64 results about "Electrolyte composition" patented technology

The invention discloses a composite modification film, a lithium metal negative electrode and a preparation method of the lithium metal negative electrode. The composite modified film comprises an organic polymer solid electrolyte, an inorganic solid electrolyte and a film-forming agent, and the mass ratio of the organic polymer solid electrolyte to the inorganic solid electrolyte to the film-forming agent is (10%-35%): (10%-35%): (30%-80%). The composite modified film effectively buffers cyclic stress, prevents early mechanical failure of the protective layer, and realizes mechanical durability of the interface protective layer; the immobilized film-forming agent can be slowly released, so that the continuous and stable repair of SEI is realized, the dynamic repair capability of the whole life cycle is provided, and the efficient cycle life of the battery is greatly prolonged; and the electrolyte does not need to depend on a high-concentration liquid additive, dramatic change of electrolyte components in circulation is avoided, the overall chemical stability of the battery is improved, and the stability of an electrolyte system is guaranteed.

A method for purifying a sulfimine aqueous solution includes a heating step in which a sulfimine aqueous solution containing a sulfimine compound represented by general formula (1) is subjected to a heating treatment. In a method for producing a nonaqueous electrolyte, an electrolyte solvent is added to the sulfimine aqueous solution purified by the purification method and subjected to dehydration. A method for producing an electrolyte composition includes a step of removing an electrolyte solvent from a nonaqueous electrolyte obtained by the production method by distillation. LiN(RSO2)(FSO2) (R represents a fluorine atom, an alkyl group having 1 to 6 carbon atoms, or a fluoroalkyl group having 1 to 6 carbon atoms.)(1).

This invention relates to a gel electrolyte composition and its application. The gel electrolyte composition comprises acrylate monomers, polyethylene oxide, a bifunctional alkoxysilane crosslinking agent, an initiator, a lithium salt, and a solvent, wherein the bifunctional alkoxysilane crosslinking agent is an alkoxysilane with terminal unsaturated bonds. The gel electrolyte composition of this invention has extremely low viscosity, enabling "normal electrolyte injection" indistinguishable from liquid electrolytes, perfectly wetting thick electrodes, seamlessly integrating with existing battery production lines, and showing excellent industrialization prospects.

The present invention relates generally to the field of energy storage devices, and more specifically, to solid electrolyte compositions and methods for producing said solid electrolyte compositions. In one aspect of the invention, the method includes the steps of: mixing a silicon precursor comprising at least one alkoxysilane and an ionic liquid electrolyte comprising an ionicly conductive compound, a solvent, and a metal salt to form a liquid mixture, wherein the solvent comprises an amount of water sufficient to hydrolyze at least a portion of the silicon precursor; adding a halogen-containing organosilicon compound to the liquid mixture; hydrolyzing at least a portion of the silicon precursor by contacting the halogen-containing organosilicon compound with the silicon precursor; reacting the halogen-containing organosilicon compound with the hydrolyzed portion of the silicon precursor to form a gel mixture; and curing, drying, and / or aging the formed gel mixture to form a solid electrolyte composition.

This invention discloses a photolithographically patternable lithium-ion electrolyte, its preparation method, and its applications. The electrolyte is a photolithographically curable lithium-ion electrolyte composition, comprising, by mass percentage, LiTFSI, polyethylene glycol methyl ether methacrylate, bisphenol A ethyl oxide dimethacrylate, fluoroethylene carbonate, succinic acid, 2-hydroxy-2-methyl-1-phenyl-1-propanone (HMPP), 3-(isobutyryloxy)propyltrimethoxysilane, and 2-methyl-2-acrylate-2-hydroxyethyl. This invention also discloses a stepwise preparation method for this composition and its applications in micro-energy storage and ion-electronic devices such as micro solid-state batteries, ion-controlled transistors, and neuromorphic devices. This electrolyte can be patterned at the micro-nano scale using standard photolithography processes, exhibiting excellent lithium-ion conductivity, electrochemical stability, mechanical flexibility, and optical transparency. It also shows good interface compatibility with gold electrodes / silicon wafers, requiring no additional etching or transfer processes. This solves the technical problems of existing solid-state electrolytes being difficult to fabricate at the micro-nano scale and incompatible with microelectronic processes, and has broad application prospects in the fields of micro-nano fabrication and micro-devices.

