Method for preparing carbon nanostructure comprising molybdenum disulfide, lithium secondary battery cathode comprising carbon nanostructure comprising molybdenum disulfide, prepared thereby, and lithium secondary battery comprising same

A carbon nanostructure, lithium secondary battery technology, applied in secondary batteries, nanocarbons, molybdenum sulfide, etc., can solve problems such as complex methods, and achieve the effects of improving stability, suppressing side reactions, and increasing specific surface area
CN112088451AActive Publication Date: 2020-12-15LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Publication Date
2020-12-15

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Abstract

The present invention relates to a method for preparing a carbon nanostructure comprising molybdenum disulfide and, more specifically, provides a method for preparing a carbon nanostructure having molybdenum disulfide located on the surface thereof, by melt-diffusing and heat treating a mixture of a molybdenum precursor, a carbon nanostructure and sulfur. In addition, the present invention relatesto: a lithium secondary battery cathode comprising, as an additive, a carbon nanostructure comprising molybdenum disulfide; and a lithium secondary battery comprising same, and in the lithium secondary battery comprising the cathode in which the carbon nanostructure comprising molybdenum disulfide is applied, the carbon nanostructure comprising molybdenum disulfide adsorbs lithium polysulfide (LiPS) to be generated during charging / discharging of the lithium secondary battery, thereby increasing the charging / discharging efficiency of a battery and improving lifespan characteristics.
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Description

technical field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0102690 filed on August 30, 2018 and Korean Patent Application No. 10-2018-0102699 filed on August 30, 2018, said Korean The entire content of the patent application is incorporated herein by reference.

[0002] The present invention relates to a method for preparing a carbon nanostructure containing molybdenum disulfide that can be used as a positive electrode additive for a lithium secondary battery, and a lithium secondary battery containing the carbon nanostructure containing molybdenum disulfide prepared therefrom as a positive electrode additive A positive electrode and a lithium secondary battery having improved discharge characteristics having the same. Background technique

[0003] Since the 1990s, secondary batteries, which are power storage devices capable of continuous charging and discharging, have become important electronic components of porta...

Claims

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