920results about "Hybrid capacitor separators" patented technology

Provided is a lithium battery, wherein the battery comprises an anode, a cathode, wherein the cathode comprises one or more transition metals, an electrolyte, and a porous separator interposed between the cathode and anode, wherein the separator comprises an anionic compound. Also provided are methods of manufacturing such batteries.

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention provides a full-cement-based supercapacitor and a preparation method thereof, and relates to the technical field of supercapacitors. The full-cement-based super capacitor comprises a first cement-based electrode, a second cement-based electrode, and a foaming cement isolation layer between the first cement-based electrode and the second cement-based electrode. The invention constructs a full-cement type super capacitor with a cement-based electrode and a cement-based diaphragm, and the capacitor is low in cost, has relatively high structural stability, excellent physical performance, high assembly efficiency and good durability, and is expected to be applied to actual engineering.

The invention relates to a regenerated cellulose-based composite metal organic framework diaphragm as well as a preparation method and application thereof. The diaphragm comprises: a substrate, which is made of regenerated cellulose; the surface of the regenerated cellulose is connected with a sulfonic acid group; the sulfonic acid group establishes a 3D sulfonic acid group network on the surface of the regenerated cellulose; the metal organic framework is arranged on the surface of the substrate; the metal organic framework and the regenerated cellulose can be connected at least through electrostatic interaction and coordination bond interaction. The technical problem to be solved is how to provide a composite diaphragm formed by tightly and stably combining regenerated fibers and a metal organic framework, so that the prepared diaphragm is good in mechanical property and electrochemical property.

Provided is an electrolytic capacitor including a capacitor element and a liquid component. The capacitor element includes an anode foil having a dielectric layer on a surface of the anode foil, and a conductive polymer component in contact with at least a portion of the dielectric layer. The conductive polymer component contains a self-doped conductive polymer. A difference ΔHSP1 between a Hansen solubility parameter HSPp of the self-doped conductive polymer and a Hansen solubility parameter HSPe of the liquid component is 9.0 MPa0.5 or more and 11.4 MPa0.5 or less.

Provided is an electrical storage device that is compact and can be manufactured easily, while allowing for use of higher voltages.　In an electrical storage device 1, a winding structure 20 comprises: a central electrode body 21 in which a first extending part 21b and a second extending part 21c extending from either side of a central portion 21a are wound around the central portion in the same direction; a first electrode body 22 electrically connected to a first external terminal 6 and extending toward an outer peripheral side from a vicinity of the central portion; a second electrode body 23 electrically connected to a second external terminal 7 and extending toward the outer peripheral side from a vicinity of the central portion; a first separator 24 disposed between the central electrode body and the first electrode body; and a second separator 25 disposed between the central electrode body and the second electrode body.

A separator for an electrochemical device having a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer includes a dispersing agent, a mixture of inorganic particles and a particle-type binder polymer, and a polyvinyl pyrrolidone binder polymer positioned on the whole or a part of the surface of the inorganic particles in the mixture of the porous coating layer to connect and fix the inorganic particles with one another. The content of the polyvinyl pyrrolidone binder polymer is 2 to 20 parts by weight based on 100 parts by weight of the total content of the particle-type binder polymer and the polyvinyl pyrrolidone binder polymer.

The invention discloses a cylindrical supercapacitor with a positive electrode and a negative electrode located on the same side of a roll core and a processing technology. The cylindrical supercapacitor comprises a shell, the roll core arranged in the shell and a cover plate arranged on the opening side of the shell. A roll core center hole is formed in the center of the roll core, and a negative pole column containing a liquid injection hole is arranged on the cover plate; a positive tab and a negative tab are arranged on the end face, close to the cover plate, of the roll core, surround a center hole of the roll core and are symmetrically arranged, the positive tab and the negative tab are arranged in an annular structure composed of discontinuous arc sections, and the negative tab is located on the inner side of the annular structure. A gap for placing an insulating ring is reserved between the outer edge part of the negative tab and the inner edge part of the positive tab on the outer side of the annular structure; the positive pole lug and the negative pole lug are respectively and correspondingly provided with a positive pole current collecting disc and a negative pole current collecting disc, the positive pole current collecting disc is connected with the upper edge of the slot rolling position on the inner wall of the shell, and the negative pole current collecting disc is connected with a cover plate provided with a negative pole column.

