125results about "Acid electrolytes" patented technology

The invention discloses an electrolyte for water system energy storage and a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage, the electrolyte for water system energy storage comprises a mixed salt and a mixed solvent, the mixed salt comprises a metal salt and an organic salt; the mixed solvent comprises water and an aprotic organic solvent; the organic salt is trifluoromethanesulfonate containing imidazole cations. Through the ion-solvent synergistic effect, an anion-rich and water-poor double-electrode-layer structure is formed on an electrode interface, dendritic crystal growth and side reaction are remarkably inhibited, and meanwhile high ionic conductivity is kept. The aqueous battery prepared from the electrolyte has good cycling stability and excellent practical performance under the conditions of low N / P ratio and low current density.

The disclosure provides redox flow batteries that have long-duration or long-lifetime for energy storage applications. The water-soluble perylene diimide based molecules can be used as energy storage materials in the anode chambers. The water-soluble ferrocene- based molecules can be used as energy storage materials in the cathode chambers. The redox flow batteries have negligible crossover rates across the membranes.

This invention belongs to the field of vanadium redox flow batteries, specifically relating to a vanadium redox flow battery precursor, a vanadium redox flow battery, and a method for preparing the same. The vanadium redox flow battery precursor of this invention includes a positive electrode electrolyte precursor and a negative electrode electrolyte precursor; the positive electrode electrolyte precursor includes vanadium ions, an inorganic acid, a positive electrode side reaction inhibitor precursor, and a solvent; wherein the positive electrode side reaction inhibitor precursor is aniline; the inorganic acid includes hydrochloric acid; the negative electrode electrolyte precursor includes vanadium ions, an inorganic acid, a negative electrode side reaction inhibitor precursor, and a solvent; wherein the negative electrode side reaction inhibitor precursor is a metal compound; the metal compound is selected from one or more of tin compounds, bismuth compounds, and antimony compounds; the inorganic acid includes hydrochloric acid.

A peeling device (1) includes: an electrolyte sheet (11) attached to a concrete surface; a first electrode (12) connected to the electrolyte sheet (11); a second electrode (13) connected to an exposed reinforcing steel rod; a potential control unit (14) that applies a voltage to the second electrode (13), with the first electrode (12) being taken as a reference electrode, to control the potential generated in the second electrode (13) to fall in a predetermined range; and a current measurement unit (15) that continuously measures the current value of a current flowing from the second electrode (13) to the first electrode (12).

Particular embodiments described herein provide for a battery that includes a zinc anode, a manganese cathode, and an electrolyte. The electrolyte includes an acetate and a sulfate. In some examples, the acetate to sulfate ratio is about 1:1.

Provided herein are phosphorus battery electrolyte additive chemicals for use in aqueous batteries that prevent self-discharge in the form of corrosion and hydrogen evolution, which increases the efficiency and extends the shelf-life of the batteries.

Provided herein is an electrolyte for a battery, the electrolyte comprising: a solvent comprising water and sulfuric acid; a vanadium salt; a deprotonation inhibitor for [VO2(H2O)3]+; and a V2O5 precipitation inhibitor. Provided also are batteries comprising the electrolyte, kits comprising components of the electrolyte, a method for stabilising vanadium salts in an electrolyte by adding a deprotonation inhibitor for [VO2(H2O)3]+; and a V2O5 precipitation inhibitor.

A lead acid battery includes a positive electrode comprised of a grid filled with a lead-based active mass. A negative electrode is comprised of a base material. A spacer maintains a distance between the positive and negative electrodes. The battery further includes an active metal and an electrolyte solution. In a process of discharge, the active metal is dissolved in the electrolyte solution, and in a process of charge, the active metal is deposited onto the base material.

The application discloses an electrolyte additive, an electrolyte and a battery, the electrolyte additive comprising a first additive and a second additive, the first additive comprising a compound shown in formula 1: wherein R1 and R2 are each independently selected from at least one of H, a phenyl group, a halogen, a C1-C6 hydrocarbon group, a C1-C6 halogenated hydrocarbon group, wherein R1 and R2 are not H at the same time; R3, R4 and R5 are each independently selected from at least one of a C1-C3 hydrocarbyl group, an oxygen atom, O=S=O, C=O and S=O, at least one of R3, R4 and R5 is selected from O=S=O, C=O and S=O, and at least one of R3, R4 and R5 is selected from an oxygen atom; and the second additive comprising a compound shown in formula 2: thereby, adding the electrolyte additive to the electrolyte of the battery can improve the fast-charging performance of the battery and can improve the high-temperature cycle performance.

