Electrolyte and lithium secondary battery comprising same

A lithium secondary battery and electrolyte technology, applied in non-aqueous electrolyte batteries, secondary batteries, lithium batteries, etc., can solve problems such as collapse, reduced battery life, and reduced battery charging/discharging efficiency, and achieve the effect of preventing growth
CN111492525AActive Publication Date: 2020-08-04LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Publication Date
2020-08-04

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Abstract

The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery comprising same. More specifically, the present invention relates to an electrolyte fora lithium secondary battery which maintains a uniform concentration of lithium ions on the surface of a lithium metal anode even if the electrolyte contains only a small amount of an additive comprising a functional group forming a bond with a lithium metal and a polyethylene oxide chain interacting with lithium ions, such that growth of lithium dendrites can be suppressed.
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Description

technical field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0054612 filed on May 14, 2018 and Korean Patent Application No. 10-2019-0054060 filed on May 9, 2019, and The entire contents disclosed in the references of these Korean patent applications are hereby incorporated as a part of this specification.

[0002] The present invention relates to an electrolyte capable of suppressing growth of lithium dendrites and improving performance of the battery in a lithium secondary battery including lithium metal as a negative electrode, and a lithium secondary battery including the same. Background technique

[0003] With the rapid development of electrical, electronic, communication and computer industries, the demand for secondary batteries with high performance and high stability is rapidly increasing in recent years. In particular, in accordance with the trends of weight reduction, thinning, miniaturization, and portabi...

Claims

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