319 results about "Electrolyte composition" patented technology

The present disclosure provides a solid electrolyte composition that can suppress deterioration in ion conductivity of an ionic solid electrolyte material. The solid electrolyte composition according to the present disclosure contains a sulfur element-free ionic solid electrolyte material and an organic solvent, where the organic solvent includes at least one selected from the group consisting of a hydrocarbon and a compound having a functional group; and the functional group is at least one selected from the group consisting of an ether group, a halogen group, and a Si—O—C group.

The present disclosure provides a solid electrolyte composition that can suppress deterioration in ion conductivity of an ionic solid electrolyte material. The solid electrolyte composition according to the present disclosure contains a sulfur element-free ionic solid electrolyte material and an organic solvent, where the organic solvent includes at least one selected from the group consisting of a hydrocarbon and a compound having a functional group; and the functional group is at least one selected from the group consisting of an ether group, a halogen group, and a Si—O—C group.

Embodiments relate to an electrolyte composition including a cyclic fluorinated ether diluent configured to configured to control reactions between a metal anode of a metal ion battery and the electrolyte composition. Embodiments further relate to a solid electrolyte interphase (SEI) bilayer formed on a surface of the metal anode and to a metal ion battery including the cyclic fluorinated ether diluent and / or the SEI bilayer.

The present disclosure provides an electrolyte composition containing an organic solvent and a polymer having an ability to conduct alkali metal ions, the electrolyte composition being characterized in that the total number of donors of the organic solvent contained in the electrolyte composition is 16.5 or more (wherein n is the total number of organic solvents contained in the electrolyte composition and is 1 or more, n is an integer of 1 or more, and n is an integer of 1 or more). DNi is the donor number of the ith organic solvent, and fi is the mass fraction of the ith organic solvent.

The present invention pertains to an anode-less lithium ion battery comprising a) a cathode comprising a cathode current collector and a cathode electro-active material on the cathode current collector; b) an anode current collector; c) a liquid electrolyte composition between the a) cathode and the b) anode current collector; and d) a separator, wherein the c) liquid electrolyte composition comprises i) at least 70% by volume (vol %) of a solvent mixture with respect to the total volume of the electrolyte composition, comprising at least one fluorinated ether compound and at least one non-fluorinated ether compound, and ii) at least one lithium salt.

Novel electrolyte compositions for lithium ion energy storage devices with silicon-based electrode materials have improved stability. The electrolyte composition may be used in an energy storage device that includes a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a silicon-based electrode; a separator between the first electrode and the second electrode; and the electrolyte composition.

A solid electrolyte composition including (A) a sulfide solid electrolyte including lithium, phosphorus and sulfur, and (B) one or more compounds selected from the compounds represented by the following formulas (1) to (17).R11R12R13P  (1)(NR21R22)(NR23R24)(NR25R26)P  (2)R31R32R33PS  (3)(NR41R42)(NR43R44)(NR45R46)PS  (4)R51SH  (5)R61COOR62  (6)R71NH2  (7)R81R32R33N  (8)R91(OA)nOH  (9)(R101O)(R102O)(R103O)P  (10)R111R112R113R114M1  (11)R121R122R123M2  (12)R131R132R133M3  (13)R141—C(═O)NH—R142  (14)R151R152R153C—OH  (15)R161—O—R162  (16)(SR171)(SR172)(SR173)P  (17)

The invention relates to the technical field of lithium battery production control, and discloses a production control method for realizing efficient output of lithium battery monomers. The method comprises the following steps: obtaining production batch characteristic data of a lithium battery monomer, the production batch characteristic data comprising an electrode material ratio characteristic and an electrolyte composition characteristic, and extracting a corresponding process parameter configuration set based on the production batch characteristic data; on the basis of the process parameter configuration set, key control nodes in the lithium battery production process are identified, and the key control nodes comprise a material ratio adjusting node and a process parameter switching node; parameter deviation data in the production process are calculated according to the key control nodes, and the parameter deviation data comprise accumulated deviation in the same-batch production process and parameter jump values during cross-batch production; based on the parameter deviation data, a reusable process control parameter set is extracted, and the reusable process control parameter set comprises universal process parameters and special process parameters.

