129 results about "Fluid electrolytes" patented technology

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.

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.

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.

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.

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.

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 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.

The utility model relates to the technical field of anti-corrosion and anti-scale underground anti-scale tools, and discloses an underground anti-scale tool with an anti-corrosion and anti-scale function, which comprises an outer sleeve, a connector is inserted in the outer sleeve, the bottom of the connector is connected with an anti-corrosion and anti-scale mechanism in a penetrating manner, and the surface of the connector is sleeved with a sealing mechanism. According to the underground anti-scaling tool with the anti-corrosion and anti-scaling functions, through the arrangement of the anti-corrosion and anti-scaling mechanism, when the tool is used, a connector and an anti-scaling pipe are inserted into an outer sleeve, the connector is positioned through limiting bolts on the two sides, then a plurality of annularly-distributed permeation openings are formed in the surface of the anti-scaling pipe, liquid enters the anti-scaling pipe, and the anti-scaling pipe is prevented from permeating the anti-scaling pipe; and the surface of the scale inhibition pipe is coated with the anti-corrosion coating, so that the anti-corrosion performance of the scale inhibition pipe is improved, and the situation that the scale inhibition pipe is soaked in an electrolyte solution such as underground water or well fluid for a long time, and the service life of the scale inhibition pipe is affected is avoided.

In the claimed method, a metal foil forming a first electrical current conductor is provided with openings, which are distributed uniformly on a surface of the metal foil and are arranged with spacings. The metal foil is subsequently brought into contact with a solid electrolyte, and the metal foil perforated in this way is then provided with a polymer coating, with which the free cross-sectional areas of the openings are filled. A thin, dense solid electrolyte layer is subsequently formed, and a layer forming the cathode is then formed on the opposite surface of the solid electrolyte in relation to the first current conductor, or a cathode is integrally bonded to said surface. The cathode is placed in electrically conductive contact with a further metal foil, which forms a second electrical conductor, on the oppositely arranged surface and is ionically conductively infiltrated with a liquid electrolyte, wherein an alkali metal anode is formed on the solid electrolyte in the region of the openings in the metal foil during charging of said electrochemical cells.

An electrochemical reactor, which may be a half-cell of a rechargeable battery, comprises a liquid electrolyte which is pumped through the half-cell and has an electrochemical system in which a solid is deposited at an electrode while electric current is flowing. The liquid comprises a high molecular weight polymer or a viscoelastic surfactant enabling elastic turbulence to occur and the half-cell is configured to compel through flow to make changes in direction, so that elastic turbulence occurs, enhancing mass transport through the liquid and reducing overpotential at the electrode, which enhances uniformity of deposited solid and inhibits parasitic reactions.

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 nonaqueous liquid electrolyte includes a solute, a nonaqueous solvent, and an isophorone diisocyanate component. The isophorone diisocyanate component includes a cis-isophorone diisocyanate compound and a trans-isophorone diisocyanate compound. The mass ratio cis / trans of the cis-isophorone diisocyanate compound to the trans-isophorone diisocyanate compound is 35 / 65 or more and 96 / 4 or less.

This invention relates to a microfluidic method for electrowetting electrode materials of deep-sea high-rate lithium-ion batteries, comprising the following steps: (1) assembling the electrode materials and separator of a lithium-ion battery, and injecting electrolyte after assembly; (2) applying an external electric field between the electrodes to complete the wetting of the lithium-ion battery electrode materials by the electrolyte. This invention employs an electrowetting microfluidic method to apply an external electric field between the electrodes, resulting in an induced electric field in the dielectric layer at the electrode-electrolyte interface. This alters the electrostatic interaction between charged ions in the dielectric layer, thereby improving the wetting ability of the liquid electrolyte within the porous electrode, accelerating the wetting between the positive and negative electrodes and the electrolyte, controlling the uniform wetting distribution of the electrolyte on the electrode sheet, and accelerating the wetting rate of the deep-sea high-rate lithium-ion battery electrode materials. The method of this invention exhibits excellent wetting performance and high efficiency.

