1077 results about "Lithium" patented technology

Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-energy mill of the clay mineral, and performing a liquid leach to obtain a lithium rich leach solution.

The invention belongs to the technical field of nanocrystal nucleus early strength agents, and provides a damp and hot nanocrystal nucleus early strength agent, a tailing solidification filling material and a preparation method and application of the damp and hot nanocrystal nucleus early strength agent and the tailing solidification filling material. The invention discloses a molybdenum ore tailing slurry which is prepared from the following raw materials in parts by weight: 1 part of Portland cement, 4 to 6 parts of molybdenum ore tailings, 0.06 to 0.1 part of zeolite powder, 0.07 to 0.1 part of nanoscale attapulgite powder, 0.06 to 0.1 part of gamma-glycidyl ether oxypropyl trimethoxy silane, 0.03 to 0.1 part of potassium silicate, 0.04 to 0.1 part of sodium hydroxide, 0.06 to 0.1 part of calcium formate, 0.04 to 0.1 part of lithium metaaluminate and 1.25 to 1.75 parts of water. According to the technical scheme, the problem that a filling body prepared from an early strength agent in the prior art is low in early and later strength is solved, and meanwhile, the early strength agent is simple and convenient in preparation mode, low in cost and wide in application range.

The invention discloses a silicon-carbon composite material and a preparation method thereof. The composite material is composed of porous hard carbon, inorganic lithium salt doped with the porous hard carbon and a porous metal frame as a matrix, nano silicon deposited in pores of the matrix, and an amorphous carbon composite material coated on the surface. The preparation method comprises the following steps: uniformly mixing resin, inorganic lithium salt and a porous metal framework, and carrying out hydrothermal reaction, activation and secondary carbonization to obtain a porous carbon complex; and depositing nano silicon and coating the nano silicon with an organic lithium salt through a vapor deposition method to obtain the silicon-carbon composite material. According to the obtained material, expansion is reduced through large-aperture deposited nanometer silicon of the metal frame structure, the defects are reduced through the inorganic lithium salt of the inner core and the organic lithium salt of the outer shell, the ion diffusion rate is increased, and the first efficiency and the rate performance are improved.

The invention provides a metal material recycling device and a method for leaching fluorine beryllium thallium and lithium rubidium cesium in lithium slag. Relates to the field of metal material recycling, and comprises a leaching tank placed on the ground through four supporting frames, the top of the leaching tank is fixedly provided with a top cover, and the bottom of the leaching tank is fixedly provided with a bottom cover. According to the metal material recycling device and the leaching method for fluorine beryllium thallium and lithium rubidium cesium in the lithium slag, the ultrasonic generator is arranged to supply energy to the first ultrasonic transducer and the second ultrasonic transducer to generate ultrasonic waves, the ultrasonic waves generate microjet flow to impact the surface of minerals, acid liquor permeation and ion diffusion are accelerated, the leaching time is shortened, and the efficiency is improved; the surface of the lithium slag is not prone to passivation, the leaching rate of target metal ions is increased, the leaching liquid is pumped out through the water suction pump, manual contact with the leaching liquid in the next solid-liquid separation procedure is facilitated, dilute sulfuric acid is supplemented through the acid supplementing pipe, then the lithium slag is placed through the funnel, and the consistency and controllability of starting of the leaching reaction are guaranteed.

The invention provides a method for solidifying heavy metal ions in lithium slag, and belongs to the technical field of solidified lithium slag treatment. The method for solidifying the heavy metal ions in the lithium slag comprises the steps that lithium slag powder is taken as a base material, sodium fluoride, silicon carbide, sodium tetraborate and hydroxyapatite are added into the base material for dry mixing, and mixed powder is obtained; adding deionized water into the mixed powder to prepare a spherical green body; drying the spherical green body to obtain a dried green body; and sintering the dried green body, and cooling to room temperature to obtain the cured lithium slag ceramsite. According to the method, pollution-free treatment of the lithium slag is achieved, meanwhile, the treatment process is simplified, environmental damage is reduced, and resource utilization of the lithium slag is improved.

