118results about "Hybrid capacitor electrolytes" patented technology

A technique that can improve ionic conductivity is provided.An electrolyte includes an inorganic composite particle that is a composite of an inorganic particle with a compound having a betaine structure and one or more functional groups selected from a (meth)acryloxy group, a Si(OR)3 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms), and an Al(OR)2 group (R is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms).

A non-aqueous electrolyte solution for a secondary battery, containing a first compound represented by the following Formula (1), a second compound represented by the following Formula (2), a non-aqueous solvent, and an electrolyte.

A method for purifying a sulfimine aqueous solution includes a heating step in which a sulfimine aqueous solution containing a sulfimine compound represented by general formula (1) is subjected to a heating treatment. In a method for producing a nonaqueous electrolyte, an electrolyte solvent is added to the sulfimine aqueous solution purified by the purification method and subjected to dehydration. A method for producing an electrolyte composition includes a step of removing an electrolyte solvent from a nonaqueous electrolyte obtained by the production method by distillation. LiN(RSO2)(FSO2) (R represents a fluorine atom, an alkyl group having 1 to 6 carbon atoms, or a fluoroalkyl group having 1 to 6 carbon atoms.)(1).

The present invention relates to: a nonaqueous electrolyte solution which contains an electrolyte salt and a phosphonic acid ester that is represented by general formula (I), and which satisfies at least one of the condition (A) and the condition (B) described below; and a power storage device which comprises a positive electrode, a negative electrode and the nonaqueous electrolyte solution. (In general formula (I), R1 represents an alkyl group, and each of R2 and R3 independently represents an alkynyl group having 3 to 6 carbon atoms.) Condition (A): In the formula, R1 is an alkyl group having 1 to 5 carbon atoms; at least one selected from among an anion-containing compound having an S=O bond and an S=O group-containing compound (excluding the anion-containing compound having an S=O bond) is additionally contained; and if (A1) is the content of a compound represented by general formula (I) on a mass basis, (A2) is the content of an anion-containing compound having an S=O bond on a mass basis, and (A3) is the content of an S=O group-containing compound on a mass basis, at least one of [(A1) / (A2) is 0.001 to 10], and [(A1) / (A3) is 0.001 to 1.5], is satisfied. Condition (B): In the formula, R1 is a branched alkyl group having 3 to 6 carbon atoms; and a carbon atom adjacent to a phosphorus atom is a secondary carbon atom or a tertiary carbon atom.

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.

A solid electrolyte containing a molecular crystal and a fluorine-containing polymer, the molecular crystal including an organic molecule having at least one kind of atom selected from a sulfur atom, an oxygen atom, a nitrogen atom, and a phosphorus atom, and an alkali metal salt, the solid electrolyte having a diffraction spectrum derived from the molecular crystal in X-ray diffraction.

The application relates to the technical field of battery manufacturing equipment, and particularly discloses a low-temperature lithium ion capacitor electrolyte preparation device, which comprises a bottom plate, the upper surfaces of the two sides of the bottom plate are symmetrically fixedly connected with slide rods. The filling and installation of the electrolyte can be automatically realized through the injection mechanism, the automation degree of the device is greatly improved, the cost is reduced and the efficiency is improved for enterprises, the device can be matched with pipes with different diameters because the diameter of the bottom cover is much larger than that of the closing pipe, the applicability of the device is greatly improved, the problem that the device needs to be frequently replaced when matching pipes with different diameters is avoided, the top of the pipe is automatically sealed when injection is performed, the safety in the injection process is ensured, the safety hidden danger problem caused by electrolyte leakage is avoided, and the isolation effect of the electrolyte can be further improved through the central rod and the closing pipe, and the problem that the electrolyte leaks when not injecting is avoided.

A flexible energy storage device with a glycerol-based gel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the gel electrolyte. The electrolytes can be in gel form, bendable and stretchable in a device. The gel electrolyte can include glycerol, redox-active molybdenum-containing ions, and a secondary ionic substance. The secondary ionic substance can include a salt. The gel electrolyte can have a density of 1.4 to 1.9 g / cm3 and an ionic conductivity of 2.3×10−4 to 3.2×10−4 Scm−1. The flexible energy storage device may retain greater than 95% of an unbent energy storage capacity when bent at an angle of 10 to 170°.

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.

The application belongs to the technical field of zinc-based energy storage devices, and particularly relates to a composite gel layer modified zinc metal electrode, a preparation method thereof and application thereof in zinc-based energy storage devices. Acrylamide, sodium alginate, water, N,N-methylene bisacrylamide and ammonium persulfate are mixed to obtain a mixture; the mixture is applied to the surface of a zinc metal material, and then heat treatment is performed to initiate a polymerization reaction of acrylamide, thereby obtaining an electrode semi-product; a zinc metal salt solution is applied to the surface of the semi-product to initiate a polymerization reaction of sodium alginate, thereby obtaining the composite gel layer modified zinc metal electrode. The composite gel layer modified zinc metal electrode provided by the application exhibits higher cycle stability and a longer service life when applied to aqueous zinc ion hybrid capacitors, zinc ion batteries, gel-state zinc ion capacitors and gel-state zinc ion hybrid capacitors and other energy storage devices.

