A kind of tungsten oxide nanowire winding composite material, preparation method and application

A technology of tungsten oxide nanowires and winding composite materials, which is applied in the field of composite materials, can solve problems such as low conductivity and poor cycle stability of electrodes, and achieve high yield, obvious electrochemical performance, and excellent charge and discharge performance.
CN105355875BActive Publication Date: 2017-03-29合肥龙智机电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
合肥龙智机电科技有限公司
Publication Date
2017-03-29

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Abstract

The invention discloses a tungsten oxide nanowire wound composite material, a preparation method and application thereof in lithium ion batteries. A tungsten oxide nanowire is wound on the surface of a modified active substance surface to serve as an external expansion inhibition material, and then the outer surface is coated with a carbon layer to serve as a conducting layer to obtain the high performance tungsten oxide nanowire wound composite material. The tungsten oxide nanowire wound composite material prepared by the method provided by the invention can be used as a lithium ion battery cathode material. The process involved in the invention has the advantages of simple step, good repeatability, high yield, low cost, and good large-scale application potential. The composite material active material surface is coated and wound with a tungsten oxide nanowire and the nanowire is coated with a carbon layer, and the structure can effectively restrain the volume effect of nano materials and can significantly improve the electrochemical properties of the active substance. The tungsten oxide nanowire wound composite material can be applied to preparation of lithium ion electrodes, and has good cyclic stability and excellent charge and discharge performance.
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Description

technical field

[0001] The invention relates to the technical field of composite materials, in particular to a tungsten oxide nanowire winding composite material, a preparation method and an application in lithium ion batteries. Background technique

[0002] Lithium-ion batteries have the advantages of high open-circuit voltage, high energy density, long service life, no memory effect, less pollution, and low self-discharge rate. Its overall performance is superior to other traditional secondary batteries, and it is unanimously considered as a variety of portable batteries. The most ideal power supply for electronic equipment and electric vehicles. Although graphite, the negative electrode material of traditional lithium-ion batteries, has good cycle stability and high cost performance, due to its low charge-discharge specific capacity and no advantage in volume specific capacity, it is difficult to meet the high requirements of power systems, especially electric vehicles an...

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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