21 results about "Lithium electrolyte" patented technology

A lithium sulphur battery comprising a Li anode, a separator between the anode and cathode, a Li-containing electrolyte; and a sulphur-containing cathode; wherein the separator comprises a porous substrate carrying a metal-organic framework comprising at least two different metal ions one of which is an iron ion. Also, a process for the preparation of a cathode material for a Li—S battery comprising nucleating metal ions on a graphene oxide or reduced graphene oxide sheet such that the metal ions are chemically bound to the basal plane of the graphene oxide or reduced graphene oxide sheet; growing a metal-organic framework comprising said chemically bound metal ions by adding a polyfunctional ligand to form a metal organic framework bound to a reduced graphene oxide sheet (MOF@rGO); and infusing elemental sulphur into the metal organic framework to form S-MOF@rGO.

A secondary battery and an electronic apparatus. Specifically, the secondary battery comprises: a positive electrode, a negative electrode, and an electrolyte; the positive electrode comprises a positive electrode current collector and a positive electrode material provided on the positive electrode current collector; the positive electrode material comprises lithium cobalt oxide; the electrolyte comprises methylene methane disulfonate and propenyl-1,3-sultone; relative to 100 parts by mass of the electrolyte, the sum of methylene methane disulfonate and propenyl-1,3-sultone is 0.02 parts by mass to 3.5 parts by mass. The overcurrent and over-temperature safety of the secondary battery are improved.

A battery. The battery comprises a positive electrode sheet and an electrolyte; the positive electrode sheet comprises lithium iron phosphate; the electrolyte comprises vinylene carbonate and a silicon-based fluorophosphate compound represented by formula I: formula I; in formula I, R1, R2 and R3 are each independently selected from any one of H, F, C1-C4 alkyl, C1-C4 fluoroalkyl, C2-C4 alkenyl, C2-C4 fluoroalkenyl, C2-C4 alkynyl, C2-C4 fluoroalkynyl, C5-C7 cycloalkyl, R4 substituted phenyl, and R5 substituted benzyl, and R4 and R5 are each independently selected from any one of C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl, C1-C4 fluoroalkyl, C2-C4 fluoroalkenyl, C2-C4 fluoroalkynyl, and F.

In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to the efficient and rapid synthesis of high-performance sodium ion electrolytes. The electrolytes have the general formula Nau+yNw-yMyLazCl3-vXv. The electrolytes possess superionic conductivity and display a low electronic conductivity, which ensures negligible electron transport contribution to the measured total conductivity and thereby enhancing safety when applied in energy storage devices. The synthesis of the electrolytes is significantly faster when compared to the synthesis of lithium electrolytes and the process can be scalable to produce large amounts of electrolytes.

The invention relates to a secondary battery and an electronic device. Specifically, the secondary battery provided by the invention comprises a positive electrode, a negative electrode and an electrolyte, the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are arranged on the positive electrode current collector; the insulating layer comprises boehmite, the positive electrode material layer comprises lithium iron phosphate and lithium manganate, and the electrolyte comprises lithium difluorophosphate. According to the invention, the floating charging safety of the secondary battery can be improved, and the particle breaking change rate can be reduced.

The utility model relates to the technical field of lithium electrolysis automatic lithium collection structures, in particular to a lithium electrolysis automatic lithium collection structure which comprises an electrolytic tank, the electrolytic tank is used for containing lithium electrolyte, two sliding rails are arranged on one side of the electrolytic tank, the upper ends of the sliding rails are slidably connected with a lithium collection frame plate, two electric telescopic rods are fixedly installed on one side of the electrolytic tank, and the two electric telescopic rods are fixedly connected with the lithium collection frame plate. A groove is formed in one side of the electric telescopic rod, a spring is fixedly installed in the groove, a guide column is fixedly installed on one side of the spring, a scraping plate is fixedly installed on one side of the guide column, a controller is fixedly installed at the front end of the electrolytic tank, and positive plates are arranged on the two sides of the electrolytic tank; a guide plate is fixedly mounted at the rear end of the electrolytic tank, a T-shaped groove is formed in the upper end of the guide plate, and an electric telescopic plate is arranged above the guide plate; according to the automatic lithium collection structure for lithium electrolysis, automatic lithium collection is realized, and the efficiency is high.

Disclosed herein is a battery (e.g., a Li-S battery), comprising: an anode; a cathode comprising sulfur; a Li-containing electrolyte; and a separator between the anode and the cathode, wherein the cathode is coupled to or coated with nanoparticles having a composition according to Formula (I), and / or the separator is coated with nanoparticles having a composition according to Formula (I): Bi x Gd 1-x Fe y Ni 1-y O 3 , wherein 0.50 ≤ x < 1.00 and 0.50 ≤ y < 1.00. Batteries according to the present disclosure show enhanced specific capacity and capacity retention.

