Preparation method of hydrogen tungsten bronze/ultra-microporous flexible carbon cloth, and products and applications

A hydrogen tungsten bronze and ultra-microporous technology is applied in the preparation of hydrogen tungsten bronze/ultra-microporous flexible carbon cloth, which can solve the problems of large difference in theoretical capacitance, limited application, poor conductivity of metal oxides, etc. The effect of increasing active specific surface area and low cost

Inactive Publication Date: 2018-06-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor conductivity of metal oxides usually makes their capacitance far from the theoretical capacitance, thus limiting their application in capacitor energy storage.

Method used

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  • Preparation method of hydrogen tungsten bronze/ultra-microporous flexible carbon cloth, and products and applications
  • Preparation method of hydrogen tungsten bronze/ultra-microporous flexible carbon cloth, and products and applications
  • Preparation method of hydrogen tungsten bronze/ultra-microporous flexible carbon cloth, and products and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Preparation of ultra-microporous flexible carbon cloth

[0042] Commercial carbon cloth (Shanghai Hesen Carbon Cloth Co., Ltd., HCCP330) was washed with deionized water, calcined in an atmosphere with a volume ratio of nitrogen to oxygen of 100:2, and maintained at 1000 °C for 2 hours to obtain ultra-microporous flexible carbon cloth.

Embodiment 2

[0043] Embodiment 2: the preparation of hydrogen tungsten bronze / ultramicroporous flexible carbon cloth

[0044] Wash the ultra-microporous flexible carbon cloth prepared in Example 1 with alcohol and water, configure a 0.1M ammonium metatungstate solution, impregnate the ultra-microporous flexible carbon cloth in it, and ultrasonicate it for a reaction time of 2 hours. Calcined in nitrogen at 800°C and stayed for 4 hours to obtain H X WO 3 / Ultra-microporous flexible carbon cloth.

[0045] SEM of the resulting product see figure 1 , showing that H X WO 3 With the morphology of nanowires, the scanning electron microscope under high magnification can see figure 2 , indicating that the nanowires grow uniformly around the carbon fibers.

[0046] See HRTEM image 3 , indicating that the nanowires have surface and internal oxygen vacancies.

[0047] XRD characterization see Figure 4 , the card number is pdf: 42-1260, and the description is H 0.23 WO 3 , H 0.23 WO 3Th...

Embodiment 3

[0050] Example 3: Preparation of hydrogen tungsten bronze / ultramicroporous flexible carbon cloth

[0051] Wash the ultra-microporous flexible carbon cloth prepared in Example 1 with alcohol, wash it with water, configure a 5M ammonium metatungstate solution, impregnate the ultra-microporous flexible carbon cloth in it, and ultrasonicate the reaction time for 2 hours. Calcined in nitrogen at 700°C and stayed for 2 hours to obtain H X WO 3 / Ultra-microporous flexible carbon cloth.

[0052] The SEM morphology of the resulting product is as Figure 8 Shown, H X WO 3 is the shape of the nanowire, H X WO 3 The load is uniform, and the load can be as high as 8mg / cm 2 .

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Abstract

The invention relates to a preparation method of hydrogen tungsten bronze / ultra-microporous flexible carbon cloth, comprising the following steps: 1) impregnating an ultra-microporous flexible carboncloth into a 0.1-10 M ammonium metatungstate solution, performing ultrasonical treatment and then drying to obtain an ultra-microporous flexible carbon cloth loaded with ammonium metatungstate; 2) calcining the ultra-microporous flexible carbon cloth loaded with ammonium metatungstate obtained in step 1) to obtain a hydrogen tungsten bronze / ultra-microporous flexible carbon cloth having surface and internal oxygen vacancies. The invention also relates to products and applications prepared by the preparation method. The method makes the hydrogen tungsten bronze form a uniform nanowire morphology on the ultra-microporous flexible carbon cloth, and has high surface and internal oxygen vacancies, and the surface oxygen vacancy is significantly higher than the internal oxygen vacancy.

Description

technical field [0001] The invention relates to the field of preparation of flexible carbon cloth, in particular to a preparation method, product and application of hydrogen tungsten bronze / ultra-microporous flexible carbon cloth. Background technique [0002] At present, oil resources are becoming increasingly scarce, and at the same time, exhaust emissions from oil-burning internal combustion engines are increasingly polluting the environment (especially in large and medium-sized cities), so people are studying various energy storage and conversion devices. [0003] Lithium batteries, traditional capacitors and supercapacitors have been rapidly developed as new energy storage devices. Among them, supercapacitors have been widely studied due to their higher power density and cycle stability than lithium batteries, and greater energy density than conventional capacitors. Generally, supercapacitors can be divided into electric double layer capacitors and pseudocapacitors. E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/32H01G11/86
CPCY02E60/13H01G11/24H01G11/30H01G11/32H01G11/86
Inventor 王勇王海燕
Owner ZHEJIANG UNIV
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