Preparation method and application of a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing

A technology of sodium ion battery and nanosheet array is applied in the field of preparation of copper selenide nanosheet array for sodium ion battery, which can solve the problems of unsuitability for large-scale production, high production cost, high energy consumption equipment and the like, and achieves easy industrialization The effect of mass production, low cost and short reaction time
CN110371936BActive Publication Date: 2021-04-27ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Publication Date
2021-04-27

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Abstract

The invention provides a preparation method and application of a copper selenide nanosheet array for a sodium ion battery with adjustable interlayer spacing. The copper selenide nanosheet array is made of high-purity copper foil, a selenium source, sodium hydroxide, A strong reducing agent and an intercalation agent are used as raw materials, water is used as a solvent, and a reaction is performed at 20-80° C. for 0.5-4 h to obtain a copper selenide nanosheet array for sodium-ion batteries with adjustable layer spacing. The prominent feature of the present invention is that the distance between copper selenide layers can be regulated at a lower temperature, and the preparation method of the material is simple, the energy consumption is low, and it is easy to industrialized large-scale production; Controllable appearance and high specific surface area. When the material is used as an anode material for a sodium ion battery, it exhibits the advantages of high specific capacity, good rate performance and superior cycle performance. Therefore, the material is expected to be widely used in sodium ion batteries and other alkali metal ion batteries, thermoelectric materials and other fields.
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Description

technical field

[0001] The invention relates to the field of preparation of negative electrode materials for sodium ion batteries, in particular to a preparation method and application of copper selenide nanosheet arrays for sodium ion batteries with adjustable layer spacing. Background technique

[0002] Energy and the environment are two major issues that must be addressed for human survival and social development today. With the depletion of fossil resources such as coal and petroleum and the deterioration of the environment, the development of renewable energy such as solar energy, wind energy, and water energy has become a global trend. With a large amount of renewable energy and distributed energy connected to the grid, in order to overcome the irregular and intermittent output characteristics of wind or solar power, energy storage batteries are widely used in power generation, transmission and distribution, and power consumption.

[0003] Although lithium-ion batterie...

Claims

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