The acid anhydride additive comprises an acid anhydride compound B with a structure as shown in a formula II. By designing the composition of the lithium ion battery electrolyte, the problem of poor cycle performance of the current lithium cobalt oxide lithium ion battery under 5V high voltage is solved, and the high-temperature cycle performance and high-temperature storage performance under 5V high voltage are improved.

The invention discloses a synthesis method of an antioxidant 44PD, and belongs to the technical field of chemical synthesis. The method comprises the following steps: placing p-nitroaniline, butanone and a catalyst in a dry reaction kettle, sealing the reaction kettle, replacing the reaction kettle with nitrogen and hydrogen in turn, introducing hydrogen to pressurize the reaction kettle, and heating the reaction kettle to obtain the antioxidant 44PD. The catalyst uses activated carbon as a carrier to load three metal active components, namely platinum, nickel and copper. The catalyst is used in combination to optimize the catalytic performance. The platinum, nickel and copper form a solid solution, which can limit the shedding of copper and avoid the occurrence of "copper damage" that has an adverse effect on the antioxidant performance and gasoline rubber. The synergistic effect between nickel and platinum atoms can change the electronic environment and the d-band center position of the platinum atoms, thereby increasing the oxidation potential of the platinum and restricting the agglomeration and shedding of the platinum, which is beneficial to the catalysis, repeated use and recovery of the platinum.

The application relates to a halide solid-state electrolyte as well as a preparation method and application thereof, and relates to the technical field of new energy materials. 1.5 Zr 0.5 M 0.5 Cl5O 0.5 , wherein M is Ta or Nb; and the inner core is a crystalline halide electrolyte with a chemical general formula of Li 2.5 Y 0.5 Zr 0.5 Cl 6‑4x F 4x , wherein 0.05<=x<=1.45. The halide solid-state electrolyte has high ion conductivity, high oxidation potential, high mechanical performance, good chemical stability with sulfides and high air stability.