The invention provides an aqueous cadmium ion-vanadium dioxide battery as well as a preparation method and application thereof, and relates to the field of ocean energy storage. The battery comprises a negative electrode, a positive electrode, a diaphragm and an aqueous electrolyte, the negative electrode is metal cadmium or cadmium-based alloy; the active material of the positive electrode is metastable monoclinic phase vanadium dioxide; the diaphragm is a glass fiber diaphragm; the aqueous electrolyte is an aqueous solution containing cadmium salt; the total concentration of the cadmium salt in the aqueous electrolyte is 1-4 mol / L. The aqueous vanadium dioxide-cadmium metal secondary battery disclosed by the invention has the advantages of safe aqueous electrolyte system, high rate capability, ultra-long cycle life and the like, and has remarkable advantages when being applied to ocean energy storage.

To provide: battery separators for enhanced flooded lead-acid batteries, such as enhanced flooded start / stop batteries, that do not undergo stratification while in use and / or that exhibit reduced or significantly reduced levels of stratification while in use; and lead-acid batteries, vehicles, and related methods.SOLUTION: A battery separator for enhancing acid mixing in a flooded lead-acid battery comprises: a porous backweb and a plurality of broken ribs extending from at least one side of the backweb; and at least a portion of the plurality of broken ribs being defined by an angular orientation to enhance acid mixing especially during battery movement with the separator positioned parallel to start and stop motion of the battery.SELECTED DRAWING: Figure 26D

The present invention relates to the assembly of a negatively charged dendrite-inhibiting ionomer membrane for aqueous rechargeable zinc metal batteries (AZMB) made by crosslinking sulfonated polyvinyl alcohol (PVS) and polyvinyl alcohol (PVA).

The present invention relates to a vanadium electrolyte and to a secondary battery comprising same and, more particularly, to a vanadium electrolyte having a controlled concentration of an element causing a hydrogen evolution reaction (HER) occurring during charging and discharging of a secondary battery, and to a secondary battery comprising the vanadium electrolyte.

This application discloses a hydrochloric acid-based vanadium-iron-chromium electrolyte, its preparation method, and a flow battery, relating to the field of batteries. The hydrochloric acid-based vanadium-iron-chromium electrolyte contains 1.0~2.5 mol / L vanadium ions, 0.15~2.0 mol / L ferrous ions, 0.1~1.7 mol / L chromium ions, 3.0~4.5 mol / L hydrogen ions, and 0.001~0.05 mol / L hydrogen evolution inhibitor. The technical solution of this application utilizes a hydrochloric acid-based vanadium-iron-chromium electrolyte formed with specific concentrations of vanadium ions, ferrous ions, chromium ions, hydrogen ions, and a hydrogen evolution inhibitor. This electrolyte is suitable for use as the positive and negative electrode electrolytes in flow batteries, significantly improving the energy efficiency and cycle stability of the flow battery. Furthermore, the introduction of relatively inexpensive iron reduces the system's dependence on expensive vanadium resources and lowers production costs.

This disclosure provides a redox flow battery with long operating time or long life for energy storage applications. A water-soluble perylenediimide molecule can be used as an energy storage material in the anode chamber, and a water-soluble ferrocene molecule can be used as an energy storage material in the cathode chamber. This redox flow battery has a substantially negligible crossover rate across the membrane.

The present application discloses a naphthalene-type compound, preparation method therefore and use therefore. The naphthalene-type compound has a molecular structure substituted with polyhydroxyl, polybenzylamine, and quaternary ammonium or multiple quaternary ammonium functional groups, and compared with a raw material, the naphthalene-type compound has greatly improved water solubility in an acidic aqueous solution. An electrochemical reaction has low raw material costs and a high reaction yield, is carried out under a normal temperature and pressure condition without adding additional catalysts, and is carried out under air conditions without inert gas protection.

The application relates to the technical field of lead-acid battery electrolyte, and discloses a lead-acid battery electrolyte composite additive, an electrolyte and a preparation method thereof. The electrolyte composite additive comprises the following components: hexadecyl trimethyl ammonium bromide, stannous sulfate, an organic phosphonic acid sodium salt and 1,8-diazabicyclo[5.4.0]undec-7-ene. The electrolyte composite additive solves the problems of fast battery capacity attenuation and short battery service life of the lead-acid battery in a low-temperature environment, and improves the low-temperature resistance of the lead-acid battery.

The present invention discloses naphthalene-type compounds and their preparation and use. The naphthalene-type compounds have a molecular structure substituted with multiple hydroxyl groups, multiple benzylamine groups, and quaternary ammonium groups or multiple quaternary ammonium functional groups, and have significantly improved water solubility in acidic aqueous solutions compared to the raw materials. The electrochemical reaction requires low raw material costs, high reaction yields, and proceeds under ambient temperature and pressure conditions without the need for additional catalysts. It can be carried out under air conditions without the need for inert gas protection.

The present invention relates to a solution comprising water and different 2,2,6,6-tetramethyl-piperidinyl-oxyl (TEMPO)-derivatives, a process for the production of this solution, a process for making a redox-flow cell comprising the solution as electrolyte, a redox-flow cell comprising the solution as an electrolyte in one chamber of the cell and the use of the redox-flow cell for storing electrical energy.

