Lithium sulphur battery anode material and preparation method thereof

A cathode material, a technology for lithium-sulfur batteries, applied in battery electrodes, secondary batteries, nanotechnology for materials and surface science, etc. It is not easy to scale production and other problems, to achieve the effect of speeding up diffusion, buffering volume expansion, and simple steps
CN108232135AInactive Publication Date: 2018-06-29襄阳华虹高科新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
襄阳华虹高科新材料有限公司
Publication Date
2018-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a lithium sulphur battery anode material and a preparation method thereof. The lithium sulphur battery anode material is a reduction oxidized graphene aerogel nested sulphur nano particle composite material with a three-dimensional net-shaped structure. The preparation method of the lithium sulphur battery anode material comprises the steps that, gel is formed by online reducing a oxidized graphene gel and sulphur gel mixture, the gel is frozen and dried, and the reduction oxidized graphene aerogel nested sulphur nano particle composite material with the three-dimensional net-shaped structure is obtained. The preparation method specifically comprises the steps that oxidized graphene serves as an initial raw material, mixed gel of oxidized graphene and sulphur is prepared, reduction oxidized graphene gel is prepared by adopting an online reduction method at the room temperature to wrap the sulphur nano particle composite material, the internally wrapped solventis removed through freeze drying, and the reduction oxidized graphene aerogel nested sulphur nano particle composite material is obtained. The lithium suplhur battery anode material can effectively prevent dissolution and inhibition shuttle effects of polysulfide, and can enhance the charging and discharging stability of the lithium sulphur battery.
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Description

technical field

[0001] The invention belongs to the technical field of new energy, and relates to a lithium-sulfur battery positive electrode material, in particular to a reduced graphene oxide airgel-embedded lithium-sulfur battery positive electrode material and a preparation method thereof. Background technique

[0002] With the rapid development of new energy technologies, especially with the potential market demand in the field of intelligent communication and electric vehicles, it is imminent to develop electrochemical energy storage systems with low cost, high energy density, long life and environmental friendliness. With the existing lithium-ion battery technology, it is difficult for the current commercialized lithium-ion battery to break through 300 Wh / kg, which cannot meet the needs of the new energy industry for high-performance batteries.

[0003] In the new electrochemical energy storage system, the theoretical specific energy of the lithium-sulfur battery with...

Claims

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