1802 results about "Alkali metal" patented technology

The invention discloses an alkali metal liquid drop shaping mechanism and an alkali metal content measuring device and method. The alkali metal liquid drop shaping mechanism comprises a shell, an alkali metal liquid drop quasi-circular shaping system, an alkali metal content analysis system and a control system, wherein the alkali metal liquid drop quasi-circular shaping system is used for driving disorderly distributed alkali metal liquid drops to a certain fixed surface of the air chamber and shaping the shape of the alkali metal liquid drops into a quasi-circular shape; the alkali metal content analysis system comprises a gas chamber analysis chamber, a gas chamber placement block, a digital microscope, an annular light source and a development board, and is used for acquiring a shaped alkali metal liquid drop image and processing the image to obtain required information; and the heating assembly, the refrigerating assembly and the alkali metal content analysis system are respectively connected with the control system in a wired or wireless manner. Quasi-circular shaping and content measurement of the alkali metal liquid drops in the air chamber can be realized, so that a more convenient and lossless air chamber internal alkali metal content testing mode is provided for researchers, and service life information of the alkali metal air chamber is perfected.

The invention discloses an alkali metal ion oxychloride-based solid electrolyte material and a solid-state battery, and belongs to the technical field of solid electrolyte. The chemical general formula of the solid electrolyte material provided by the invention is A < 2-2x > Zr < 1-x > M < 2x > Cl < 6-6x > O < 3x >, wherein A is an alkali metal element Li or Na; m is metal or lanthanide elements of In, Bi, Sb, Ce and La; x is more than 0 and less than or equal to 0.3. The oxychloride-based solid electrolyte is prepared by the following preparation method: respectively weighing precursor ACl, ZrCl4 and M2O3 (A = Li and Na, and M = In, Bi, Sb, Ce and La) powder materials according to the stoichiometric ratio of a general formula, and carrying out one-step high-speed ball milling, so as to prepare target solid electrolyte powder; the method is applied to solid-state batteries. The alkali metal ion oxychloride-based solid electrolyte shows the advantages of high ionic conductivity, wide electrochemical window, air stability, good deformability and the like in a solid-state battery, and has the advantages of low cost, simple synthesis process, easiness in condition control and the like.

The invention discloses a series of alkali metal borate compounds and alkali metal borate crystals as well as a preparation method and application thereof, and belongs to the technical field of photoelectric functional crystal materials. The chemical general formula of the series of compounds and crystals thereof is A3RE (B3O6) 2, wherein A is K, Rb, Cs or NH4; rE = Sc and Y, the molecular weight is 355.93-744.48, the series of crystals belong to a trigonal system, the space group is P321, the cell parameters a = b = 10.5237 (13)-135237 (13), and # imgabs0 # Z = 3. The series of alkali metal borate compounds are synthesized by adopting a solid-phase reaction method or a hydrothermal method, and the series of crystals grow by adopting a high-temperature melt method or a hydrothermal method or a solution method. The series of materials can be used for manufacturing second harmonic generators, upper and lower frequency converters, optical parametric oscillators, polarizing prisms and the like.

The invention relates to a double-pump light semi-transparent and semi-reflective miniaturized triaxial SERF atom magnetometer device, which is characterized in that single pump light is guided into a probe by a polarization maintaining optical fiber; and then one beam of pump light is divided into two beams of circular polarization pump light with the same light intensity by using a half-wave plate, a polarization splitting prism, a right-angle reflector and a quarter-wave plate, and then the two beams of circular polarization pump light vertically pass through the same alkali metal gas chamber. After the pump light penetrating through the air chamber passes through the semi-transparent and semi-reflective flat beam splitter, one half of the pump light is detected by the photoelectric detector and used for extracting magnetic field information, and the other half of the pump light returns to the original path and passes through the alkali metal air chamber for the second time. According to the invention, high-sensitivity simultaneous measurement of a three-axis magnetic field of the miniaturized three-axis SERF atom magnetometer is realized, the atomic spin polarizability is enhanced, the uniformity of the atomic spin polarizability in the air chamber is improved, and the technical problem of spin polarizability uniformity in miniaturized application of the SERF atom magnetometer is solved; and the application of the array type triaxial SERF atom magnetometer in the fields of magnetocardiography, brain magnetism and the like is facilitated.

