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Secondary battery preventing dendrite growth

A secondary battery and branching technology, applied in the field of secondary battery and its structure, can solve the problems of increased battery internal resistance, reduced charging/discharging efficiency, concentration, etc., to achieve the effect of preventing short circuit and improving safety

Inactive Publication Date: 2019-05-03
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Meanwhile, during oxidation and reduction, electron density may concentrate on the rough surface of the anode; after repeated charge and discharge several times, as lithium crystals form, inhomogeneous needle-like dendrites may grow on the surface of the anode
[0005] When dendrites are generated during the use of a secondary battery, the internal resistance of the battery increases, so the charge / discharge efficiency decreases

Method used

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  • Secondary battery preventing dendrite growth
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Embodiment Construction

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that when terms such as "comprising", "comprising", "having" are used in this specification, it indicates that the features, regions, values, steps, operations, elements and / or components exist, but does not exclude the existence or One or more other features, regions, values, steps, operations, elements, components and / or combinations thereof are added.

[0030] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger automobiles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, Watercraft including boats, ships, aircraft, etc.,...

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Abstract

The present invention provides a secondary battery that includes a metal ion receptor, which can absorb metal dendrites generated on the surface of a cathode while the battery is used, in a battery cell, whereby it is possible to improve safety by suppressing growth of dendrites and preventing a short due to a dendrite by making metal dendrites be absorbed in the metal ion receptor before the dendrites growing on the surface of the cathode reach the surface of an anode.

Description

technical field [0001] The present invention relates to a secondary battery and its structure capable of preventing dendrite growth and preventing short circuit due to dendrite growth on the surface of an electrode. Background technique [0002] A secondary battery such as a lithium secondary battery stores electrical energy in chemical energy and supplies electricity. [0003] Lithium secondary batteries typically include an anode, a cathode, an electrolyte, and a separator that provide a path for lithium ions to move between the anode and cathode, whereby oxidation and reduction to produce electricity. [0004] Meanwhile, during oxidation and reduction, electron density may concentrate on the rough surface of the anode; after repeated charge and discharge several times, as lithium crystals form, inhomogeneous needle-like dendrites may grow on the surface of the anode. [0005] When dendrites are generated during use of the secondary battery, the internal resistance of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16H01M10/052H01M10/42H01M50/414H01M50/489H01M50/491H01M50/497
CPCH01M10/054H01M10/058H01M10/4235H01M10/48H01M2220/20H01M10/052Y02E60/10H01M50/446Y02P70/50H01M50/491H01M50/414H01M50/489H01M50/497H01M4/13H01M50/46H01M2200/00H01M10/42H01M10/0562H01M2300/0025H01M2300/0071H01M10/0565H01M4/661
Inventor 朴相睦李尹圣吴承旼高琦锡吕悦梅
Owner HYUNDAI MOTOR CO LTD
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