224 results about "Redox active" patented technology

Described herein are variations of an analyte monitoring system, including an analyte monitoring device. For example, an analyte monitoring device may include a skin-penetrating microneedle array for use in measuring analyte, such as in a continuous manner. The microneedle array may include, for example, at least one microneedle comprising a working electrode comprising an analyte-sensing aptamer that selectively and reversibly binds to analyte. The working electrode comprises at least one thiol-based passivation molecule that provides protection of the working electrode from, by way of example, foulants and interferents. For example, a sensor may be configured to generate a signal that is indicative of a concentration of an analyte in a fluid, the sensor comprising 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. For example, a working electrode may be configured to generate a signal indicative of a concentration of an analyte in a fluid, the working electrode comprising an electrode material, a biorecognition element disposed on the electrode material that selectively binds to the analyte, wherein the biorecognition element is 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, and a passivation element comprising a zwitterionic peptide disposed on the electrode material.

The invention provides a low-cost flow battery and an application thereof, a redox active substance of a positive electrode electrolyte of the low-cost flow battery contains a hydroxylamine cyclic structure group with hindered amine, and the hydroxylamine cyclic structure group with hindered amine is preferably selected from 1-hydroxy-2, 2, 6, 7, 8-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, one or more of a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidine group, and a 1-oxo-2, 2, 6, 6-tetrasubstituted piperidinium group; a redox active substance of the negative electrode electrolyte contains one or more of a titanium element, a vanadium element, a chromium element, an iron element and a zinc element. The low-cost flow battery has the advantages of high output voltage, high energy density, environment friendliness and low cost, and has good application prospects and large-scale popularization potential in the field of energy storage.

The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions as well as a redox flow battery comprising said compounds and compositions. Additionally, an assembly for carrying out the inventive method is provided.

The invention discloses an organic carbonyl compound electrode material, a preparation method and application of the organic carbonyl compound electrode material in a lithium ion battery, and the organic carbonyl compound electrode material is bipyridino [3 ', 2': 5, 6; the invention relates to an organic carbonyl compound electrode material, which is prepared from 2, 2 ', 3': 7, 8] quinoxaline [2, 3-i] bipyridino [3, 2-a: 2 ', 3'-c] phenazine-10, 21-diquinone and 1, 2, 4, 5-tetraamino p-benzoquinone and 1, 10-phenanthroline-5, 6-diketone through a dehydration condensation reaction. When the organic electrode material is used as a positive electrode material to be applied to a lithium ion battery, due to the fact that the organic electrode material contains a large conjugated system, the organic electrode material has good dissolution inertness in electrolyte and is beneficial to electron transmission, and therefore the cycling stability and the rate performance of the battery are improved. In addition, multiple active sites provide more redox active sites to coordinate with lithium ions, so that reversible lithium storage is realized, and relatively high capacity is shown.

In some aspects, the present disclosure provides a rechargeable energy source system. The system can comprise a positive electrode comprising a redox material and having a specific capacity of at least 300 mAh / g. The system can comprise a negative electrode comprising a layer of lithium metal, having a purity level greater than about 90% and a thickness ranging from about 1 μm to about 20 μm. The positive electrode can be configured to maintain a specific capacity for at least 100 charge / discharge cycles between 1.6 and 4.5 Volts at a charge / discharge rate of C / 10 or higher.

The invention belongs to the field of water-based metal ion battery electrode materials, and particularly relates to a quinoneazine organic electrode material with multiple active sites and a preparation method and application of the quinoneazine organic electrode material. The preparation method comprises the following steps: synthesizing dihydroxy phenazine in a nitrogen atmosphere, fully grinding the dihydroxy phenazine and an o-phenylenediamine derivative, sintering in a tubular furnace, cooling and washing to obtain an intermediate; and oxidizing the intermediate under an acidic condition to obtain a product. A plurality of carbon-nitrogen double bonds and carbon-oxygen double bonds exist in the molecular structure of the quinoneazine compound, and redox active sites are rich and are uniformly dispersed. The quinoneazine compound realizes high specific capacity, high material utilization rate, excellent rate capability and cycling stability; meanwhile, according to the quinoneazine compound, the solubility of the compound is reduced through a method of expanding molecules with conjugated structures, and the problem of battery stability caused by the fact that an organic electrode material is easily dissolved in an electrolyte is solved. And the water-based zinc ion battery with the advantages of high capacity, good cycling stability, high energy storage density and the like is constructed.