In order to accumulate more electrostatic capacity by using soil particles, this charging device comprises: a conduction portion in which an electrically conductive substance is mixed into soil particles that contain ions; a plurality of positive electrodes that are provided to the conduction portion; a plurality of negative electrodes that are provided to the conduction portion; and a separator that is provided between the plurality of positive electrodes and the plurality of negative electrodes. The electrically conductive substance and the plurality of positive electrodes are connected, and the electrically conductive substance and the plurality of negative electrodes are connected. When a voltage is applied between the plurality of positive electrodes and the plurality of negative electrodes, negative ions are guided to the plurality of positive electrodes, and positive ions are guided to the plurality of negative electrodes.

A purpose of the present invention is to provide a method for manufacturing, etc., a member for an electrochemical device in which the problem of unavoidable change in the composition of the electrochemical device due to solvent depletion, moisture absorption, etc., during manufacturing of the electrochemical device is unlikely to occur. This method for manufacturing a member for an electrochemical device includes performing at least one molding operation disclosed in the present specification on a formation material composition that: includes at least one filling agent (F), a plasticizer (P-S) that is water, an ionic liquid, or a mixture of these, and a polymer (P1); does not substantially include an organic solvent; and has plasticity and is self-supporting.

This invention provides a novel method for manufacturing fluorinated carboxylate compounds, for producing formula (P1): (B 1f ) mp (A) 1 ) np [B] 1f RfCOO; Rf is a hydrocarbon group having one or more fluorine atoms; A 1 It is a group other than H; mp is (A 1 The valence of () × np and is 1 or 2; np is mp / (A 1 The valence of A is 1; 1 The method of manufacturing a compound having a valence of 1 or 2 includes: making formula (S1): (B 1f (R) 1 ) [R 1 The compound shown is an organic group and is related to formula (S2): (A 1 ) ms2 (B) 2 ) ns2 [B] 2 It is OH, CO3 or HCO3; ms2 is (B 2 (valence) × ns2 / (A) 1 The valence of ns is 1 or 2; ns2 is (A 1 (value) × ms² / (B) 2 The reaction of the compound or its hydrate shown in the figure (with a valence of 1 or 2) is a step A.

The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and / or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and / or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and / or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

This invention discloses an internally tandem cement-based supercapacitor and its preparation method. The cement-based supercapacitor comprises one or more repeating units; each repeating unit includes a stacked cement-based electrolyte layer and a three-dimensional conductive unit layer; the three-dimensional conductive unit layer includes a three-dimensional porous conductive framework, divided into a lower porous electrode region, a middle ion-blocking conductive region, and an upper porous electrode region; the pores of the middle ion-blocking conductive region are densely filled with an insulating polymer, while the pores of the lower and upper porous electrode regions are loaded with electrochemically active materials; the outer peripheral sidewalls of the three-dimensional conductive unit layer are covered with in-situ mineralized ion-shielding rings to seal the ion short-circuit channels at the sidewall edges. The preparation method is compatible with the construction process of cement building components. This invention, through the design of the three-dimensional conductive unit layer and interface mineralization technology, achieves a synergistic multiplication of voltage window and energy density while effectively reducing the volume of the supercapacitor.

The present application relates to the technical field of gel electrolyte for supercapacitor, in particular to a gel electrolyte based on lysozyme amyloid fibers and application thereof. The ion conductivity of the conventional plant protein-based gel electrolyte is poor, and the electrical performance needs to be further improved. In view of the above problems, the present application provides a gel electrolyte based on lysozyme amyloid fibers. The lysozyme in the formula self-assembles into amyloid fibers under acidic conditions, and the surface of the amyloid fibers is rich in polar groups such as hydroxyl, carboxyl and amino groups, which can effectively promote the dissociation of lithium salt. At the same time, the three-dimensional network structure formed by the self-assembly of the fibers. Glycerol as a small molecule plasticizer inserts between the polymer chains. Lithium perchlorate and other lithium salts can provide high concentration of free lithium ions due to the large anion volume and low dissociation energy. The above components synergize and jointly act, effectively improving the comprehensive electrical performance of the gel electrolyte.

This secondary battery comprises a positive electrode, a negative electrode, and an electrolyte solution containing a fluorine-containing compound. The fluorine-containing compound includes at least one of compounds respectively expressed in formula (1) to formula (22).

The application discloses an organic-based pseudo-capacitance ion diode as well as a preparation method and application thereof, and belongs to the cross field of electrochemical energy storage technology and ion / electron coupling devices. The device comprises an organic functional electrode, a carbon-based counter electrode and an electrolyte, and the core feature is that: the organic electrode material used in the organic functional electrode can selectively produce Faraday pseudo-capacitance response and storage on protons (H + ) in the electrolyte, and the carbon-based counter electrode mainly exhibits double-layer capacitance behavior; the combination of the two enables the whole device to realize the function of one-way ion transmission, namely the ion diode effect. The organic-based pseudo-capacitance ion diode prepared by the application can be used to construct an ion logic gate, an ion sensor and a biomimetic neural morphological device, and provides a brand-new core device scheme for ion circuits and biomimetic intelligent systems.