A treatment process for crystallizing a metal sulfate involving pre-treating a feedstock comprising calcium, magnesium, and / or lithium impurities, the pre-treating involving pre-leaching the feedstock in the presence of a lixiviant, selectively extracting a first portion of any of the impurities from the feedstock, and forming a leached solution comprising an uncrystallized metal sulfate and any remaining impurities; and / or refining the leached solution and removing a second portion of any of the remaining impurities; and crystallizing the uncrystallized metal sulfate from the leached solution to form a crystallized metal sulfate. So processed, the crystallized metal sulfate may be battery-grade or electroplating-grade.

The invention discloses a method for extracting lithium and sodium from overhaul slag through electrochemistry assistance, and belongs to the technical field of aluminum electrolysis lithium-containing solid waste cyclic economic utilization and environmental protection. A method for extracting lithium and sodium from overhaul slag through electrochemical assistance comprises the following steps that the overhaul slag and auxiliary materials are subjected to die-casting forming to prepare an electrode plate, and then lithium and sodium are extracted from the overhaul slag through an electrochemical method. According to the method, for the lithium-containing overhaul slag solid waste generated in the electrolytic aluminum industry, migration and dissolution of metal ions are enhanced through electrochemical assistance in a weak acid environment, so that comprehensive recycling of valuable elements of lithium and sodium is achieved, and meanwhile the recovery rate of lithium can be larger than 90%. In addition, the method can be carried out at low temperature, so that the energy consumption can be obviously reduced, and meanwhile, the equipment investment can be greatly reduced; meanwhile, solid waste resource utilization can be achieved, the risk of secondary pollution is reduced, and good economic and environmental benefits are achieved.

The invention relates to a layered oxide material with high cycle stability and a preparation method and application thereof, the chemical formula of the layered oxide material is LiaNabNixMn (1-x) O2, 0 lt; xlt; 0.90 < = a < = 1, 0 < = b < = 0.1; the preparation method comprises the following steps: preparing a layered oxide precursor NaNi < x > Mn < 1-x > O < 2 >; mixing the precursor with a first lithium source, and then carrying out lattice site Li < + > / Na < + > replacement by at least one of molten salt ion exchange, solid phase ion exchange and liquid phase ion exchange to obtain an intermediate; cleaning the intermediate, performing solid-liquid separation, and drying to obtain a layered oxide material with high cycle stability; the layered oxide material is prepared through lattice site selective Li < + > / Na < + > replacement reaction, so that the obtained material has excellent cycling stability and specific capacity, and the method is simple in process, low in cost and suitable for large-scale production.

The invention provides a lithium ore roasting waste heat recovery device and a process for extracting beryllium from lithium-containing ore. The waste heat recovery device comprises a box body, an adjusting mechanism and a heat exchange pipe. A first dispersion cover and a second dispersion cover are mounted on the left side and the right side of the box body through bolts, and the adjusting mechanism is located outside the second dispersion cover; the adjusting mechanism comprises a discharge pipe, a mounting cover and an adjusting motor, the discharge pipe is fixedly arranged at the outlet end of the second dispersion cover, and the mounting cover is hermetically mounted at the outer end of the discharge pipe through a bolt. The flow channel of the heat exchange element is designed to be of a reducing structure with a thick inlet and a thin outlet, at the moment, a high-temperature section at the inlet position can fully exchange heat, but the heat of smoke entering a low-temperature section is not higher than that of the high-temperature section, the inner diameter of the outlet section can be reduced, the smoke flow is small at the moment, and therefore most smoke can be gathered in the low-temperature section, and full heat exchange of the low-temperature section can be achieved.