An energy storage module may include first and second energy storage devices each including: an electrode assembly; an external member accommodating the electrode assembly therein; and electrode leads joined to electrodes provided in the electrode assembly, in which the first and second energy storage devices are stacked in a vertical direction V so that a positive electrode lead of the first energy storage device and a negative electrode lead of the second energy storage device are electrically connected to each other.

The present invention provides a separator for power storage devices, the separator having excellent heat resistance and being capable of providing a power storage device with excellent charge and discharge cycle characteristics.　This separator for power storage devices comprises: a multilayer body of a porous base material and a ceramic layer; and a resin layer that is loaded on at least one surface of the multilayer body. The resin layer is configured from a polyether copolymer and / or a crosslinked product of the polyether copolymer. With respect to this separator for power storage devices, the polyether copolymer is composed of 2 to 40% by mole of a repeating unit that is derived from a monomer represented by formula (1), 98 to 60% by mole of a repeating unit that is derived from a monomer represented by formula (2), and 0 to 15% by mole of a repeating unit that is derived from a monomer represented by formula (3); the weight per square meter of the resin layer is 0.4 g / m2 to 3.0 g / m2; and the ratio between the Gurley values before and after loading of the resin layer is 200% or more.

A zinc (Zn) ion hybrid supercapacitor (ZIHSC) in the form of an electrochemical cell includes a Zn nanosheets electrodeposited metal substrate (Zn ED-MS) as an anode, and a jute activated carbon coated conductive carbon substrate (the JAC-CCS) as a cathode, an electrolyte including an aqueous solution of Zn salt at a concentration of 0.05 to 5 molars (M), and a membrane as a separator.

The invention relates to a fluoropolymer coating composition that can be used, for example, in coating electrodes and / or separators in electrochemical devices. The fluoropolymer coating composition preferably contains multiple fluoropolymer phases. The coated electrodes and / or separators have both excellent wet adhesion, excellent dry adhesion, and low leachables. Each of the fluoropolymer phases contains polymers having at least 10 weight percent, of a common fluoromonomer, making the polymer phases compatible with each other, and allowing for the phases to be distributed fairly homogeneously on a macroscopic level throughout the composition and dried coating formed from the composition.

The invention relates to a BMIMCl / polyacrylic acid / tetrachloroquinone (BMIMCl / PAA / TCHQ) ternary deep eutectic gel electrolyte and a preparation method thereof. The BMIMCl / PAA / TCHQ ternary deep eutectic gel electrolyte is further applied to assembly of a high-performance supercapacitor. According to the invention, a deep eutectic solvent formed by BMIMCl and a polyacrylic acid monomer is used as a gel substrate, and an efficient path is provided for ion transmission and diffusion. TCHQ is introduced as a redox additive, so that the specific capacitance is remarkably improved. Wherein the ion transmission performance of the electrolyte is further enhanced by the mutual solubility of the TCHQ and the solvent-free ionic liquid substrate. The double-electrode-layer supercapacitor has excellent electrochemical performance, including high energy density, good cycling stability and excellent flexibility. The problems that a traditional supercapacitor electrolyte, especially an ionic liquid electrolyte, is high in viscosity, prone to liquid leakage, insufficient in energy density and the like are solved, and the method has wide application prospects in the field of energy storage.

A separator and a preparation method thereof, a secondary battery (5), and an electric apparatus are provided. The separator includes a substrate and a coating. The coating is provided on at least one side of the substrate, where the coating includes primary particles and secondary particles, the primary particles being organic particles and the secondary particles having a pore structure. The separator features good heat resistance and ion transport properties and the like, enabling batteries with the separator to improve their thermal safety performance and cycling performance.

A logging system and method for operating a logging system are typically used in a wellbore. The logging system may include a logging instrument including a rechargeable energy storage and logging electronics, and a cable configured to trickle charge the rechargeable energy storage. The rechargeable energy storage may include an ultracapacitor. The rechargeable energy storage may be trickle charged through the cable from a remote power source.

The invention discloses a carbon-based aqueous zinc ion supercapacitor and a preparation method thereof, and belongs to the technical field of zinc ion supercapacitors. The capacitor comprises a positive electrode, a negative electrode, a multi-element electrolyte and a porous diaphragm, the anode is an activated carbon composite material; the negative electrode is a rolled zinc foil; the multi-element electrolyte is a mixed system aqueous solution formed by dissolving zinc trifluoromethanesulfonate, zinc sulfate, zinc chloride, zinc perchlorate and an electrolyte additive in deionized water; and the porous diaphragm is glass fiber. The preparation method comprises the following steps: uniformly mixing the activated carbon composite material, the conductive black and the binder in proportion, adding the organic solvent, grinding into slurry, coating the slurry on the carbon paper, performing vacuum drying to obtain the positive electrode plate, and assembling the positive electrode plate with the multi-element electrolyte, the negative electrode and the porous diaphragm. The raw material cost and the energy consumption are low, the operability is greatly improved, and the repeatability is good.