Compounds with redox molecular cores and branched molecular tails comprising ionic functionalities for uses as electrolytes in redox flow batteries are described, as well as methods of synthesis and use thereof. The compounds have redox active perylene diimide or ferrocene molecular core decorated with the branched molecular tails having multiple ionic functionalities to improve water solubility of the molecular core, and, as such, its performance as the electrolyte.

The present invention relates to a battery comprising an electrochemical cell for electrical energy storage (EES), which is capable of operating in an electrical energy delivery mode in which it generates electrical energy by oxidation of a redox active species and reduction of oxygen in an oxygen reduction reaction (ORR) and eventually in an electrical energy storage mode in which it consumes electrical energy to reduce a redox active species and generates oxygen in an oxygen evolution reaction (OER), wherein the electrochemical cell is a hybrid redox flow cell comprising a negative half-cell (1), a positive half-cell (2), a negolyte (3A) with a polyoxometalate (POM) as redox active species in the negative half-cell (1), a membrane (4) disposed between the negative half-cell (1) and the positive half-cell (2), a negative electrode (5) in the negative half-cell (1), a positive electrode (6) in the positive half-cell (2), characterised in that the polyoxometalate (POM) is capable of multiple electron transfer, an inlet (7) and an outlet (8) connect the negative half-cell (1) with an electrolyte tank (9) via conduits (10) equipped with a pump (11), so that the battery may be charged by provisioning the tank (9) with charged negolyte, or recharged by replacing discharged negolyte with charged negolyte, the positive electrode (6) is equipped with an oxygen reduction reaction (ORR) and eventually an oxygen evolution reaction (OER) catalyst or with a bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).

The invention discloses a preparation method and application of an HPW and Ru co-modified CeO2 porous nanorod catalyst, and belongs to the technical field of catalytic materials. The method comprises the following steps: (1) preparing cerium dioxide porous nanorods; (2) loading HPW on the cerium dioxide porous nanorod to obtain CeO2-HPW; and (3) loading Ru nano particles on the CeO2-HPW, so as to obtain the CeO2 porous nanorod catalyst Ru / CeO2-HPW co-modified by the HPW and the Ru. The catalyst disclosed by the invention is of a porous rod-like structure and has the characteristics of high pore diameter, high acid capacity, multiple oxidation-reduction active sites, water vapor resistance and the like. The catalyst disclosed by the invention is applied to the catalytic oxidation reaction of 1, 2-DCE, and shows excellent catalytic performance at 90% conversion rate temperature T90 of 273 DEG C, the carbon dioxide mineralization rate of 1, 2-DCE reaches 90% at 279 DEG C, and the generation of by-products is reduced.

In order to overcome the defects in the prior art, the invention provides a preparation method of a redox electrode for an all-iron flow battery, and the preparation method comprises the following steps: step 1, pretreating a carbon electrode to obtain a pretreated carbon electrode; step 2, preparing a metal-carbon load; step 3, dissolving the metal-carbon load in a solvent to obtain a treatment solution; 4, immersing the pretreated carbon electrode in the treating fluid, and controlling the loading capacity of the metal-carbon load on the carbon electrode to be 3mg / cm < 2 >; and step 5, taking out the carbon electrode loaded with the metal-carbon load, and drying to obtain the redox electrode for the total iron flow battery. According to the redox electrode for the total iron flow battery, the metal-carbon material serves as an electrode load, more reaction sites can be provided for the electrode, the prepared electrode is high in catalytic activity, and the redox activity of the electrode is remarkably improved.

