239results about "Aqueous electrolyte cells" patented technology

An activatable dressing of the present disclosure comprises a biocompatible battery including a magnesium-based (Mg) anode; a silver / silver chloride-based (Ag / AgCl) cathode; and a sodium chloride (NaCl) impregnated separator disposed between the anode and cathode in a dry state, the separator comprising an inlet pad configured for introduction of a water-based fluid to the separator for activation of the battery. The activatable dressing further comprises stimulation electrodes electrically coupled to the Mg anode and Ag / AgCl cathode.

This invention relates to the field of magnesium primary battery preparation technology, and discloses a magnesium aqueous primary battery system, including a positive electrode, a negative electrode, and an electrolyte. The negative electrode is any one of magnesium metal and magnesium alloy. The positive electrode is made of a positive electrode active material, superconducting carbon, and a first-order gelatinizing agent. The electrolyte is made of magnesium bromide, a corrosion inhibitor, and a second-order gelatinizing agent. The preparation method includes the following steps: S1: preparing a positive electrode slurry; S2: preparing an electrolyte by introducing a corrosion inhibitor into the magnesium bromide electrolyte, followed by adding a second-order gelatinizing agent for gelatinization treatment to obtain a slow-release gelatinized electrolyte; S3: preparing a positive electrode steel shell; S4: assembling the battery. The technical solution of this invention not only slows down the corrosion rate of the negative electrode material and improves the utilization rate of the negative electrode material, but also solves the problems of voltage hysteresis and volume expansion during battery discharge; furthermore, it can match the reaction rates of the positive and negative electrodes.

The invention discloses a method for mixing and coating electrolytic manganese dioxide, the electrolytic manganese dioxide and application of the electrolytic manganese dioxide, and belongs to the technical field of positive electrode materials for zinc-manganese batteries, the method for mixing and coating the electrolytic manganese dioxide comprises the following steps: S1, performing plasma activation pretreatment on electrolytic manganese dioxide powder; s2, nano additive dispersion liquid is prepared, the nano additive dispersion liquid comprises a nano additive and an anionic surfactant, the nano additive comprises nano TiO2, and the anionic surfactant comprises sodium dodecyl benzene sulfonate and sodium polyacrylate; s3, coating the pretreated electrolytic manganese dioxide powder with the nano additive dispersion liquid to obtain a coated material; and S4, drying and crushing the coated material. The nano additive coating layer on the surface improves the activity of the electrolytic manganese dioxide, so that the electrolytic manganese dioxide has excellent electrochemical performance in the zinc-manganese battery, the discharge capacity of the battery can be improved, and the service life of the battery is prolonged.

The invention discloses an alkaline zinc-manganese battery capable of preventing top short circuit, which comprises a steel shell internally and coaxially provided with an isolation pipe; an annular cavity is formed between the isolation pipe and the steel shell, and the annular cavity is filled with an annular positive electrode; a center cavity of the isolation tube is filled with negative electrode zinc paste; an insulating layer for electronic insulation is further arranged in the annular cavity, the insulating layer is in an annular sheet shape, the insulating layer is attached to the top face of the annular positive electrode and completely covers the top face, the inner edge of the insulating layer is tightly attached to the outer wall of the isolation pipe, and the outer edge of the insulating layer is tightly attached to the inner wall of the steel shell. According to the invention, the insulating layer is additionally arranged at the top of the annular positive electrode, so that negative electrode zinc paste overflowing out of the isolation tube after vibration can be prevented from being in contact with the top end of the annular positive electrode under the condition of violent vibration or over-discharge, and the risk of internal short circuit is effectively reduced; moreover, the formula and dosage of the annular anode zinc paste and the annular cathode zinc paste are kept unchanged, the operation is simple, and the electrical property is not sacrificed.

