A kind of molybdenum oxide/carbon coated titanium nitride nanotube array composite material and its preparation method and application

A nanotube array and titanium nanotube technology, applied in the field of electrochemical new energy and new materials, can solve the problems of poor charge-discharge cycle stability, unsatisfactory electrical conductivity, and unsatisfactory electrochemical corrosion resistance, so as to improve electrochemical resistance. Corrosion performance, improved electrochemical energy storage performance, good effect on charge and discharge cycle stability

Active Publication Date: 2018-05-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, although titanium nitride materials in the prior art have good electrical conductivity and mechanical stability, the conductive effect is still not ideal, and the electrochemical corrosion resistance in electrolyte solutions, especially in acidic solutions, is not ideal. poor cycle stability

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  • A kind of molybdenum oxide/carbon coated titanium nitride nanotube array composite material and its preparation method and application
  • A kind of molybdenum oxide/carbon coated titanium nitride nanotube array composite material and its preparation method and application
  • A kind of molybdenum oxide/carbon coated titanium nitride nanotube array composite material and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0042] The structural schematic diagram of the molybdenum oxide / carbon coated titanium nitride nanotube array composite material described in the present invention is detailed in the appendix of the description. figure 1 . The molybdenum oxide / carbon-coated titanium nitride nanotube array composite material includes a molybdenum oxide nanofilm 1 and a carbon-coated titanium nitride nanotube array 2; The titanium nanotube array 2 serves as a conductive base layer, and the molybdenum oxide nanofilm 1 completely covers the surface of the carbon-coated titanium nitride nanotube array 2, forming an integrated molybdenum oxide / carbon-coated titanium nitride nanotube array composite material The molybdenum oxide nano-membrane 1 has a microporous membrane structure assembled from nanoparticles, and the carbon-coated titanium nitride nanotube array 2 has a nanotube array structure with tube walls connected and orderly and closely arranged.

[0043] Molybdenum oxide nano-membrane 1 is ...

Embodiment 2

[0046] The preparation process flow chart of the molybdenum oxide / carbon-coated titanium nitride nanotube array composite material described in the present invention is detailed in the appendix of the specification figure 2 . Among them, (1) is a titanium sheet, (2) is a titanium dioxide nanotube array, (3) is a titanium nitride nanotube array, (4) is a carbon-coated titanium nitride nanotube array, and (5) is an oxide Molybdenum / carbon coated titanium nitride nanotube array; (A) anodic oxidation and calcination, (B) high temperature nitriding method, (C) organic carbon source carbonization method, (D) cyclic voltammetry electrochemical deposition method .

[0047] The specific preparation steps of molybdenum oxide / carbon coated titanium nitride nanotube array composite material are as follows:

[0048] (1) Titanium dioxide nanotube array material prepared by anodic oxidation and calcination method:

[0049] A two-electrode electrochemical reaction system was established, ...

Embodiment 3

[0057] The preparation method of molybdenum oxide / carbon coated titanium nitride nanotube array composite material.

[0058] (1) Titanium dioxide nanotube array material prepared by anodic oxidation and calcination method:

[0059] A two-electrode reaction system was established. The titanium sheet was chemically polished in nitric acid and hydrofluoric acid polishing solution for 10 seconds, fully washed with deionized water and dried. The prepared titanium sheet was used as the anode and the platinum sheet was used as the cathode. The mass percent concentration was 0.25 An ethylene glycol solution composed of % ammonium fluoride and 1% water by mass was used as the reaction electrolyte. Under the condition of 60V voltage and constant reaction temperature of 25°C, the titanium dioxide nanotube array was prepared by anodic oxidation reaction for 3 hours. Then, put the titania nanotube array into a muffle furnace for high-temperature calcination to perform crystal transformatio...

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Abstract

The invention discloses a molybdenum oxide / carbon-coated titanium nitride nanotube array composite material and its preparation method and application. The material comprises a molybdenum oxide nanofilm and a carbon-coated titanium nitride nanotube array film; the oxide The molybdenum nano-film is used as the active layer for electricity storage, the carbon-coated titanium nitride nanotube array film conducts the base layer, and the molybdenum oxide nano-film completely covers the surface of the carbon-coated titanium nitride nanotube array film, forming an integrated structure of molybdenum oxide / Carbon-coated titanium nitride nanotube array composite material; the molybdenum oxide nano-membrane has a microporous film structure assembled from nanoparticles, and the carbon-coated titanium nitride nanotube array has tube walls connected, orderly and closely arranged Nanotube array structure. Compared with the prior art, the material of the present invention has better electrical conductivity and electrochemical corrosion resistance, and at the same time, the obtained material has higher energy density and power density, and has good charge-discharge cycle stability.

Description

technical field [0001] The invention relates to a molybdenum oxide / carbon-coated titanium nitride nanotube array composite material and a preparation method and application thereof, belonging to the technical field of electrochemical new energy and new materials. Background technique [0002] Facing problems such as the depletion of chemical energy, increasingly serious environmental pollution, and the intensification of the global warming effect, the development of new energy, energy saving, emission reduction, and environmental protection has become an extremely important and urgent issue for human beings. The new energy industry is playing an increasingly important role in the national economy. With the rapid development of wind power generation, photovoltaic power generation, mobile electronic equipment and other fields, high-performance energy storage devices have gradually become the technical bottleneck of new energy conversion and utilization. [0003] As a new type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/50H01G11/86H01G11/06
CPCY02E60/13
Inventor 谢一兵田芳
Owner SOUTHEAST UNIV
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