Abstract: An additive for a battery electrolyte, including at least one of compounds represented by structural formulae in the present application text. The additive for a battery electrolyte provided in the present application can form low-impedance protective films on electrode surfaces, suppress side reactions between the electrodes and the electrolyte, reduce interface impedances, consider both high and low temperature performances, and improve an overall output performance of the lithium ion battery.

Abstract: Disclosed is a safe cylindrical battery, including a battery housing, wherein a core assembly is arranged in the battery housing, and the core assembly includes an electrode sheet, a compact full electrode lug, and a channel full electrode lug; the compact full electrode lug is vertically arranged on one end of the electrode sheet; the channel full electrode lug is parallelly arranged on the other end of the electrode sheet; the electrode sheet, the compact full electrode lug, and the channel full electrode lug are of an integral structure; the electrode sheet, the compact full electrode lug, and channel full electrode lug are wound to form a helical structure; and an explosion-proof line is engraved on one end of the battery housing corresponding to the channel full electrode lug.

Abstract: An additive for battery electrolyte, the additive at least including a structure represented by formula I or formula II as shown below, in formula I, R1 and R2 are independently selected from silicon-containing groups, and X is selected from organic groups with carbon atoms of 2 to 20; and in formula II, R1 and R2 are independently selected from silicon-containing groups, and X1 and X2 are independently selected from organic groups with carbon atoms of 2 to 20.

Abstract: An additive for a battery electrolyte, including at least one of compounds represented by structural formulae in the present application text. The additive for a battery electrolyte provided in the present application can form low-impedance protective films on electrode surfaces, suppress side reactions between the electrodes and the electrolyte, reduce interface impedances, consider both high and low temperature performances, and improve an overall output performance of the lithium ion battery.

Abstract: An additive for battery electrolyte, the additive at least including a structure represented by formula I or formula II as shown below, in formula I, R1 and R2 are independently selected from silicon-containing groups, and X is selected from organic groups with carbon atoms of 2 to 20; and in formula II, R1 and R2 are independently selected from silicon-containing groups, and X1 and X2 are independently selected from organic groups with carbon atoms of 2 to 20.

Abstract: A non-aqueous organic electrolyte additive is formulated by Formula (I), where R is halogen or R is one of: a C1-C10 alkyl group, a C1-C10 alkene group, a C1-C10 alkyne group, a C1-C10 alkoxy group, a halogen-containing C1-C10 alkyl group, a halogen-containing C1-C10 alkene group, a halogen-containing C1-C10 alkyne group and a halogen-containing C1-C10 alkoxy group. The non-aqueous organic electrolyte additive is oxidized and decomposed before an organic solvent in a high-voltage lithium-ion secondary battery, thereby forming a protection film that facilitates conduction of Li+ on a surface of an anode active material, increasing cyclic performance of a lithium-ion secondary battery at a high voltage, and achieving good stability. Embodiments of the present application further provide a method for preparing a non-aqueous organic electrolyte additive, a non-aqueous organic electrolyte containing the non-aqueous organic electrolyte additive, and a lithium-ion secondary battery having a high energy density.