One-dimensional manganese oxide/carbon coaxial hollow nanorod as well as preparation method and application of nanorod

A technology of manganese oxide and nanorods, applied in the field of nanomaterials and electrochemistry, to achieve good cycle stability, improve cycle stability, and good repeatability
CN104300136AActive Publication Date: 2015-01-21WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2015-01-21

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Abstract

The invention relates to a one-dimensional manganese oxide / carbon coaxial hollow nanorod and a preparation method of the nanorod. The length of the nanorod is 2-3 microns; the diameter of the nanorod is 100-200nm; the thickness of carbon is 25-35nm; the thickness of a hollow structure is 10-20nm. The nanorod is prepared by the method which comprises the following steps: (1) dispersing a manganese oxide / silicon dioxide / carbon compound nanorod in a 1.0-2.0mol / L sodium hydroxide solution, stirring and uniformly mixing the solution; (2) slowly stirring the mixed solution obtained by the step (1) for 18-24 hours under the condition with a constant-temperature water bath at 70-90 DEG C; and (3) repeatedly washing a product obtained by the step (2) with water and absolute ethyl alcohol until the pH value is 7, and drying to obtain the one-dimensional manganese oxide / carbon coaxial hollow nanorod. The one-dimensional manganese oxide / carbon coaxial hollow nanorod has the beneficial effects of high specific capacity, high rate capability and high cycling stability, and can be used as a potential application material of a lithium ion battery.
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Description

technical field

[0001] The invention belongs to the technical field of nanometer materials and electrochemistry, and specifically relates to a one-dimensional manganese oxide / carbon coaxial hollow nanorod and a preparation method thereof. The material can be used as a lithium ion battery negative electrode active material. Background technique

[0002] As a green energy source, lithium-ion batteries have been used in portable electronic devices and electric vehicles. Research on high-capacity, miniaturized, high-power, and low-cost lithium-ion batteries based on new nano-heterostructures is the key to lithium-ion batteries in the current low-carbon economic era. One of the frontiers and hotspots of research. Since manganese oxide has a higher theoretical capacity than the currently widely used graphite, its theoretical specific capacity is as high as 960mAh / g, and it is considered to be one of the most potential negative electrode materials for lithium-ion batteries. Althou...

Claims

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