280 results about "Fluid electrolytes" patented technology

Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and / or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.

A method and apparatus for the electrochemical polishing of metallic workpieces are proposed, wherein an electrolyte medium containing solid granular particles and a liquid electrolyte is placed in a container and conductively connected to a first electrode, wherein the metallic workpiece is conductively connected to a second electrode and immersed in the electrolyte medium in the container, wherein the electrodes are subjected to an electrical voltage such that the first electrode in contact with the electrolyte medium has a negative voltage and the second electrode in contact with the workpiece has a positive voltage, and wherein the workpiece is moved relative to the majority of solid granular particles of the electrolyte medium in order to polish it electrochemically.The invention provides that the polarity of the electrical voltage applied to the electrodes is temporarily reversed at least once, in particular periodically, during the electrochemical polishing of the workpiece, so that the first electrode in contact with the electrolyte medium temporarily has a positive voltage and the second electrode in contact with the workpiece temporarily has a negative voltage.

Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and / or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and / or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and / or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and / or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and / or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and / or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

Described herein are lithium-metal rechargeable electrochemical cells comprising a lithium-metal negative electrode, a positive electrode, and a liquid electrolyte. The liquid electrolyte comprises a core mixture and a diluent. The diluent comprises a fluorinated ether. The core mixture comprises a set of salts and a set of solvents. The set of solvents comprises a pyrrolidinium-containing ionic liquid and a molecular solvent. The molecular solvent is a non-fluorinated ether, for example including but not limited to 1,2-dimethoxyethane. In some examples, the electrolyte further comprises an electrolyte additive, for example including but not limited to tris(trimethylsilyl)phosphate. In some examples, the set of salts comprises one or more imide-containing lithium salts. In some examples, the set of salts comprises lithium bis(fluorosulfonyl)imide and an additional salt and the mole fraction of lithium bis(fluorosulfonyl)imide in the set of salts is 0.5 or greater.

Embodiments described herein relate to electrochemical cells with multiple separators, and methods of producing the same. A method of producing an electrochemical cell can include disposing an anode material onto an anode current collector, disposing a first separator on the anode material, disposing a cathode material onto a cathode current collector, disposing a second separator onto the cathode material, and disposing the first separator on the second separator to form the electrochemical cell. The anode material and / or the cathode material can be a semi-solid electrode material including an active material, a conductive material, and a volume of liquid electrolyte. In some embodiments, less than about 10% by volume of the liquid electrolyte evaporates during the forming of the electrochemical cell. In some embodiments, the method can further include wetting the first separator and / or the second separator with an electrolyte solution prior to coupling the first separator to the second separator.

The invention relates to the technical field of gel electrolyte, in particular to a method for constructing gel electrolyte on the surface of an electrode through in-situ self-initiation and application of the method. The method comprises the following steps: (1) dissolving a zinc salt in water to obtain a liquid electrolyte; (2) uniformly mixing a gel monomer, an initiator, a cross-linking agent and a liquid electrolyte to obtain a precursor solution; and (3) pouring the precursor solution on the surface of the negative electrode of the battery, covering the precursor solution with the positive electrode of the battery, and standing to realize in-situ construction of the gel electrolyte on the surface of the electrode. The solution is gelatinized through reducibility self-initiation of the metal electrode and is constructed on the surface of the electrode in situ, the electrochemical performance of the aqueous zinc metal is remarkably improved, meanwhile, the process steps are reduced, and the cost is reduced.

A system, method, and computer program product for predicting properties of electrolytes in a liquid electrolyte mixture independent of empirical fitting from experimentally measured properties. An example aspect is configured to: validate at least one molecular force field, prepare a liquid electrolyte mixture corresponding to the at least one molecular force field, perform molecular dynamic simulations of the electrolyte mixture, obtain simulated molecular dynamic trajectories from the molecular dynamic simulations, and perform molecular structure analysis to predict ionic conductivity, ion pairing properties, solubility properties, and / or other thermodynamic properties of the liquid electrolyte mixture.

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

An electrochemical cell for a rechargeable battery, where the electrochemical cell includes: an anode including lithium (Li); an anode current collector connected to the anode; a cathode; a cathode current collector connected to the cathode; a separator between the anode and the cathode; and a liquid electrolyte including: a solvent, a Li salt dissolved in the solvent, and a polyvalent metal salt dissolved in the solvent.