The present disclosure provides a modular biodegradable battery system addressing limitations of conventional batteries. The system comprises removable energy pods, each containing a first electrode, a second electrode, separate compartments for organic material and vinegar, and an activation mechanism to mix these components into a biodegradable slurry. A reusable modular base removably couples with the energy pods. This design enables customizable power configurations while utilizing environmentally friendly materials. The activation mechanism allows on-demand power generation, overcoming shelf-life issues of pre-mixed biodegradable batteries. The modular base facilitates easy replacement of depleted pods and supports series or parallel connections for voltage or current amplification. This system offers a sustainable alternative to traditional batteries, reducing electronic waste and environmental impact.

The invention provides an electrolyte for use in an all-iron redox flow battery, comprising an aqueous solution of an Fe2+ salt; a first cation additive being aluminium Al3+; and a second cation additive selected from the group consisting of Na+, K+, Ca2+, Mg2+ or NH4+.

The present disclosure provides for aqueous polymer-air batteries that have several advantages over other technologies such as improved safety, lower cost, higher ionic conductivity, and sustainability. In an aspect, the present disclosure provides for an acidic polymer-air battery that includes an anode including compositions including a conjugated ladder polymers as a stable anode for acidic-polymer air batteries.

In one or more embodiments described herein, a lead-acid battery electrode active material precursor can be manufactured by a process including forming an active material paste and curing the active material paste to form a lead-acid battery electrode active material precursor. The active material paste can be made by combining at least water, an acid, a glass composition having at least 25% by weight of a single metal oxide, and lead oxide. The metal oxide can be selected from barium oxide, lead oxide, zinc oxide, or antimony oxide.

This lithium ion secondary battery (1) has a negative electrode (12), a positive electrode (10), an aqueous electrolyte (16) containing a lithium salt, and a separation layer (14) arranged between the negative electrode (12) and the positive electrode (10). The aqueous electrolyte (16) is in contact with the positive electrode (10), and the separation layer (14) includes a non-aqueous solid electrolyte A in which a matrix polymer, the lithium salt and a hydrophobic ionic liquid are compounded.

An electrolyte system for improving electrolyte performance characteristics is provided. The electrolyte system includes an electrolyte, and a synthetic proton-conductive polymer additive. A cell comprising said electrolyte system and a method of making the same is also disclosed herein. The synthetic proton-conductive polymer additive may be used in conjunction with a bipolar overvoltage battery pulser to improve overall battery performance.

The invention discloses a carbon nitride quantum dot, a preparation method thereof and application of the carbon nitride quantum dot in an aqueous zinc ion battery, and belongs to the field of electrochemistry. The carbon nitride quantum dot C3N7QDS is prepared, formation of the carbon nitride quantum dot is controlled through ultrasonic stripping and hydrothermal treatment, an anode artificial protection layer is constructed in situ, and the carbon nitride quantum dot effectively removes a solvation structure through combination of more nitrogen atoms and zinc ions; meanwhile, due to the unique quantum structure, zinc ions are promoted to be deposited on the (002) crystal face, so that uniform deposition of the zinc ions is achieved, and due to the unique aperture, rapid ion migration can be effectively achieved.

Provided herein are phosphorus battery electrolyte additive chemicals for use in aqueous batteries that prevent self-discharge in the form of corrosion and hydrogen evolution, which increases the efficiency and extends the shelf-life of the batteries.

The present disclosure provides redox flow batteries with long duration or long life for energy storage applications. The water-soluble perylene diimide molecule can be used as an energy storage material in an anode chamber. The water-soluble ferrocenyl molecules can be used as energy storage materials in cathode chambers. The redox flow battery has a negligible cross permeability across the membrane.

The invention discloses an acidic tin-manganese flow battery electrolyte and a tin-manganese flow battery, and belongs to the field of redox flow batteries. The electrolyte comprises manganese salt, tin salt and acid, by adjusting the dispersion state of the active substance in the electrolyte, the electrolyte is in a solid-liquid coexisting flowing slurry state, so that more stable tin deposition behavior and efficient electrochemical performance are realized. Specifically, according to the method disclosed by the invention, the dispersed state of the active substances is improved, so that the dispersed particle size of the active substances is moderate, the active substances can be uniformly adsorbed by the three-dimensional carbon felt in the electrolyte circulating process, and the active substances can play a role in inducing tin to uniformly nucleate in the subsequent reaction process; therefore, the electrochemical performance of the tin-manganese flow battery is greatly improved.

A naphthalene-type compound, preparation method therefore and use therefore are provided. The naphthalene-type compound has a molecular structure substituted with polyhydroxyl, polybenzylamine, and quaternary ammonium or multiple quaternary ammonium functional groups, and compared with a raw material, the naphthalene-type compound has greatly improved water solubility in an acidic aqueous solution. An electrochemical reaction has low raw material costs and a high reaction yield, is carried out under a normal temperature and pressure condition without adding additional catalysts, and is carried out under air conditions without inert gas protection.