Vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material and preparation method thereof

A composite technology of vanadium pentoxide and graphene, applied in the direction of coating, etc., can solve problems such as poor cycle stability, narrow optical modulation range, low electronic conductivity, etc., and achieve poor conductivity, wide application prospects, preparation The effect of simple method

Inactive Publication Date: 2017-01-11
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor cycle stability, low electronic conductivity, and narrow optical modulation range of vanadium pentoxide, its wide application as an ion storage layer and electrochromic layer is limited.

Method used

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  • Vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material and preparation method thereof
  • Vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material and preparation method thereof
  • Vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Immerse the ITO conductive glass in NaOH / H sequentially 2 o 2 Mixed solution (NaOH, H 2 o 2 The volume ratio is 1:1~2), acetone, absolute ethanol, and deionized water, and ultrasonically clean them in an ultrasonic cleaner for 20 minutes, and finally soak the ITO conductive glass substrate in absolute ethanol for later use. Take out and dry to obtain a cleaned and dried ITO conductive glass substrate;

[0031] 2) Press: the molar ratio of vanadium pentoxide in vanadium pentoxide sol to molybdenum trioxide in molybdenum trioxide sol is 1:0.015, the mass ratio of vanadium pentoxide and graphene in vanadium pentoxide sol For 1:0.04, select vanadium pentoxide sol, molybdenum trioxide sol and graphene raw materials;

[0032] Slowly add the molybdenum trioxide sol dropwise into the vigorously stirred vanadium pentoxide sol, continue stirring for 30 minutes at room temperature, seal and let it stand for 3 days, then add graphene to it, and ultrasonically disperse it throu...

Embodiment 2

[0040] 1) Immerse the ITO conductive glass in NaOH / H sequentially 2 o 2 Mixed solution (NaOH, H 2 o 2 The volume ratio is 1:1~2), acetone, absolute ethanol, and deionized water, and ultrasonically clean them in an ultrasonic cleaner for 30 minutes, and finally soak the ITO conductive glass substrate in absolute ethanol for later use. Take out and dry to obtain a cleaned and dried ITO conductive glass substrate;

[0041] 2) Press: the molar ratio of vanadium pentoxide in vanadium pentoxide sol to molybdenum trioxide in molybdenum trioxide sol is 1:0.015, the mass ratio of vanadium pentoxide and graphene in vanadium pentoxide sol 1:0.03, select vanadium pentoxide sol, molybdenum trioxide sol and graphene raw materials;

[0042] Slowly add the molybdenum trioxide sol dropwise into the vigorously stirred vanadium pentoxide sol, continue stirring for 30 minutes at room temperature, seal and let it stand for 3 days, then add graphene to it, and ultrasonically disperse it through...

Embodiment 3

[0046] 1) Immerse the ITO conductive glass in NaOH / H sequentially 2 o 2 Mixed solution (NaOH, H 2 o 2 The volume ratio is 1:1~2), acetone, absolute ethanol, and deionized water, and ultrasonically clean them in an ultrasonic cleaner for 30 minutes, and finally soak the ITO conductive glass substrate in absolute ethanol for later use. Take out and dry to obtain a cleaned and dried ITO conductive glass substrate;

[0047] 2) Press: the molar ratio of vanadium pentoxide in vanadium pentoxide sol to molybdenum trioxide in molybdenum trioxide sol is 1:0.015, the mass ratio of vanadium pentoxide and graphene in vanadium pentoxide sol 1:0.05, select vanadium pentoxide sol, molybdenum trioxide sol and graphene raw materials;

[0048] Slowly add the molybdenum trioxide sol dropwise into the vigorously stirred vanadium pentoxide sol, continue stirring for 30 minutes at room temperature, seal and let it stand for 3 days, then add graphene to it, and ultrasonically disperse it through...

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Abstract

The invention belongs to the field of electrochromic films and particularly relates to a vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material and a preparation method thereof. The vanadium pentoxide/molybdenum trioxide/graphene composite electrochromic film material is characterized by being prepared by raw materials comprising vanadium pentoxide sol, molybdenum trioxide sol and graphene. The mole ratio of the vanadium pentoxide in the vanadium pentoxide sol to the molybdenum trioxide in the molybdenum trioxide sol is 1:(0.01-0.02). The mass ratio of the vanadium pentoxide in the vanadium pentoxide sol to the graphene is 1:0.03-0.05. The film material is good in electrochemical performance and electrochromic performance.

Description

technical field [0001] The invention belongs to the field of electrochromic thin films, in particular to a vanadium pentoxide / molybdenum trioxide / graphene composite electrochromic thin film material and a preparation method thereof. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties of materials (reflectivity, transmittance, absorption rate, etc.) undergo stable and reversible color changes under the action of an external electric field. Materials with electrochromic properties are called electrochromic materials. At present, electrochromic materials are considered to be one of the most promising smart materials, and are widely used in smart windows, variable reflection devices, display screens, and variable emissivity thermal control devices. [0003] As an important inorganic electrochromic material, transition metal oxides are widely used in electrochromic devices, such as tungsten trioxide (WO 3 ), molybdenum trioxide (Mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3411C03C2217/70C03C2217/948C03C2218/111
Inventor 朱泉峣马旭路山陈雨晴雪钟丹万方超何欢胡明尧
Owner WUHAN UNIV OF TECH
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