Abstract: An electrolyte solution includes a lithium salt, an organic solvent and a diluent. The organic solvent includes at least one of a compound represented by Formula (I) or a compound represented by Formula (II). In Formula (I), R1 and R2 are each independently selected from C1-C10 alkyl, and k is an integer selected from 1-3. In Formula (II), X, Y, and Z are each independently selected from O or S, where for at least two of X, Y, and Z, one is O and the other is S; R3 and R4 are each independently selected from C1-C10 alkyl; and m and n are each independently an integer selected from 1-3.

Abstract: The present application relates to a battery cell, a battery and a power consuming device. The battery cell comprises an electrode assembly and a current collecting member. The electrode assembly comprises a main body portion and tabs extending from the main body portion. The current collecting members each comprises a guide section and a tab connecting section, the tab connecting section connected to a respective tab, the guide section located on the side of the main body portion from which the tab extends and connected to the tab connecting section, a fold is provided between the tab connecting section and the guide section and extends in a first direction, and the guide section comprises a first end and a second end opposite to each other in the first direction. The guide section is provided with a reinforcement portion extending from the first end to the second end.

Abstract: The present application discloses a current collector, and manufacturing method and equipment thereof, and a current collector preform, wherein the current collector may include a porous foam metal part and solid metal part(s); the porous foam metal part may be uncompressed, and the porous foam metal part may include a first edge and a second edge oppositely distributed in a first direction, the first direction may be perpendicular to the thickness direction of the current collector; the first edge and/or the second edge may be connected with the solid metal part(s).

Abstract: A current collector may comprise a strength enhancement layer and a current collecting layer, wherein the current collecting layer may be stacked and bonded with the strength enhancement layer, and the current collecting layer may comprise a foam metal portion and a solid metal portion.

Abstract: An electrode, a method for preparing the same, a battery, and an electrical apparatus are provided. The electrode comprises a current collector layer having a porous structure and being gas permeable; and an active material layer laminated on at least part of surface of the current collector layer and located outside pores of the porous structure.

Abstract: A negative electrode plate may comprise a negative electrode current collector and a negative electrode film layer provided on at least one surface of the negative electrode current collector; the negative electrode film layer may comprise a first region and a second region along the width direction, the first region may not comprise a solid electrolyte, while the second region may comprise a solid electrolyte.

Abstract: A separator, a battery cell, a battery, and an electric device are described. The separator comprises a porous base material and a ferroelectric coating located on at least one surface of the porous base material. The ferroelectric coating comprises a ferroelectric material. The ferroelectric material comprises an inorganic ferroelectric and a ferroelectric polymer. The ferroelectric polymer comprises polyvinylidene fluoride and a copolymer thereof, the ferroelectric polymer comprises ?-phase polyvinylidene fluoride, and the content of the ?-phase polyvinylidene fluoride in the ferroelectric polymer is greater than or equal to 60%. The separator can slow the continuous growth of dendrites in a direction perpendicular to an electrode sheet, reduce internal short circuits of the battery and improve the reliability of the battery, and can further improve the coulombic efficiency and rate performance of the battery.

Abstract: A negative electrode sheet, a secondary battery, a battery module, a battery pack, and an electric device. The negative electrode sheet includes an electrode sheet body, a tab, and a connecting member. The electrode sheet body includes a plurality of layers of carbon fibers. At least two of the plurality of layers of carbon fibers are connected to the connecting member. The tab is electrically connected to the electrode sheet body through the connecting member.

Abstract: Provided are a carbon fiber electrode sheet, a lithium metal battery, a battery module, a battery pack, and an electric apparatus. The carbon fiber electrode sheet includes double layers of carbon fibers and a tab, and a lower part of the tab is disposed between the double layers of carbon fibers to form a tab extraction structure enveloped by the double layers of carbon fibers. By forming the tab extraction structure enveloped by the double layers of carbon fibers, the risk of the tab detachment due to unidirectional force application is reduced, and an electrolyte can contact the tab extraction structure only by passing through the double layers of carbon fibers, thereby reducing the risk that the electrolyte washes and erodes the tab extraction structure, and further enhancing the stability of connection between the tab and the carbon fibers.

Abstract: An Mn-M binary multi-phase alloy has Mn content satisfying 39 wt %?Mn?78 wt %, with the balance including metal M. The standard electrode potential of the metal M is higher than the standard electrode potential of Mn, and an ?Mn phase, a ?M-Mn phase, and a ??Mn-M phase are distributed in the binary metal multi-phase alloy. A method for preparing the Mn-M binary multi-phase alloy, a use thereof in preparation of a porous material, a current collector including the porous material, a secondary battery, and an electrical device.

Abstract: Embodiments of this application provide a gas adsorption apparatus, an end cap assembly, a battery cell, a battery, and an electrical device, and relate to the technical field of batteries. The gas adsorption apparatus is applicable to a battery cell, and includes: a main body, containing a chamber; a first pressure relief portion, disposed on the main body, and configured to be actuated when an internal pressure or temperature of the battery cell reaches a first threshold, so as to implement communication between the chamber and an interior of the battery cell; and a gas adsorption unit, disposed in the chamber.

