63results about "Hybrid capacitor separators" patented technology

To provide a secondary battery in which a short circuit in a gap between a cathode plate and an anode with a separator interposed therebetween can be prevented and a decrease in impregnation properties of an electrolytic solution into a wound electrode body can be suppressed.SOLUTION: A secondary battery according to an embodiment includes: a wound electrode body in which a cathode plate where a cathode active material layer is formed except for cathode current collector foil exposed portions extending along one long side of a band-shaped cathode current collector foil and an anode plate where an anode active material layer 41 is formed except for anode current collector foil exposed portions extending along one long side of a band-shaped anode current collector foil are wound around via a band-shaped separator; a battery case that houses the wound electrode body and an electrolytic solution; a cathode current collector terminal that is electrically connected to a cathode current collector foil portion where the cathode current collector foil exposed portions are collected; an anode current collector terminal electrically connected to an anode current collector foil portion where the anode current collector foil exposed portions are collected; and insulating layers formed in at least one of a region of the cathode current collector foil exposed portions except for the cathode current collector foil portion and a region of the anode current collector foil exposed portions except for the anode current collector foil portion.SELECTED DRAWING: Figure 1

The present invention provides an energy storage device and an energy storage method. [Solution] An energy storage device comprising a unit cell in which an electrode and a counter electrode are stacked along the axial direction and separated from each other, and a restraint 130 including tension members 133, 135 having two opposing sides, wherein the tension members are planar, each side of which is coupled to compression members 132, 134, the compression members are arranged perpendicular to the tension members, and the restraint is configured to maintain a pressure on the unit cell greater than other pressures in two axial directions perpendicular to the axis and perpendicular to each other, (a) during use of the device and (b) in the axial direction, and the restraint is operably coupled to the unit cell.

The present invention relates to an electrolyte solution for an electric double-layer capacitor, containing an additive, and an electric double-layer capacitor using same. The technical subject matter of the present invention provides the electrolyte solution for an electric double-layer capacitor, the solution comprising an electrolyte salt, an organic solvent and an additive, wherein the additive is boron trifluoride (BF3), and a reaction thereof with moisture (H2O), which is present in the electric double-layer capacitor, produces hydrogen fluoride (HF) and removes moisture, thereby allowing the electric double-layer capacitor to have high-temperature stability.

An interlayer for a lithium sulfur battery is provided. The interlayer is produced from an elastic polyelectrolyte liquid (EPL) and a two dimensional conducting material, such as graphene oxide. The EPL is produced from polyphenol, cationic polymer and facilitated ion transport protein. The interlayers are characterised by ion selective transport behaviour and electrocatalytic properties, and separator substrates coated with the interlayer may be usefully incorporated into lithium sulfur batteries.

A non-aqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode having a positive electrode active material layer; a negative electrode having a metal negative electrode substrate and a negative electrode active material layer containing graphite; and a separator disposed between the positive electrode active material layer and the negative electrode active material layer, in which the separator has an air resistance of not less than 125 seconds / 100 mL, and X represented by the following formula (1) is not more than 890. X=PcTcTa / Pa (In formula (1), Pc is a porosity (%) of the positive electrode active material layer, Tc is a thickness (µm) of the positive electrode active material layer, Pa is a porosity (%) of the negative electrode active material layer, and Ta is a thickness (µm) of the negative electrode active material layer.)

The application discloses a ramie fiber diaphragm based on fiber crystalline domain entropy regulation and a preparation method and application thereof, and belongs to the technical field of preparation of cellulose diaphragms for capacitors. The preparation method comprises the following steps: pretreating ramie raw materials by soaking, cooking and cutting to obtain ramie sections, then performing low-temperature beating to maintain high crystallinity of the fibers and realize refinement, forming a suspension slurry, then performing ultrasonic dispersion, screening and dissociation dispersion to obtain uniform fine slurry, and finally performing wet laying molding and freeze drying to obtain the ramie fiber diaphragm which has a three-dimensional interconnected porous structure and high tough mechanical properties. The application fully utilizes the alkaloid characteristics of the ramie fiber to realize alkali-free cooking, and the process is environmentally friendly. Through the synergistic effect of low-temperature beating and freeze drying, the fiber intrinsic toughness is maintained while the multi-stage ion transmission channel is constructed. The obtained diaphragm has excellent air permeability, porosity and mechanical strength.

