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Flexible titanium nitride-polypyrrole nano-pillar array material and preparation method and application thereof

A polypyrrole nano- and nano-pillar array technology, which is applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as shedding and instability, and achieve the effect of preventing shedding, increasing surface area, and good conductivity.

Active Publication Date: 2018-09-14
XUZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The ultra-high conductivity of titanium nitride (4000-55500S·cm -1 ) and mechanical stability make it a very promising electrode material for supercapacitors, but titanium nitride nanomaterials are easy to fall off from the electrode surface and are unstable.
[0005] In summary, there are still many defects in the existing electrode materials for supercapacitors, which cannot well meet the needs of practical applications. Therefore, it is necessary to improve the electrode materials for supercapacitors.

Method used

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  • Flexible titanium nitride-polypyrrole nano-pillar array material and preparation method and application thereof
  • Flexible titanium nitride-polypyrrole nano-pillar array material and preparation method and application thereof
  • Flexible titanium nitride-polypyrrole nano-pillar array material and preparation method and application thereof

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Embodiment 1

[0068] This embodiment provides a method for preparing a flexible titanium nitride-polypyrrole nanocolumn array material, including the following steps:

[0069] S1. Using graphite paper as a base material, growing a titanium dioxide nanocolumn array material on its surface to obtain graphite paper loaded with a titanium dioxide nanocolumn array;

[0070] Said step S1 comprises the following steps:

[0071] S101. cutting the graphite paper into small pieces of 50 mm×20 mm×0.10 mm, then ultrasonically washing with acetone and water for 10 min, and then drying at 80° C. to obtain the pretreated graphite paper;

[0072] S102. Take 10 mL of tetrabutyl titanate in a 100 mL beaker, slowly add 50 mL of absolute ethanol while stirring, then add 0.1 mL of glacial acetic acid, and keep stirring at room temperature until the reaction solution is milky white to obtain a titanium dioxide sol;

[0073] S103. Immerse the pretreated graphite paper in the titanium dioxide sol for 5 minutes, t...

Embodiment 2

[0089] In this embodiment, scanning electron microscopy is used to study graphite paper loaded with titanium dioxide nanocolumn arrays, graphite paper loaded with titanium nitride nanocolumn arrays, graphite paper-polypyrrole materials, titanium dioxide-polypyrrole nanocolumn array materials, and flexible titanium nitride-polypyrrole materials. The morphology structure of the nanopillar array material was studied.

[0090] figure 1 It is the SEM image of the graphite paper loaded with titania nanocolumn array in the present invention. As shown in the figure, the titanium dioxide nanocolumns are in the shape of a quadrangular prism with a width of 200-350nm, and the cylinder surface is smooth and flat. This structure is conducive to the conversion of titanium dioxide to titanium nitride during the nitriding process and the transport of ions in the electrolyte to the electrode surface during the charge and discharge process. image 3 It is the SEM image of the graphite paper s...

Embodiment 3

[0092] In this embodiment, XRD spectrum and Raman spectrum are used to characterize the composition of the material. Figure 6 It is the XRD spectrogram of graphite paper loaded with titanium dioxide nanocolumn array and graphite paper loaded with titanium nitride nanocolumn array material in the present invention. The diffraction peaks at 27.6°, 36.2°, 41.4° and 54.5° in the spectrogram of the graphite paper loaded with titanium dioxide nanocolumn arrays correspond to hkl(110), hkl(101), hkl(111) and hkl of rutile phase titania, respectively (211) crystal plane; the diffraction peaks at 37.0°, 42.9° and 62.4° in the spectrum of GP / TiN-NRAs correspond to hkl(111), hkl(200) and hkl(220) of cubic titanium nitride, respectively The crystal plane, and the characteristic peaks of rutile phase titanium dioxide in the spectrum basically disappear completely. Therefore, the titanium dioxide nanocolumns on the surface of the graphite paper sample loaded with titanium dioxide nanocolum...

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Abstract

The invention relates to a preparation method and application of flexible titanium nitride-polypyrrole nano-pillar array material. The method comprises the following steps that S1. the graphite paperacts as the substrate material, and the titanium dioxide nano-pillar array material is grown on the surface of the graphite paper so that the graphite paper loaded with the titanium dioxide nano-pillar array is obtained; S2. nitriding of the graphite paper loaded with the titanium dioxide nano-pillar array is performed so as to obtain the graphite paper loaded with the titanium nitride nano-pillararray; S3. the polypyrrole is deposited on the graphite paper loaded with the titanium nitride nano-pillar array by using the normal pulse voltammetry so as to obtain the flexible titanium nitride-polypyrrole nano-pillar array material. According to the titanium nitride-polypyrrole nano-pillar array material prepared with the graphite paper acting as the substrate material, the titanium nitride nano-pillars have great conductivity and large specific surface, and the surface of each titanium nitride nano-pillar is completely wrapped by a layer of uniform polypyrrole so that the capacitive property of the material can be enhanced.

Description

technical field [0001] The invention relates to the technical field of new energy materials, in particular to a flexible titanium nitride-polypyrrole nanocolumn array material and its preparation method and application. Background technique [0002] With the depletion of non-renewable resources such as coal, oil, and natural gas, the development of new energy materials and energy storage devices is an important topic worldwide. Among them, the research on supercapacitors has been widely concerned, and has become a research hotspot of new energy storage devices. Supercapacitors, that is, electrochemical capacitors, have many advantages such as fast charging and discharging speed, high charging and discharging efficiency, high power density, long cycle life, high safety and low cost. They are used in electric vehicles, mobile communications, information technology, portable electronic devices And aerospace and other fields have broad application prospects. [0003] The elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/36H01G11/30H01G11/86
CPCH01G11/30H01G11/36H01G11/86Y02E60/13
Inventor 王永吴长宇徐凯李菁菁隋美蓉
Owner XUZHOU MEDICAL UNIV
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