405results about "Alkaline accumulator electrodes" patented technology

This invention discloses a positive electrode material and its preparation method, as well as a lithium-ion battery, relating to the field of lithium-ion battery electrode materials. The preparation method of the positive electrode material includes: (1) mixing positive electrode raw materials, binder, and dispersant uniformly in a weight ratio of 10:(0.2-2):(10-50) to obtain a slurry; (2) spray-drying the slurry to obtain a powder; and (3) sintering the powder using a fluidized bed. The binder is selected from one or more of starch, PVP, PEG, PVA, and PAN, and the dispersant is selected from one or more of ethanol, isopropanol, and water. Implementing this invention can reduce the sintering temperature of the positive electrode material, shorten its sintering reaction time, and improve its sintering quality. Specifically, the sintering time of the positive electrode material of this invention can be shortened to 2-60 min.

To provide a wound electrode body that can improve heat dissipation on the inside of the winding. [Solution] The wound electrode body 10 is a wound electrode body 10 in which a first electrode 11A and a second electrode 11B having a different polarity from the first electrode 11A are wound in a flat shape via a separator 12. In the wound electrode body 10, the first electrode 11A includes a resin substrate, a conductive layer provided on the surface of the resin substrate, and a first active material layer 200A provided on the main surface of the conductive layer located on the side opposite to the side where the resin substrate is located relative to the conductive layer. The portion of the resin substrate located on the inside of the wound electrode body 10 has higher heat dissipation than the portion located on the outside of the wound electrode body 10.

The application discloses sulfonated silk protein gel as an interface modification layer of a water-based zinc electrode and a preparation method thereof, and belongs to the technical field of negative electrode materials of zinc ion batteries. The sulfonated silk protein gel is prepared by using natural silk, raw materials are widely sourced, and the sulfonated silk protein gel is green and environment-friendly. The prepared sulfonated silk protein gel contains rich functional groups (‑OH, ‑NH‑, ‑C=O, ‑SO3H and the like), can cover the entire zinc electrode surface, forms a gel-like transition zone at the interface, and provides basic protection for the zinc electrode. In addition, the gel layer optimizes the electric field, improves the interface compatibility, can guarantee uniformity in the nucleation and growth process, plays an obvious role in controlling the dendrite growth, effectively prolongs the service life of the zinc ion battery, and improves the cycle stability of the zinc ion battery.

Generally described herein are multiphase electroactive materials and associated articles (e.g., electrodes), systems (e.g., electrochemical devices), and methods. In certain embodiments, an electroactive material comprises a first component and a second component that is softer than the first component. The first component and the second component may be intermixed such that the second component is dispersed throughout a bulk of the first component. In some embodiments, the first component comprises a first alkali metal (e.g., metallic lithium) and the second component comprises a second alkali metal (e.g., metallic sodium) and a third alkali metal (e.g., metallic potassium).

The utility model relates to the technical field of batteries, in particular to a nickel-metal hydride battery positive pole piece and a battery. The positive pole piece of the nickel-metal hydride battery comprises a base material, an active material area and a net position buffer area located on one side of the active material area are formed on the base material, a tab belt is welded to the net position buffer area, an insulating layer is pasted to the tab belt, the insulating layer at least covers part of the inner side edge of the tab belt in the width direction, and the outer side edge of the tab belt is provided with a gap between the active material area and the net position buffer area. And at least part of the net bit buffer area is covered. By adopting the mode, the stability of the battery can be improved.

The invention relates to the technical field of battery positive electrode materials, and discloses a secondary zinc-manganese battery positive electrode material, a preparation method and a secondary zinc-manganese battery, the secondary zinc-manganese battery positive electrode material comprises manganese dioxide, graphite, calcium stearate, polypyrrole and a niobium pentoxide nanometer material, the polypyrrole is coated on the surface of the manganese dioxide in an in-situ polymerization mode, and the niobium pentoxide nano material is integrated in the polypyrrole coated manganese dioxide composite material in an in-situ growth mode. According to the secondary zinc-manganese battery positive electrode material provided by the invention, a stable conductive network and an ion channel are constructed by adopting a manganese dioxide / polypyrrole / niobium pentoxide composite material, so that the conductivity and the structural stability of the positive electrode material at a low temperature are remarkably improved.