The invention relates to the technical field of solid waste treatment, and discloses a lithium slag treatment method which comprises the following steps: (1) mixing lithium slag and an alkaline reactant, and grinding to obtain a mixed raw material; (2) sintering the mixed raw material to obtain sintered clinker; and (3) dipping the sintered clinker in an alkaline solution, and carrying out solid-liquid separation. According to the method, toxic elements in the lithium slag can be effectively removed, environmental risks caused by long-term stockpiling of the lithium slag are avoided, potassium and sodium elements in the lithium slag can be effectively removed, adverse effects of the lithium slag on soil and building materials in building and soil application are avoided, and the utilization rate of the lithium slag is increased.

The invention discloses a lithium-rich manganese-based positive electrode material with a fast ion conductor coating layer and bulk phase doping and a preparation method of the lithium-rich manganese-based positive electrode material, the surface of the lithium-rich manganese-based positive electrode material is coated with the coating layer composed of amorphous Li3PO4, the interior of the bulk phase is doped with other elements, the structural formula of the lithium-rich manganese-based positive electrode material is Li < 1 + a > Mn M < c > O < 2 >, m is one or more than one of Ni, Co, A1, Cr, Fe, Mg and Ce, 0 lt; a is less than or equal to 0.2, 0lt; b < = 1, 0lt; c < = 1, and a + b + c = 1. The method comprises the following steps: (1) fully mixing a lithium-rich manganese-based positive electrode material precursor, a certain proportion of lithium salt and a proper amount of phosphate; and (2) sintering the uniformly mixed sample in a certain atmosphere to obtain the lithium-rich manganese-based positive electrode material with the fast ion conductor coating layer and the bulk phase doping structure. The first coulombic efficiency of the lithium-rich positive electrode material is improved, the cycling stability and the rate capability of the lithium-rich positive electrode material are improved, and the requirements of a power battery can be met.

The invention discloses a method for detecting trace chromium element in copper foil based on ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer), which comprises the following steps: soaking a lithium battery copper foil in a mixed solution of concentrated nitric acid and hydrofluoric acid for high-temperature digestion, adding a scandium internal standard solution, and fixing the volume to obtain a solution to be detected; preparing a mixed standard solution of chromium element and scandium element with a plurality of concentration gradients, and establishing a standard curve through ICP-OES; and determining the content of the chromium element in the to-be-detected solution according to the standard curve. The lithium battery copper foil is digested through a mixed acid system, concentrated nitric acid provides an acid environment and an oxidation effect, hydrofluoric acid promotes dissolution, it is ensured that the copper foil is completely dissolved, and the digestion efficiency is improved; a scandium internal standard method is introduced, a dynamic background correction mode of ICP-OES is adopted, a scandium internal standard element can correct signal fluctuation in a sample introduction process, dual guarantee is formed by the scandium internal standard element and dynamic background correction, interference of a copper matrix on a Cr spectral line is specifically eliminated, and the trace chromium element detection precision is remarkably improved.

The invention discloses an efficient lithium slag solidification and stabilization agent and a preparation method thereof. The efficient lithium slag solidification and stabilization agent comprises the following raw materials in parts by weight: 20-50 parts of lithium slag, 5-10 parts of carbide slag, 8-12 parts of nano silicate, 6-12 parts of slag powder, 3-6 parts of hydroxyapatite, 2-5 parts of bentonite, 4-8 parts of fly ash and 1-3 parts of aluminum sulfate. The method disclosed by the invention has the advantage of environmental protection, and solves the problems that when the existing lithium slag is recycled, the lithium slag is inconvenient to solidify and stabilize, the lithium slag often contains heavy metals, and if the lithium slag is not fixed in a lattice structure through solidification and stabilization technologies, the heavy metals can be leached along with rainwater to enter soil and water, and long-term ecological pollution is caused.