The invention relates to the technical field of atomic frequency standards, in particular to a miniaturized atomic beam clock physical system and a clock generation method. The atomic beam clock physical system comprises an alkali metal atom emission cavity, an alkali metal raw material block, a microcapillary array, a drift cavity, a multi-layer silicon substrate, a laser, an optical fiber type phase modulator, a beam splitter prism, a plurality of reflectors and a signal detector. Compared with a traditional coherent population detection mode based on a bubble chamber, the chip-scale atomic clock has narrower fluorescence spectrum width and higher long-term frequency stability, meanwhile has the chip-scale capability, and has higher competitiveness compared with an existing chip-scale atomic clock based on an air chamber structure.

A method for producing a pyrochlore-type oxide including, in the composition, a plurality of cations including an alkali metal cation, the method comprising: a mixing step (S10, S20) for mixing a plurality of raw materials each containing a plurality of cations; and a heating step (S11, S21) for heating the mixture containing the plurality of raw materials at a prescribed temperature by using a liquid phase method to generate a composite oxide including, in the composition, at least an alkali metal cation and having a corundum structure.

The invention discloses a miniature microwave electric field intensity measurement method based on Rydberg atoms, and belongs to the field of microwave electric field measurement. The implementation method comprises the following steps: scanning through an alkali metal atom gas chamber by using first probe light, scanning through the alkali metal atom gas chamber by using first coupling light, radiating a microwave electric field to be detected to the alkali metal atom gas chamber, obtaining an EIT-AT split spectrum, and obtaining the microwave electric field to be detected; if the EIT-AT splitting spacing is not available, a local oscillation microwave electric field can be radiated to the alkali metal atom gas chamber at the same time, a microwave electric field to be measured is obtained through an atom superheterodyne method, and rapid measurement of the intensity of the miniaturized microwave electric field based on Rydberg atoms is achieved. The device for realizing the method comprises a first laser, a first dichroscope, an alkali metal atom gas chamber, a second laser, a second dichroscope, a photoelectric detector, a first standard gain horn antenna and a second standard gain horn antenna. Frequency locking does not need to be carried out on detection light and coupling light, light path devices can be reduced, and the application range is wide.

Methods for making titanated silica supports, titanated chromium / silica pre-catalysts, and activated titanated chromium / silica catalysts are disclosed in which hydrogen peroxide and an alkali metal precursor are used during catalyst preparation. Resulting titanated chromium / silica pre-catalysts often contain silica, 0.1 to 5 wt. % chromium, 0.1 to 10 wt. % titanium, and less than or equal to 4 wt. % carbon, and further contain an alkali metal or zinc at a molar ratio of alkali metal:titanium or zinc:titanium from 0.02:1 to 3:1 and / or at an amount in a range from 0.01 to 2 mmol of alkali metal or zinc per gram of the silica. High melt index potential activated titanated chromium / silica catalysts can be used to polymerize olefins to produce, for example, ethylene based homopolymers and copolymers having HLMI values of greater than 30 g / 10 min.

The invention relates to the technical field of batteries, in particular to an electrode film, a preparation method thereof and a battery. The electrode film comprises an active substance, a sulfide solid electrolyte, a conductive agent, a binder and a protective component, wherein at least part of the protection component is located on the surface of the active substance to form a surface protection layer, and / or at least part of the protection component is located on the surface of the sulfide solid electrolyte to form a surface protection layer; the protective component comprises a composite oxide containing alkali metal. A battery includes the provided electrode film. The problems that the sulfide solid electrolyte and the active substance are not matched in structure, poor in interface stability and serious in side reaction in the electrochemical cycle process can be solved, the cycle performance of the battery can be improved, and the comprehensive electrochemical performance of the battery can be improved.

The invention relates to the technical field of hydrogen energy, and provides a vanadium oxide catalytic magnesium-based hydrogen storage material based on alkali metal enhancement and a preparation method. The material is prepared from spherical MgH2 powder and lamellar XV6O15 (at) C powder through a high-energy ball milling method, wherein X is one of alkali metals Li, Na and K. The material has a nanoscale composite structure, and the hydrogen storage performance can be remarkably improved. The preparation method comprises the following steps: 1) preparing XV6O15 (at) C nano powder through acid etching, alkali metal modification and heat treatment; and 2) mixing the powder with MgH2 in a protective atmosphere, and preparing the composite material by adopting high-energy ball milling. Results show that the catalyst improves the hydrogen absorption and desorption rate of MgH2, the hydrogen storage temperature is reduced to 50 DEG C for hydrogen absorption, and the hydrogen is rapidly desorbed at 200-225 DEG C. The hydrogen storage dynamics and temperature performance are remarkably optimized, an effective strategy is provided for design and application of a novel magnesium-based composite hydrogen storage material, and the method is suitable for hydrogen energy industrial application.