Provided herein is an electrolyte composition for a lithium-ion battery, the composition comprising: (a) 18-35 wt% of lithium salt; (b) 1-25 wt% of solvent additive; and (c) 45-80 wt% of solvent. The total amount of (a), (b) and (c) is less than or equal to 100 wt% of the electrolyte composition. The lithium salt comprises lithium bis(fluorosulfonyl)imide (LiFSI), lithium 4,5-dicyano-2-(trifluoromethyl)imidazole (LiTDI) and lithium difluoro(oxalato)borate (LiDFOB). The solvent additive comprises one or more fluorinated and / or unsaturated carbonate compounds. The solvent comprises a cyclic carbonate. Also provided is an electrochemical cell comprising the electrolyte composition, an electrochemical energy storage device comprising the electrochemical cell, and uses associated with the electrolyte composition.

An electrolyte composition includes: a sulfonylimide compound represented by the following general formula (1) as an electrolyte salt; and an amidosulfuric acid component.LiN(X1SO2)(X2SO2)  (1)(where X1 and X2 are identical to or different from each other, and each represent a fluorine atom, an alkyl group with a carbon number of 1 to 6, or a fluoroalkyl group with a carbon number of 1 to 6).

The invention provides an electrolyte composition, an electrochemical in-situ etching method of non-metallic inclusions for heavy rail steel and application of the electrochemical in-situ etching method. The electrolyte composition comprises the following components in parts by weight: 1.6 to 2.3 parts of lithium chloride, 10 to 13.5 parts of acetylacetone, 45 to 84 parts of methanol and 2 to 43 parts of a reagent A, the reagent A is a mixed aqueous solution of ethylenediamine tetraacetic acid and sodium citrate. The lithium chloride, the acetylacetone, the methanol and the reagent A in specific parts are matched for use, the obtained electrolyte composition is used for in-situ electrochemical etching of the heavy rail steel, and three-dimensional in-situ etching of the non-metallic inclusions in the heavy rail steel can be successfully achieved. The in-situ information of the non-metallic inclusions in the hypereutectoid heavy rail steel is reserved, and the three-dimensional morphology of the non-metallic inclusions can be presented more comprehensively.

The invention relates to the technical field of secondary batteries, and discloses a battery, the bottom layer of a positive plate is rich in a ternary material, the surface layer of the positive plate is rich in lithium cobalt oxide, meanwhile, lithium cobalt oxide particles A exist in a transition region, a specific minimum distance a is maintained between the lithium cobalt oxide particles A and lithium cobalt oxide particles B in a second region, an electrolyte contains a specific content of 1, 3-propane sultone (the content is b wt%), and the content of 1, 3-propane sultone is controlled. The content b of the 1, 3-propane sultone and the content a meet the condition that b / a is more than or equal to 0.02 and less than or equal to 2.9. By optimizing the structural design of the positive electrode active layer and matching specific electrolyte composition, the transmission behavior of lithium ions in the thickness direction of the active layer and the interface electrochemical environment are synergistically improved, and the cycle life of the battery under the conditions of high energy density, high voltage and high temperature is prolonged.

The present invention relates to an electrochemical cell comprising an anode, a polymer electrolyte and an NMC type cathode active material. The polymer electrolyte comprises an electrolyte composition, preferably comprising a deep eutectic solvent (DES), and a polymer network having a polyacrylamide backbone.

Systems and methods are provided for using electrolytic compositions in lithium ion batteries. In one example, an electrolytic composition may include vinylene carbonate, fluoroethylene carbonate, 1,3-propane sultone, ethylene sulfite, and a conducting salt including no less than 80 mol % of lithium bis(fluorosulfonyl)imide. In this way, a capacity retention of the lithium ion battery may be maintained, such as during high-temperature storage at 100% state of charge.

An electrolyte composition for a lithium-ion battery, the composition comprising: (a) 18-35 wt% of lithium salt; (b) 1-25 wt% of solvent additive; and (c) 45-80 wt% of solvent. The total amount of (a)

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 lithium-ion battery with an electrode assembly is shown. The electrode assembly has a current collector and a positive active material layer on the current collector. The electrode assembly also has an electrolyte containing lithium hexafluorophosphate and lithium bis(fluorosulfonyl)imide in a ratio of 0.8 M to 0.2 M and a fluorinated phosphazene additive at 7 wt.% dissolved in a mixed solvent of ethylene carbonate, ethyl methyl carbonate, and sulfolane in a volume ratio of 25 / 73 / 2. The electrolyte permeates a surface of the positive active material layer to suppress electrochemical oxidation of the positive active material layer.

