84 results about "Redox active" patented technology

Described herein are variations of a sensor configured to generate a signal that is indicative of a concentration of an analyte in a fluid. The sensor may include a working electrode comprising an electrode material, a biorecognition layer disposed at least partially on the electrode material and comprising a biorecognition element that selectively and reversibly binds to an analyte, and an at least partially desiccated hydrogel disposed on the biorecognition layer. In some variations, the biorecognition element may be functionalized with a redox-active molecule and is configured to change conformation upon binding the analyte to move the redox-active molecule, closer to, or further from, the electrode material. In some variations, the biorecognition element may be an aptamer.

A temperature sensing apparatus having an electrode with an associated redox-active polymer. The electrode is connected to circuitry which applies an interrogating electrical potential waveform. The circuitry measures an electrical current resulting from application of the electrical potential waveform. The measured electrical current is processed to determine the temperature of a solution contacting the electrode. The apparatus may further comprise an analyte sensing redox-active polymer for sensing the amount of an analyte in the solution.

The present invention relates to electrolyte compositions comprising distinct redox-active compounds, namely, a redox-active compound, which is phenazine or a phenazine derivative, and a distinct redox-active compound, which is not phenazine or a phenazine derivative. The present invention also relates to the use of such electrolyte compositions as redox flow battery electrolytes. Accordingly, the invention further provides a redox flow battery comprising said compositions.

A method of bonding first and second substrates to each other the substrates having respective bonding surfaces to be bonded together, comprising:(a) applying to the bonding surface of at least the first substrate a redox-active metal catalyst primer to form a primed surface;(b) activating the primed bonding surface of the first substrate by exposing the primed bonding surface to actinic radiation;(c) applying, to the so activated bonding surface of the first substrate, and / or or to the bonding surface of the second substrate, a UV curable anaerobic adhesive;(d) mating the bonding surfaces together with the UV curable anaerobic adhesive therebetween; and(e) exposing the UV curable anaerobic adhesive between the mated surfaces to actinic UV radiation. The method is particularly suited for obtaining bonds with good tensile shear strength with electrical substrates coated with an insulating varnish.

The present disclosure provides for organic battery electrodes and dual-ion batteries. In an aspect, the present disclosure provides for electrodes (e.g., cathodes, anodes) that include a carbon fiber sheet that includes a non-conjugated redox-active polymer(s) (RAP) (e.g., a layer of the non-conjugated redox-active polymers). The electrodes can be used in dual-ion batteries. In an aspect, the dual-ion batteries can operate at lower temperatures (e.g., about 0° or less) than other battery types such as rocking-chair batteries.

Provided herein hybrid organic-inorganic redox active materials and related composites, compositions, electrode materials, electrodes electrochemical cells, batteries, methods and systems, which, can be used as to provide high performance cathode active materials in high capacity, high energy density, safe, and long-lasting electrochemical cells and batteries when coupled with Li, Na, K, graphite, lithiated graphite, in situ lithiated graphite, silicon, lithiated silicon, in situ lithiated silicon, silicon-graphite, in situ lithiated silicon-graphite, hard carbon, sodiated hard carbon, graphite-silicone, lithiated graphite-silicon etc. anodes in non-aqueous electrolytes.

The invention belongs to the field of metal ion battery material synthesis, and particularly provides a sulfur-doped oxygen-nitrogen-enriched conjugated organic material and application thereof in Li < + > / Zn < 2 + > ion batteries. The preparation method comprises the following steps: firstly, preparing 2, 3, 8, 9, 14, 15-hexachlorodiquinoline [2, 3-a: 2 ', 3'-c] phenazine (HANT-Cl) by taking cyclohexanehexone and dichlorobenzene diamine as raw materials, and then synthesizing 6S6O and the derivative thereof by taking HATN-Cl, sodium sulfide nonahydrate and a naphthoquinone derivative as raw materials. The obtained electrode material contains a plurality of oxidation-reduction active sites, multi-electron storage can be carried out, the transfer rate of electrons is improved through the large pi conjugated structure of the conjugated quinoneazine material, and therefore the high theoretical specific capacity and the excellent rate performance are achieved. Due to the addition of the sulfur element, the oxidation-reduction potential of the material is improved, the energy density of a battery can be improved, and the material has a wide application prospect in a Li < + > / Zn < 2 + > ion battery system.