The rechargeable battery cell can include an electrode having a plurality of three-dimensional channels defined therethrough, at least 90% of the three-dimensional channels having pores between 50 nanometers and 400 microns in size. An ion exchange material can be disposed to define an interface with at least a portion of the electrode. In some embodiments, the electrode includes a zinc (Zn)-containing anode and a cathode including at least one of nickel hydroxide (Ni(OH)2), nickel oxyhydroxide (NiOOH), manganese dioxide (MnO2), copper oxide, and bismuth oxide.

The purpose of the present invention is to provide a battery module with which it is possible to pressurize a battery with a simple structure. This battery module comprises: a module housing; a battery assembly that is housed in the module housing in a vertical direction and is composed of a plurality of secondary batteries having a vertically long shape and being juxtaposed in parallel to each other; a pair of end plates that are provided on both sides of the battery assembly and face each other in the direction in which the plurality of secondary batteries are juxtaposed; and a plurality of rods that are provided perpendicular to the pair of end plates and connect the pair of end plates. Each of the rods has an extension part that extends passing through at least one end plate, and an energization means that biases at least one end plate toward the other end plate is provided in each extension part of the rod.

To provide a hydrogen storage alloy negative electrode that improves cycle life characteristics and low-temperature charge characteristics.SOLUTION: A hydrogen storage alloy negative electrode includes a hydrogen storage alloy and yttrium fluoride as an additive. The mass of yttrium fluoride is 0.1 mass part or more and 0.2 mass part or less per 100 mass parts of hydrogen storage alloy powder.SELECTED DRAWING: Figure 1

The present invention provides: a hydrogen storage alloy which is suitable for a negative electrode of an in-vehicle alkaline storage battery; an alkaline storage battery which uses this hydrogen storage alloy; and a vehicle. The present invention provides: a hydrogen storage alloy for alkaline storage batteries, the hydrogen storage alloy being used for an alkaline storage battery and having an A2B7 type crystal structure, an A5B19 type crystal structure or a AB3 type crystal structure as a main phase in combination, while being represented by general formula (1) (La1-a-bYaRb)1-cMgcNidAleCrfFeg (wherein R represents one or both of Sm and Ce; and indexes a, b, c, d, e, f and g represent numbers that satisfy 0 < a ≤ 0.12, 0 ≤ b ≤ 0.12, 0.13 ≤ c ≤ 0.27, 3.20 ≤ d + e + f + g ≤ 3.75, 0 ≤ e ≤ 0.14, 0 ≤ f ≤ 0.05 and 0 ≤ g ≤ 0.35); an alkaline storage battery which uses this hydrogen storage alloy for alkaline storage batteries in a negative electrode; and a vehicle which comprises this alkaline storage battery as a power supply for a motor.

The invention belongs to the technical field of zinc ion batteries, and particularly relates to a zinc metal negative electrode and a zinc ion battery. The zinc metal negative electrode comprises a zinc metal substrate and a coating covering the surface of the zinc metal substrate, the coating comprises a conductive metal oxide; the coating is formed on the zinc metal substrate in a manner independent of an organic polymer binder. According to the scheme, the use of an insulating organic polymer adhesive is avoided, so that the conductivity of the coating is improved, and the structural controllability of the coating is improved. The high-conductivity indium tin oxide (ITO) nanorod is prepared through cooperation of microwave solvothermal synthesis and high-temperature calcination, and a protective layer which is free of a binder and controllable in structure is constructed on the surface of the zinc foil through the electrophoretic deposition technology.

