a cote 2 /mxene composite material and preparation method thereof

A technology of composite materials and preparation steps, which is applied in the direction of structural parts, electrical components, battery electrodes, etc., can solve the problems of inability to obtain rapid ion migration effect, electrode material crushing, and fast capacity decay, and achieve large transfer and ion adsorption area and Vacuum, prevention of agglomeration, and high production efficiency
CN112018349BActive Publication Date: 2022-04-08WUYI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUYI UNIV
Publication Date
2022-04-08

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Abstract

The invention discloses a CoTe 2 The preparation method of the / MXene composite material comprises the following steps: adding the MXene material to the dispersant to prepare a dispersion liquid with a concentration of 1-10mg / ml; adding the cobalt source and the reducing agent to the above dispersion liquid, stirring and dissolving, and obtaining a mixed liquid; the above mixed solution is heated, cooled, centrifuged, washed and dried to obtain the precursor Co(OH) 2 / MXene; the above precursor Co(OH) 2 / MXene and tellurium source are heated according to the molar ratio of 1:1~6, cooled to obtain the crude product; the above crude product is centrifuged at 5000-8000r / min for 5-10min, washed and dried to obtain CoTe 2 / MXene composites. CoTe prepared by the present invention 2 The / MXene composite material is applied to the negative electrode of potassium ion batteries. It has good cycle stability, high specific capacity and excellent rate performance, and has the advantages of low cost, abundant resources, and simple preparation methods. It is suitable for large-scale production of potassium ion batteries. with application.
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Description

technical field

[0001] The invention belongs to the technical field of new energy, and in particular relates to a CoTe 2 / MXene composite material and its preparation method. Background technique

[0002] Since the 21st century, with the increasing demand for energy in modern society, fossil energy has been continuously consumed and depleted, and environmental problems have become increasingly serious, seriously affecting the sustainable development of human society. Therefore, the research and development of new renewable clean energy has been become the focus of current research.

[0003] At present, as a secondary battery energy storage system, lithium-ion batteries have achieved great success in the fields of electric vehicles and portable electronic devices. The uneven distribution has led to rising prices of lithium-ion batteries, which limits their application in the field of energy storage. Therefore, developing a new type of secondary alkali metal battery has ext...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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