This invention relates to the field of supercapacitor electrode materials, particularly bimetallic materials, and more specifically to nitrogen-doped nickel-cobalt bimetallic porous carbon composite materials, their preparation, and applications. The nitrogen-doped nickel-cobalt bimetallic porous carbon composite material is obtained by synthesizing a precursor via a hydrothermal method using 1,2,4-triazole-3-carboxylic acid as a ligand, followed by calcination at 600℃. This composite material contains abundant redox active sites and excellent conductivity, especially exhibiting excellent electrochemical performance under a 1:1 nickel-cobalt molar ratio. Experiments show that when the nickel-cobalt molar ratio is 1:1 during MOF synthesis, the obtained NC / NiCo1 / 1 exhibits excellent electrochemical performance at a mass ratio of 1.0 A g. ‑1 Below this, the specific capacitance can reach 595.76 F g. ‑1 It also exhibits excellent cycling performance, retaining 92.30% of its specific capacitance after 3000 cycles, and its specific surface area can reach 68.87 m². 2 g ‑1 .

The invention discloses a non-planar pi-conjugated naphthoquinone derivative with an asymmetric structure, a preparation method of the non-planar pi-conjugated naphthoquinone derivative and application of the non-planar pi-conjugated naphthoquinone derivative in an aqueous flow battery, and relates to the technical field of electrochemical energy storage. Methyl 4-aminobenzoate is added into hydrochloric acid, then the mixture and sodium nitrite are dissolved in water to be mixed to obtain a diazonium salt solution, and 2-hydroxy-1, 2, 4-triazole is added into the diazonium salt solution to be mixed to obtain a diazonium salt solution; 2, 4-naphthoquinone is dissolved in a KOH solution and mixed with a diazonium salt solution, after hydrochloric acid acidification, acetic acid recrystallization purification is conducted, and BANQ is obtained; the capacity fading rate of the modified naphthoquinone derivative BANQ is as low as 0.00018% per circle, the modified naphthoquinone derivative BANQ shows excellent cycling stability and redox reversibility, the BANQ molecule has an asymmetric non-planar pi conjugation characteristic, and the sensitivity of a redox core to nucleophilic / electrophilic attack is greatly reduced, so that the cycling stability is improved, and the service life is prolonged. And a new direction and possibility are provided for constructing green sustainable large-scale organic redox active molecules for energy storage through artificial modification of natural products.

Crosslinked polymers and related compositions and related compositions, electrochemical cells, batteries, methods and systems are described. The crosslinked polymers have at least one redox active monomeric moiety having a redox potential of 0.5 V to 3.0 V with reference to Li / Li+ electrode potential under standard conditions or −2.54 V to −0.04 V vs. SHE and has a carbocyclic structure and at least one carbonyl group or a carboxyl group on the carbocyclic structure. The crosslinked polymers also include at least one comonomeric moiety with at least one of the at least one redox active monomeric moiety and / or the at least one comonomeric moiety has a denticity of three to six corresponding to a three to six connected network polymer, and provide stable, high capacity organic electrode materials.

The invention belongs to the field of synthesis of electrode materials, and particularly relates to a one-dimensional chain polymer with multiple active sites as well as a preparation method and application of the one-dimensional chain polymer. The polymer is prepared by carrying out dehydration condensation reaction on 1, 8, 4, 5-naphthalene tetracarboxylic anhydride and 2-nitro-1, 4-phenylenediamine in an inert atmosphere, and after the reaction is finished, washing with deionized water and carrying out suction filtration to obtain a target product. The molecular structure of the material simultaneously contains multiple oxidation-reduction active centers such as carbonyl and nitryl, so that efficient Zn / collaborative storage can be realized. When being used as a positive electrode of a zinc ion battery, the composite material shows high discharge capacity and long cycle stability, and an assembled flexible battery also has high volume energy density, excellent repeated bending resistance and chemical self-charging capacity in air, and has wide application potential in the field of wearable electronic equipment. The synthesis process is simple, raw materials are easy to obtain, reproducibility is good, and the method is suitable for large-scale production.