To provide an electrochemically active cathode material for a battery.SOLUTION: An electrochemically active cathode material includes a non-stoichiometric beta-delithiated layered nickel oxide. The non-stoichiometric beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is LixAyNi1+a-zMzO2*nH2O. In the formula, x is approximately 0.02 to 0.20, y is approximately 0.03 to 0.20, a is approximately 0.02 to 0.2, z is approximately 0 to 0.2, and n is approximately 0 to 1. In the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. In the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof.SELECTED DRAWING: Figure 1

To provide an alkaline electrochemical battery.SOLUTION: Alkaline electrochemical cells are provided, wherein dissolved zinc oxide or zinc hydroxide is included at least in the free electrolyte solution, and / or solid zinc oxide or zinc hydroxide is included in the anode, so as to slow formation of a zinc oxide passivation layer on a zinc electrode. Methods for preparing such cells are also provided.SELECTED DRAWING: Figure 1

The present invention provides an alkaline button cell that has excellent load characteristics and high reliability.　An alkaline button cell which is obtained by having a positive electrode that has a positive electrode mixture layer containing silver oxide and a conductive assistant, a negative electrode that contains zinc particles, and an alkaline electrolyte solution contained in a battery container that is composed of an outer package can, a cover plate and a resin gasket, wherein: carbon black and graphite particles are contained as the conductive assistant in the positive electrode mixture layer; and the water content in the battery container is set to 0.63-1 g per 1 g of the zinc particles in the negative electrode.

A method for treating the surface of a strip or film made of lithium or a lithium-based alloy, the method comprising the step of irradiating at least a portion of the surface of the strip or film with a laser, the irradiating step being carried out in a controlled atmosphere, and the entire area of at least a portion of the surface of the strip or film being irradiated with the laser beam.

To provide a technique which can obtain a power storage device having a wound electrode body with high productivity.SOLUTION: A manufacturing method of a power storage device (for example, battery) of one embodiment disclosed herein includes: winding step S2 of winding a positive electrode 22 and a negative electrode 24 through a separator 26 to manufacture a wound body 20A; and pressing step S3 of press-molding the wound body 20A after the winding step S2 to form flat wound electrode bodies 20a, 20b, 20c. In the winding step S2, the separator which has an adhesive layer 6 partially on at least one surface is used. The adhesive layer 6 includes: a first adhesive area 6A; and a second adhesive area 6B. A thickness T1 of the first adhesive area 6A is 1.5 times or more of a thickness T2 of the second adhesive area 6B. Furthermore, herein, the method further includes formation step S1 before the winding step S2.SELECTED DRAWING: Figure 1

This invention discloses a self-powered, controllable, self-destructing microcapsule for monitoring intragastric pressure, belonging to the field of medical capsule technology. It aims to solve problems existing in current intragastric monitoring capsules, such as short power lifespan, uncontrollable gastric retention and expulsion, and bulky size and difficulty in swallowing due to modular design. The capsule includes a capsule shell, within which are sequentially arranged a retention unit, a circuit unit, and a primary battery unit. The retention unit ensures the capsule remains in the stomach, the circuit unit monitors intragastric pressure, and the primary battery unit supplies power to the circuit unit. This invention integrates self-powering, long battery life, controllable retention, and high miniaturization, providing a novel solution with significant clinical translational value for non-invasive, long-term, and safe monitoring of intragastric pressure.

To provide long and ultra-long duration energy storage systems.SOLUTION: There are provided a battery, a bulk energy storage system including the battery, and / or a method of operating the bulk energy storage system including the battery. The battery may include a first electrode, an electrolyte, and a second electrode, wherein one or both of the first electrode and the second electrode comprise direct reduced iron ("DRI"). The DRI may be in the form of pellets. The pellets may comprise at least about 60 wt.% iron by elemental mass, based on the total mass of the pellets. One or both of the first electrode and the second electrode comprises from about 60% to about 90% iron and from about 1% to about 40% of a component comprising one or more of materials selected from a group of SiO2, AI2O3, MgO, CaO, and TiO2.SELECTED DRAWING: Figure 1