The application provides a low-cost flow battery and application thereof, and the low-cost flow battery contains a hydroxylamine cyclic structure group with a hindered amine in a redox active material of a positive electrolyte of the low-cost flow battery, the hydroxylamine cyclic structure group with the hindered amine is preferably one or more of a 1-hydroxyl-2,2,6,6-tetrasubstituted piperidine group, a 1-oxygen radical-2,2,6,6-tetrasubstituted piperidine group and a 1-oxo-2,2,6,6-tetrasubstituted piperidinium group; and the redox active material of a negative electrolyte of the low-cost flow battery contains one or more of titanium elements, vanadium elements, chromium elements, iron elements and zinc elements. The low-cost flow battery has the advantages of high output voltage, high energy density, environmental friendliness and low cost, and has good application prospect and large-scale promotion potential in the field of energy storage.

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.

An ink composition for additive manufacturing comprises at least a first phase, the first phase being a liquid phase, and inorganic particles being distributed in the first phase. The inorganic particles are redox active. The first phase furthermore comprises at least one organic processing additive. In a method of additive manufacturing a structure for use in a thermochemical fuel production process and / or in a heat transfer application, said ink composition is deposited so as to form a precursor structure, and said precursor structure is subjected to at least one thermal treatment so as to form the structure for use in the thermochemical fuel production process and / or in the heat transfer application.

Redox active S-linked polymers, vulcanized matrices, and related composites, compositions, electrode materials, electrodes, and related electrode chemical cells, batteries, methods, and systems are described. In particular, polymers and related compositions, composites, electrode materials and electrodes having the following S-links are described: a redox potential of up to 3.5 V and a capacity of up to 800 mAh / g or greater relative to the Li / Li + electrode potential under standard conditions. More particularly, redox active S-linked polymers, vulcanized matrices and related composites and compositions are provided as electrode materials for the cathode of an electrochemical cell further comprising a Li anode and a non-aqueous electrolyte.

The invention relates to a two-dimensional bimetal organic nanosheet loaded silicon-carbon composite material and a preparation method and application thereof, and belongs to the technical field of preparation of lithium ion power battery electrode materials.Firstly, dopamine is polymerized on the surface of silicon powder in situ, and the silicon-carbon composite material (Si-C) is obtained after high-temperature calcination; then, terephthalic acid, cobalt chloride hexahydrate, nickel chloride hexahydrate and Si-C are added into a mixed solution prepared from N, N-dimethylformamide, deionized water and ethyl alcohol; and after dissolving, injecting triethylamine and stirring, sealing the container after light gray precipitates appear, continuously performing ultrasonic treatment, performing centrifugal washing for multiple times, and drying at room temperature to obtain the product Si (at) C / Ni-Co-BDC composite material. Compared with pure silicon powder and silicon-carbon composite materials, the composite material Si (at) C / Ni-Co-BDC has better structural stability and rich redox active sites, the lithium storage performance of the material can be further optimized, and the composite material has better application prospects.

The invention relates to a heterogeneous polyelectrolyte self-assembled membrane as well as a preparation method and application thereof. In the flowing process of the electrolyte of the flow battery, the polyanion compound in the electrolyte on one side and the polycation compound in the electrolyte on the other side are self-assembled on the glass fiber substrate in the middle under the action of strong electrostatic adsorption to form the diaphragm of the flow battery, namely the heterogeneous polyelectrolyte self-assembled membrane. The microporous membrane has good mechanical properties and ionic conductivity, and the formed microporous membrane structure can effectively inhibit interpenetration and mixing of redox active molecules in the flow battery. The aqueous flow battery system assembled by the heterogeneous polyelectrolyte self-assembled membrane and typical oxidation-reduction active organic molecules still keeps the initial capacity of 97% or above after 2000 charge-discharge cycles. Compared with the prior art, the heterogeneous polyelectrolyte self-assembled membrane provided by the invention can effectively inhibit capacity attenuation caused by permeation and cross mixing of electrolyte redox active molecules in an aqueous flow battery through the membrane.