The invention provides a surface modification method for a lithium-rich manganese-based positive electrode material, which comprises the following steps of: washing by using a peroxide-containing aqueous solution, properly increasing the washing temperature (preferably 40-80 DEG C), regulating the reaction pH value to 1-7, accurately controlling the ratio of acidity to free radical oxidation reaction, and optimizing the interface stability, oxygen vacancy density and Li < + > diffusion rate, thereby obtaining the lithium-rich manganese-based positive electrode material. Meanwhile, the dosage of peroxide (preferably persulfate) is reduced, the reaction time is shortened, the modification efficiency is improved, the raw material consumption is reduced, and the production cost is reduced.

The present technology relates to an insulating composition having excellent wet adhesion and a method for preparing the same, and since an insulating coating layer has excellent wet adhesion in a liquid electrolyte, the advantage is that migration of lithium ions in overlapping regions of electrodes can be prevented to suppress capacity expression and the like.

The invention belongs to the technical field of electrochemical energy storage, and relates to a zero-voltage attenuation lithium-rich positive electrode material, a preparation method and application thereof, the chemical general formula is Lix (Li < 1-y-z > Mn < y > Ni < z >) O < 2 >, xlt; 0.85, 0.5 lt; yt; Yt; 0.7, 0.1 lt; zlt, zlt; 0.3 part; the preparation method comprises the following steps: 1, preparing a sodium ion positive electrode precursor; 2, screening a sodium ion positive electrode precursor for the first time; 3, preparing a lithium-rich positive electrode material by combining a molten salt ion exchange method with secondary screening; according to the method, the structure rearrangement reaction occurring in situ during ion exchange is maximized through two screening procedures, so that the finally obtained lithium-rich positive electrode has the zero-voltage attenuation characteristic while having high capacity retention rate, and the long-term voltage attenuation problem of the lithium-rich positive electrode is effectively solved.

The invention provides a positive electrode material and a preparation method and application thereof.The positive electrode material comprises a base body and an island-shaped coating layer arranged on the surface of the base body, and the base body is a lithium ion layered oxide with an O2 phase stacking structure; the coating layer is selected from one or more of oxides of an element M, and the element M is selected from one or more of Al, Mg, Ti, Y, Zr, La, Ce, Pr, Si, Sn, Cu, W, Sm, Gd, In, Zn and Fe. According to the positive electrode material disclosed by the invention, the surface of the lithium ion layered oxide matrix with the O2 phase accumulation structure is coated with the specific island-shaped oxide coating layer, so that the positive electrode material has relatively high specific capacity, structural stability and positive electrode interface stability under high voltage, and further good cycle performance is obtained.

The invention relates to oxyfluoride solid electrolyte as well as a preparation method and application thereof. The general chemical formula of the oxyfluoride solid electrolyte material is Li < x > La < y > M < 1z > M < 2w > M < 3uO6F >, wherein M1 is a tetravalent cation, M2 is a pentavalent cation, and M3 is a hexavalent cation; 1 < x + 3y < 5, 0 < x < = 2, and 1 / 3 < y < 5 / 3; 0 < = z < = 2, 0 < = w < = 2, 0 < = u < = 2, z + w + u = 2; the density of the oxyfluoride solid electrolyte material is greater than 90%, and the purity is greater than 99%; the oxyfluoride solid electrolyte material is prepared from a nanoscale lithium source, a lanthanum source, an M1 source, an M2 source, an M3 source and a composite fluorine source through reaction, and the content of fluorine elements introduced through the composite fluorine source is 0.1%-8% more than the stoichiometric ratio of fluorine required in the oxyfluoride solid electrolyte material. The high-density and high-purity oxyfluoride solid electrolyte material provided by the invention has relatively high volume energy density, relatively low internal resistance and excellent ion conduction performance, is beneficial to improving rate capability, effectively slows down capacity fading and prolongs the cycle life of a battery.