An electrolyte composition including an aluminum salt, an ionic liquid, and a phthalocyanine coordination compound is provided. The anion of the aluminum salt is F−, Cl−, Br−, I−, BF4−, PF6−, [(CF3SO2)2N]−, CF3SO3−, NO3−, CH3CO2−, SO42−, C2O42−, or [B(C2O4)2]−. The ionic liquid has a structure as shown in formula (I) in the specification. The phthalocyanine coordination compound contains a divalent metal ion. In the electrolyte composition, the weight of the aluminum salt is greater than that of the ionic liquid, and the weight of the ionic liquid is greater than that of the phthalocyanine coordination compound. An aluminum battery containing the electrolyte composition is also provided.

This invention discloses polymers containing monomer units derived from vinylimidazole derivatives and their uses in electrode materials and / or electrolyte compositions, as well as methods for their preparation. Electrode materials, electrodes, and electrochemical cells comprising said polymers are also described, along with their uses.

A battery of the present invention comprises: an anode including lithium metal; a cathode including a cathode active material; and a separator positioned between the cathode and the anode. The separator includes: a base layer; a first electrolyte layer, which is positioned between the base layer and the cathode and includes a first electrolyte composition; and inorganic particles, wherein the first electrolyte composition includes a first binder, a first liquid electrolyte and a first crosslinking agent, the first crosslinking agent including a 1-1 crosslinking agent and a 1-2 crosslinking agent, and the number of crosslinkable functional groups of the 1-1 crosslinking agent can be greater than the number of crosslinkable functional groups of the 1-2 crosslinking agent.

A battery separator and a battery of the present invention may comprise: a base layer; a first inorganic layer positioned on one surface of the base layer and comprising first inorganic particles; a second inorganic layer positioned on the other surface of the base layer and comprising second inorganic particles; and a first electrolyte layer positioned on one surface of the first inorganic layer and comprising a first electrolyte composition, wherein the first inorganic particles may comprise flame-retardant inorganic particles, and the second inorganic particles may comprise lithium ion conductive inorganic particles.

This application relates to a silicon anode battery and an electronic device. The silicon anode battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode active material includes silicon, with a mass percentage of m% in the negative electrode active material layer. The positive electrode includes a positive current collector and a positive electrode active material layer disposed on at least one side of the positive current collector. The area of ​​the negative electrode active material layer is larger than that of the positive electrode active material layer, and the area difference between the two layers is a% of the area of ​​the negative electrode active material layer. The electrolyte contains additives, including silicon-based compounds, with a mass percentage of b% in the electrolyte. Wherein, 0.00002 ≤ b / (m×a) ≤ 3. The solution provided in this application can preferentially construct a stable interface layer in the inactive region of the electrode by synergistically controlling the electrolyte composition and key negative electrode material parameters, significantly suppressing side reactions and thus improving the battery cycle life.

To provide compounds for use as electrode additives or as salts in electrolyte compositions.SOLUTION: This disclosure relates to compounds for use as electrode additives or as salts in electrolyte compositions, and methods of preparing the compounds. Most of the compounds are anions of imidazoles with sulfonyl or carbonyl groups, or anions of other nitrogen-containing groups conjugated with various heterocyclic groups or sulfonyl groups. Also described are several electrochemical cells comprising the compounds as electrode additives or as salts in electrolyte compositions.SELECTED DRAWING: None

Disclosed are an electrolyte composition, a secondary battery including the electrolyte composition, and a method of preparing a secondary battery. The electrolyte composition includes an electrolyte compound, a quaternary ammonium compound including a fluoride, and a solvent.

