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A nickel sulfide/graphene/carbon nanotube/co 3 the s 4 Preparation method of three-dimensional composite hydrogen storage material

A carbon nanotube and three-dimensional composite technology, which is applied in the direction of nickel sulfide, electrical components, battery electrodes, etc., can solve the problem that cobalt sulfide composite materials cannot be used as electrochemical hydrogen storage electrodes, and achieve the effect of improving hydrogen storage performance

Active Publication Date: 2017-06-30
HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The present invention aims to solve the technical problem that the existing cobalt sulfide composite material cannot be used as an electrochemical hydrogen storage electrode, and provides a nickel sulfide / graphene / carbon nanotube / Co 3 S 4 Preparation method of three-dimensional composite hydrogen storage material

Method used

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  • A nickel sulfide/graphene/carbon nanotube/co <sub>3</sub> the s <sub>4</sub> Preparation method of three-dimensional composite hydrogen storage material
  • A nickel sulfide/graphene/carbon nanotube/co <sub>3</sub> the s <sub>4</sub> Preparation method of three-dimensional composite hydrogen storage material
  • A nickel sulfide/graphene/carbon nanotube/co <sub>3</sub> the s <sub>4</sub> Preparation method of three-dimensional composite hydrogen storage material

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specific Embodiment approach 1

[0023] Specific embodiment one: a kind of nickel sulfide / graphene / carbon nanotube / Co of the present embodiment 3 S 4 The preparation method of the three-dimensional composite hydrogen storage material is carried out according to the following steps:

[0024] 1. Prepare a graphene oxide dispersion solution by the Hummers method, adjust the concentration to 2.2-2.5mg / mL, then add carbon nanotubes and mix evenly to obtain a graphene oxide / carbon nanotube dispersion; wherein the carbon nanotubes and graphene oxide The mass ratio is 1:(1~1.5);

[0025] Two, cobalt acetate and sulfur are 1:(3~4) join in graphene oxide / carbon nanotube dispersion liquid with molar ratio, continue to stir until uniform, obtain mixed liquor; Wherein the mass ratio of cobalt acetate and graphene is 1: (0.2~0.5);

[0026] 3. Press ZrO 2 The mass ratio of the grinding ball to the mixed solution is 1: (10-15), and the ZrO 2 Grinding balls and mixed liquid loaded with ZrO 2 Fill the lined ball milling ...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of the graphene oxide dispersion solution in step 1 is 2.4 mg / mL. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the mass ratio of carbon nanotubes to graphene oxide in step 1 is 1:1.2. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a preparation method for a nickel sulfide / graphene / carbon nano tube / cobalt sulfide three-dimensional composite hydrogen storage material and relates to a method for preparing the composite hydrogen storage material. The method aims at solving the technical problem that an existing cobalt sulfide composite material cannot be used as an electrochemical hydrogen storage electrode. The preparation method includes the steps that 1, oxidized graphene / carbon nano tube dispersion liquid is prepared; 2, cobaltous acetate and sulfur are added into the oxidized graphene / carbon nano tube dispersion liquid, the mixture is stirred to be uniform, and mixed liquid is obtained; 3, the mixed liquid is ball-milled; 4, foamed nickel is washed; 5, the mixed dispersion liquid is added into a hydrothermal kettle, glucose is added, foamed nickel is soaked in the mixed dispersion liquid, and a hydrothermal reaction is conducted for 48-60 h at the temperature of 180-220 DEG C; after the reaction is over, leaching and freeze drying are conducted, and the nickel sulfide / graphene / carbon nano tube / cobalt sulfide three-dimensional composite hydrogen storage material is obtained. The specific area of the composite hydrogen storage material ranges from 70 m<2> / g to 81 m<2> / g, and the composite hydrogen storage material can be used as the hydrogen storage electrode.

Description

technical field [0001] The present invention relates to a kind of preparation Co 3 S 4 A method for a three-dimensional composite hydrogen storage material of graphene / carbon nanotube / nickel sulfide, in particular to a method for preparing an electrochemical hydrogen storage electrode material. Background technique [0002] Energy crisis and environmental pollution have become global problems. In order to realize the sustainable development of society, countries around the world continue to increase the development of new energy sources in order to obtain efficient, clean and pollution-free energy. Among the new energy sources, hydrogen energy has the advantages of having the highest energy-to-mass ratio and being clean and pollution-free during use, so its development and utilization have attracted widespread attention. However, hydrogen energy is not easy to store. After long-term research, researchers have found that solid hydrides can realize the reversible utilization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36
CPCC01G53/11C01P2002/72C01P2004/03C01P2004/80
Inventor 韩璐曹栋张志伟
Owner HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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