Composite mixed vanadium dioxide nano powder material and its preparation process

A technology of vanadium dioxide nanometer and powder materials, which is applied in the direction of vanadium oxide, etc., can solve the problems of adverse effects on the environment and the health of operators, complex process steps, and high power of the heating furnace, etc., and is beneficial to environmental protection and operators. health, less equipment investment, and small power requirements
CN1693211AInactive Publication Date: 2005-11-09SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2005-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for preparing the doped composite VO2 nanoparticles with low phase-change temp (25-30 deg.C) and improved physical propoerties includes such steps as preparing the metal element and non-metal element doped solid vanadium oxalate as precursor from V2O5 and oxalic acid, and vacuum thermodecomposing. Its molecular formula is V1-xMxO2-yZy, where x=0-0.08, y=0-0.1, M is metal element and Z is non-metal element.
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Description

technical field

[0001] The invention belongs to a vanadium dioxide nanometer powder material and a preparation method thereof, in particular to a composite doped vanadium dioxide nanometer powder material and a preparation method thereof. Background technique

[0002] VO 2 It is a typical phase-change compound, which undergoes a first-order phase transition at around 68°C. Along with the phase transition, the resistivity, magnetic susceptibility, optical refractive index, transmittance, and reflectance undergo a sudden change, and the phase transition process is reversible. Experiments have shown that doping can change VO 2 The phase transition temperature, expanding VO 2 field of application, therefore, for doped VO 2 The research on its preparation method has very important value.

[0003] The Chinese patent application with the application number 95196132.2 discloses a vanadium dioxide particle and its preparation method. The vanadium di...

Claims

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