The present invention relates to the electrochemical detection of an analyte by capacitance spectroscopy using a redox active polymer-coated electrode such as a polyaniline-coated electrode.

The invention provides a benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative and a preparation method and application thereof.The benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative is of an asymmetric multi-carbonyl quinone phenazine structure, contains a plurality of oxidation-reduction active sites and can show excellent oxidation-reduction performance, molecules of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative are of a conjugated structure, hydrogen bonds exist between the molecules, and the structure of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative can be used for preparing the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative. And the material is difficult to dissolve in an electrolyte, and has stable electrochemical performance in an ion battery. The preparation method of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative comprises the following steps: carrying out condensation reaction on a 2, 3-diaminonaphthalene-1, 4-diketone derivative and 2, 3, 5, 6-tetrahydroxy-1, 4-benzoquinone to obtain an intermediate; and then oxidizing the intermediate to obtain the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative disclosed by the invention.

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°.

The invention belongs to the field of aqueous ion battery electrode materials, and particularly relates to a conjugated imidazole organic electrode material and a preparation method and application thereof. The conjugated imidazole compound provided by the invention contains a plurality of redox active sites, so that the conjugated imidazole compound has relatively high theoretical capacity. When the conjugated imidazole compound is used as an electrode material of an aqueous ion battery, high specific capacity and excellent rate capability and cycling stability are realized. The conjugated imidazole compound designed by the invention improves the capacity of the organic electrode material of the ion battery, has the advantages of low unit cost, long cycle life, safety, environmental protection and the like, and has a wide application prospect in the aspect of high-energy-density energy storage batteries.

Batteries are described which comprise specific organic compounds recyclable by depolymerization as redox-active electrode material. A further aspect of the present invention is the use of these specific recyclable compounds as electrode material in batteries, as well as a method for manufacturing batteries from such recycled compounds.

This invention discloses a columnar-plate structure of Ti3C2T x This invention relates to MXene-BiFeO3 nanocomposite electrode materials, their preparation methods, and their application in hybrid batteries-supercapacitors, belonging to the field of electrochemical energy storage device technology. This invention solves the problem of existing MXene material stacking and the resulting inability of electrochemical energy storage technologies to simultaneously achieve high energy and high power. This invention loads BiFeO3 nanoparticles onto Ti3C2T... x A nanocomposite electrode material with a pillar-sheet structure is formed on MXene nanosheets. The nanosheets provide a conductive layered framework, while BiFeO3 acts as a pillar to prevent nanosheet stacking and enhance ion transport. This invention enhances pseudocapacitive behavior by introducing abundant redox active sites. The composite electrode material of this invention exhibits high specific capacitance, high energy density, and low charge transfer resistance, making it suitable for hybrid battery-supercapacitor systems and green hydrogen applications.

An electrochemical system includes a first reservoir comprising a first fluid and a catalyst, wherein the first fluid comprises a reaction mixture that reacts to form first and second products, and a second reservoir comprises a second fluid. A first electrode contacts a redox-active electrolyte material solution and has a reversible redox reaction with the electrolyte material to accept at least one ion. A second electrode contacts a redox-active electrolyte material solution and has a reversible redox reaction with the electrolyte material to drive at least one ion into the second fluid as an electrical potential is supplied. A diluted effluent comprising the second product and the catalyst exits the second reservoir, wherein the second product is removed from the first reservoir via electroosmosis, and optionally concurrently via osmosis, and a product stream comprising the first product exits the first reservoir.

