Graphite carbon/metal nitride composite nanotube array and preparation method and application thereof

A nanotube array and nanorod array technology are applied in the field of graphitic carbon/metal nitride composite nanotube arrays and their preparation to achieve the effects of improving charge and discharge speed, excellent charge and discharge speed and energy density, and a simple and efficient preparation method.

Active Publication Date: 2019-04-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, how to combine metal nitrides with nanotube arrays to form composite nanotube arrays and synergistically improve the electrical conductivity of materials has always been a difficult point in the research of conductive materials for metal nitride nanotube arrays.

Method used

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  • Graphite carbon/metal nitride composite nanotube array and preparation method and application thereof
  • Graphite carbon/metal nitride composite nanotube array and preparation method and application thereof
  • Graphite carbon/metal nitride composite nanotube array and preparation method and application thereof

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Embodiment 1

[0042] A graphitic carbon / metal nitride composite nanotube array, composed of graphitic carbon and metal nitride cobalt nitride to form a graphitic carbon / metal nitride double-walled nanotube array, the tube of the graphitic carbon / metal nitride double-walled nanotube array The diameter is 600nm, the length is 10μm, the thickness of graphite carbon wall is 50nm, and the thickness of cobalt nitride wall is 250nm.

[0043] The above graphitic carbon / metal nitride composite nanotube array is prepared by the electrodeposition method guided by the ZnO template method according to the following steps:

[0044] S1: ZnO nanorod arrays were immersed in 3mol / L glucose solution for 60 minutes, and then heat-treated at 1000°C for 3 hours under vacuum conditions to obtain ZnO / graphitic carbon composite nanorod arrays;

[0045] S2: Using the ZnO / graphite carbon composite nanorod array as the cathode, at 1.0mol / L Co(NO 3 ) 2 In solution, at a current density of 3.0mA / cm 2 Electrodepositio...

Embodiment 2

[0054] A graphitic carbon / metal nitride composite nanotube array, composed of graphitic carbon and metal nitride cobalt nitride to form a graphitic carbon / metal nitride double-walled nanotube array, the tube of the graphitic carbon / metal nitride double-walled nanotube array The diameter is 600nm, the length is 10μm, the thickness of graphite carbon wall is 60nm, and the thickness of cobalt nitride wall is 120nm.

Embodiment 3

[0056] A graphitic carbon / metal nitride composite nanotube array, composed of graphitic carbon and metal nitride cobalt nitride to form a graphitic carbon / metal nitride double-walled nanotube array, the tube of the graphitic carbon / metal nitride double-walled nanotube array The diameter is 1000nm, the length is 10μm, the thickness of the graphite carbon wall is 150nm, and the thickness of the cobalt nitride wall is 200nm.

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Abstract

The invention relates to the field of supercapacitor electrode materials, especially to a graphite carbon / metal nitride double-walled nanotube array and a preparation method thereof. The ZnO templateelectrodeposition method is employed to achieve the attachment of a metallic oxide to the surface of a graphite carbon layer and dual-layer coating of a ZnO nanorod by the metal nitride to perform nitrogen treatment and acid pickling for the metallic oxide so as to prepare a graphite carbon / metal nitride composite nanotube array. The preparation method can achieve controllable synthesis of the graphite carbon / metal nitride composite nanotube array and can regulate and control the thickness of each layer of the graphite carbon layer and the metal nitride layer so as to observably improve the conductivity of the metal nitride, improve the transmission speed of electroactive species and improve the performances of electrode materials. The graphite carbon / metal nitride double-walled nanotube array and the preparation method thereof are simple in process, are suitable for large-scale or industrial production, and the prepared graphite carbon / metal nitride composite nanotube array has a superior supercapacitor performance.

Description

technical field [0001] The present invention relates to the field of supercapacitor electrode materials, more specifically, to a graphitic carbon / metal nitride composite nanotube array and its preparation method and application. Background technique [0002] The key component of a supercapacitor is the electrode material, and its performance determines the performance of the supercapacitor. Nanotube array electrodes are widely used in the research of high-performance supercapacitor electrode materials due to their unique morphology advantages such as high order and large specific surface area. transition metal oxide MnO 2 , NiO, Co 3 o 4 , Hydroxide Co(OH) 2 , Ni(OH) 2 , Li-ion electrode material Li 4 Ti 5 o 12 、H 2 Ti 6 o 13 Due to the advantages of low cost and high capacitance performance, it has attracted widespread attention of scientists as an electrode material for supercapacitors. However, a fatal shortcoming of the above-mentioned materials is poor condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/32
CPCH01G11/24H01G11/30H01G11/32Y02E60/13
Inventor 李高仁王辉何序骏
Owner SUN YAT SEN UNIV
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