Carbon coated titanium manganese sodium phosphate composite material, preparation method and application thereof in sodium-ion battery

A composite material and carbon coating technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as environmental safety side effects, environmental and human harm, and less raw material sources, to improve crystal integrity and improve coating. Uniformity, the effect of improving electrochemical activity
CN106981641AActive Publication Date: 2017-07-25湖南钠邦新能源有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南钠邦新能源有限公司
Publication Date
2017-07-25

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Abstract

The invention discloses a Na3MnTi(PO4)3 / C composite material, a preparation method and an application thereof in a sodium-ion battery. The composite material is composed of carbon coated Na3MnTi(PO4)3 particles. The preparation method comprises the following steps: utilizing an organic matter as a reducing agent and a carbon source, taking low-cost manganese source and titanium source as raw materials and adopting a solid phase method for synthesizing a carbon coated Na3MnTi(PO4)3 composite anode material with an excellent performance. The preparation method is simple and practicable, the condition is mild and the yield is high. When the prepared composite material is used as an anode material of the sodium-ion battery, the anode material shows high energy density, high working voltage, excellent circulatory stability and excellent rate capability.
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Description

technical field

[0001] The present invention relates to a kind of sodium ion cathode material, particularly to a kind of carbon-coated Na 3 MnTi(PO 4 ) 3 Formed composites and solid phase synthesis of Na 3 MnTi(PO 4 ) 3 / C method, and Na 3 MnTi(PO 4 ) 3 The application of / C as a sodium ion cathode material belongs to the field of sodium ion batteries. Background technique

[0002] As lithium-ion batteries have achieved rapid development in the field of 3C products and electric vehicles, and have shown good development prospects, due to the lack of metal lithium resources in the earth's crust, lithium-ion batteries are difficult to meet in the field of large-scale energy storage. For large-scale applications, its manufacturing cost will also show a rising trend with the shortage of lithium resources. Compared with lithium, sodium is abundant in the earth's crust and has a wider source, and sodium and lithium are in the same main group in the periodic table, so they ...

Claims

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