Carbon negative electrode material for sodium ion battery and preparation method of carbon negative electrode material

A carbon negative electrode material and sodium-ion battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as low degree of graphitization, weak sodium storage capacity, and mismatched layer spacing, achieving good repeatability and low cost. Inexpensive, well-sourced effects
CN106935861AActive Publication Date: 2017-07-07CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2017-07-07

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Abstract

The invention discloses a preparation method of a carbon negative electrode material for a sodium ion battery. The preparation method comprises the steps of performing spray pyrolysis on solution of a carbon-containing nitrogen source, an activating agent, a surfactant and a nickel salt, and washing and drying the obtained product to prepare the carbon negative electrode material. Moreover, the invention also discloses the carbon negative electrode material obtained by employing the preparation method. The composite structure carbon negative electrode material prepared by the method is a carbon sphere with certain graphitized degree and rich pores, and the carbon negative electrode material has low potential, high specific capacity and excellent cycle performance when used as a negative electrode material of the sodium ion battery; and moreover, the preparation method is simple and is low in cost and has wide industrial application prospect.
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Description

technical field

[0001] The invention relates to a negative electrode material of a sodium ion battery and a preparation method thereof, in particular to a composite structure carbon negative electrode material for a sodium ion battery and a preparation method thereof, belonging to the field of sodium ion batteries. Background technique

[0002] With the rapid development of lithium-ion batteries, especially the large-scale application of batteries in electric vehicles and grid energy storage in the future, the challenges brought about by the shortage of lithium resources, uneven distribution and rising prices in the future are increasingly recognized by people. Therefore, researchers focus on sodium-ion batteries. Due to the similarity between the properties of sodium and lithium and the uniformity and abundance of sodium resource distribution, sodium-ion batteries are considered as potential substitutes for lithium-ion batteries.

[0003] In recent years, research efforts ...

Claims

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