A kind of hollow titanium oxide composite material, preparation method and application

A composite material and titanium oxide technology, applied in the field of composite materials, can solve problems such as electrode deformation and poor cycle stability, and achieve the effects of improved electrochemical performance, excellent charge and discharge performance, and simple process steps
CN105406041BActive Publication Date: 2017-09-01江苏久荣智能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
江苏久荣智能科技有限公司
Publication Date
2017-09-01

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Abstract

The invention discloses a hollow titanium oxide composite material, and a preparation method and application thereof in a lithium ion battery. The surface of an active substance is coated with a phenolic resin layer serving as a sacrifice template and then coated with a porous titanium oxide material, and the active substance coated hollow titanium oxide composite material containing rich oxygen vacancies is obtained by template removing and CaH2 treatment. The hollow titanium oxide composite material prepared according to the method can be used as a negative electrode material of the lithium ion battery. The hollow titanium oxide composite material, the preparation method and the application thereof, disclosed by the invention, have the advantages of simplicity in process step, short reaction time, high repeatability, high yield and low cost, and have the favorable large-scale application potential; with a hollow structure of the hollow titanium oxide composite material and the existing of a titanium oxide coating layer containing the rich oxygen vacancies, the electrochemical performance of the active substance can be obviously improved; and when used for preparing a lithium ion electrode, the hollow titanium oxide composite material has favorable cycle stability and excellent charging-discharging performance.
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Description

technical field

[0001] The invention relates to the technical field of composite materials, in particular to a high-performance hollow titanium oxide 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 vehi...

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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