The present disclosure provides an alkaline dry battery that can suppress the occurrence of internal short-circuiting during medium-load intermittent discharge. An alkaline dry battery according to the present disclosure comprises a hollow tubular positive electrode (2) that is provided in a battery case (1), a gel-like negative electrode (3) that is filled in a hollow part of the positive electrode (2), and a separator (4) that is disposed between the positive electrode (2) and the negative electrode (3), wherein the negative electrode (3) contains a zinc powder and a surfactant. The negative electrode (3) further contains a sulfate in the range of 0.01-0.5 mass%, in terms of sulfuric acid ions with respect to the mass of the negative electrode.

The invention discloses an alkaline zinc-manganese battery low-temperature-resistant electrolyte which comprises sodium hydroxide and potassium hydroxide, the potassium hydroxide accounts for 25%-35% of the total mass of the electrolyte, the sodium hydroxide accounts for 0.2%-8% of the total mass of the electrolyte, and the balance is deionized water. At low temperature, the attraction capacity of sodium ions to water molecules is higher than that of potassium ions, so that free water is inhibited from forming hydrogen bonds for curing, a stable solvation shell layer of Na < + > can guide OH <-> to bypass a loose hydration shell layer of K < + >, migration resistance is reduced, the number of water molecules wrapped by positive ions is increased, the migration speed of the positive ions in a solution is improved in a low-temperature environment, and the migration rate of the positive ions in the solution is increased. And the conductivity of the solution is improved.

The present invention discloses a neutral zinc-air fiber battery and a preparation method thereof, belonging to the technical field of batteries. Aiming at the problem in the prior art that due to too large bending stiffness, bending causes poor charge and discharge effects, the present invention provides a neutral zinc-air fiber battery and a preparation method thereof, which are assembled in a coaxial structure by a carbon nanotube / zinc powder composite fiber negative electrode, a double-layer gel electrolyte, and a platinum / ruthenium oxide modified carbon nanotube film positive electrode. The method steps are as follows: preparing a carbon nanotube / zinc powder composite fiber; preparing an organic gel electrolyte; preparing a hydrogel electrolyte precursor, and in-situ gelating the hydrogel electrolyte precursor on the composite fiber after curing with the organic gel electrolyte to obtain a fiber negative electrode wrapped with a double-layer gel; winding the platinum / ruthenium oxide nanoparticle modified carbon nanotube film positive electrode around the fiber negative electrode wrapped with the double-layer gel. It has a small bending stiffness and has a good charge and discharge curve for different degrees of bending.

To restrain liquid spill of alkaline battery for a long period of time.SOLUTION: An alkaline battery includes a bottomed cylindrical case having an opening end portion, a power generating element accommodated in the case, and a sealing unit for sealing the opening end portion. The power generating element includes a hollow cylindrical positive electrode, a negative electrode filled in the hollow of the positive electrode, and a separator interposed between the positive electrode and the negative electrode. The opening end portion has an annular groove that is recessed inward and supports the sealing unit, and the end face of the negative electrode on the opening end portion side is covered with a gel-like shielding layer. The gel-like shielding layer contains an alkaline electrolyte and cross-linked polyacrylic acid. The content of the cross-linked polyacrylic acid in the gel-like shielding layer is 2.0% by mass or more and 3.0% by mass or less.SELECTED DRAWING: Figure 1

To provide a power generation device which does not induce heat generation or increase of entropy when generating electricity.SOLUTION: There is provided a power generation device which generates electricity by arranging a medium including an electric conductor in the state of a percolation threshold of an electric conduction between two electrodes. Although the principle is that the free motion energy of the medium of the electric conductor in the state of a percolation threshold is converted to an electric energy, the present invention is not limited to the principle.SELECTED DRAWING: Figure 1