Disclosed herein are fabric devices, such as fabric supercapacitors, and methods of making and use thereof. For example, disclosed herein are fabric supercapacitors comprising: a first current collector layer comprising a first carbon fiber fabric; a first electrode layer comprising a first fabric; an ion permeable separator layer comprising a third fabric; a second electrode layer comprising a second fabric; and a second current collector layer comprising a second carbon fiber fabric. In some examples, the first fabric comprises a first plurality of fibers comprising a first polymer, a first electrolyte, and a first plurality of activated carbon granules. In some examples, the second fabric comprises a second plurality of fibers comprising a second polymer, a second electrolyte, and a second plurality of activated carbon granules. In some examples, the third fabric comprises a third electrolyte and a third plurality of fibers comprising a third polymer.

To provide, for example, a separator suited to a capacitor that includes cathode foil on which a carbon layer is formed, and a capacitor including the separator.SOLUTION: A capacitor (2) includes anode foil (12), cathode foil (14), and a separator (16) disposed between the anode foil and the cathode foil. The cathode foil includes a carbon layer (20), and the separator is in contact with the carbon layer and has a density [symbol: ρ, unit: g / cm3] that satisfies the following formula: ρ≥4.0×10-3×WPA, where WPA represents the amount of carbon per square centimeter of the separator [unit: μg / cm2].SELECTED DRAWING: Figure 1

This invention relates to a lithium-ion capacitor based on charge injection to regulate the zero-voltage potential and its preparation method. The preparation method includes the following steps: S1, preparing a cathode electrode and an anode electrode; S2, performing electrochemical charge injection pretreatment on the cathode and anode electrodes to regulate the zero-voltage potential of the lithium-ion capacitor to the target zero-voltage potential; S3, assembling a separator, electrolyte, and the cathode and anode electrodes to obtain the lithium-ion capacitor. Compared with the prior art, this invention actively regulates the zero-voltage potential of the positive and negative electrodes through electrochemical charge injection to optimize the potential matching and capacity balance between the anode and cathode. This method can effectively broaden the operating voltage range of the device, suppress side reactions during charging and discharging, and promote the kinetic coordination of the anode and cathode, thereby significantly improving the energy density of the lithium-ion capacitor while maintaining high power density.

Provided are: a separator for an electric power storage device, the separator having high liquid absorption and high strength; and an electric power storage device in which the separator is used. The separator for an electric power storage device includes a microporous membrane (A) containing an inorganic filler and a polyolefin resin. The microporous membrane (A) has a MFR of 0.05-5 inclusive, includes not less than 20 mass % but less than 100 mass % of the organic filler, has an average pore diameter of 100-1500 nm inclusive for the pores in a cross-section ND-MD, and has an air permeability of 340 sec / 100 mL or less.

One embodiment of the present invention, in order to achieve the described technical objective, may provide an energy storage system manufacturing method comprising the steps of: receiving, in a pouch, a lithium electrode assembly comprising a lithium electrode terminal protruding to a first side of the pouch, a negative electrode assembly comprising a negative electrode terminal, a positive electrode assembly comprising a positive electrode terminal, and an electrolyte; doping the negative electrode assembly with lithium by electrically connecting the lithium electrode terminal and the negative electrode terminal; extracting the lithium electrode assembly from the pouch by cutting the pouch along a cut line which is formed so as to be spaced apart from the first side of the pouch at a predetermined interval; and sealing the cut surface of the pouch cut along the cut line.

To provide a nonaqueous electrolyte storage element high in capacity maintenance ratio after a discharge / charge cycle.SOLUTION: A nonaqueous electrolyte storage element comprises: a positive electrode in which a positive electrode potential for a discharge final voltage in ordinary use is less than 3.69 Vvs.Li / Li+ and which contains a lithium transition metal composite oxide including a nickel element; a nonaqueous electrolyte; and a separator in which membrane resistance at 25°C in the state of being impregnated with the nonaqueous electrolyte is 2.5 Ω cm2 or more.SELECTED DRAWING: Figure 1