The present invention provides an electrolyte composition for a lithium secondary battery and a lithium secondary battery comprising the same. The electrolyte composition includes a lithium salt and a non-aqueous organic solvent composed of a first carbonate-based solvent and a second carbonate-based solvent, wherein the second solvent includes a compound of Chemical Formula 1. By adjusting the volume ratio of these solvents and the content of the compound of Chemical Formula 1, the electrolyte achieves improved flame retardancy, prolonged cycle life and high decomposition voltage stability. A lithium secondary battery using such an electrolyte exhibits strong capacity retention, has excellent durability at high temperatures, and has stable performance during high-voltage operation.

Provided is an electrolyte composition for a lithium secondary battery and a lithium secondary battery comprising same. The electrolyte composition includes a non-aqueous organic solvent composed of a first and second carbonate-based solvent, where the second solvent incorporates a compound of Chemical Formula 1, and a lithium salt. By adjusting the volume ratio of these solvents and the content of the compound of Chemical Formula 1, the electrolyte achieves improve flame retardancy, enhanced cycle life, and high decomposition voltage stability. Lithium secondary batteries using this electrolyte demonstrate robust capacity retention, superior durability under elevated temperatures, and stable performance during high-voltage operation.

Described herein are electrochemical methods for producing ammonia. In one aspect, the methods involve introducing nitrogen gas at a pressure higher than ambient pressure into an electrochemical cell comprising an electrolyte composition and applying a current to the electrochemical cell to convert the nitrogen gas to ammonia. In one aspect, the electrolyte composition comprises (i) an organic solvent, (ii) a proton donor, and (iii) a salt of lithium, calcium, magnesium, strontium, yttrium, scandium, zirconium, or any combination thereof. The methods described herein provide increased Faraday efficiency (FE) of ammonia while using less energy (i.e., applied current).

The application discloses a preparation method and device of sodium ion electrolyte, relates to the technical field of sodium ion electrolyte, and comprises a mixing tank, a water suction port is fixedly connected to the outer wall of the mixing tank, a feeding port is arranged at the top of the mixing tank, and a jet mechanism is arranged at the top of the mixing tank. Through the jet mechanism, the solution and sodium salt are fully mixed in a closed environment, the deposition in the solution is effectively broken and the mixing efficiency is improved through the mixing mode of mutual collision, so that the electrolyte composition is uniform and stable, the solution at the bottom of the mixing tank is continuously circulated and sprayed through the water suction port, the problem that the materials stored in the bottom corners and the lower side walls of the traditional stirring device are difficult to be sucked away and the problems of uneven dissolution and low efficiency are avoided, the effective flow area of the water inlet pipe spray flow channel is small, the pressure is increased, the spraying effect is far and the strength is enhanced, the water flow speed is promoted, and the mixing effect of water flow impact is further improved.

The present disclosure relates to a hybrid solid electrolyte (HSE) composition having beneficial characteristics, a process for producing said hybrid solid electrolyte (HSE) and uses thereof.

This application provides an electropolishing method for Invar alloy substrates, specifically tailored to the surface characteristics of Invar alloy substrates thinned by ferric chloride reduction. The method involves using the Invar alloy substrate to be treated as the anode and a pure lead plate as the cathode, simultaneously immersing both the anode and cathode in an electrolytic tank containing an electrolyte for electropolishing. The electrolyte comprises phosphoric acid, sulfuric acid, malic acid, ethylene glycol, sodium dodecylbenzenesulfonate, and deionized water in a volume ratio of 6:1:1:1:0.5:0.5. Electropolishing the Invar alloy substrate thinned by ferric chloride using the above electrolyte composition and ratio yields an Invar alloy substrate with excellent surface quality. After polishing, the surface gloss of the Invar alloy substrate is increased to ≥92 GU, exhibiting a uniform and bright mirror-like effect.