To provide compounds for use as electrode additives or as salts in electrolyte compositions.SOLUTION: This disclosure relates to compounds for use as electrode additives or as salts in electrolyte compositions, and methods of preparing the compounds. Most of the compounds are anions of imidazoles with sulfonyl or carbonyl groups, or anions of other nitrogen-containing groups conjugated with various heterocyclic groups or sulfonyl groups. Also described are several electrochemical cells comprising the compounds as electrode additives or as salts in electrolyte compositions.SELECTED DRAWING: None

This specification provides electrolyte compositions suitable for electrochemical devices such as batteries, energy storage devices, sensors, capacitors, electrochromic elements, and photoelectric conversion elements.

The present disclosure relates to a poly(aryl piperidinium) copolymer ionomer which is grafted with a propargyl group, contains a piperidinium group, and does not have any aryl ether bond in the polymer backbone; an anion-exchange membrane cross-linked therefrom, and a method for preparing the same. The poly(aryl piperidinium) copolymer ionomer grafted with the propargyl group has excellent chemical and thermal stability, ionic conductivity, mechanical properties, dimensional stability, and durability. In addition, the cross-linked anion-exchange membrane prepared therefrom is greatly improved in the peel strength of the catalyst layer, thus promoting the interaction between the ionomer and the membrane and stabilizing the catalyst layer to remarkably improve the durability of a fuel cell.

The present disclosure provides an electrolyte composition including a polymer having an ability to preferentially conduct alkali metal ions, and an ionic compound, wherein the ionic compound includes an anion having a donor number of 37 or less as measured for a 1-ethyl-3-methylimidazolium salt.

To provide a lithium ion capacitor for energy harvesting, which has minute self-discharge and whose capacitance almost does not decrease even after repeated charging and discharging. A lithium ion capacitor for energy harvesting, comprising a positive electrode containing a positive electrode active material that reversibly adsorbs and desorbs lithium ions and anions; a negative electrode containing a negative electrode active material that reversibly occludes and releases lithium ions; and an electrolyte containing a lithium salt and an aprotic organic solvent and in contact with the positive electrode and the negative electrode; wherein lithium ions are occluded in advance in the negative electrode, and the mass of the negative electrode active material contained in the negative electrode is at least twice the mass of the positive electrode active material contained in the positive electrode.

A non-aqueous electrolyte solution characterized by including: a sulfonyl imide compound that is represented by general formula (1), LiN(RSO2)(FSO2) (where R is a fluorine atom, a C1-6 alkyl group, or a C1-6 fluoroalkyl group); and at least one nitrogen-containing compound selected from the group consisting of amide compounds having a C3-6 branched or linear alkyl group and nitrile compounds having a C3-6 branched or linear alkyl group, wherein the nitrogen-containing compound content relative to the sulfonyl imide compound is 10 ppm by mass to 6000 ppm by mass, inclusive.

The application discloses a sulfide solid electrolyte, a preparation method thereof and a super capacitor. The sulfide solid electrolyte comprises an organic-inorganic composite film generated by a curing reaction of a raw material system. The raw material system comprises a first monomer, a second monomer, a lithium salt, a siloxane prepolymer and an initiator. The first monomer is N,N'-1,3-propanediyl bis(oxazolidine 2-ketone), and the second monomer is 4,4'-thiobisphenol diglycidyl ether. The application is based on the composite system sulfide solid electrolyte of N,N'-1,3-propanediyl bis(oxazolidine 2-ketone) and 4,4'-thiobisphenol diglycidyl ether, and the modification of the siloxane prepolymer and the optimized process parameters, so that the defects of the prior art can be effectively solved.

The present invention relates to an electrochemical device and an electronic device including the same. The electrochemical device includes an electrolytic solution, the electrolytic solution includes a carboxylic acid ester compound and fluoroethylene carbonate (FEC), and based on the total weight of the electrolytic solution, the content of the carboxylic acid ester compound and the content of the fluoroethylene carbonate are w 1 and w 2 respectively. When they are set as 5% ≦ w 1 ≦ 60%, 2% ≦ w 2 ≦ 12%, and 2 ≦ w 1 / w 2 ≦ 20. The electrochemical device exhibits excellent rapid charging characteristics and high-temperature interval cycle characteristics.

This application relates to a low-temperature electrolyte and a supercapacitor. This application falls within the field of supercapacitor technology. The technical problem this application aims to solve is: to provide a low-temperature electrolyte and a supercapacitor. The technical solution adopted in this application is: a low-temperature electrolyte comprising a single solvent and a solute dissolved in the solvent; wherein the solvent has a moderate dielectric constant, a low donor number, and an ultra-low melting point; and the solute has a small molecular radius and high electrochemical stability.