Disclosed are a lithium metal battery and a method of manufacturing the same, the lithium metal battery comprising a positive electrode, a negative electrode current collector, and a gel-type polymer electrolyte disposed between the positive electrode and the negative electrode current collector wherein the gel-type polymer electrolyte comprises a cross-linked polymer and a liquid electrolyte comprising an organic solvent and a lithium salt, and the cross-linked polymer is a product of a reaction between a multifunctional cross-linking agent having three or more functional groups and a (meth) acrylate-based compound having a polyethylene glycol moiety.

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.

The invention belongs to the technical field of composite material manufacturing, and discloses a structural battery integrated composite board and a forming method and application thereof. According to the composite board, carbon fiber reinforced materials are adopted as positive and negative electrodes, glass fiber materials are adopted as a diaphragm and an insulating layer, epoxy resin-based solid-state structure electrolyte is adopted as a bonding packaging medium, and a curing agent, ionic liquid, electrolyte lithium salt, nano ceramic particles and other auxiliaries of specific types and proportions are introduced into epoxy resin; the multifunctional modification of the resin matrix is realized. And meanwhile, doping and surface grafting modification are performed on the electrode material, so that the energy density and the mechanical strength of the battery are improved. And further constructing a low-temperature formed metal or carbon-based circuit layer on the outer surface of the structural battery to form an integrated complex comprising the circuit board, the structural battery and the bearing structure. The composite board satisfies dielectric insulation and reliability, realizes integrated energy supply and signal processing, and is widely applied to weight and volume sensitive fields such as aerospace and new energy automobiles.

A method of forming an electrode with multi-dielectric layers includes: forming a metal pattern on a substrate, in which the metal pattern includes a first metal film on the substrate and a second metal film on a top surface of the first metal film, and the first and second metal films have different metal compositions; and anodizing the metal pattern in a liquid electrolyte to form a covering anodized portion which covers an unanodized portion, in which the covering anodized portion includes a sidewall oxide dielectric structure and a top oxide dielectric structure, the sidewall oxide dielectric structure is in contact with a side surface of the unanodized portion, the top oxide dielectric structure is in contact with top surfaces of the unanodized portion and the sidewall oxide dielectric structure, and the sidewall and top oxide dielectric structures have different effective permittivities.

Sensors and related methods for detecting chemicals, gases and molecules using a plurality of electrodes, a liquid mucus based electrolyte and a separator to hold the liquid electrolyte and wet the surface of the first electrode and wet the surface of the second electrode with the liquid electrolyte. One or more electrodes may include a metallophthalocyanine or a metalloporphyrin or a derivative thereof or an electrode may be in electrical contact with a metallophthalocyanine or a metalloporphyrin.

The invention belongs to the field of solid-state batteries, and particularly relates to a solid-state electrolyte with a wide electrochemical window and a solid-state lithium ion battery. According to the solid electrolyte, the metal oxyhalide and the lithium-containing zeolite are subjected to ball milling, so that the solid electrolyte with relatively high ionic conductivity and a wide electrochemical window is obtained. The solid-state electrolyte is prepared into a solid-state electrolyte membrane, the solid-state electrolyte membrane, a positive electrode and a negative electrode are assembled into a solid-state lithium battery, an ionic liquid electrolyte and a polymer monomer are added, and the solid-state lithium battery is obtained through in-situ polymerization. A polymer network exists in the solid-state lithium battery, so that the lithium ion transmission performance in the positive electrode, the negative electrode and the solid-state electrolyte and the interface transmission performance of lithium ions in the positive electrode, the negative electrode and the solid-state electrolyte can be effectively improved, and the solid-state lithium battery has higher discharge capacity and better cycling stability performance.

A gel polymer electrolyte for a lithium battery, including a gel polymer and a liquid electrolyte, and a lithium battery including the same, wherein the liquid electrolyte includes a lithium salt and an organic solvent, and the gel polymer is a crosslinked product of i) a multifunctional acrylic first polymerizable monomer including three of more polymerizable functional groups, and ii) a second polymerizable monomer selected from among urethane-acrylic monomers including two more functional groups.