The invention discloses an L-cysteine doped ammonium vanadate positive electrode material, a preparation method thereof and application of the L-cysteine doped ammonium vanadate positive electrode material in an aqueous zinc ion battery, and belongs to the technical field of materials. The preparation method comprises the following steps: adding ammonium metavanadate and oxalic acid into deionized water, stirring and mixing, then adding L-cysteine, carrying out hydrothermal reaction on the obtained mixed solution, cooling to room temperature, carrying out centrifugal cleaning, and carrying out vacuum drying to obtain the L-NVO. L-NVO is prepared through a simple one-step hydrothermal method, L-cysteine is doped into the electrode material through further reaction, the introduction of L-cysteine not only enlarges the interlayer spacing of NVO, but also participates in the storage of zinc ions, increases the active sites of the zinc ions, effectively promotes the diffusion of ions and charge transfer, and improves the electrochemical performance of the electrode material. The conductivity of the material is improved, the internal resistance of the material is reduced, and the structural flexibility and stability of the material are maintained, so that the overall performance of the aqueous zinc ion battery is improved.

The present invention belongs to the field of alkaline zinc-nickel secondary batteries and discloses a positive electrode for zinc-nickel secondary batteries, its preparation method, and application. The positive electrode is prepared from a slurry containing water, an active substance, zinc powder, a metal compound additive, a highly conductive activated carbon material, a positive electrode additive, and a binder mixed in a certain proportion, and nickel foam. The slurry is coated using a slurry pulling method. This preparation method is simple, efficient, and highly flexible, making it conducive to large-scale production. Furthermore, the highly conductive cobalt oxide and the highly conductive activated carbon material in the zinc-nickel battery positive electrode formula provided by the present invention form an excellent conductive network, effectively increasing battery capacity and improving the stability of the positive electrode.

The invention relates to the technical field of alkaline batteries, in particular to a high-humidity-resistant and anti-corrosion alkaline battery positive electrode composite conductive material and a preparation method thereof. The positive electrode composite conductive material comprises 50-70 parts of modified carbon nanotubes, 20-30 parts of crystalline flake graphite, 5-15 parts of molybdenum-doped SnO, 3-8 parts of a binder and 0.5-2 parts of conductive carbon black. The material is particularly suitable for high-humidity and strong-alkali environments (such as ocean equipment batteries and tropical region energy storage systems), has long service life and high output efficiency, and overcomes the defects that a traditional conductive material is easy to corrode and rapid in conductivity attenuation. The preparation method disclosed by the invention is simple and convenient to operate and clear in flow, does not need complex equipment and special process conditions, reduces the production cost and the production difficulty, is easy to realize industrial production, and is beneficial to popularization and application of the technology.

To ensure easy permeation of an electrolyte solution into an electrode plate during the injection of the electrolyte solution.SOLUTION: A positive electrode plate 2 is configured so that: when a coating side surface 22a of a positive electrode mixture layer filling a positive electrode current collector 21 is divided into a plurality of regions including an upper region Wt1 and a lower region Wt3 in an up-down direction and, at an end part 22d of the positive electrode mixture layer, an average uneven width of the end part 22d of the positive electrode mixture layer in the upper region Wt1 is defined as an uneven width ΔW1 and an average uneven width of the end part 22d of the positive electrode mixture layer in the lower region Wt3 is defined as an uneven width ΔW3, uneven width ΔW1≤uneven width ΔW3 is satisfied. At the injection of the electrolyte solution, the electrolyte solution remaining at the bottom of an electrode group easily permeates from the end part 22d of the lower region Wt3.SELECTED DRAWING: Figure 7

A heating device according to an embodiment of the present disclosure is a heating device for heating an electrode, the heating device comprising: at least one heating lamp provided to face the electrode; a heating chamber having an internal accommodating space accommodating the heating lamp and configured to allow the electrode to pass therethrough; and a control module configured to be capable of controlling the temperature of the electrode.