The invention relates to a preparation method and system for an atomic gas chamber for sapphire coating, and the preparation method comprises the steps: S1, placing a cleaned atomic gas chamber on a heating base station of a reaction chamber, and filling the reaction chamber with replacement gas to discharge residual gas in the reaction chamber; s2, filling aluminum source gas into the reaction chamber, and carrying out chemical adsorption on the wall surface of the atomic gas chamber to form a first film layer; s3, filling replacement gas into the reaction chamber to discharge residual aluminum source gas in the reaction chamber; s4, filling oxide gas into the reaction chamber to oxidize the first film layer and convert the first film layer into an aluminum oxide film layer; s5, filling replacement gas into the reaction chamber to discharge residual oxide gas in the reaction chamber; and S6, repeating the steps S2 to S5 to form a preset number of aluminum oxide film layers with a preset thickness on the wall surface of the atomic gas chamber so as to form the atomic gas chamber with the sapphire coating film. The anti-shielding capability of the alkali metal atomic gas chamber can be enhanced, and the electromagnetic wave precision measurement performance of the atomic gas chamber is improved.

The invention discloses a medium and low temperature organic sulfur hydrolytic agent applied to coal gas dry purification and a preparation method thereof, and relates to the technical field of coal gas purification and industrial catalysis, the hydrolytic agent comprises the following components: gamma-Al203, pseudo-boehmite, a pore forming agent, an active agent, an auxiliary agent, an adhesive and water. According to the medium-low temperature organic sulfur hydrolytic agent applied to dry purification of coal gas and the preparation method thereof, an alkali metal element is adopted as an active agent, and the characteristic that the alkali metal element can provide a large number of alkaline reaction sites is utilized, so that organic sulfur molecules are promoted to be preferentially adsorbed with the hydrolytic agent to generate hydrolysis reaction; meanwhile, sodium metavanadate is added as an active auxiliary agent, so that the low-temperature activity of the hydrolysis catalyst is further optimized.

The invention discloses a method for synthesizing a CHA molecular sieve from coal gangue, and belongs to the technical field of coal chemical materials. The method comprises the following steps: S1, mixing a silicon source, an aluminum source, a template agent I and water to obtain mixed gel I; s2, heating and crystallizing the mixed gel I in the step S1 under a closed condition to obtain a high-activity crystal nucleus II; s3, mixing the high-activity crystal nucleus II in the step S2 with coal gangue, water, a template agent II and an alkali metal source to obtain gel III; s4, heating and pre-crystallizing the gel III in the step S3 under a closed condition to obtain a pre-crystallized product I; and S5, heating and crystallizing the product I in the step S4 under a closed condition to obtain the CHA powder sieve material. According to the method for synthesizing the CHA molecular sieve from the coal gangue, disclosed by the invention, the CHA molecular sieve product can be rapidly synthesized at high yield by using the low-activity coal gangue as a raw material under the condition of low template agent dosage.

A uranium-based phosphor selected from (i) phosphors having formula I or II:where the phosphor having formula I or II is doped with an activator ion including Pr3+, Sm3+, or mixtures thereof, where 0≤a≤1, 0≤b≤1, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25, 2.5≤p≤3.5, 1.75≤q≤2.25, and 3.5≤r≤4.5; (ii) a phosphor having formula I or II, where the phosphor having formula I or II is doped with an activator ion selected from Eu3+, Pr3+, Sm3+, and mixtures thereof; and a counter ion comprising one or more alkali metal ions; and (iii) phosphors having formula IIIwhere the phosphors having formula III are doped with an activator ion selected from: Eu3+, Pr3+, Sm3+, and mixtures thereof, where A is Li, Na, K, Rb, Cs, or a combination thereof.

According to the SERF magnetic field measuring device closed-loop magnetic compensation method based on double-beam detection, Y-axis direction detection light used for decoupling is added on the basis of X-axis direction detection light, decoupling of three-axis magnetic field signals can be achieved, independent measurement and closed-loop control real-time magnetic compensation of a three-axis magnetic field are achieved, support is provided for further improving compensation precision, and the method is suitable for large-scale popularization and application. Comprising the steps that Y-axis direction detection light penetrating through an alkali metal gas chamber in the Y-axis direction, X-axis direction detection light penetrating through the alkali metal gas chamber in the X-axis direction and pumping light penetrating through the alkali metal gas chamber in the Z-axis direction are arranged in the SERF magnetic field measuring device, the X-axis direction detection light is used for detecting the optical rotation angle, and the Y-axis direction detection light is used for three-axis magnetic field decoupling; the pumping light is used for polarizing atoms in the alkali metal gas chamber; adding a Y-axis calibration signal; controlling the Z-axis coil current to compensate the Z-axis magnetic field according to the Py; controlling the X-axis coil current to compensate the X-axis magnetic field according to the Py; and controlling the Y-axis coil current to compensate the Y-axis magnetic field according to the Px.

