Method for regulating terminal voltage of cathode during overdischarge and cathode active material for lithium secondary battery

A cathode active material, lithium secondary battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of battery capacity decline, battery unusable, etc., to achieve the effect of excellent performance
CN100344018CActive Publication Date: 2007-10-17LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Publication Date
2007-10-17

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Abstract

Disclosed is a method for regulating terminal voltage of a cathode during overdischarge. Also disclosed is a lithium secondary battery, which is low in capacity loss after overdischarge, having excellent capacity restorability after overdischarge and shows an effect of preventing a battery from swelling at a high temperature.
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Description

technical field

[0001] The invention relates to a method for adjusting the termination voltage of the cathode during overdischarge. The present invention also relates to a lithium secondary battery which has low capacity loss after overdischarge, has excellent capacity recovery ability after overdischarge, and has a property of preventing battery expansion at high temperature. Background technique

[0002] In recent years, with the development of various technologies in the mobile communication industry and the information electronics industry, there has been an increasing demand for low-weight, high-capacity lithium secondary batteries. However, lithium secondary batteries may burn and explode due to excessive heat release during overcharging or short-circuiting. In addition, when the lithium secondary battery is over-discharged below its normal voltage range, its capacity will be significantly reduced, hindering subsequent applications.

[0003] For these reasons, safety...

Claims

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