The invention discloses a photo-assisted self-charging battery based on a phenazine positive electrode material and a preparation method of the photo-assisted self-charging battery, and belongs to the technical field of aqueous zinc batteries, a phenazine organic matter electrode with electrochemical activity and photo-response activity is used as a zinc ion storage material, and in a safe and environment-friendly aqueous electrolyte, the photo-assisted self-charging battery is prepared. The self-charging process of the organic matter electrode is realized under the photo-assisted condition by utilizing the electron hole transmission characteristic of the nitrogen-containing hybrid organic matter, and the discharge product of the phenazine organic matter electrode absorbs photons to generate electron hole pairs under the photo-assisted effect under the condition of no external power supply through the photo-assisted effect of solar energy, so that the nitrogen-containing hybrid organic matter is charged. Then, holes are diffused to the hole transport layer, electrons are injected into the electron transport layer to form voltage, and the self-charging dezincification process of the electrode is achieved by means of charge / carrier separation.

To provide an electrolyte additive, a lithium secondary battery electrolyte including the same, and a lithium secondary battery that improve the room temperature life characteristics of the lithium secondary battery while suppressing an increase in resistance during high-temperature storage.SOLUTION: An electrolyte additive according to an embodiment is represented by Chemical Formula 1. The detail regarding the Chemical Formula 1 is as described in the specification.SELECTED DRAWING: Figure 1

To provide a wound electrode body that can reduce the number of parts. [Solution] The wound electrode body 10 includes a separator 110 in which a first electrode region R1 and a second electrode region R2, each provided with an electrode layer, are alternately arranged with a gap between them. The wound electrode body 10 is formed by winding the separator 110 such that the direction in which the first electrode region R1 and the second electrode region R2 are aligned is aligned with the winding direction.

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 a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

Embodiments of the present disclosure disclose a low-cost alkaline secondary battery positive electrode material and a preparation method and application thereof, which belongs to the technical field of alkaline secondary battery. The positive electrode material includes a composite positive electrode material including manganese dioxide and partially oxidized layered hydroxide, etc. The composite positive electrode material prepared by the embodiments of the present disclosure has the advantage of a high discharge platform, or the like, with respect to a conventional manganese electrode, which significantly improves the cycling stability and reversibility of the zinc-manganese alkaline secondary battery.

The invention relates to the technical field of battery electrodes, and discloses a negative electrode coating preparation method, a negative electrode plate and a battery. According to the negative electrode coating preparation method, a zinc-based composite negative electrode plate is coated with colloid formed by taking ferric iron complex salt as an effective component; a protective film can be formed on the surface of the zinc-based composite negative pole piece in the charging and discharging process of the battery, and the protective film prevents a negative active substance from being dissolved in an electrolyte, slows down the rapid attenuation of the discharge capacity of the battery, prevents the negative pole piece from being in direct contact with the electrolyte, reduces gas production of the battery, enables zinc to be uniformly deposited and prevents zinc dendrites from being formed, so that the service life of the battery is prolonged. And the charge-discharge efficiency of the battery is improved under the condition of prolonging the cycle life.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to a preparation method and application of a leaf-shaped ZIF-L / MXene composite material. The specific operation comprises the following steps: stirring and mixing a suspension of MXene and a zinc salt to obtain a mixed solution; the mixed solution and 2-methylimidazole are stirred to react, so that leaf-shaped ZIF-L uniformly and vertically grows on the surface of MXene, and the leaf-shaped ZIF-L / MXene composite material is obtained. The method is simple in process and mild in reaction condition, the obtained composite material has the porous structure of leaf-shaped ZIF-L and the conductive characteristic of MXene, and the iodine loading capacity and the electrochemical performance of the positive electrode of the zinc-iodine battery can be effectively improved.

