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: An electrolyte solution for a lithium metal battery, a lithium metal battery and an electrical device. The electrolyte solution for a lithium metal battery includes an organic solvent. The organic solvent includes a phosphate compound including a silicon-containing group and at least one phosphate group, where an oxygen atom of at least one phosphorus-oxygen single bond in the phosphate group is connected to a silicon atom of the silicon-containing group by a covalent single bond.

Abstract: A polymer and a preparation method therefor, a gel polymer electrolyte, a battery, and an electrical device are disclosed. A general formula of the polymer is shown in formula (I), wherein m is 0 or 1; n is a positive integer; X1 and X2 each independently include oxygen, sulfur or imino; X3 includes oxygen or sulfur; Y includes oxygen, sulfur, imino, —S—C1-8 alkylene unsubstituted or substituted, —NH—C1-8 alkylene unsubstituted or substituted, C1-8 alkylene unsubstituted or substituted, and C1-8 alkoxylene unsubstituted or substituted; R1, R2, R3, and R4 each independently include any one of hydrogen, fluorine, C1-10 alkyl unsubstituted or substituted, and C1-10 alkoxyl unsubstituted or substituted; R5 includes any one of C1-10 alkyl unsubstituted or substituted with any group and formula (A) and R9 includes C1-10 alkyl unsubstituted or substituted.

Abstract: This application provides an electrolyte solution, a battery cell, a battery, and a power consuming apparatus. The electrolyte solution includes a solvent. The solvent includes a first solvent. The first solvent is an organosiloxane compound. The content of the first solvent is greater than or equal to 20% of the total weight of the solvent.

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: The present application belongs to the technical field of batteries, and in particular, relates to a laminated battery cell, a secondary battery, and an electric device. The laminated battery cell provided by the present application includes a positive electrode sheet, a negative electrode sheet, and a separator. The separator includes a separator body. The separator body includes a side surface facing the negative electrode sheet. The side surface has a side edge, and an adhesive film layer is disposed on at least part of the side edge. The adhesive film layer is disposed along a first direction and/or a second direction of a plane where the separator body is located to form an accommodating region. The negative electrode sheet is located in the accommodating region.

Abstract: An electrolyte, a secondary battery, and an electric device. The electrolyte comprises a component, a nitrile solvent. The nitrile solvent comprises a compound represented by formula (1): wherein: L is selected from any one of C(R1R2), O, Si(R3R4), B(R5), P(R6R7R8), and N(R9); R1-R9 are each independently selected from at least one of H, halogen, substituted or unsubstituted alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, amino, and cyano, and R1 and R2 are not cyanos and H; R11 is an alkane chain containing 1-4 carbon atoms; R12-R14 are each independently selected from at least one of H, halogen, substituted or unsubstituted alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, amino, and cyano; and when L is C(R1R2), R12-R14 are not cyanos.

Abstract: An electrolyte solution, a battery cell including the electrolyte solution, a battery including the battery cell, and a power consuming apparatus including the battery. The electrolyte solution includes a first anion represented by Formula (I), where X, a, b, R1, and R2 are respectively as defined in this disclosure.

Abstract: An electrolytic solution, a secondary battery and an electric device are described. The components of the electrolyte comprise a functional compound represented by formula (1). In formula (1), T1-T3 are each independently selected from any one of an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, an alkynyl group having 2-10 carbon atoms, and groups represented by following formulae (a)-(f). Among T1-T3, at least one is selected from the group represented by formula (a), and at least one is selected from the group represented by formula (b), (c), (d) or (e). In a charging/discharging process of the electrolyte, the functional compound represented by formula (1) can capture an oxidation product and improve the toughness of a formed SEI film, thereby improving the cycle performance of a secondary battery.

Abstract: An electrolyte solution, a secondary battery, and an electrical apparatus. Components of the electrolyte solution include an electrolyte salt and a fluorine-containing sulfonamide solvent. The fluorine-containing sulfonamide solvent includes a compound represented by formula (1) in the disclosure, wherein T1 is selected from any one of the following formulas (1-1) to (1-3) in the disclosure: R1 and R2 are each independently selected from any one of alkyl having 1-3 carbon atoms, phenyl, and a sulfone group; T2 is fluorine-substituted alkyl group having 1-4 carbon atoms; and * represents a site of connection.

Abstract: This application discloses a nonaqueous electrolyte solution, a secondary battery containing the nonaqueous electrolyte solution, and an electrical device. The nonaqueous electrolyte solution includes: a compound A including a saturated five-membered ring or six-membered ring and at least one fluorine-containing substituent, where the ring contains 1 or 2 oxygen atoms as ring atoms, and a ring carbon atom connected to the oxygen atom in the ring is not directly replaced by fluorine; and a compound B including a saturated five-membered ring or six-membered ring that contains 1 or 2 oxygen atoms as ring atoms, where at least one ring carbon atom connected to the oxygen atom in the ring is directly replaced by at least one fluorine atom.

Abstract: Provided are an electrolyte, a battery, and a power-consuming device. The electrolyte is applicable to a lithium metal secondary battery. The electrolyte includes a lithium salt and a solvent. The solvent includes an epoxy compound substituted with a fluoroalkyl chain. Therefore, the use of the electrolyte including the epoxy compound substituted with the fluoroalkyl chain can improve cycle stability on both a positive electrode side and a negative electrode side of the battery, prolonging a cycle life of the battery.

Abstract: Provided are an electrolyte, a battery, and an electrical device, the electrolyte comprises a solvent and an electrolytic salt dissolved in the solvent, the solvent comprises a first solvent comprising an ether solvent, and the ether solvent has a molecular structure in which the ?-carbon atom directly bonded to an oxygen atom in an ether-oxygen bond function group does not have a hydrogen atom directly bonded to the ?-carbon atom.

Abstract: This application discloses a nonaqueous electrolyte solution, a secondary battery containing the nonaqueous electrolyte solution, and an electrical device. The nonaqueous electrolyte solution includes: a compound A including a saturated five-membered ring or six-membered ring and at least one fluorine-containing substituent, where the ring contains 1 or 2 oxygen atoms as ring atoms, and a ring carbon atom connected to the oxygen atom in the ring is not directly replaced by fluorine; and a compound B including a saturated five-membered ring or six-membered ring that contains 1 or 2 oxygen atoms as ring atoms, where at least one ring carbon atom connected to the oxygen atom in the ring is directly replaced by at least one fluorine atom.

Abstract: An electrolyte includes a solvent and a prelithiation additive, where the prelithiation additive is selected from at least one of the following: lithium salt with oxalate, lithium oxide, and lithium peroxide, and the solvent includes at least one compound of formula (I). R1 is C1-6 fluoroalkyl; R2 is a hydrogen atom, C1-6 alkyl, or C1-6 fluoroalkyl; and n represents 1 or 2.

Abstract: An electrolyte includes a solvent, where the solvent includes at least one cyclic ether of formula (I) and at least one linear ether of formula (II).