The invention relates to the technical field of all-solid-state lithium batteries, and discloses a high-ionic-conductivity inorganic nanoparticle dispersed polyether composite solid electrolyte composition, which is prepared from the following components in percentage by weight: 35 to 65 percent of inorganic solid electrolyte nanoparticles, 15 to 45 percent of polyether polymer matrix precursor, 2 to 8 percent of cross-linking agent, 10 to 20 percent of lithium salt and initiator, wherein the molar ratio of lithium salt to ether oxygen atoms is 1 / 20, a three-dimensional cross-linked network is constructed through an in-situ ultraviolet polymerization reaction, high-content inorganic nanoparticles are physically locked in a polymer grid, and a continuous ion transmission channel is constructed at room temperature through a percolation effect while particle aggregation is inhibited, so that the high-content inorganic nanoparticles can be prepared. The composition has excellent ionic conductivity and mechanical flexibility, effectively solves the problems of high brittleness and low conductivity of the traditional composite electrolyte, only needs wet coating in the preparation process, and is suitable for large-area film production.

An electrochemical cell has a cathode active material selected from mixed lithium transition metal oxides containing Mn and at least one second transition metal; lithium intercalating mixed oxides containing Ni, Al and at least one second transition metal; and lithium metal phosphates, wherein the outer surface of the particulate cathode active material is at least partially coated with an oxide selected from transition metal oxides, lanthanide oxides, and oxides of metals and half metals of groups 2, 13, and 14 of the periodic system; and an electrolyte composition containing at least one silyl ester phosphonate of formula (I)and at least one silyl ester phosphonate of formula (II)

The present application relates to an electrolyte composition for a lithium secondary battery and a lithium secondary battery comprising the same, the electrolyte composition comprising a lithium salt and an organic solvent. The organic solvent includes a first ether solvent (R-O-R ') having a fluorinated alkyl group, and a second ether solvent. The first ether solvent may be 5-ethoxy-1, 1, 2, 2, 3, 3, 4, 4-octafluoropentane, 1, 1, 2, 2, 3, 3, 4, 4-octafluoro-5-methoxypentane, or a mixture thereof, and the second ether solvent may be selected from the group consisting of dimethoxyethane, diethyl ether, and similar ethers. The lithium salt includes a compound such as LiTFSI, LiFSI, or LiPF6. The first ether solvent accounts for 30% to 90% by volume of the electrolyte, wherein the concentration of the lithium salt ranges from 0.1 M to 3.0 M. The electrolyte composition enhances battery stability and makes it suitable for use in lithium secondary batteries and lithium metal secondary batteries.

The invention relates to an electrochemical cell comprising at least one positive electrode; at least one negative electrode; and an electrolyte composition in contact with the positive and negative electrodes; wherein the positive electrode is produced by a solvent-free process; and the electrolyte composition comprises sulfur dioxide and at least one conducting salt. The present invention further relates to a vehicle comprising the electrochemical cell.

A system and a method for electrodeposition of lithium metal are provided. The system includes a reservoir of electrolyte composition comprising a solvent, a hydrolytically stable lithium salt, a hydrolytically unstable salt, and water, a vessel containing additives, and a power source for electrodepositing a lithium metal. The method includes providing a counter-electrode, providing the electrolyte composition between a substrate and the counter-electrode, and applying a current between the substrate and the counter-electrode to electrodeposit a lithium metal film on the substrate. In various embodiments, the hydrolytically unstable salt, the water, and a second solvent are pre-mixed prior to combining with the hydrolytically stable lithium salt and the solvent to form the electrolyte composition. The additives may include a second hydrolytically unstable salt, a second solvent, and additional amount of water with a sufficient concentration to partially hydrolyze the second hydrolytically unstable salt.

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 disclosure provides: a composition for an electrolyte solution, which can suppress an increase in resistance during low-temperature storage; and an electrochemical device, a secondary battery and a lithium-ion secondary battery, each of which uses this composition for an electrolyte solution. Also provided is a novel composition. More specifically, the present disclosure is a composition for an electrolyte solution, wherein the composition contains a compound (M) represented by formula (M). (M) Rf1 - COOM (In the formula, Rf1 is a 1-6 C fluoroalkyl group, and M is an alkali metal other than Li.)

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.

Degrading PFAS includes generating nanobubbles with a gas in a liquid to produce a nanobubble liquid, combining the nanobubble liquid, the PFAS, and an electrolyte to yield an electrolyte composition, where the PFAS is in liquid form and migrates to a surface of the nanobubbles, and electrolyzing the electrolyte composition in an electrolytic cell including an anode and a cathode in electrical communication, thereby adsorbing the PFAS on a surface of the anode and electrochemically degrading the PFAS.