The invention relates to a cylindrical battery cell housing having an aluminum material, to a method for producing a cylindrical battery cell housing, and to the use of an aluminum material in order to produce a cylindrical battery cell housing. The aim of the invention is to provide a cylindrical battery cell housing with a CO2 footprint which is reduced in comparison to the current reference material steel, said cylindrical battery cell housing simultaneously allowing an improved heat conduction and a reduced weight of the battery cell. This is achieved in that the cylindrical battery cell housing has an aluminum material in which the ratio of the carbon dioxide (CO2e) quantity emitted during the production of the aluminum material, in kgCO2e per kgAl material , to the yield point Rp0.2 of the aluminum material, in MPa, of CO2e / Rp0.2 is ≤ 1.9% kgCO2e / (MPa*kgAl material).

An alkaline storage battery includes a positive electrode. The positive electrode includes a positive electrode mixture. The positive electrode mixture contains a nickel compound and a metal compound. The nickel compound is a positive electrode active material The metal compound is a compound of at least one metal element selected from the group consisting of titanium, niobium, tungsten, vanadium, molybdenum, zirconium, and tantalum. A ratio Wm / Wn of a mass Wm of the metal compound contained in the positive electrode mixture to a mass Wn of the nickel compound contained in the positive electrode mixture in terms of nickel hydroxide ranges from 0.2 / 100 to 5.0 / 100. The metal compound contains iron at a mass ratio ranging from 10 ppm to 10000 ppm. A ratio We / Wp of a mass We of the alkaline electrolyte to a mass Wp of the positive electrode mixture ranges from 0.35 to 1.0.

The invention belongs to the technical field of battery positive electrode material preparation, and particularly relates to a cross-linked conjugated polymer, a preparation method and application in an alkali metal battery. When the cross-linked conjugated polymer is used as a positive electrode, the cross-linked conjugated polymer shows excellent performance in lithium, sodium and potassium ion batteries: the average discharge voltage is as high as 3.4-3.5 V, which is beneficial for improving the energy density of the battery; under extremely high current density, high capacity exceeding 120mAh. G <-1 > can still be released, and extremely fast dynamic characteristics are shown; and under the harsh test condition, the capacity retention ratio still reaches up to 85%-90%.

A nickel-hydrogen secondary battery (2) comprises an outer can (10) and an electrode group (22) housed in the outer can (10) together with an alkaline electrolyte. The electrode group (22) is formed by overlapping a positive electrode (24) containing a positive electrode mixture and a negative electrode (26) containing a negative electrode mixture via a separator (28). The positive electrode mixture comprises nickel hydroxide solid-dissolved with zinc as a positive electrode active material and zinc oxide as a positive electrode additive. The negative electrode mixture comprises hydrogen storage alloy particles and a negative electrode additive. The negative electrode additive is a composite of yttrium fluoride loaded on carbon black, and the composite covers a portion of the surface of the hydrogen storage alloy particles.

A heating device for heating an electrode according to an embodiment of the present disclosure includes at least one heating lamp disposed to face the electrode; a heating chamber having an internal receiving space accommodating the heating lamp and configured to allow the electrode to pass through; and a control module configured to adjust the temperature of the electrode.

The invention belongs to the field of aluminum air batteries, discloses an aluminum air battery anode material as well as a preparation method and application thereof, and aims to solve the problems of low anode utilization rate and poor electrochemical performance caused by serious self-corrosion of the current aluminum air battery anode. The aluminum air battery anode material comprises the following components in percentage by mass: 0.5 to 2.5 percent of Zn, 0.1 to 1.0 percent of In, 0.02 to 0.3 percent of Sn, 0.1 to 1.6 percent of Mn and the balance of Al. The aluminum air battery anode material which is excellent in electrochemical performance, low in self-corrosion rate and high in anode utilization rate and energy density is successfully prepared through a water-cooled copper crucible vacuum induction melting method, heat treatment, rolling and other machining processes, and a new thought is provided for design of the aluminum air battery anode.