The application provides a super capacitor, which comprises a shell and a top cover, the top cover is connected to the shell to form a containing cavity, the top cover is provided with a strong current terminal group and a weak current terminal group which are arranged at intervals, the top cover is provided with an insulation isolation structure between the strong current terminal group and the weak current terminal group, the top cover is provided with a through hole, each terminal in each terminal group is arranged in the through hole through an insulation through member, a sealing element is arranged between the insulation through member and the hole wall of the through hole, the top cover is provided with a laminated conductive assembly which comprises a first conductive element, a second conductive element and an insulation partition plate which are arranged in layers, and the strong current terminal group is electrically connected with the laminated conductive assembly. The above structure realizes the partition isolation of the strong current and the weak current, improves the sealing reliability of the terminal through the wall, organizes the current transition path of the laminated conductive assembly to reduce the loop area and the parasitic inductance, reduces the connection voltage drop, improves the anti-interference and assembly consistency, enhances the electric connection stability and the overall reliability under the vibration and thermal cycle conditions.

A microporous polyolefin film in which an orientation parameter value (fMH) of the MD direction and an orientation parameter value (fTH) of the TD direction, measured at 130°C calculated by formulas (1) and (2) using a microscopic Raman spectroscope, are both 1.70 or less. fMH = Ia (MD, 130°C) / Ib (MD, 130°C) <sb / > … formula (1) fTH = Ia (TD, 130°C) / Ib (TD, 130°C) <sb / > … formula (2) Where, Ia is the maximum intensity of the Raman band in a Raman shift band range of 1100-1170 cm-1, Ib is the maximum intensity of the Raman band in a Raman shift band range of 1040-1090 cm-1, Ia (MD, 130°C) and Ib (MD, 130°C) are the maximum intensity of the MD direction measured at 130°C, and Ia (TD, 130°C) and Ib (TD, 130°C) are the maximum intensity of the TD direction measured at 130°C. 　Provided is a microporous polyolefin film having better strength and shrinkage rate than in the prior art.

An ultracapacitor with a molecular sieve material is provided. The ultracapacitor contains a first electrode that includes a first current collector electrically coupled to a first carbonaceous coating, a second electrode that includes a second current collector electrically coupled to a second carbonaceous coating, a separator positioned between the first electrode and the second electrode, and a nonaqueous electrolyte in ionic contact with the first electrode and the second electrode. The ultracapacitor includes a molecular sieve material including a metal aluminosilicate and a binder. The ultracapacitor also includes a housing within which the first electrode, the second electrode, the separator, the nonaqueous electrolyte, and the molecular sieve material are retained.

A composite comprises vertically aligned carbon nanotubes (VACNT) on a substrate and additional disordered carbon deposited on the outer face of the nanotubes. This additional carbon is not amorphous but comprises graphitic domains. This composite can be prepared by a chemical vapor deposition (CVD) process in the presence of a catalyst on a metal substrate at atmospheric pressure. It can be used as an electrode in electronic and electrotechnical devices, such as supercapacitors.

Provided is an electrochemical element with excellent reliability, a method for manufacturing the same, and a module of the electrochemical element.　This electrochemical element is characterized by comprising an exterior body and an electrode layered body sealed within the exterior body, and characterized in that: the electrode layered body includes a first electrode, a second electrode, and an isolation layer interposed between the first electrode and the second electrode; a resin foam sheet is disposed between the electrode layered body and the exterior body; and the electrode layered body is pressed by the foam sheet. This electrochemical element module is characterized by being configured so that: the electrochemical element module accommodates, in a casing, a layered body in which a plurality of the electrochemical elements are layered; and so that the exterior body of each electrochemical element is constituted by a laminate film.

Disclosed in the present application are a separator, a preparation method for a separator, and an electrochemical device. The separator comprises a bonding layer, and a base film and a gel film which are respectively arranged on two sides of the bonding layer. In the present application, the gel film has relatively good ductility and deformation resistance, is not prone to be being pierced or still completely covers a pierced position after being pierced, such that the separator still plays a role in separating positive and negative electrodes; and the base film has relatively good shape-retaining capability and self-supporting performance. The base film and the gel film are respectively provided on the two sides of the bonding layer, such that the gel film and the base film are bonded into a whole under the bonding action of the bonding layer, and thus when there is an external force acting in the vertical direction of the separator, the separator deforms but is not prone to breaking, thereby delaying the breakage of the separator and improving the stability and safety of a battery.