The invention provides a method and a system for improving the receiving bandwidth of a very-low-frequency atom magnetometer. The method comprises the following steps of: polarizing alkali metal atoms in an atom gas chamber along the direction of driving laser by using the driving laser; an external magnetic field at the air chamber is compensated through a three-axis magnetic coil and a three-axis magnetic sensor, a zero field environment is provided, and a main magnetic field B is applied by the coil in the direction of driving light; detecting the precession of the spin projection signal of the polarized atom in the x direction by using the detection laser in the x direction; an external very-low-frequency signal interacts with atoms polarized in the z direction to enable the atoms to generate precession signals on the xOy plane, and therefore the external very-low-frequency signal is detected by detection light. After detection optical signals are collected, the control system feeds back the signals to the atom ensemble through the coil in a damping magnetic field mode, the bandwidth of the system is expanded by adjusting feedback parameters, and meanwhile the sensitivity is kept unchanged. According to the technical scheme, the technical problem that high sensitivity and high bandwidth cannot be achieved at the same time in a very-low-frequency atom magnetometer in the prior art is solved.

The invention provides a catalyst for preparing phenol through catalytic hydrogenation of guaiacol as well as a preparation method and application of the catalyst. The preparation method of the catalyst comprises the following steps: fully dissolving magnesium nitrate, P123 and urea in deionized water, carrying out hydrothermal reaction, filtering, washing, drying and roasting to obtain an MgO carrier; immersing the MgO carrier in an alkali metal nitrate aqueous solution, drying and roasting to obtain an alkali metal element loaded MgO carrier; the alkali metal is selected from one of Li, Na, K or Cs; and immersing the alkali metal element loaded MgO carrier in a methanol solution of chloroplatinic acid, removing methanol, drying, and then carrying out reduction treatment to obtain the catalyst. The catalyst disclosed by the invention is applied to catalytic hydrodeoxygenation of guaiacol and shows excellent catalytic performance, the hydrodeoxygenation reaction conditions are mild, and the target product phenol can be obtained with high selectivity and high yield.

The invention discloses a short c-axis flaky mordenite molecular sieve as well as a preparation method and application thereof, and belongs to the technical field of molecular sieves. The chemical composition of the short c-axis flaky mordenite molecular sieve is Ra.Mb. (SixAly) O2, r is a template agent tetraethylammonium ion; a is the mole number of R in each mole of (SixAly) O2, and a is more than or equal to 0.02 and less than or equal to 0.04; m is an alkali metal ion; b is the mole number of M in each mole of (SixAly) O2, and b is more than or equal to 0.02 and less than or equal to 0.06; x is the mole fraction of Si in each mole of (SixAly) O2, and x is more than or equal to 0.9 and less than or equal to 0.97; y is the mole fraction of Al in each mole of (SixAly) O2, y is more than or equal to 0.03 and less than or equal to 0.1, and x + y is equal to 1; and the dimension thickness of the stone molecular sieve in the c-axis direction is 20-80 nanometers. The molecular sieve shows excellent catalytic performance in a catalytic reaction for preparing methyl acetate through dimethyl ether carbonylation.

The invention provides an application method of a multi-active-point pyrenyl fused ring compound in a primary battery, which comprises the following steps: preparing a positive electrode by taking the multi-active-point pyrenyl fused ring compound as a positive electrode active material, and assembling the primary battery by taking alkali metal as a negative electrode and an alkali metal salt solution as electrolyte. The performance of the multi-active-site organic positive electrode material in a primary battery is greatly improved through active substance in-situ carbon loading, a solid polyhydroxy proton donor additive and a liquid proton donor additive. The organic matter is used as a positive electrode, alkali metal is used as a negative electrode, an alkali metal salt solution is used as electrolyte, multi-electron reduction of organic functional groups can be realized in a battery, and the specific capacity and the energy density of the organic electrode material are greatly improved. The organic positive electrode material has the advantages of high energy density, low cost, easiness in large-scale production and the like, and has high application value.

