Preparation method of manganese sulfide/graphene nano composite material, negative electrode of lithium ion battery and lithium ion battery

A nanocomposite material, lithium-ion battery technology, applied in battery electrodes, nanotechnology, nanotechnology and other directions, can solve problems such as poor cycle stability, achieve stable performance, improve performance, and enhance conductivity.
CN106159239AActive Publication Date: 2016-11-23ANHUI NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI NORMAL UNIV
Publication Date
2016-11-23

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Abstract

The invention discloses a preparation method of a manganese sulfide / graphene nano composite material, a negative electrode of a lithium ion battery and the lithium ion battery. The preparation method comprises the steps of a hydrothermal procedure and a compounding procedure. By virtue of the preparation method, in-situ growth of manganese sulfide is directly carried out on the surface of graphene; after washing and drying steps are carried out, the manganese sulfide / graphene nano composite material is obtained; the disadvantages such as poor stability caused by volume change are overcome through compounding of the manganese sulfide and three-dimensional reduced graphene oxide are overcome and the conductivity is enhanced, so that the properties of the lithium ion battery are improved; the material is applied to a negative electrode material of the lithium ion battery and has the advantages of good circulating stability, high specific energy density and the like.
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Description

technical field

[0001] The invention relates to the technical field of inorganic nanometer materials, in particular to a preparation method of a manganese sulfide / graphene nanocomposite material, a negative electrode of a lithium ion battery, and a lithium ion battery. Background technique

[0002] Lithium-ion batteries are widely used in portable electronic devices due to their high energy density, long cycle life and no memory effect. In recent years, the development of electric equipment has put forward higher requirements for the power density and energy density of lithium-ion batteries, and electrode materials are the decisive factors for the performance improvement of lithium-ion batteries.

[0003] The theoretical specific capacity of manganese sulfide is 616mAh / g, which has the advantages of low cost, high specific capacity and easy synthesis. However, as the negative electrode active material of lithium batteries, manganese sulfide has poor electrical conductivity ...

Claims

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