The invention discloses an organic monocyclic macromolecular compound electrode material, a preparation method and application of the organic monocyclic macromolecular compound electrode material in a lithium ion battery. The organic monocyclic macromolecular compound electrode material is a monocyclic polybenzoquinone derivative which is obtained by carrying out dehydration condensation reaction on tetraaminobenzoquinone and disodium rose acid. The organic monocyclic macromolecular compound has a relatively large conjugated system and a relatively large aperture structure, is beneficial to full exposure of active sites and rapid transmission of ions, and remarkably inhibits the dissolution behavior of a material in an organic electrolyte, so that the cycling stability and the rate capability of a battery are remarkably improved. The molecular structure of the material contains a plurality of redox active sites (C = O and C = N), and can be reversibly coordinated with lithium ions to realize efficient lithium storage. The organic monocyclic molecular compound electrode material has high capacity, high stability and excellent rate capability, shows excellent electrochemical performance in a lithium ion battery system, and has high energy density and long service life.

Provided are systems, cartridges, devices and methods for detecting a target analyte in a test sample. The system employs a multitude of magnetic sources for moving magnetic beads in a sequential movement through various portions of e.g. a cartridge or strip, such as from one or more hybridization portions, through one or more washing portions, and to a redox portion. The system employs an electrode set and a potentiostat for performing amperometry to obtain an electrochemical measurement based on conversion of a redox active molecule. Also provided are methods for detecting a target analyte using the systems, and cartridges and strips for use in the system or a device of the system.

The application provides an organic polymer crystal material based on a hydrogen bond network and a preparation method and application thereof, and the material can be used in alkali metal ion batteries. The organic electrode material takes an unsaturated carbonyl group as a redox active site, takes a piperazine structure to connect a benzoquinone monomer to expand a conjugated structure, and can form intermolecular hydrogen bonds, connect polymer molecular chains to realize two-dimensional structure expansion, and finally form a graphite-like layered structure. Through the synergistic coordination of N and O in the structure and metal ions, reversible storage of the metal ions is realized. The organic polymer crystal positive electrode material has the advantages of easy scale production, high capacity, good rate performance, high cycle stability and the like, and has high application value.

The invention relates to a macroporous pyrene tetraketone-triazine covalent organic framework material as well as a synthesis method and application thereof, and belongs to the technical field of organic functional materials. The material is prepared from 2, 7-aminopyrene-4, 5, 9, 10-tetraketone and 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) tri (benzaldehyde) through polymerization. The material has a relatively large mesoporous structure, high crystallinity and rich redox active sites. The large-size mesoporous structure is favorable for keeping relatively high ion flux of the diaphragm, the bidirectional catalytic action of pyrene tetraketone conjugated carbonyl can improve the reaction kinetics of the high-load lithium-sulfur battery, and the soft-package lithium-sulfur battery prepared under the conditions of high-activity load and poor electrolyte shows stable cycle performance and relatively high specific capacity.

This invention discloses a nickel-based dithioene-transition metal MOFs / MWCNTs / GCE 5-HT electrochemical sensor, comprising a working electrode, a reference electrode, a counter electrode, and a buffer solution. NiZn-MOFs are prepared using P2S5, dioxane, dimethyl 4,4'-(2-hydroxyacetyl)dibenzoate, NiCl2·6H2O, THF, KOH, and Zn(NO3)2·4H2O. These are then ultrasonically composited with carboxylated carbon nanotubes to obtain NiZn-MOF / MWCNTs. A glassy carbon electrode is modified to obtain the working electrode. This electrochemical sensor can be used for 5-HT detection. The multi-walled carbon nanotubes exhibit good conductivity, and their combination with the redox-active three-dimensional NiZn-MOFs with unsaturated coordination sites improves the conductivity and catalytic performance of the composite material, solving the problems of low electrocatalytic activity and low sensitivity in 5-HT detection.