The invention provides a half-flow cell for a flow cell of a redox flow battery, the half-flow cell comprising: a flat frame having a through-opening; two or more flat electrode elements separately arranged within the through-opening of the frame, the electrode elements configured to be porous for liquid electrolyte and electrically conducting, each electrode element having a convex quadrilateral form with two opposite long sides and two opposite short sides; a supply channel structure in the frame configured to supply liquid electrolyte to the electrode elements at one of the long sides of each electrode element; and a collection channel structure in the frame configured to collect liquid electrolyte that has flown through the electrode elements at the other one of the long sides of each electrode element.

The invention relates to a device (100) for generating heat, comprising:-a chamber (11) containing a liquid electrolyte (14),-a first electrode (12) in the form of a line, and-a second electrode (13), which extends along a preferably flat surface and is arranged with the first electrode in a structure referred to as a line-plane configuration, the first electrode and the second electrode are at least partially immersed in the liquid electrolyte,-a power supply (16) configured to generate a voltage, preferably in the form of a pulse, between the first electrode and the second electrode, thereby generating a plasma around the first electrode.

Device (1) for heating an electrochemical energy storage device (2) with a fluid electrolyte, in particular a lithium-ion cell or a redox flow cell, wherein the device (1) has a fluid line (4) which fluidly connects a fluid outlet (2a) of the electrochemical energy storage device (2), through which the fluid electrolyte can be discharged from the electrochemical energy storage device (2), with a fluid inlet (2b) of the electrochemical energy storage device (2), through which the fluid electrolyte can be supplied to the electrochemical energy storage device (2), in the form of a circuit, wherein the fluid line (4) is made of an inductively heatable material and is configured to transfer inductively generated heat to the fluid electrolyte and to generate convection of the fluid electrolyte.

The invention belongs to the technical field of aluminum-based primary batteries, and discloses an alkaline ionic liquid electrolyte which is obtained by carrying out coordination reaction on AlCl3, 1-ethyl-3-methylimidazolium chloride and Cl <-> in alkali metal chlorate, the general formula of the raw material component is AaEbXc, A is aluminum chloride, E is 1-ethyl-3-methylimidazolium chloride, and X is alkali metal chlorate; 0.4 < = a < = 0.8, 0.9 < = b < = 1, and 0 < = c < = 0.1. According to the invention, the basic ionic liquid electrolyte is adopted to replace the traditional acidic ionic liquid electrolyte for the first time, the composition of active ions / molecular groups is changed, stable existence of free Cl <-> and alkali metal cations is promoted, and the electrochemical performance of aluminum-carbon fluoride and aluminum-sulfur primary batteries can be remarkably improved; the material shows higher specific discharge capacity, discharge voltage platform and excellent rate capability, and can effectively consider the advantages of high energy density, excellent safety performance, low cost, wide working temperature range and the like.

Provided are a lithium metal battery and a method of preparing the same, the lithium metal battery including a cathode, an anode current collector, and a gel-type polymer electrolyte disposed between the cathode and the anode current collector, wherein the gel-type polymer electrolyte includes a crosslinked polymer and a liquid electrolyte containing an organic solvent and a lithium salt, and the crosslinked polymer is a reaction product of a multifunctional crosslinking agent having three or more functional groups and a (meth)acrylate-based compound having a polyethylene glycol moiety.

To provide a manufacturing method of a lithium ion secondary battery having an increased discharge capacity, excellent cycle characteristics, and light weight.SOLUTION: The present disclosure is a manufacturing method of a lithium ion secondary battery, including: a charge / discharge treatment step of performing a charge / discharge treatment on a first lithium ion secondary battery including a positive electrode having a positive electrode active material layer including a sulfur-modified compound, a first liquid electrolyte, and a negative electrode; and a replacement step of replacing the first liquid electrolyte with a second liquid electrolyte to obtain a second lithium ion secondary battery after the charge / discharge treatment step. In the manufacturing method of the lithium ion secondary battery, the first liquid electrolyte comprises a solvent selected from a group consisting of a saturated cyclic carbonate compound and a saturated chain carbonate compound, the second liquid electrolyte comprises a solvent selected from the group consisting of saturated cyclic ether compounds and saturated chain ether compounds.SELECTED DRAWING: None