A method for measuring the physical properties of liquid / solid electrolytes, belonging to the field of nonferrous metallurgy, specifically discloses a finite element analysis-assisted thermal analysis method to obtain the thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of liquid / solid electrolytes. The method includes the following steps: measuring the thermal analysis curve of a liquid molten salt sample during cooling using a sensor; simulating the behavior of the thermal analysis curve using a sensor physical model established by finite element analysis; and comparing and analyzing the numerical thermal analysis curve and the measured thermal analysis curve to obtain the corresponding liquid / solid thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of the molten salt system. The method described in this invention can rapidly obtain the thermal conductivity, primary crystallization temperature, molten salt composition, and latent heat of phase transition of solid / liquid inorganic salts and multi-component mixtures, enabling online measurement of relevant physical properties of liquid molten salts and solid electrolytes, and possesses practicality and economy.

The present invention relates to an electrolyte composition comprising a lithium salt, and a charge transfer complex formed from a precursor of said charge transfer complex, electron acceptor, and a precursor of said charge transfer complex, electron donor, said lithium salt being (fluorosulfonyl)(trifluoromethanesulfonyl) lithium imidide LiFTFSI, said precursor of said charge transfer complex, electron acceptor, being benzoquinone or one of its derivatives, and said precursor of said charge transfer complex, electron donor, being hydroquinone or one of its derivatives.It also relates to a process for preparing said electrolyte composition, the use of said electrolyte composition in a rechargeable lithium-metal battery or for the preparation of a solid electrolyte for a rechargeable lithium-metal battery, a solid electrolyte for a rechargeable lithium-metal battery comprising said electrolyte composition, and a rechargeable lithium-metal battery comprising said solid electrolyte. Figure to be published: Figure 1.

The present invention relates to an electrolyte composition comprising a lithium salt, a charge-transfer complex formed from an electron acceptor precursor of the charge-transfer complex and an electron donor precursor of the charge-transfer complex, a film-forming polymer, and a solvent. The invention also relates to a method for preparing this electrolyte composition; the use of the electrolyte composition for preparing a solid electrolyte in the form of a flexible film; a method for preparing a solid electrolyte in the form of a film by applying a coat of the electrolyte composition; the solid electrolyte in the form of a flexible film that can be obtained by implementing this method; a method for producing a rechargeable lithium metal battery comprising such a solid electrolyte; and a rechargeable lithium metal battery comprising the solid electrolyte.

The invention relates to a lithium-ion electrochemical element comprising: a) a positive electrode comprising a lithium phosphate of at least one transition metal operating at a potential greater than or equal to 3.6 V vs. Li+ / Li; b) a negative electrode; c) an electrolyte comprising: - one or more solvents, one being methyl propionate, - one or more diluents selected from a fluorinated alkyl ether, fluorobenzene, 1,2-difluorobenzene and isomers thereof, 1,2,3-trifluorobenzene and isomers thereof, 1,2,3,4-tetrafluorobenzene and isomers thereof, pentafluorobenzene, hexafluorobenzene, 2-fluorotoluene and isomers thereof and a mixture thereof, the volume proportion of the one or more diluents representing from 50 to 80% of the total volume of the one or more solvents and the one or more diluents, - lithium bis(fluorosulfonyl)imide, - a negative-electrode passivation additive selected from ethylene monofluorocarbonate and / or vinylene carbonate.

A battery separator and a battery of the present invention comprise: a substrate layer; a first electrolyte layer disposed on one surface of the substrate layer and including a first electrolyte composition; a second electrolyte layer disposed on the other surface of the substrate layer and including a second electrolyte composition; and inorganic particles, wherein the solid content (wt%) of the first electrolyte composition may be greater than the solid content (wt%) of the second electrolyte composition.