The invention relates to a self-calibration atomic wavelength meter. The self-calibration atomic wavelength meter comprises a saturated absorption spectrum light path for locking a detection laser frequency on a cesium atom energy level transition line based on a saturated absorption spectrum; the double-peak spectrum light path scans the frequency of a coupled laser after the frequency of the detection laser is locked by a saturated absorption spectrum, and when the detection laser and the coupled laser jointly act on alkali metal atoms and are subjected to resonance excitation, an electromagnetic induced transparency effect is generated; when the detection laser is detuned, the detection laser and the combined laser jointly act on the alkali metal atoms to generate non-resonance excitation, a double-peak EIT spectrum with Doppler frequency shift is generated, and the wavelength measurement of the current detection laser can be completed based on the linear relation between the double-peak spectrum interval and the detuning amount of the detection laser. In addition, the double-peak spectrum interval is compared with the atomic energy level transition frequency, the difference between the double-peak spectrum interval and the atomic energy level transition frequency serves as an error signal to be fed back to the control end of the detection laser, the frequency of the detection laser is tuned to the reference frequency standard, and calibration of the wavemeter can be achieved.

This method for producing a halogenated alkene comprises converting a halogenated alkane which has 2-4 carbon atoms and contains a fluorine atom into a halogenated alkene which has 2-4 carbon atoms and contains a fluorine atom in a gas phase in the presence of silicon oxide and an alkali metal element.

The invention relates to a method for producing an alkali metal alcoholate solution L1 in an electrolysis cell E which comprises at least one cathode chamber KK, at least one anode chamber KA, and at least one central chamber KM lying therebetween. The interior IKK of the cathode chamber KK is separated from the interior IKM of the central chamber KM by a separating wall W comprising at least one alkali-cation-conductive solid ceramic electrolyte (=“AFK”) F (e.g. NaSICON). F has the surface OF. A part OA / MK of the surface OF directly contacts the interior IKM, and a part OKK of the surface OF directly contacts the interior IKK. The surface OA / MK and / or the surface OKK comprises at least one part of a surface OFΔ. OFΔ is produced from a pre-treatment step in which F is produced from an AFK F′ comprising the surface OF′. In the pre-treatment step, AFK is removed from F′ by sputtering the surface OF′ using noble gas cations N+, and the AFK F with the surface OF comprising the surface OFΔ formed by the sputtering process is obtained. During the electrolysis process for producing the alkali metal alcoholates with F instead of F′, an improved conductivity is provided, whereby for a constant current density, a lower voltage can be used.

The method for producing a halogenated alkene converts a halogenated alkane having 2 to 4 carbon atoms and containing a fluorine atom into a halogenated alkene having 2 to 4 carbon atoms and containing a fluorine atom in the gas phase in the presence of silicon oxide and an alkali metal element.

The invention provides a relaxation time measuring method and system. The relaxation time measuring method comprises the following steps: heating an atomic gas chamber to be measured to a set working temperature, and applying a static magnetic field in a z direction to the atomic gas chamber to be measured; starting the pumping laser light source and the detection laser light source, and performing light path alignment adjustment; the pumping laser light source is used for polarizing alkali metal atoms in the atomic gas chamber to be measured; determining a relaxation time measurement mode according to a relaxation time measurement requirement, triggering a corresponding operation, and collecting a corresponding relaxation signal; the measurement mode comprises at least one of the following modes: an alkali metal electron spin transverse relaxation mode, an alkali metal electron spin longitudinal relaxation mode, an inert gas nucleon spin transverse relaxation mode and an inert gas nucleon spin longitudinal relaxation mode; and fitting the relaxation signal corresponding to the mode to obtain a corresponding relaxation time value. According to the invention, the transverse and longitudinal relaxation time of alkali metal electrons and the transverse and longitudinal relaxation time of inert gas nucleons can be measured on the same machine.

The invention belongs to the technical field of CO2 electroreduction, and particularly relates to an electrolyte for inhibiting hydrogen evolution side reaction in the CO2 electroreduction process in an acidic medium, the electrolyte is an aqueous solution of an inorganic metal salt with the pH value of 1.95-2.05, cations of the inorganic metal salt are alkali metal cations, anions of the inorganic metal salt are selected from Cl <-> or a mixture of Cl <-> and SO4 < 2->, and the pH value of the aqueous solution is 1.95-2.05. And the concentration of the inorganic metal salt in the electrolyte is 1-3 mol / L. The hydrogen evolution side reaction in the CO2 electroreduction process under the acidic medium is inhibited by adopting Cl <-> or a mixture of Cl <-> and SO4 < 2->, the method has the characteristics of high carbon product selectivity and excellent hydrogen evolution side reaction inhibition effect, and the technical defects of taking SO4 < 2-> as anions in the prior art are overcome.