The present application relates to the field of lithium ion batteries, and provides a lithium supplement electrolyte, a lithium supplement electrode and a lithium ion battery, all of which comprise a lithium supplement additive; the oxidation of the lithium supplement additive nitrite in the charging process can make lithium ions in the battery insert into the negative electrode, supplement the lithium ions lost in the lithium ion battery due to the formation of a solid electrolyte interface film, and improve the cycle life and capacity of the battery; in addition, the nitrate produced by the decomposition of the nitrite can improve the structure of the solid electrolyte interface film generated subsequently, which is beneficial to improve the cycle life and stability of the battery; in addition, the nitrite of the present application can be produced on a large scale and is cheap, and therefore can be applied to industrial production. Compared with the prior art, the present application has the advantages of improving the cycle life and capacity of the battery and being applicable to industrial production.

The invention belongs to the related technical field of batteries, and discloses a high-concentration electrolyte as well as a preparation method and application thereof. The electrolyte comprises an organic solvent, a lithium salt and a non-lithium electrolyte salt, wherein the cation deposition potential of the non-lithium electrolyte salt is lower than the lithium ion deposition potential; and in the electrolyte, the concentration of the lithium salt is 0.1-1 mol / L, and the concentration of the non-lithium electrolyte salt is 1-6 mol / L. Based on a design strategy of a high-concentration electrolyte of mixed non-lithium metal cations of a potential difference-driven selective ion stabilization mechanism, under the condition of maintaining a low lithium salt concentration, the high-concentration electrolyte of the mixed non-lithium metal cations is obtained; positions of other non-lithium electrolyte salts which are low in cost and rich in resources and have deposition potentials lower than Li < + >-negative electrode reaction potentials are used for replacing part of Li < + > in the high-concentration electrolyte, so that the unique solvation structure advantage of the high-concentration electrolyte is reserved, and meanwhile, side reactions caused by introduction of heterogeneous cations are avoided; therefore, cost optimization and further improvement of battery performance are realized.

The embodiments of the present disclosure relate to a method and compounds for capturing and releasing carbon dioxide. The method comprises heating, and / or pressurizing, or electrolyzing a carbon capture compound that comprises beryllium in order to reduce a carbon dioxide content of a carbon dioxide containing gas.

This invention relates to the field of polyether-based lithium-ion battery electrolytes; it provides a polyether-based lithium-ion battery electrolyte and its preparation method; the invention uses polyethylene oxide and lithium bis(fluorosulfonyl)imide as the main components, combined with dynamic polyether prepolymer and polyether-shelled alumina nanoparticles, controlling the imine bond conversion rate, median particle size D50, organic shell content, and the molar ratio of lithium salt to ethylene oxide units; through anhydrous acetonitrile system slurry preparation, casting, segmented drying, and post-curing, a film-like or coating-like electrolyte is obtained, with a water content not exceeding 500 mg / kg, a total residual organic solvent content not exceeding 1000 mg / kg, and controllable viscosity and thickness, while promoting a reduction in residual epoxy value; it solves the problem of difficulty in balancing viscosity and purity in casting film formation; and is suitable for the large-scale preparation of lithium-ion battery electrolyte membranes.

A lithium-ion battery, and an electric device using the same. The lithium-ion battery comprises a positive electrode, a negative electrode and an electrolyte, wherein an active material of the positive electrode comprises lithium iron manganese phosphate, and the electrolyte comprises a thiophene additive. The chemical structure of the thiophene additive satisfies formula I, wherein at least one group of R1-R4 comprises at least one of an amino, a thienyl, a pyridyl, an acetyl, an amido and an ester group; and the content of the thiophene additive is 0.08-2.80wt% on the basis of the total mass of the electrolyte.

The invention provides a secondary battery and electric equipment. The secondary battery comprises a positive pole piece and an electrolyte, the positive pole piece comprises a positive current collector and a positive active material layer arranged on at least one surface of the positive current collector, the positive active material layer comprises a positive active material, the positive active material comprises lithium iron phosphate, and the lithium iron phosphate comprises secondary particles formed by gathering primary particles. The average particle size of the primary particles is D nm, the specific surface area of the lithium iron phosphate is BET m < 2 > / g, and D / BET is greater than or equal to 2 and less than or equal to 30; the electrolyte comprises an additive and an organic solvent, the additive comprises lithium fluorosulfonate, the mass percentage of the lithium fluorosulfonate in the electrolyte is a%, 0.05 < = a < = 0.5, the organic solvent comprises ethyl propionate, and the mass percentage of the ethyl propionate in the organic solvent is greater than or equal to 30%. The low-temperature discharge performance, the high-temperature storage performance and the high-temperature cycle performance of the secondary battery are improved by matching the proper positive electrode active material and the electrolyte.

A secondary battery and an electronic device. By adjusting the components of a positive electrode and an electrolyte in the secondary battery, the discharge performance is improved. The secondary battery comprises a positive electrode, a negative electrode, and an electrolyte; the positive electrode comprises a positive electrode current collector, and a titanium dioxide material layer and a positive electrode material layer which are disposed on the positive electrode current collector; the positive electrode material layer comprises lithium iron phosphate and lithium manganese oxide, and the electrolyte comprises ethylene glycol bis(propionitrile)ether; the lithium iron phosphate is doped with a boron element, and the lithium manganese oxide is doped with a copper element and a tin element.

