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Preparation method of nickel sulfide/graphene/cobalt sulfide three-dimensional composite hydrogen storage material

A technology of three-dimensional composite and hydrogen storage materials, which is applied in the field of preparation of electrochemical hydrogen storage electrode materials, can solve the problems that cobalt sulfide composite materials cannot be used as electrochemical hydrogen storage electrodes, and achieve simple preparation methods, large specific surface area, and The effect of high hydrogen performance

Active Publication Date: 2016-08-24
HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
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  • Description
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  • Application Information

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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 preparation method of a nickel sulfide / graphene / cobalt sulfide three-dimensional composite hydrogen storage material

Method used

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  • Preparation method of nickel sulfide/graphene/cobalt sulfide three-dimensional composite hydrogen storage material
  • Preparation method of nickel sulfide/graphene/cobalt sulfide three-dimensional composite hydrogen storage material
  • Preparation method of nickel sulfide/graphene/cobalt sulfide three-dimensional composite hydrogen storage material

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specific Embodiment approach 1

[0022] Specific embodiment one: the preparation method of a nickel sulfide / graphene / cobalt sulfide three-dimensional composite hydrogen storage material of the present embodiment is carried out according to the following steps:

[0023] 1. Prepare a graphene oxide dispersion solution by the Hummers method, and adjust the concentration to 1.8-2.2 mg / ml;

[0024] Two, cobalt acetate and sulfur are 1:(3~4) join in the graphene oxide dispersion solution with molar ratio, continue to stir until uniform, obtain mixed solution; Wherein the mass ratio of cobalt acetate and graphene is 1:(0.2 ~0.5);

[0025] 3. Press ZrO 2 The mass ratio of the grinding ball to the mixed solution is 1: (15-20), and the ZrO 2 Grinding balls and mixed liquid loaded with ZrO 2 Fill the lined ball milling tank with high-purity argon gas, and finally fix the ball milling tank in the ball mill, mill for 4-8 hours at the ball mill speed of 500-700rpm, after the ball milling is completed and the ball millin...

specific Embodiment approach 2

[0028] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the concentration of graphene oxide in the graphene oxide dispersion solution in step 1 is 2 mg / ml; others are the same as Embodiment 1.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molar ratio of cobalt acetate to sulfur in step 2 is 1:3.5; others are the same as Embodiment 1 or 2.

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Abstract

The invention provides a preparation method of a nickel sulfide / graphene / cobalt sulfide three-dimensional composite hydrogen storage material, relates to a method for preparing the three-dimensional composite hydrogen storage material and aims at solving the technical problem that an existing cobalt sulfide composite material cannot be used as an electrochemical hydrogen storage electrode. The method comprises the following steps: (1) preparing a graphene oxide disperse solution; (2) adding cobaltous acetate and sulphur to the graphene oxide disperse solution to prepare a mixed solution; (3) preparing a mixed dispersion liquid in a ball-milling manner; (4) cleaning nickel foam; and (5) adding the mixed dispersion liquid to a hydrothermal kettle, adding glucose, immersing the nickel foam into the mixed dispersion liquid, carrying out hydrothermal reaction and then carrying out cleaning and freeze drying on the product to obtain the nickel sulfide / graphene / cobalt sulfide three-dimensional composite hydrogen storage material. The specific surface area of the composite hydrogen storage material is 67-78m<2> / g; the preparation method is simple; the reaction period is short; final treatment is not needed; the hydrogen storage property is high; and the nickel sulfide / graphene / cobalt sulfide three-dimensional composite hydrogen storage material can be directly applied to the field of electrochemical hydrogen storage as the hydrogen storage electrode.

Description

technical field [0001] The invention relates to a method for a three-dimensional composite hydrogen storage material, in particular to a preparation method for 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 of hydrogen energy through electrochemical methods. Therefore, the research focus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/24
CPCH01M4/366H01M4/5815H01M4/625H01M10/24Y02E60/10
Inventor 韩璐曹栋张志伟
Owner HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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