159results 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 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 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 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 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.

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.

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.

A multi-layer current collector for an anodeless lithium-metal cells is described. The multi-layer current collector includes a current collector layer, a seed layer disposed on the current collector layer, and a protective shield layer disposed on the current collector layer. When incorporated into a Li-metal cell along with an electrolyte, charging of the cell leads to Li ion transferring through the shield layer, saturating the seed layer and ultimately forming a new Li metal layer between the shield layer and the lithiated seed layer. Discharging the cell reverses this process and results in disappearance of the Li metal layer and lithium passes back through the shield layer and into the electrolyte. The lithium in the seed layer also passes back into the electrolyte such that the current collector reverts to its initial structure prior to charging.

The invention discloses shaping equipment, a shaping method and a battery production line, and relates to the technical field of battery processing. Wherein the shaping equipment is used for shaping a naked battery cell, the naked battery cell is provided with two openings, the two openings are oppositely arranged along a first direction, and the naked battery cell comprises a first area and a second area which are arranged along the first direction; the shaping equipment comprises a bearing table, a first clamping assembly, a second clamping assembly, a first pressing plate and a second pressing plate. The bearing table is used for placing a naked battery cell; the first clamping assembly is arranged opposite to the first area and clamps the inner wall and the outer wall of the first area. The second clamping assembly is arranged opposite to the second area and clamps the inner wall and the outer wall of the second area. The first pressing plate is arranged opposite to the side, away from the bearing table, of the first area. The second pressing plate is opposite to the side, away from the bearing table, of the second area. According to the invention, the risk of abnormal gaps between the layers of the inner ring of the naked cell can be reduced.

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.

Alkaline electrochemical cells are provided, wherein methods to decrease or eliminate shorting in batteries by preventing zinc oxide reaction precipitate from creating a conductive bridge between the two electrodes. The alkaline electrochemical cell comprises solid zinc oxide particles in the anode and dissolved zinc oxide or zinc hydroxide in one or more of the catholyte, the anolyte, and the free electrolyte. Optimally, the solid zinc oxide particles have a large Brunauer, Emmett, and Teller (BET) surface area and / or a large median particle size (D50). The cells may also comprise a certain amount of surfactant in the separator.

The utility model provides an alkaline zinc-manganese battery which comprises a battery steel shell, a cathode current collector assembly is assembled at the upper end of the battery steel shell, an anode ring is coaxially embedded in the battery steel shell, an isolation tube is sleeved in a central cavity of the anode ring, and cathode zinc paste is filled in the isolation tube; an annular closed cavity is defined by the top surface of the positive electrode ring, the bottom surface of the negative electrode current collector assembly, the outer circumferential surface of the isolation tube and the inner circumferential surface of the battery steel shell, a hydrogen storage piece is embedded in the closed cavity, and the hydrogen storage piece is formed by pressing a hydrogen storage material. According to the alkaline zinc-manganese battery disclosed by the utility model, hydrogen generated in the battery can be transferred and stored in the hydrogen storage material in time, so that air pressure change in the battery caused by hydrogen evolution in the battery and side effects caused by the air pressure change are prevented.

An electrochemical apparatus includes an electrode assembly, a packaging bag and a first connecting layer. The electrode assembly includes an adhesive layer. An outermost current collector of the electrode assembly includes a first bending portion, a second bending portion opposite to the first bending portion and a flat portion connected between the first bending portion and the second bending portion. The adhesive layer is pasted to a surface of the flat portion facing toward a winding center of the electrode assembly. The packaging, bag is configured to accommodate at least a part of the electrode assembly. The first connecting layer is pasted to the first bending portion and to a part of an outer surface of the flat portion. A projection of the second connecting, layer and a projection of the adhesive layer in a direction perpendicular to an outer surface of the flat portion have an overlapping zone.

Electrochemical cells are provided. Exemplary electrochemical cells can include a container, an electrolyte, an anode, a cathode, a current collector, and a separator disposed between the anode and the cathode. In some embodiments, the anode and cathode can define an interfacial area y, the separator defines a thickness x, and the relationship between the interfacial area y and the separator thickness x is 26.532x -0.15 ≦y≦284.5x -0.675 It is defined between.

An electrochemical cell having a cathode comprising a fluorinated carbon nanotube (F-CNT), an anode and a solid electrolyte; wherein the solid electrolyte comprises an electrolyte component comprising i. 5 to 50 wt.% of an alkali metal-containing electrolyte salt, and ii. 50 to 95 wt.% of a polymer. Embodiments do not require a carbon-based conductive-adjuvant in the cathode. The thickness of the solid electrolyte may be least 5 microns. A container comprising cell may have space to allow for thermal expansion thereof. They may be used at elevated temperatures greater than 65 °C. or more, such as in a subterranean well.

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

Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a zinc sulfide additive, wherein the zinc sulfide additive comprises crystalline cubic zinc sulfide. Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a manganese sulfide additive, wherein the manganese sulfide additive comprises crystalline cubic manganese sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode; and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic zinc sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic manganese sulfide.

The present invention provides a battery that uses a low-pH aqueous solution as the electrolyte while simultaneously suppressing the voltage drop that occurs as discharge progresses and ensuring good discharge characteristics. [Solution] The battery of the present invention has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte, all contained within an outer casing. The positive electrode contains silver oxide as a positive electrode active material, and the electrolyte is an aqueous solution with a pH of 3 to 12 and containing an alkali metal halide as an electrolyte salt.

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 present application relates to a tab roll changing device and a winding apparatus. The tab roll changing device includes an unwinding mechanism; a roll mechanism, including a transfer plate, a first floating clamping assembly, a second floating clamping assembly, and a first fixed clamping assembly; a cutting mechanism for cutting off a tab material belt clamped by the first floating clamping assembly or the second floating clamping assembly and the first fixed clamping assembly; and a belt connecting mechanism for connecting the tab material belt output by the unwinding mechanism.