The application discloses an acid-activated regenerated brick-mixed micro-powder-metakaolin geopolymer battery and a preparation method thereof. The geopolymer battery is formed by sequentially stacking and pouring a geopolymer positive electrode layer, a geopolymer electrolyte layer and a geopolymer negative electrode layer. The three layers all comprise regenerated brick-mixed micro-powder and metakaolin. The preparation method comprises the following steps: preparing geopolymer positive electrode layer slurry, geopolymer electrolyte layer slurry and geopolymer negative electrode layer slurry respectively; sequentially pouring the positive electrode layer, the electrolyte layer and the negative electrode layer, and vibrating and standing each layer after pouring according to preset parameters, and arranging copper-plated steel fibers in the whole structure by a magnetic field; and curing and coating the whole structure. The geopolymer battery has excellent conductivity, load capacity and interlayer bonding strength, and the whole structure is stable.

To provide an alkaline battery in which a negative electrode mixture is less likely to leak.SOLUTION: An alkaline battery 1 includes: a bottomed cylindrical positive electrode can 2 having a bottom face on which a positive electrode terminal is formed; a cylindrical positive electrode mixture 3 provided inside the positive electrode can 2; a cylindrical separator 7 provided on the inner peripheral side of the positive electrode mixture 3; a negative electrode mixture 5 filling the inner peripheral side of the separator 7; a current collector rod 6; a gasket 14 having a support part 41 and an annular outer peripheral part 42 and closing an opening 18 of the positive electrode can 2; a negative electrode terminal plate 12 provided opposite the separator 7 with the gasket 14 sandwiched therebetween; a first facing part 421 facing the inner peripheral surface 7a of the separator 7 at an end on the negative electrode terminal plate 12 side; and a second facing part 422 facing the outer peripheral surface 7b of the separator 7 at an end on the negative electrode terminal plate 12 side. A buffer part 43 is formed on the outer peripheral part 42, and the first facing part 421 and the second facing part 422 are provided at positions avoiding the buffer part 43 as viewed along the central axis C of the positive electrode can 2.SELECTED DRAWING: Figure 2

Systems, apparatuses, and / or the like are provided. In some embodiments, an electrochemical cell may include a container, a ring-shaped cathode disposed within the container, wherein the ring-shaped cathode defines an open interior, an anode disposed within the open interior of the ring-shaped cathode, a separator disposed between the cathode and the anode, an electrolyte solution, and a current collector electrically connected with a portion of the container, wherein the current collector is positioned at least partially within the anode. For example, current collectors may include a base including a first material that is fixedly attached to the portion of the container and a zinc component composed of a second material and fixedly attached to the base.

The present invention belongs to the technical field of fiber batteries, and discloses a fiber battery and a method for large-scale preparation thereof, wherein the method comprises: uniformly coating a layer of positive electrode active slurry on the surface of a positive electrode substrate by a roller device to obtain a positive electrode material; tightly weaving a diaphragm-like layer on the axial surface of the positive electrode material by a lower weaving area of ​​a double-layer weaving machine to form a positive electrode material with a diaphragm-like layer on the surface; and tightly winding a layer of negative electrode material on the surface of the diaphragm-like layer by an upper weaving area to form a structure of positive electrode, diaphragm, and negative electrode from the inside to the outside, to obtain a fiber battery. The present invention provides a simple, scalable, and industrialized fiber battery preparation process, which can realize the one-time molding of the overall structure of the fiber battery and the continuous and large-scale preparation of the whole battery.

To suppress the amount of release agent added to a positive electrode in order to prevent a positive electrode from cracking when the positive electrode is removed from a molding die.SOLUTION: A battery manufacturing method includes granulating a first powder containing manganese dioxide MnO2 and graphite C, separating the first powder into a plurality of second powders having different particle sizes, separating each of the plurality of third powders from the plurality of second powders, generating a positive electrode mixture by mixing the plurality of third powders, and molding the positive electrode mixture into a positive electrode.SELECTED DRAWING: Figure 2

A catalyst for a metal-air battery includes a nitrogen-doped graphitic carbon support and atomically dispersed niobium atoms disposed on the nitrogen-doped graphitic carbon support. A positive electrode for a metal-air battery includes a catalyst coated layer comprising niobium atoms and a nitrogen-doped graphitic carbon support. The niobium atoms are atomically dispersed on the nitrogen-doped graphitic carbon support. A metal-air battery includes an negative electrode, an electrolyte, and a positive electrode. The positive electrode includes a catalyst coated layer that includes niobium atoms and a nitrogen-doped graphitic carbon support. The niobium atoms are atomically dispersed on the nitrogen-doped graphitic carbon support.