The invention discloses a battery positive electrode material processability prediction method and application thereof, the prediction method comprises the following steps: S1, obtaining physicochemical property parameters of a positive electrode material, the physicochemical property parameters comprising Dv50 particle size, specific surface area and residual alkali metal salt content of the positive electrode material; calculating a processing value according to the physicochemical property parameters of the positive electrode material and the additive amount of the positive electrode slurry dispersibility improving reagent in combination with a calculation formula; s2, predicting the processing performance of the material according to the processing value: if the processing value is less than or equal to a threshold value, predicting that the positive electrode material has the expected processing performance; and if the processing value is greater than the threshold value, predicting that the positive electrode material does not have the expected processing performance. According to the method, the positive electrode material processability is accurately and reliably predicted by balancing the key intrinsic physicochemical characteristics of the positive electrode material, including the interaction relationship among parameters such as the particle size, the residual alkali metal salt content and the specific surface area.

The invention discloses an iron ore cold-bonded pellet, a raw material for the pellet and a preparation method of the pellet, and belongs to the technical field of cold-bonded pellet preparation. According to the iron ore cold-bonded pellet, pellet raw materials comprise mineral components, Na2O.nSiO2 and CaCl2, the mineral components comprise, by mass, 45-65 parts of sintering return mine and 35-55 parts of magnetite concentrate, and the addition amount of Na2O.nSiO2 and the addition amount of CaCl2 account for (4-5)% and (4-5)% of the total amount of the mineral components respectively. According to the preparation method, the magnetite concentrate and the sintering return mine are compounded, and Na2O.nSiO2 is used as an adhesive, so that the strength of the obtained cold-bonded pellets can be effectively improved; meanwhile, by adding CaCl2, sodium ions of Na2O.nSiO2 can be replaced, and the situation that the content of alkali metal in the pellets is too high is prevented.

The invention relates to the technical field of atomic gas chamber preparation, and discloses atomic gas chamber preparation equipment and method and an atomic gas chamber. The equipment comprises a vacuum box, a wafer bonding machine and an alkali metal injection device, the alkali metal injection device comprises a vacuum pump, an injection valve body, a heating piece, a vacuum firing pin and a vacuum probe row, the alkali metal injection and bonding process is carried out in a vacuum environment, and the situation that oxygen in the atmospheric environment oxidizes alkali metal and influences the quality of an atomic gas chamber can be effectively avoided; and meanwhile, external particulate matters are prevented from contaminating between the gas chamber component and the gas chamber sealing plate to influence the bonding effect and sealing performance, and the leakage rate of the atomic gas chamber can be effectively reduced, that is, the atomic gas chamber prepared by the atomic gas chamber preparation equipment is relatively high in yield and preparation efficiency.

A carbon capture and storage (CCS) material may be synthesized using a wide variety of feedstock from agricultural, forestry, and sanitary wastes. The feedstock is heated under a reaction medium. After adding a solution of an activating alkali metal compound to the feedstock, the feedstock and activating alkali metal compound are heated under flowing gases to form the CCS material. This CCS material may be used and regenerated multiple times, then used as a soil amendment.

The invention discloses a sulfate-series sodium-ion battery positive electrode material with an expanded structure, a preparation method of the sulfate-series sodium-ion battery positive electrode material and a sodium-ion battery. The general formula of the sulfate-series sodium-ion battery positive electrode material is Na < 6-x > L < x > Fe < 5-y > M < y > (SO4) 8, wherein x is more than or equal to 0 and less than or equal to 0.5, y is more than 0 and less than or equal to 0.5, L is an alkali metal element with the same chemical valence as Na, and M is a transition metal element with the same chemical valence as Fe. According to the positive electrode material disclosed by the embodiment of the invention, the sodium ferric sulfate material with an expanded structure is taken as a main phase, and elements with variable radiuses are introduced into sodium sites and iron sites, so that the material further obtains a pore channel structure and defects with proper sizes, a three-dimensional diffusion channel of sodium ions is expanded, and the volume change in an electrochemical cycle process is inhibited; the structural stability of the material is ensured, so that the material shows relatively high gram volume and relatively good rate capability.