The invention provides a ternary positive electrode precursor material and a preparation method and application thereof. The ternary positive electrode precursor material sequentially comprises a nickel-cobalt-manganese core, a nickel-cobalt-manganese transition layer and a nickel-cobalt-manganese shell from inside to outside, wherein the surface of the nickel-cobalt-manganese core is coated with the nickel-cobalt-manganese transition layer, and the surface of the nickel-cobalt-manganese transition layer is coated with the nickel-cobalt-manganese shell; wherein the nickel-cobalt-manganese core is also doped with a boron element; the molar content of nickel in the surface, close to the nickel-cobalt-manganese core, of the nickel-cobalt-manganese transition layer is smaller than the molar content of nickel in the nickel-cobalt-manganese core, the molar content of nickel in the nickel-cobalt-manganese transition layer is gradually reduced from inside to outside, and the molar content of nickel in the surface, close to the nickel-cobalt-manganese shell, of the nickel-cobalt-manganese transition layer is larger than or equal to the molar content of nickel in the nickel-cobalt-manganese shell; and the molar content of manganese in the nickel-cobalt-manganese shell is the highest. According to the precursor material, the lithium-nickel mixing phenomenon is inhibited, stress cracking easily caused by sudden change of components between the core and the shell from the core to the shell is relieved, the effect of inhibiting the side reaction of an electrolyte is also achieved, and the cycling stability and safety of the battery are improved.

The application provides a leaching agent for removing thallium and beryllium in lithium residue and application. The leaching agent comprises a first leaching agent and a second leaching agent. The first leaching agent is an organic acid solution, the organic acid comprises a carboxyl group, and at least one of a hydroxyl group, a sulfhydryl group, a carbonyl group and a sulfonic acid group; the organic acid is a single organic acid or a mixed organic acid; the second leaching agent comprises a cation agent and a reducing agent, the cation agent can form at least one of K + , NH4 + , Mg 2+ , Na + , Fe 3+ in an aqueous solution, and the reducing agent comprises an inorganic reducing agent and / or an organic reducing agent. The organic acid in the first leaching agent can destroy the crystal structure of the lithium residue, and the groups such as the carboxyl group and the hydroxyl group can complex thallium and beryllium ions to make them more easily leached out. On this basis, the cation and the reducing solution in the second leaching agent accelerate the release of thallium and beryllium through ion exchange and reduction. The above leaching agent can remove thallium and beryllium in the lithium residue at the same time, and has a high removal rate of thallium and beryllium.

The invention provides a lithium-rich disordered rock salt positive electrode material as well as a preparation method and application thereof. The chemical general formula of the lithium-rich disordered rock salt positive electrode material is Li (1 + x) MpNqO (2-y) Xy, 0.3 < = x < = 0.6, p + q = 1, 0.5 < = p < = 0.9, 0.1 < = q < = 0.5, 0 < = y < = 0.4, and M comprises Fe and / or Mn; n comprises any one or a combination of at least two of Zr, Ti, Nb, Mo, W or V; x comprises a polyanionic group. The N element with higher valence is introduced into the lithium-rich disordered rock salt positive electrode material, and meanwhile, the polyanion group is introduced to jointly stabilize the crystal structure, so that the oxygen loss under high voltage is effectively inhibited, and the N element with higher valence can also reduce cation mixing and participate and stabilize the anion redox reaction, so that the lithium-rich disordered rock salt positive electrode material is more stable. The polyanion groups and the transition metal ions form strong covalent bonds, so that the cycling stability of the material is remarkably improved.

The invention belongs to the technical field of geological sample analysis and detection, and particularly discloses a method for measuring the amount of each element of lithium ore in a closed acid-soluble system, and the method comprises the following steps: pretreating the lithium ore; the pretreated lithium ore is weighed and put into a closed sample dissolving device, hydrofluoric acid and purified nitric acid are sequentially added, and the closed sample dissolving device is closed; carrying out heat preservation on the closed sample dissolving device twice to obtain a test solution; and measuring the test solution by using an inductively coupled plasma mass spectrometer to obtain a working curve, and calculating the content of the analysis element in the sample solution by using the working curve. The method for determining the amount of each element in the lithium ore by adopting the closed acid-soluble system has the characteristics of simplicity in operation, high efficiency and good stability, realizes simultaneous determination of the amount of lithium, rubidium, cesium, beryllium, strontium, niobium, tantalum, zirconium, hafnium and rare earth elements in the large-batch lithium ore, and further provides a reference for determination of main trace elements in the lithium ore.