This invention discloses a method for preparing a CeO2 porous nanorod catalyst co-modified with HPW and Ru and its application, belonging to the field of catalytic materials technology. The invention includes the following steps: (1) preparation of cerium dioxide porous nanorods; (2) loading HPW onto cerium dioxide porous nanorods to obtain CeO2-HPW; (3) loading Ru nanoparticles onto CeO2-HPW to obtain the HPW and Ru co-modified CeO2 porous nanorod catalyst Ru / CeO2-HPW. The catalyst of this invention has a porous rod structure, characterized by high pore size, high acid capacity, multiple redox active sites, and resistance to water vapor. When applied to the catalytic oxidation of 1,2-DCE, the catalyst achieves a 90% conversion at temperature T. 90 It exhibits excellent catalytic performance at 273 °C, and the carbon dioxide mineralization rate of 1,2-DCE reaches 90% at 279 °C, reducing the formation of by-products.

The invention discloses a method for preparing a sodium-ion battery hard carbon negative electrode material from sulfur-doped modified bamboo-based biomass and application of the sodium-ion battery hard carbon negative electrode material, and belongs to the technical field of sodium-ion battery negative electrode material preparation. The bamboo-based biomass is used as a raw material, a sulfur source is used as a modifier, water is used as a solvent, and the hard carbon negative electrode material for the sodium ion battery is obtained through mixing, drying, medium and low temperature pretreatment and high temperature carbonization. According to the preparation method disclosed by the invention, S has a relatively large covalent radius, so that the carbon layer spacing can be obviously enlarged, insertion, separation and diffusion of sodium ions are facilitated, and meanwhile, an active C-S bond is added, so that additional sulfur group redox active sites are provided; and the process is simple, the cost is low, and the sodium ion battery has the characteristics of high capacity and high rate performance.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of sensing metal ions using three-dimensional printed ion sensors. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and an ion-sensing agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The ion-sensing agent can include water and a redox-active inorganic salt.

A redox-active modified metal-organic framework There is provided an electrode comprising a substrate coated with a redox-active modified metal-organic framework (MOF), wherein the redox-active modified MOF is a ferrocene-functionalised MOF. There is also provided an electrosorption unit comprising the electrode and a method of separating at least one target molecule from a fluid source using the electrode.

The application provides an arylpiperidine compound and a preparation method thereof, and belongs to the technical field of organic synthesis. The arylpiperidine compound has a structure shown in formula Xx. The application takes a commercial and cheap piperidine carboxylic acid compound as a starting material, prepares a redox active ester with an N-hydroxy dicarboxylic imide compound, then undergoes decarboxylation coupling reaction with an aryl boronic acid compound or decarboxylation reduction coupling reaction with an aryl iodine compound, quickly and effectively constructs a connecting arm between C-sp2 (the aryl boronic acid compound or the aryl iodine compound) and C-sp3 (the piperidine), and realizes economical synthesis of the arylpiperidine compound. The raw material adopted by the application is cheap and easy to obtain, avoids using an expensive platinum group noble metal catalyst and a high-pressure reaction condition, and further reduces production cost and adverse effects on the environment.

The disclosure relates to systems and methods for electrochemical cooling and / or refrigeration. The disclosed system includes at least hot and cold electrochemical cells having ion exchange membranes, hot side and cold side heat exchangers, a heat sink, a heat source, and an external power supply that drives current through the electrochemical cells. In the systems, a first solution including a first redox active electrolyte and a second solution including a second redox active electrolyte circulate continuously through the system without physically mixing together. In another aspect, the present disclosure relates to apparatuses incorporating the disclosed systems, and methods for electrochemical cooling using the disclosed systems.

A flexible energy storage device with a redox-active biopolymer organogel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the redox-active biopolymer organogel electrolyte. The redox-active biopolymer organogel electrolyte can include a biopolymer organogel, redox-active molybdenum-containing ions, and a secondary ionic substance. The flexible energy storage device may retain greater than 75% of an unbent specific capacitance when bent at an angle of 10° to 170°.