This disclosure relates to a hydrogel composition comprising cellulose or a derivative thereof, preferably microcrystalline cellulose, and cork particles, preferably with a particle size of 500 to 800 μm, wherein the ratio of said cellulose to cork particles is 1:1 to 5:1, respectively. Said hydrogel composition has an ionic conductivity of at least 2 mS·cm⁻¹, preferably from 2 mS·cm⁻¹ to 5 mS·cm⁻¹, and more preferably from 2 mS·cm⁻¹ to 4 mS·cm⁻¹. The hydrogel solution can be deposited by 3D printing. Other devices and articles comprising the composition are also disclosed. Methods for obtaining a hydrogel composition and a device are also disclosed.

This invention relates to the field of battery technology, specifically to a battery. The battery includes a positive electrode, a separator, and an electrolyte; the separator includes a carrier layer and a first adhesive layer located on a first surface of the carrier layer, the surface of the first adhesive layer having a plurality of first protrusions; the first adhesive layer faces the positive electrode; the first protrusions include a fluoropolymer; the height h of the first protrusions is 0.2 μm–30 μm; the electrolyte includes organic matter and lithium salt, the organic matter including fluorinated organic matter, including fluorosulfonamide compounds, fluorocarboxylic acid esters, and fluoroethylene carbonate esters; the mass content C of the fluorinated organic matter in the organic matter is 20%–80%; h and C satisfy: C / h is 0.01–3.5. This invention, through the quantitative synergy of the separator surface microstructure and the electrolyte composition, enables the battery to achieve a balance between charge / discharge efficiency, furnace temperature safety performance, and high-temperature performance.

Discussed herein is a technique for electroplating metal onto a substrate that enables the use of an inert anode while maintaining good and stable control over the electrolyte composition. In one aspect, a system for electroplating metal on a substrate is provided that includes an electroplating cell including an anode, where the anode is an inert anode; a cathode chamber configured to expose the substrate to a catholyte; an anode chamber configured to house an anolyte and the anode; a separator separating the cathode chamber from the anode chamber, where the separator permits movement of ions from the anode chamber to the cathode chamber and prevents movement of organic compounds from the cathode chamber to the anode chamber during electroplating; and dosing hardware configured to provide a metal-containing material to the anolyte, where the metal-containing material is a heterogeneous material that includes the metal to be electroplated on the substrate.

This utility model discloses a comparative testing device for electroplating additives, including a main storage tank, a test chamber, and a multi-channel electrode control system. A three-way pipe is provided between the main storage tank and the test chamber, and an electrolyte filtration structure is installed at the outlet end of the main storage tank. This utility model ensures consistent electrolyte composition by connecting the test tanks to the main storage tank via the three-way pipe. Multiple test tanks improve testing efficiency. A stirring shaft and a stirring paddle are installed in the test tanks to ensure uniform mixing of the additives and electrolyte. The electrolyte filtration structure installed at the outlet end of the main storage tank allows for pretreatment of the electrolyte before it enters the test tank, preventing contaminants from entering and improving the accuracy of test data. A filter screen is used to intercept large particulate impurities, and a filter cloth is used to filter fine suspended matter. The filter is connected to a slot via a plug for easy disassembly and cleaning.

The application relates to the field of electrochemistry, in particular to application of halogenated benzene series as electrolyte additives, an electrolyte composition, a solid-state electrolyte film, a preparation method of the solid-state electrolyte film and a full solid-state lithium battery. The full solid-state lithium battery of the application exhibits excellent cycle stability in a room temperature and below environment (<= 30 DEG C): the full solid-state lithium battery of the application can be stably cycled for 420 cycles under the condition of 30 DEG C, 0.1C charging and 0.5C discharging; the full solid-state lithium battery of the application can be stably cycled for 60 cycles under the condition of 20 DEG C, 0.1C charging and 0.1C discharging; the soft package battery exhibits excellent cycle stability at 30 DEG C, still exhibits stable discharging performance under external mechanical abuse (bending, shearing and needle puncture), does not appear to smoke and catch fire, and exhibits excellent safety, and the application provides a new selection for a practical room temperature full solid-state battery system.