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Preparation method of rutile@anatase titanium dioxide core-shell structure nanorod

A titanium dioxide, core-shell structure technology, applied in the directions of nanotechnology, nanotechnology, structural parts, etc., can solve the problem of not preparing rutile nanorods, and achieve the effect of convenient large-scale application, low cost and good reproducibility

Active Publication Date: 2017-02-08
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are no related patent reports on the preparation of rutile@anatase titania core-shell nanorods

Method used

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  • Preparation method of rutile@anatase titanium dioxide core-shell structure nanorod
  • Preparation method of rutile@anatase titanium dioxide core-shell structure nanorod
  • Preparation method of rutile@anatase titanium dioxide core-shell structure nanorod

Examples

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Embodiment 1

[0017] Example 1 Preparation of rutile@anatase titanium dioxide core-shell nanorods

[0018] Dissolve 0.5-3 ml of n-butyl titanate in a mixed solution of sodium lactate and water, wherein the volume ratio of sodium lactate and water is 1 / 5, then add 0.05-1 g of terephthalic acid, stir for 5 minutes, and transfer to Place in a 50ml reaction kettle in an oven at 100-200 degrees, react for 12-36 hours, wash the obtained product several times with water, and dry to obtain rutile@anatase titanium dioxide core-shell nanorods.

[0019] Depend on figure 1 , 2 , 3, 4, it can be seen that the material prepared by the present invention is indeed rutile@anatase titania core-shell structure nanorods.

Embodiment 2

[0020] Example 2 Application of rutile@anatase titania core-shell structure nanorods in lithium-ion batteries

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Abstract

The invention provides a preparation method of a rutile@anatase titanium dioxide core-shell structure nanorod. The preparation method comprises the following steps of adopting a simple one-step hydrothermal treatment method for dissolving tetrabutyl titanate into a mixed solution of sodium lactate and water; adding terephthalic acid; heating and reacting to obtain the rutile@anatase titanium dioxide core-shell structure nanorod. The method is simple in process, low in cost, low in energy consumption, good in reproducibility, excellent in performance, and convenient to large-scale application. Alithium battery adopting the prepared rutile@anatase titanium dioxide core-shell structure nanorod as a lithium battery cathode has higher specific capacity and cycling stability, and has the capacity being stabilized in 84.9mAh / g after circulating charging and discharging for 5,000 circles when the current density is 3.36A / g.

Description

technical field [0001] The invention belongs to the field of lithium-ion batteries, and in particular relates to the preparation of a rutile@anatase titanium dioxide core-shell nanorod and its application in lithium-ion batteries. Background technique [0002] Since the successful development of lithium-ion batteries in the 1990s, lithium-ion batteries have been widely used, but it has always been a scientist's goal to obtain anode materials for lithium-ion batteries with good cycle performance, high specific capacity, and high-current charge-discharge performance. research focus. The commonly used negative electrode materials are metal lithium, carbon materials, silicon materials, TiO 2 and Li 4 Ti 5 o 12 Wait. Metal lithium and carbon materials have disadvantages such as potential safety hazards and poor rate performance. During the charge and discharge process of silicon material, there is a large volume expansion. Li 4 Ti 5 o 12 Difficult to synthesize. TiO 2...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/483H01M10/0525Y02E60/10
Inventor 魏明灯柳宇彬王建标蓝通斌
Owner FUZHOU UNIV
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