A lithium secondary battery including a gel polymer electrolyte. The gel polymer electrolyte includes a gel polymer and a liquid electrolyte, wherein the gel polymer is i) a crosslinked product of a multifunctional acryl-based monomer having three or more polymerizable functional groups, or ii) a crosslinked product of a first polymerizable monomer and a second polymerizable monomer, wherein the first polymerizable monomer is a multifunctional acryl-based monomer having three or more polymerizable functional groups, and the second polymerizable monomer is at least one selected from among a urethane acryl-based monomer having two or more polymerizable functional groups and a polymerizable monomer including a perfluoropolyether (PFPE) unit and having two or more polymerizable functional groups, and the liquid electrolyte includes a lithium salt, an organic solvent, and acetonitrile.

The utility model relates to a transport vehicle, and provides an electrolytic aluminum liquid electrolyte transfer vehicle which comprises a vehicle body, a supporting frame hinged to the vehicle body, a driving device, a container hinged to the end, away from the vehicle body, of the supporting frame, a cover body arranged above the container and provided with a downward opening, a supporting rod used for connecting the cover body and the vehicle body, and a pull rope connected with the lower end of the container. The cover body is arranged obliquely above the container, a hinge shaft is arranged at the joint of the vehicle body and the supporting frame, and the driving device is used for driving the supporting frame to rotate along the hinge shaft. The electrolytic aluminum liquid electrolyte transfer trolley disclosed by the utility model can efficiently and safely transport electrolyte.

To provide a hybrid separator and a lithium secondary battery including the hybrid separator.SOLUTION: According to an embodiment, a lithium secondary battery includes: a negative electrode; a positive electrode; a separator that is arranged to between the negative electrode and the positive electrode; and a liquid electrolyte. The separator is a hybrid separator including a porosity base material and a flexibility polymer layer that is arranged on at least one surface of the porosity base material and can perform a lithium ion conduction. A lithium ion conductive level of the hybrid separator is 10-4 to 10-2S / cm. The hybrid separator according to the present disclosure includes the flexibility polymer layer, and thus, realizes a good mechanical strength of the separator, and have an effect for surely reducing generation of a lithium dendrite in a charging and discharging step.SELECTED DRAWING: None

A secondary battery is provided for cycling between a charged and a discharged state, the secondary battery including a battery enclosure, an electrode assembly, carrier ions, a non-aqueous liquid electrolyte within the battery enclosure, and a set of electrode constraints. The set of electrode constraints includes a primary constraint system having first and second primary growth constraints and at least one primary connecting member, the first and second primary growth constraints separated from each other in the longitudinal direction, wherein the primary constraint array restrains growth of the electrode assembly in the longitudinal direction such that any increase in the Feret diameter of the electrode assembly in the longitudinal direction over 20 consecutive cycles of the secondary battery is less than 20%. The set of electrode constraints further includes a secondary constraint system having first and second secondary growth constraints connected by at least one secondary connecting member, wherein the secondary constraint system at least partially restrains growth of the electrode assembly in a second direction upon cycling of the secondary battery.

Solid state batteries having a solid polymer electrolyte (SPE) that replaces a liquid electrolyte between the negative and positive electrode. The SPE is the reaction product of a one-pot polymerization involving a polymer backbone, a Li salt, a plasticizer, and electrolyte additive(s). The electrolyte additive may resolve the anode / electrolyte interfacial corrosive reaction issues to prevent shorting. The negative electrode may be plated with the SPE in the form of an interphase film, which also acts to separate the negative electrode from the positive electrode.

The invention belongs to the technical field of solid-state lithium batteries, and particularly relates to a solid electrolyte-lithium metal electrode interface modification layer and preparation and application thereof. In order to inhibit the growth of lithium dendrites, an interface modification layer is introduced between the solid electrolyte and the lithium metal electrode. The interface modification layer comprises a gel layer and a lithium alloy layer, the gel layer is in contact with the solid electrolyte, and the lithium alloy layer is in contact with the lithium metal electrode; the gel layer comprises carbonate-based liquid electrolyte, an organic polymer monomer, a cross-linking agent, an initiator and metal chloride, and the metal chloride reacts with the lithium metal electrode to generate a lithium alloy layer comprising lithium alloy and lithium chloride. The interface modification layer can be used for assembling the solid-state lithium battery, the compatibility between a solid electrolyte and a lithium metal electrode can be remarkably improved, the interface contact is enhanced, the interface impedance is reduced, the growth of lithium dendrites is inhibited, the cycling stability of the solid-state lithium battery is improved, the preparation process is simple, and large-scale application is easy.