The application discloses a kind of multilayer porous semiconductor layer organic electrochemical transistor and preparation method thereof, it is related to the field of flexible organic electrochemical transistor, the application includes substrate layer, electrode layer, semiconductor layer, ion gel layer, electrolyte layer and gate electrode from bottom to top in turn, the electrode layer includes source electrode and drain electrode, by the stacking of porous semiconductor film, form a kind of multilayer porous semiconductor layer, add ion gel layer to accelerate ion penetration speed, drop liquid electrolyte layer, utilize the electrolyte in electrolyte layer and the increased interface contact between ion gel layer realizes high permeability, to prepare organic electrochemical transistor with high transconductance, large drain current and low hysteresis, solve the shortcomings of the output current not ideal caused by insufficient contact between electrolyte layer and semiconductor layer, low permeability in electrochemical transistor and the problem of increased hysteresis caused by multilayer semiconductor layer stacking.

The present disclosure relates to a field of lithium-ion batteries Particularly, the present disclosure relates to a silicon polymer hydrogel composite material for electrode. The present disclosure also relates to a process of preparation of a silicon polymer hydrogel composite material using a sol-gel-polymerization. The present disclosure also provides a silicon polymer hydrogel composite anode electrode and its method of preparation. More particularly, the present disclosure provides a lithium-ion battery. A cycle life analysis of a liquid electrolyte system over 500 cycles at a rate of 0.1 Ag-1 was conducted, achieving a specific capacity of 534mAh g-1. Additionally, the specific capacity of a quasi-solid electrolyte system over 100 cycles at the same rate was investigated, which achieved a capacity of 717 mAh g-1.

A non-aqueous electrolyte secondary battery includes a positive electrode including a positive electrode active material, a separator, a negative electrode facing the positive electrode with the separator interposed therebetween, and a non-aqueous liquid electrolyte, wherein the non-aqueous liquid electrolyte includes a non-aqueous solvent, and 6-alkylthio-1,3,5-triazine-2,4-dithiol; at least a portion of the 6-alkylthio-1,3,5-triazine-2,4-dithiol is dissolved in the non-aqueous solvent; and the alkylthio group at a 6th position preferably has an alkyl group with 1 to 8 carbon atoms.

An electrosynthetic or electrical energy cell is disclosed that includes a first gas diffusion electrode and a second electrode. A spacer, including but not limited to a porous capillary spacer, is at least partially positioned between the first gas diffusion electrode and the second electrode. In one form, the liquid electrolyte is transferred onto a side surface of the separator beyond the electrode. In one example, a liquid electrolyte reservoir is also provided in which the first gas diffusion electrode, the second electrode, and the spacer are positioned outside the liquid electrolyte reservoir. In one example, a liquid electrolyte reservoir includes an aperture for releasing a liquid electrolyte. In another form, an intermediate liquid supply structure is located at least partially between the spacer and the liquid electrolyte reservoir, where the liquid electrolyte is transferred through the intermediate liquid supply structure. Methods of operation and cell stacks are also disclosed.

The invention relates to an all-solid-state photoelectrochemical water decomposition hydrogen production device which comprises a cover plate, an anode frame, a cathode frame and a bottom plate, a proton exchange membrane is arranged on the junction surface of the anode frame and the cathode frame, and the gel electrolyte in the proton exchange membrane is divided into two layers; a cathode layer, a cathode current collector and a bottom plate are sequentially arranged on the bottom surface of the cathode frame; an anode current collector, a photo-anode layer and a cover plate are sequentially arranged on the top surface of the anode frame; a semiconductor film is loaded at the center of the photo-anode layer; a water inlet and a water outlet are respectively formed in the side surfaces of the anode frame and the cathode frame; an oxygen outlet is formed in the cover plate; and a hydrogen outlet is formed in the bottom plate, penetrates through the cathode current collector and the cathode layer and is communicated with the inner cavity of the cathode frame. The problem that liquid electrolyte in a traditional system can leak can be solved, the distance between the photo-anode layer and the cathode layer can be shortened to several millimeters without causing short circuit, and the current density and the conversion efficiency of photoelectrochemical water decomposition are effectively improved.