Calcium vanadate mesoporous nanowire and preparation method and application thereof

A calcium vanadate mesoporous and nanowire technology, which is applied in the field of nanomaterials and electrochemistry, can solve the problems of unreported preparation methods, achieve good cycle stability, improve kinetic properties, and high rate performance
CN105680042AActive Publication Date: 2016-06-15WUHAN 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
2016-06-15

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Abstract

The invention relates to a calcium vanadate mesoporous nanowire material and a preparation method thereof. The material can be used as a sodium-ion battery anode active material. The calcium vanadate mesoporous nanowire is obtained in combination with post heat treatment by using a hydrothermal process, the molecular formula of calcium vanadate is CaV4O9, the diameter of the nanowire is 100-200 nm, the length of the nanowire is 5-10 microns, a large number of mesopores are uniformly formed in the surface of the nanowire, and the pore diameters of the mesopores are 20-50 nm. The calcium vanadate mesoporous nanowire material has the beneficial effects that the calcium vanadate mesoporous nanowire material has relatively high specific capacity, good cycling stability and extremely excellent rate capacity when being used as the sodium-ion battery anode active material, and is a potential high-performance sodium-ion battery anode material; and moreover, the preparation method is simple in technology, and the calcium vanadate mesoporous nanowire can be obtained through the simple hydrothermal process and subsequent heat treatment, so that the method is green and environmentally-friendly and relatively low in energy consumption.
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Description

technical field

[0001] The invention belongs to the technical field of nanomaterials and electrochemistry, and in particular relates to a calcium vanadate mesoporous nanowire and a preparation method thereof. The mesoporous nanowire can be used as a negative electrode active material of a sodium ion battery. Background technique

[0002] As the world's fossil energy is increasingly depleted, and CO 2 Due to the greenhouse effect and environmental pollution caused by the excessive emissions, the development of renewable new energy will become an inevitable trend in the future. The discontinuous and irregular characteristics of renewable new energy have brought certain challenges to its large-scale development and application. In order to overcome this problem, the development of large-scale energy storage system is very important. Large-scale energy storage systems can store discontinuous energy flows such as solar energy and wind energy first, and then achieve continuous o...

Claims

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