A secondary battery and an electronic apparatus. The secondary battery comprises: a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector; and the insulating layer comprises boehmite, the positive electrode material layer comprises lithium iron phosphate and lithium manganate, and the electrolyte comprises lithium difluorophosphate. The present application not only improves the floating charge safety of secondary batteries, but also reduces the rate of particle fragmentation.

The invention discloses a method for recovering lithium from electrolytic aluminum waste residues, which comprises the following steps: finely grinding the electrolytic aluminum waste residues containing lithium fluoride into powder, heating, centrifugally separating to obtain a high-lithium electrolyte solution and a low-lithium electrolyte solution, infiltrating the high-lithium electrolyte solution by using a calcium chloride solution, and carrying out liquid-solid separation on calcium fluoride precipitate; adding ammonium bicarbonate into the leaching mother liquor, and carrying out liquid-solid separation on calcium carbonate precipitates; adding sodium oxalate into the ammonium bicarbonate conversion mother liquor to carry out secondary calcium removal, and carrying out liquid-solid separation on calcium oxalate precipitates; adding sodium carbonate into the calcium precipitation mother liquor, carbonizing and precipitating lithium, performing liquid-solid separation to obtain lithium carbonate precipitate, and drying to obtain battery-grade lithium carbonate. According to the method, the lithium extraction efficiency is high, the cost is low, the purity of the obtained lithium carbonate meets the battery grade requirement, meanwhile, the generated by-product can be used as an industrial raw material, the lithium precipitation mother liquor can achieve zero waste liquid discharge through the double decomposition process, and finally reduction and high-value utilization of the electrolytic aluminum waste residues are achieved.

A lithium metal anode and a lithium secondary battery containing it are provided. The lithium metal anode comprises a lithium metal layer arranged on a current collector and a protective layer arranged on top of the lithium metal layer. The protective layer contains a polymer binder and lithium-conducting particles, and the polymer binder is nonpolar. The polymer binder may not contain fluorine (F). A lithium electrolyte layer within the lithium metal layer may have a thickness of approximately 15 µm or more. The weight ratio of lithium-conducting particles to polymer binder (lithium-conducting particles (wt%) / polymer binder (wt%)) may be approximately 2.0 to 10.0.

The present disclosure provides a lithium-ion battery and an electrical device. The lithium-ion battery includes a positive electrode sheet and an electrolyte. Active material in the positive electrode sheet includes a lithium phosphate positive electrode material and a lithium cobalt nickel manganese oxide. The electrolyte includes a positive electrode film forming agent, a negative electrode film forming agent, and a lithium salt. The lithium salt includes lithium hexafluorophosphate and lithium bisfluorosulfonylimide. The lithium-ion battery satisfies a formula as follows:0.1≤NL×SaltAdd≤0.5⁢9,wherein NL is a mass ratio of the lithium cobalt nickel manganese oxide to the lithium phosphate positive electrode material, Salt is a value of a sum of molar concentrations of the lithium hexafluorophosphate and the lithium bisfluorosulfonylimide in the electrolyte in mol / L, and Add is a mass ratio of the positive electrode film forming agent to the negative electrode film forming agent.

A lithium-ion battery and an electrical device using the same are provided. The lithium-ion battery includes a positive electrode, a negative electrode and an electrolyte. The active material of the positive electrode includes lithium manganese iron phosphate. The electrolyte includes a thiophene-based additive, and the chemical structure thiophene-based additive satisfies the Formula I:where at least one of R1 to R4 includes at least one of an amino group, a thienyl group, a pyridyl group, an acetyl group, an amido group, and an ester group, and the thiophene-based additive is included in an amount ranging from 0.08 wt % to 2.80 wt % based on a total mass of the electrolyte.

The application belongs to the technical field of battery materials, and particularly relates to a modified negative electrode current collector and a preparation method and application thereof. The negative electrode current collector comprises a Li2ZnCu3 alloy. After the Li2ZnCu3 alloy layer is used to modify the negative electrode current collector, the lithium affinity can be significantly improved, the nucleation barrier of lithium can be reduced, the Li2ZnCu3 alloy can be used as a uniform lithium nucleation site, the uniform deposition of lithium can be induced, the growth of dendrites can be inhibited, and the stability of a lithium / electrolyte interface and the cycle efficiency can be improved.

A secondary battery and an electronic device. The secondary battery comprises: a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises a positive electrode current collector as well as a tin oxide material layer and a positive electrode material layer which are arranged on the positive electrode current collector; and the positive electrode material layer comprises lithium iron phosphate and lithium manganate, and the electrolyte comprises 1,3-propane sultone. The structure can improve the floating charging performance of the battery.