The present invention relates to a polymer P1 comprising monomer units derived from vinylidene fluoride and optionally a comonomer M1 compatible with vinylidene fluoride, and a polymer of formula R 1 R 2 C=C(R 3 )C(O)R monomers M2, in which the substituent R 1 , R 2 and R 3 are independently selected from the group consisting of H and C1-C5 alkyl, R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR', R' is H and a C1-C5 alkyl optionally substituted with one or more -OH groups or a 5- or 6-membered heterocycle containing at least one nitrogen atom in its cyclic chain. 18 and a polymer P2 comprising monomer units derived from a monomer M2 selected from the group consisting of alkyl, wherein the composition has a crystallization temperature Tc<-3.7496x+130, where x is the content by weight of comonomer M1 relative to the total weight of polymer P1, and wherein the composition is in powder form.

The present invention relates to a polymer P1 comprising monomer units derived from vinylidene fluoride and optionally a comonomer M1 compatible with vinylidene fluoride, and a polymer of formula R 1 R 2 C=C(R 3 )C(O)R monomers M2, in which the substituent R 1 , R 2 and R 3 are independently selected from the group consisting of H and C1-C5 alkyl, R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR', R' is H and a C1-C5 alkyl optionally substituted with one or more -OH groups or a 5- or 6-membered heterocycle containing at least one nitrogen atom in its cyclic chain. 18 and a polymer P2 comprising monomer units derived from a monomer M2 selected from the group consisting of alkyl, wherein the composition has a crystallization temperature Tc<-3.7496x+130, where x is the content by weight of comonomer M1 relative to the total weight of polymer P1.

Provided herein is a static energy storage cell, comprising: (i) a first electrode and a second electrode, (ii) an electrolyte system, comprising: a. a membrane comprising a crosslinked hydrophilic polymer hydrated in an aqueous solution, wherein the membrane is located between the first electrode and the second electrode; b. a first electrolyte comprising a first species capable of undergoing a redox reaction at the first electrode, wherein the first electrolyte is located between the membrane and the first electrode; c. a second electrolyte comprising a second species capable of undergoing a redox reaction at the second electrode, wherein the second electrolyte is located between the membrane and the second electrode, wherein the first electrode and the second electrode are carbon electrodes, wherein the first species is a metal species, and wherein the second species is a halogen species. Also provided is a method of manufacturing a static energy storage cell.

To provide a liquid composition for forming an insulating layer that is excellent in dischargeability, continuous dischargeability, and redispersibility, as well as providing an insulating layer with excellent strength. [Solution] Insulating inorganic particles, A dispersant having a carboxyl group or an acid anhydride group, A liquid composition for forming an insulating layer, comprising a binder, The liquid composition for forming an insulating layer is characterized in that the weight-average molecular weight of the binder is 25,000 or more and 80,000 or less.

Problem: To provide a polyamide-imide resin that enables stable spinning of a nanofiber having a small diameter, a polyamide-imide fiber formed from the polyamide-imide resin, and a nonwoven fabric including the polyamide-imide fiber. Solution: A polyamide-imide resin including a constitutional unit derived from an organic acid salt compound.

To provide a sheet-like energy storage device that can be curved or bent in at least one axial direction. do. [Solution] Multiple flexible sheet-like structures, each with one end fixed to a positive electrode tab. A positive electrode and multiple flexible, sheet-like negative electrodes, each with one end fixed to a negative electrode tab. The energy storage element has a positive electrode and a negative electrode, and a plurality of flexible sheet-like separators, and a positive electrode and a negative electrode. The poles overlap alternately with one of the separators in between, and the energy storage element is flexible. It is an energy storage device enclosed in an outer casing.

The present invention relates to binder composition for use in the preparation of components for electrochemical devices comprising at least one fluoropolymer P1 having a peak height ratio R = [I1 / I2]*100 ranging from 2% to 14% wherein I1 is the peak height measured at 4.928 Å + / - 0.055 Å and I2 is the peak height measured at 5.216 Å + / - 0.062 Å, by wide-angle X-ray scattering.

This invention discloses a viologen-based electrochromic polymer, its preparation method, and its applications. The polymer has the chemical structure shown in Formula I. The polymer material of this invention can form a uniform thin film on a conductive substrate surface through electrochemical polymerization. When applied in electrochromic supercapacitors, it can achieve reversible color changes to visually reflect the energy storage state, while also possessing high specific capacitance and good cycle stability. This provides a new material option for the integration and practical application of electrochromic energy storage devices.