An electrolytic capacitor includes a capacitor element and a liquid component that contains a non-aqueous solvent. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, a cathode foil, and a separator and a conductive polymer component that are interposed between the anode foil and the cathode foil. The separator contains synthetic resin fibers. The water concentration in the liquid component is 1000 ppm or more and 10000 ppm or less by mass.

The present invention relates to a thermally safe coated separator and its preparation method and application, belonging to the technical field of methods or devices for directly converting chemical energy into electrical energy. The thermally safe coated separator of the present invention includes a separator substrate and a coating provided on at least one surface of the separator substrate; the coating includes a bottom layer in contact with the separator substrate and a surface layer covering the bottom layer; both the bottom layer and the surface layer are mainly composed of an inorganic solid electrolyte and a phase change material, and the mass ratio of the phase change material in the bottom layer is less than its mass ratio in the surface layer. This thermally safe coated separator can not only maintain a high ionic conductivity, but also effectively delay the time of thermal runaway and significantly improve the safety of the battery.

The purpose of the present invention is to provide an adhesive composition for a functional layer of an electrochemical element, said adhesive composition having excellent redispersibility after long-term storage and being capable of causing the functional layer to exhibit excellent adhesiveness. The present invention is a binder composition for a functional layer of an electrochemical element, the binder composition comprising a particulate polymer, a water-soluble polymer, and water, the particulate polymer having a volume particle diameter (D50) of 1.0-15.0 [mu] m and a true specific gravity of 1.00-2.00.

The separator according to the present invention contains a particulate binder resin containing a mixture of an acrylic binder and a PVDF binder in the organic / inorganic composite porous coating layer, and has excellent adhesive strength with the electrode in both dry and wet states. Therefore, in a continuous roll-to-roll process in which an electrode assembly is manufactured by laminating an electrode and a separator, the shape stability and processability of the electrode assembly are improved. In addition, when a battery is manufactured using an electrode assembly including the separator, a high binding strength can be maintained between the separator and the electrode even when the battery is immersed in an electrolyte, and the interface resistance characteristics are not reduced. In addition, since the binder resin particles maintain a high adhesive strength in both dry and wet states, the inorganic particles contained in the organic / inorganic composite porous coating layer are well fixed without being detached, and the shape stability of the separator can be improved. Therefore, the heat resistance safety and insulation properties of the battery are improved. In addition, since the porous coating layer has a porous structure due to the interstitial volume between the particles, it does not interfere with ion conduction between the electrode and the separator, and has a low resistance increase rate and excellent life characteristics.

To provide a power storage module with a novel configuration that can equalize the high-rate resistance of multiple power storage devices.SOLUTION: A power storage module 500 disclosed herein includes a plurality of power storage devices 100. The power storage module 500 includes a low temperature region A1 where the temperature is relatively low and a high temperature region A2 where the temperature is relatively high during charging and discharging of the plurality of power storage devices 100, and among the plurality of power storage devices 100, a first power storage device 110 arranged in the low temperature region A1 has a separator with a higher porosity than a second power storage device 120 arranged in the high temperature region A2.SELECTED DRAWING: Figure 5

Provided is a composition for an electrochemical device functional layer with which it is possible to form a functional layer for an electrochemical device that can impart excellent process adhesiveness and blocking resistance to an electrochemical device member such as an electrode or a separator and that can cause an electrochemical device to display excellent electrochemical characteristics. The composition for an electrochemical device functional layer contains a particulate polymer and a binder. The particulate polymer has a molecular weight distribution (weight-average molecular weight (Mw) / number-average molecular weight (Mn)) of not less than 1.0 and not more than 3.0.