The invention discloses a synthesis method and application of a redox cation covalent organic framework, and belongs to the technical field of functional adsorption materials. 2, 5-dihydroxy benzaldehyde and triamino guanidine chloride are used as reaction monomers, a covalent organic framework is constructed through a Schiff alkali condensation reaction, guanidyl cation sites are synchronously introduced, hydroxyl redox active groups are reserved, and a redox cation covalent organic framework (AGS-TPA-OH) uniformly-distributed high-density guanidyl salt cation and hydroquinone active unit is prepared. Cr2O7 < 2-> is efficiently captured through electrostatic interaction. The synthesis method is green and efficient, the adsorption capacity of the obtained AGS-TPA-OH on Cr2O7 < 2-> reaches 4377.25 mg / g, the removal rate in 50 minutes exceeds 98%, an innovative solution is provided for efficient treatment and resource recycling of hexavalent chromium in industrial wastewater, and the method has remarkable environmental and economic benefits.

Compounds with redox molecular cores and branched molecular tails comprising ionic functionalities for uses as electrolytes in redox flow batteries are described, as well as methods of synthesis and use thereof. The compounds have redox active perylene diimide or ferrocene molecular core decorated with the branched molecular tails having multiple ionic functionalities to improve water solubility of the molecular core, and, as such, its performance as the electrolyte.

Provided herein are methods and systems and related devices and compositions for electrochemical control of viability of redox active bacteria. The electrochemical control is performed by applying to a working electrode contacting a medium known or suspected to comprise the redox active bacteria, a reducing potential which is lower of the midpoint potential of a redox active compound produced by the redox active bacteria.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to an organic polymer containing carbonyl and imine as well as a preparation method and application of the organic polymer. Aiming at the problems of insufficient solvent resistance and limited inherent conductivity of a lithium ion battery positive electrode material, the invention designs and synthesizes an organic polymer with rich redox active sites and an expanded pi conjugated structure. The organic polymer containing carbonyl and imine provided by the invention has reversible lithium ion storage, relatively high actual specific capacity, excellent cycle stability, excellent rate capability and high energy density and power density. In the synthesis of the organic polymer provided by the invention, experimental raw materials are cheap and easily available, the preparation method is simple, the reaction yield is relatively high, large-scale application of the material in the field of lithium ions is facilitated, and the material has a wide application prospect.

The present invention discloses a diazine-based organic negative electrode material for aqueous alkaline batteries and its application, relating to the field of battery technology. This type of organic negative electrode has an electrochemical redox active center with a nitrogen-nitrogen double bond (N=N), including but not limited to azobenzene; azobenzene modified with at least one of halogen, methyl, and nitro functional groups; benzo[c]cinnoline; and benzo[c]cinnoline modified with at least one of halogen, methyl, and nitro functional groups. The organic negative electrode material provided by the present invention can operate stably under various alkaline conditions and is compatible with nickel hydroxide positive electrodes and air positive electrodes. The material has excellent rate performance and long-term cycle stability, and its wide source makes it suitable for large-scale application.

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 application discloses a trifluoromethyl alkyl quinoline compound, a synthesis method and anti-tumor application in the field of organic synthesis and medicinal chemistry, which is synthesized from trifluoropropylene quinoline or N-benzoyl pyrrole (A) and redox active ester (B) as raw materials, dimethyl sulfoxide as a solvent, dihydropyridine as an electron donor, and under visible light irradiation, a trifluoromethyl alkyl quinoline and analogues (C) are synthesized at a high yield. The specific reaction formula is as follows: The compounds provided by the application all have excellent anti-tumor activity and low toxicity to normal cells, and therefore have application prospects for preparing anti-tumor drugs.

Disclosed is an electrode precursor composition suitable for preparing a gel electrode, the composition comprising an organic solvent, an alkali metal salt, an electrically insulating polymer, and a redox-active organic component, where the redox-active organic component is present at a smaller volume fraction than the electrically insulating polymer. The redox active organic component may be present in the electrode precursor composition in an amount of between 1 and 20 vol% based on the total volume of the electrode precursor composition. The redox-active organic component may be present in the electrode precursor composition in an amount of up to 8% by volume based on the total volume of the electrode precursor composition. The redox active organic component may be a redox active polymer.

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 present disclosure relates to a combination of redox active compounds for use as redox flow battery electrolytes. Further provided herein is a kit comprising the combination, a redox flow battery, and a method using the combination, kit and / or redox flow battery of the present disclosure.

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.