The invention relates to the field of glass, in particular to lithium-free alkali aluminosilicate glass as well as a preparation method and application thereof. According to the glass, SiO2, Al2O3, Na2O, K2O, MgO and ZrO2 serve as main components, the content of Li2O is lower than 100 ppm, a nitrate-sulfate-carbon powder composite clarifying agent is adopted, the number of bubbles and the content of residual sulfur are effectively reduced, and use of a toxic or ultraviolet absorption type clarifying agent is avoided. ZrO2 is obtained by calcining a zirconium-based metal-organic framework material and is good in dispersity, and the devitrification resistance is improved. During float forming, through micro-positive pressure, high-purity protective atmosphere and four-zone gradient temperature control, the tin penetration depth is controlled within 15 microns, and the surface tin content is smaller than or equal to 4 micrograms / cm < 2 >. The obtained glass has high light transmittance, high hardness and excellent chemical strengthening performance, and is suitable for the high-end fields of electronic display cover plates, vehicle-mounted screens, touch panels, photovoltaic substrates and the like.

The invention discloses a multi-element co-coated lithium ion ternary positive electrode material and a preparation method thereof, the multi-element co-coated lithium ion ternary positive electrode material comprises an inner core and a shell, the inner core is a high-nickel ternary positive electrode material NCM, the nickel content is greater than or equal to 80%, and the median particle size D50 of the powder is 6-12 [mu] m; the shell is a composite coating layer and coats the surface of the inner core, the composite coating layer comprises LATP, TiO2 and AlPO4, the total mass of the composite coating layer accounts for 0.5%-3% of the mass of the inner core, and the mass ratio of the LATP to the TiO2 to the AlPO4 is (80%-90%): (12%-6%): (8%-4%). The surface of the ternary material is simultaneously coated with a layer of LATP, TiO2 and AlPO4 spontaneously at one time through a hydrothermal method, so that the contact between the ternary material and an electrolyte is reduced, the surface lithium ion mobility is improved, the polarization is reduced, and the cycling stability and safety of the material are further improved.

The invention discloses a preparation method of sphere-like porous carbon and a silicon-carbon composite material. The preparation method comprises the following steps: uniformly mixing a carbohydrate compound, an inorganic pore-forming agent, a fibrous pore-forming agent and a cross-linking agent solution, spray-drying, carbonizing, activating and pore-forming to obtain secondary particle sphere-like porous carbon, and then depositing nano silicon on the obtained material by a silane cracking method to obtain the silicon-carbon composite material. According to the obtained material, fibrous channels and granular channels in porous carbon are utilized, deposition of nanometer silicon and reduction of expansion are facilitated, meanwhile, a secondary particle structure is adopted, the intercalation and deintercalation path of lithium ions in the charging and discharging process is shortened, and the rate capability is improved.

The invention provides a dark metal modified lithium orthosilicate-based thermochemical heat storage material as well as a preparation method and application thereof, and belongs to the technical field of energy and material science. The components of the heat storage material comprise lithium orthosilicate and dark metal, the proportion of the dark metal in the heat storage material is 2-10 mol%, and the source of the dark metal comprises one or more of manganese dioxide, ferric oxide, nickel oxide and copper oxide. Metal ions introduced into the obtained dark metal modified lithium orthosilicate-based thermochemical heat storage material have the effects of promoting the ion migration rate and resisting material sintering, and specifically, the heat storage density and the cycling stability of the material are remarkably enhanced. In addition, due to the introduction of the dark metal oxide, the color of the heat storage material is remarkably deepened, the solar spectrum absorptivity is greatly improved, the light absorption performance of the material is greatly enhanced, and the heat storage material has higher photo-thermal conversion efficiency and is more suitable for a concentrating solar energy storage system.