Abstract: An insulation tape, a battery unit, a battery, a method and apparatus for preparing a battery unit, and a power consuming apparatus are provided. In some embodiments, the insulation tape includes a bottom surface coverage area, and a plurality of first side surface coverage areas and a plurality of second side surface coverage areas which are alternately arranged. Each of edges of the bottom surface coverage area is connected to one of the first side surface coverage areas or one of the second side surface coverage areas; each of the first side surface coverage areas includes a bottom covering portion and two side surface overlapping portions, a bottom edge of the bottom covering portion being connected to one of the edges of the bottom surface coverage area.

Abstract: A battery and an electrical device. The battery comprises an electrolyte solution. The electrolyte solution comprises a first diluent, the first diluent comprising at least one of the compounds represented by formulas (I) to (IV), where R11, R12, R13, R14, R21, R22, R23, R24, R31, R32, R33, R34, R35, R41, R42, R43 and R44 each independently comprise any one of H, F, Cl, Br, I, alkyl having 1-3 carbon atoms, and haloalkyl having 1-3 carbon atoms, and at least one of R11, R12, R13 and R14 comprises any one of haloalkyl having 1-3 carbon atoms, F, Cl, Br and I.

Abstract: A porous metal structure and a preparation method for the same. The preparation method for the porous metal structure includes the following steps: performing first de-alloying treatment on an alloy foil to form pores, then performing reduction annealing treatment in a reducing gas atmosphere, and finally performing second de-alloying treatment to obtain the porous metal structure.

Abstract: A method includes: providing a cold-rolled alloy foil material; carrying out recrystallization annealing treatment on the alloy foil material, and then carrying out first cooling treatment to obtain an alloy foil material having a first component phase; carrying out phase separation thermal treatment on the alloy foil material, and then carrying out second cooling treatment to separate out a second component phase and obtain an alloy foil material having both the first and second component phase, where the temperature of the phase separation thermal treatment is smaller than the temperature of the recrystallization annealing treatment, and an average cooling rate of the second cooling treatment is smaller than an average cooling rate of the first cooling treatment; and carrying out dealloying treatment on the alloy foil material, carrying out reduction annealing treatment in a reducing gas atmosphere, and carrying out third cooling treatment to obtain a porous metal structure.

Abstract: An anode current collector and a preparation method therefor, a battery cell, a battery, and an electric device. The anode current collector includes a metal substrate and metal nanoparticles located on at least part of a surface of the metal substrate; and the metal substrate includes a first metal element, and the first metal element is made of a material the same as the metal nanoparticles.

Abstract: The present application provides a separator, a battery and an electric device. The separator includes a porous base material, and a first coating and a second coating which are respectively located on the two surfaces of the porous base material; when the separator is used for a battery, the first coating faces a negative electrode, and the second coating faces a positive electrode; the first coating includes first particles, the first particles include a solid electrolyte, and the content of the first particles in the first coating is greater than 50 wt %; the second coating includes second particles, the second particles include inorganic particles capable of reacting with lithium dendrites, and the content of the second particles in the second coating is greater than 50 wt %.

Abstract: A separator, a battery cell, a battery, and an electric device are described. The separator comprises a porous base material and a ferroelectric coating located on at least one surface of the porous base material. The ferroelectric coating comprises a ferroelectric material. The ferroelectric material comprises an inorganic ferroelectric and a ferroelectric polymer. The ferroelectric polymer comprises polyvinylidene fluoride and a copolymer thereof, the ferroelectric polymer comprises ?-phase polyvinylidene fluoride, and the content of the ?-phase polyvinylidene fluoride in the ferroelectric polymer is greater than or equal to 60%. The separator can slow the continuous growth of dendrites in a direction perpendicular to an electrode sheet, reduce internal short circuits of the battery and improve the reliability of the battery, and can further improve the coulombic efficiency and rate performance of the battery.

Abstract: A positive electrode sheet, a battery, and an electric apparatus. The positive electrode sheet includes a positive electrode current collector, and an active material layer and an inactive material layer that are disposed on at least one surface of the positive electrode current collector, the inactive material layer being disposed around a periphery of the active material layer, the active material layer including a positive electrode active material, and the active material layer and the inactive material layer being disposed in a same layer.

Abstract: A preparation method for the three-dimensional porous copper comprises the following steps: providing a copper alloy matrix, wherein the copper alloy matrix comprises a Cu element and a non-Cu metallic element, and the standard electrode potential of the non-Cu metallic element is less than that of the Cu element; providing a corrosive liquid, wherein the corrosive liquid comprises a neutral salt, a weakly acidic complexing agent, and a solvent, the molar concentration of the neutral salt is recorded as C1, the molar concentration of the weakly acidic complexing agent is recorded as C2, the molar concentrations are both in the unit of mol/L, 0.04?C2/C1?0.60, and C2 is less than or equal to 0.20 mol/L; and using the corrosive liquid as an electrolyte to perform electrochemical corrosion on the copper alloy matrix so as to obtain three-dimensional porous copper.