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Preparation method of porous SiC-coated PANI core/shell nanowire quasi array and application of porous SiC-coated PANI core/shell nanowire quasi array in supercapacitor

A technology of nanowires and arrays, applied in the field of energy manufacturing, to achieve good specific capacitance, high repeatability, and simple and controllable preparation methods

Pending Publication Date: 2022-05-10
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although considerable progress has been made in polyaniline materials so far, it remains a formidable challenge to design and fabricate advanced polyaniline-based composite electrode materials with smart nanostructures to improve overall performance.

Method used

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  • Preparation method of porous SiC-coated PANI core/shell nanowire quasi array and application of porous SiC-coated PANI core/shell nanowire quasi array in supercapacitor
  • Preparation method of porous SiC-coated PANI core/shell nanowire quasi array and application of porous SiC-coated PANI core/shell nanowire quasi array in supercapacitor
  • Preparation method of porous SiC-coated PANI core/shell nanowire quasi array and application of porous SiC-coated PANI core/shell nanowire quasi array in supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]The polysilazane is heated and solidified at 260°C first, and then ground into a fine powder in a ball mill; the carbon cloth is soaked in a cobalt nitrate ethanol solution with a concentration of 0.05mol / L to support the catalyst, taken out and dried. Mix polysilazane and melamine powders with a mass ratio of 3:1 and place them in a crucible covered with carbon cloth. Place the crucible in a high-temperature atmosphere sintering furnace. The temperature of the first stage is 1400°C, and then rises to the second stage temperature of 1550°C after 10 minutes, and then falls to the third stage temperature of 1300°C after 8 minutes, and then naturally cools to obtain a carbon cloth loaded with SiC nanowires. Disperse 0.005 mol of aniline monomer in 500 ml of hydrochloric acid solution with a concentration of 0.5 mol / L; then arrange the above-mentioned carbon in an electrolytic cell containing 15 ml of aniline acidic solution, and use the carbon cloth loaded with SiC nanowires...

Embodiment 2

[0047] Compared with Example 1, the difference is that the temperature in the second stage is 1570°C, and the scanning electron microscope image of the prepared material is as follows Image 6 Shown; and three-electrode test, the performance data are shown in Table 1. The prepared material was assembled into a symmetrical button supercapacitor for two-electrode performance test, and the performance data are shown in Table 2.

Embodiment 3

[0049] Compared with Example 1, the difference is that the AC mode of the pulse power supply is set, the duty cycle is 50%, the voltage is 0-1.2V, the frequency is 50Hz, and the time is 20min. After the deposition is completed, it is taken out and dried to obtain SiC@PANI core / Shell nanowire quasiarrays. The scanning electron microscope image of the prepared material is shown in Figure 7 Shown; and three-electrode test, the performance data are shown in Table 1. The prepared material was assembled into a symmetrical button supercapacitor for two-electrode performance test, and the performance data are shown in Table 2.

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Abstract

The invention relates to a preparation method of a porous SiC-coated PANI core / shell nanowire quasi array and application of the porous SiC-coated PANI core / shell nanowire quasi array in a supercapacitor, and belongs to the technical field of energy manufacturing. The invention discloses a preparation method of a porous SiC-coated PANI core / shell nanowire quasi-array, and is characterized in that the preparation method comprises the following steps: mixing polysilazane powder and melamine powder, placing the mixture in a crucible covered with a carbon substrate, and loading SiC nanowires on the carbon substrate through a chemical vapor deposition method; and then taking the carbon base material loaded with the SiC nanowires as an anode, taking a platinum sheet electrode as a cathode and taking an aniline acid solution as electrolyte, and obtaining the porous SiC-coated PANI core / shell nanowire quasi-array through pulse electrodeposition. The invention also discloses a porous SiC-coated PANI core / shell nanowire quasi array and an application of the porous SiC-coated PANI core / shell nanowire quasi array in a supercapacitor.

Description

technical field [0001] The invention belongs to the technical field of energy production, and relates to a method for preparing a porous SiC@PANI core / shell nanowire quasi-array and its application in supercapacitors. Background technique [0002] Currently, the increasing demand for energy storage devices such as lithium-ion batteries, fuel cells and supercapacitors is forcing researchers to search for sustainable energy storage technologies. Among various candidate energy storage devices, supercapacitors have attracted great interest due to their attractive properties. Such as high power, excellent cycle stability, fast charge and discharge, environmental friendliness and long life. These important attributes remain applicable to the needs of portable storage systems in today's rapidly growing electronics industry. However, despite the above-mentioned excellent features, the main obstacle for its practical application is the low energy density. So far, the common approa...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/26H01G11/30H01G11/32H01G11/48B82Y30/00B82Y40/00
CPCH01G11/86H01G11/26H01G11/30H01G11/32H01G11/48B82Y30/00B82Y40/00
Inventor 高凤梅李维俊王瑞莹李侃杨为佑
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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