The invention provides water pollution detection equipment for lithium extraction waste salt treatment and a solid waste recycling method, and relates to the technical field of water pollution detection, the water pollution detection equipment comprises a mounting rack, an adjusting mechanism, a detection treatment mechanism, a detection mechanism and a moving mechanism; the adjusting mechanism comprises a rotating seat, a sample cup and an adjusting gear, the inner side of the rotating seat is rotatably connected with a rotating rod, and the front end of the rotating rod is fixedly connected with the sample cup. According to the scheme, acidic PH adjusting liquid is added into the sample cup through the liquid inlet pipe, filtrate is adjusted to a fixed PH value and then detected, so that the accuracy of detection data is effectively improved, the sample cup is shaken left and right through cooperation of an adjusting gear and a swing toothed plate, the mixing efficiency of the acidic PH adjusting liquid and the filtrate is improved, and the detection accuracy is improved. By adding the acidic pH adjusting liquid, the EDTA complex is digested and destroyed, metal ions are ensured to be completely free, and the efficiency and effect of subsequent suspended matter and heavy metal detection are improved.

Described herein is a chalcogen-halide solid electrolyte material represented by the following chemical formula: LiAxEyGz, or NaAxEyGz. In embodiments, A denotes one or more elements selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), Lanthanum (La), cerium (Ce), samarium (Sm), and boron (B). In embodiments, E denotes one or more chalcogen elements. In embodiments, G denotes one or more halide elements. In embodiments, the following mathematical formula is satisfied: 0<x<10, 0<y<10, z=nx−2y+1, wherein n=3 when A denotes at least one element selected from the group consisting of La, Ce, Sm, and B, and n=2 when A denotes at least one element selected from the group consisting of Mg, Ca, Sr, and Ba. In embodiments, A is a single element selected from the group consisting of Mg, Ca, Sr, Ba, La, Ce, Sm, or B.

The invention provides a prospecting method for a brine type lithium-potassium-boron ore deposit in a foreland basin carbonate rock stratum. The prospecting method comprises the steps that the type of a metallogenic potential structure unit is determined; determining a mineralization brine supply potential source type; determining the type of a favorable metallogenic structure unit; calculating a construction unit comprehensive evaluation coefficient, and screening favorable exploration construction units; carrying out metallogenic brine carbonate reservoir analysis on the favorable exploration structure unit, and delineating a favorable exploration target area; and performing drilling verification on the favorable exploration target area, and evaluating the economic value of the favorable exploration target area. According to the method, multi-level prospecting prediction from full-basin-scale optimal construction units to local target area fine evaluation is realized, and the exploration efficiency and the success rate of the brine type lithium potassium boron deposit are remarkably improved.

The utility model discloses an oxide and carbon nano tube coated lithium cobalt oxide positive electrode particle which comprises an LCO large particle which is an irregular cube, a plurality of LLZO large particles and a plurality of LLZO small particles are coated on the outer surface of the LCO large particle, and the whole body forms a composite LCO large particle; wherein the large LLZO particles and the small LLZO particles are distributed on the large LCO particles in a convex arc shape; an LLZO dielectric phase layer is formed between the bottoms of the LLZO large particles and the LCO large particles and between the bottoms of the LLZO small particles and the LCO large particles, and the LLZO dielectric phase layer is mainly used for guiding lithium ions and is secondarily used for protecting the LCO large particles; the lithium ion guiding capability of the large LLZO particles and the small LLZO particles is far higher than that of the large LCO particles, and the large LLZO particles and the small LLZO particles are not prone to side reaction with the lithium ions. The large LLZO particles, the small LLZO particles and the large LCO particles are all of a crystal structure. Wherein CNTs of different sizes are arranged on the peripheries of the composite LCO large particles, and the CNTs integrally wrap the composite LCO large particles. The CNT has a short-chain CNT and a long-chain CNT.