To provide a battery capable of improving structural efficiency with a simple structure.SOLUTION: A battery includes an electrode laminate. End face current collectors are disposed on both surfaces of the direction of lamination of the electrode laminate. Internal current collectors are laminated inside the electrode laminate. Each internal current collector has a connection part extending from the side surface of each electrode laminate. The connection part extends in the direction of lamination along the side surface of the electrode laminate and is arranged on the same surface as at least one end-surface current collector.SELECTED DRAWING: Figure 1

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.

A negative electrode mixture layer (12b) has an extension section (38) that extends to the winding starting side from the winding inside of a starting end (40) on the winding starting side of a positive electrode (11). A first distance (d1) between the center (40a) of the starting end (40) in the width direction and a mixture layer starting end (50) on the winding starting side of the negative electrode mixture layer (12b) is greater than at least one of a second distance (d2) between one end (40b) of the starting end (40) in the width direction and the mixture layer starting end (50), and a third distance (d3) between the other end (40c) of the starting end (40) in the width direction and the mixture layer starting end (50).

The invention provides a partitioned iontophoresis and self-power-generation micro-current composite mask which comprises a mask base body, an iontophoresis functional area and a control module and further comprises a self-power-generation micro-current functional area. The self-generating micro-current functional area is not electrically connected with an external power supply, comprises at least one primary battery unit made of two different metal materials and an electrolyte medium, and spontaneously generates micro-current through an electrochemical principle. Multiple effects of moisturizing, whitening, wrinkle resisting, lifting and tightening and the like are achieved at the same time through one-time nursing, and energy distribution is more reasonable.

An electrolyte additive, a preparation method therefor, and an application thereof. The electrolyte additive comprises a halogen-substituted tris(oxalato)diborate, the halogen-substituted tris(oxalato)diborate having a structure as shown in formula I, where R1 and R2 are each independently selected from one of the halogens, and M+ are selected from one of the alkali metal ions. The halogen-substituted tris(oxalato)diborate has relatively good chemical stability and electrochemical stability, is used in an electrolyte of a secondary battery, and improves the thermal stability effect of a product. In addition, since the halogen-substituted tris(oxalato)diborate has more oxalate functional groups, the ion concentration in the electrolyte can be well adjusted, which can effectively improve the conductivity of an electrolyte, such that the voltage of a battery can be more easily maintained within a suitable range.

The invention belongs to the technical field of medical materials, and particularly discloses a primary battery effect hydrogen production anti-oxidation hydrogel microneedle patch and preparation and application thereof.The method comprises the following steps that a polyvinyl alcohol solution, a hydroformylated bacterial cellulose solution, a quaternized chitosan solution and a silver nanowire dispersion liquid are prepared; preparing a needle tip solution; preparing a lower substrate solution; preparing an upper-layer substrate solution; preparing a microneedle patch primary product; and carrying out salting-out treatment on the primary product of the microneedle patch by using a sulfate solution to obtain the hydrogen-producing antioxidant hydrogel microneedle patch based on the primary battery effect. According to the primary battery effect hydrogen production anti-oxidation hydrogel microneedle patch and preparation and application, the patch can spontaneously generate therapeutic micro-current and hydrogen in a wound microenvironment, photo-thermal antibiosis and drug activity are cooperated, and then multi-mechanism synergistic treatment of chronic refractory wounds such as diabetes and the like is achieved.