A battery cell assembly, comprises a first electrode; a second electrode; and a separator between the first electrode and the second electrode; wherein: the separator comprises a first layer comprising metal oxide, metal hydroxide, or metal oxyhydroxide particles, the first layer being directly deposited on the first electrode; a thickness of the separator ranges between about 0.5 µm to about 10 µm; the metal oxide, the metal hydroxide, or the metal oxyhydroxide particles comprise a (1) a first set of the metal oxide, the metal hydroxide, or the metal oxyhydroxide particles with a first aspect ratio distribution, and (2) a second set of the metal oxide, the metal hydroxide, or the metal oxyhydroxide particles with a second aspect ratio distribution; the metal oxide, the metal hydroxide, or the metal oxyhydroxide particles of the first set are fiber-shaped and are characterized by diameters in a diameter range from around 3 nm to around 2 µm and aspect ratios in an aspect ratio range from around 4 to around 1,000,000; and the metal oxide, the metal hydroxide, or the metal oxyhydroxide particles of the second set are flakes.

The invention relates to the technical field of capacitors, in particular to a supercapacitor core package, a preparation method thereof and a supercapacitor. The preparation method of the super capacitor core package comprises the following steps: preparing a moisture absorption electrode with the water content of 20%-30%; freezing the moisture absorption electrode to obtain a micro-ice crystal electrode; and drying the micro-ice crystal electrode, winding the micro-ice crystal electrode and a diaphragm to form a super capacitor core cladding intermediate, and fixing the super capacitor core cladding intermediate through an elastic piece to obtain the super capacitor core cladding. According to the super capacitor core package, the tail diaphragm can be prevented from being broken and damaged, the assembled super capacitor is not prone to short-circuit failure, and the self-discharge performance, the high-temperature durability and the cycling stability of the super capacitor core package are superior to those of a super capacitor assembled according to an existing process.

The present application provides an ultra-high molecular weight polyolefin separator comprising ultra-high molecular weight polyethylene, the ultra-high molecular weight polyethylene having an average molecular weight of ≥ 1 million, wherein the ultra-high molecular weight polyolefin separator has a median pore size of 0.04 μm to 1 μm, a maximum pore size not exceeding 1.2 μm, and a puncture strength of ≥ 50 gf. The present application also provides a method for producing the ultra-high molecular weight polyolefin separator, which is safer than conventional nonwoven fabric separators and has higher ionic conductivity and a larger median pore size, thereby solving the problem that conventional nonwoven fabric separators in lithium batteries have high lithium ion permeability but are very dangerous and prone to short-circuiting the battery.

Provided are an electrolyte powder, a sheet, an electrochemical element, and an electric power storage device which can facilitate quality control. The electrolyte powder has a garnet-type crystalline structure containing Li, Zr, and La, and satisfies b*≥2 in chromatic coordinates of CIE 1976 L*a*b* color space. The electrolyte powder optionally satisfies a*≥0, and the chroma represented by c*={(a*)2+(b*)2}1 / 2 optionally satisfies 2≤c*≤10. The sheet, the electrochemical element, and the electric power storage device each include the electrolyte powder.

To provide a separator for a power storage device which has high strength and suppresses clogging due to long-term use.SOLUTION: In a separator for a power storage device including a microporous layer (X) whose main component is polyolefin (A), the melt flow rate (MFR) of the microporous layer (X) at a load of 2.16 kg and a temperature of 230°C is 0.90 g / 10 min or less, and in the MD-TD surface observation or the ND-MD cross-sectional observation of the microporous layer (X) by a scanning electron microscope (SEM), the average long pore diameter of the pore existing in the microporous layer (X) is 100 nm or more.SELECTED DRAWING: None

The invention discloses a high-energy-density graphene composite supercapacitor which comprises a fixed plate, a protective shell is fixedly installed at the top of the fixed plate, a positive plate and a negative plate are arranged on the inner wall of the protective shell, a diaphragm is arranged between the positive plate and the negative plate, and honeycomb holes are formed in the outer surfaces of the positive plate and the negative plate. According to the high-energy-density graphene composite supercapacitor, the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate is selected as the electrolyte, and a proper amount of lithium salt LiBF4 is added, so that the high-energy-density graphene composite supercapacitor has high ionic conductivity and a wide electrochemical window, the energy density and the charge-discharge performance of the supercapacitor can be improved, and meanwhile, the safety is enhanced; and the diaphragm adopts the polypropylene microporous membrane as the diaphragm, and the polypropylene microporous membrane has good chemical stability and mechanical performance, so that the short circuit of the positive electrode and the negative electrode can be effectively prevented, the smooth passing of ions is ensured, and the stable operation of the supercapacitor is ensured.