This invention belongs to the field of aluminum-ion battery technology, specifically relating to an aluminum-ion battery based on a biomimetic CNT / Al composite metal anode. It comprises a positive electrode, a non-aqueous aluminum salt-based ionic liquid electrolyte, a separator, and a biomimetic CNT / Al composite metal anode. The biomimetic CNT / Al composite metal anode consists of an aluminum substrate and a three-dimensional continuous electron permeation network formed within the aluminum substrate. The aluminum substrate is a micro / nano-scale aluminum sheet, and the three-dimensional continuous electron permeation network is formed by carboxylated multi-walled carbon nanotubes. The three-dimensional continuous electron permeation network extends to the surface of the biomimetic CNT / Al composite metal anode. Compared with existing technologies, this invention solves the problem that existing technologies cannot simultaneously address the issues of ion mass transfer kinetics and interfacial mechanical stability during long-term cycling. This solution achieves long-term stable cycling of the aluminum-ion battery under harsh conditions by constructing a CNT / Al anode with a carbon nanotube (CNT)-like neural network structure.

The invention belongs to the field of organic electrolytes and potassium ion batteries, and particularly relates to a low-concentration ionic liquid electrolyte for breaking the concentration balance of potassium ions and anions and a high-energy-density potassium ion battery. The potassium ion battery comprises a Prussian blue (PB) positive electrode, an electrolyte and a commercial ferrocene (Fc) negative electrode which is not subjected to any treatment, and the electrolyte is a low-concentration ionic liquid electrolyte (FSI-: K + (3.5 / 0.3 M)) of potassium bis (fluorosulfonyl) imide (KFSI). The low-concentration ionic liquid electrolyte developed by the invention has a high anion: K < + > concentration ratio (3.5: 0.3 M), increases the solvation proportion of rich anions, reduces the dissolution of an Fc organic metal compound, and ensures high interface stability and rapid K < + > storage kinetics of an Fc negative electrode. Meanwhile, the electrochemical window of the low-concentration electrolyte is widened, the PB positive electrode can stably circulate at 1.0-4.4 V, the long-period circulation and excellent rate capability of the PBFc total battery are also realized, and the total battery has the energy density of 246.7 Wh / kg under the current density of 20 mA / g.

The invention relates to a method and a device for electrochemically polishing metal workpieces, wherein an electrolyte medium, which contains solid granular particles and a liquid electrolyte, is added to a container and conductively connected to a first electrode, wherein the metal workpiece is conductively connected to a second electrode and immersed in the electrolyte medium located in the container, wherein the electrodes are applied with an electrical voltage in such a way that the first electrode in contact with the electrolyte medium has a negative voltage and the second electrode in contact with the workpiece has a positive voltage, and wherein the workpiece is moved relative to the plurality of solid granular particles of the electrolyte medium in order to electrochemically polish it. According to the invention, the polarity of the electrical voltage applied to the electrodes, during the electrochemical polishing of the workpiece, is temporarily reversed at least once, in particular periodically, such that the first electrode in contact with the electrolyte medium temporarily has a positive voltage and the second electrode in contact with the workpiece temporarily has a negative voltage.

Provided is a method of producing a lithium ion secondary battery, the method including: a charge and discharge treatment step of subjecting a first lithium ion secondary battery including a positive electrode having a positive electrode active material layer containing a sulfur-modified compound, a first liquid electrolyte, and a negative electrode to charge and discharge treatment; and a replacement step of replacing the first liquid electrolyte with a second liquid electrolyte to provide a second lithium ion secondary battery after the charge and discharge treatment step, wherein the first liquid electrolyte contains a solvent selected from the group consisting of: a saturated cyclic carbonate compound; and a saturated chain carbonate compound, and wherein the second liquid electrolyte contains a solvent selected from the group consisting of: a saturated cyclic ether compound; and a saturated chain ether compound.

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

The invention relates to an electrolysis arrangement comprising an electrolyzer for performing the electrolysis of an electrolyte, wherein a biphasic flow containing a gas flow and a liquid electrolyte flow is produced in the electrolyzer, and a separator downstream of the electrolyzer and comprising a vessel with a receiving chamber for receiving the biphasic flow from the electrolyzer, wherein the separator is configured to separate the gas flow and the liquid electrolyte flow in the receiving chamber. An explosion damper is arranged within the receiving chamber.