Solution method for in-situ preparation of molybdenum disulfide/graphite paper electrode

An in-situ preparation technology of molybdenum disulfide, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as weak adhesion between molybdenum disulfide and the substrate, uneven dispersion of molybdenum disulfide, complex process, etc.

Active Publication Date: 2019-01-25
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to prepare molybdenum disulfide powder and its slurry, the process is relatively complicated, and there are oft...

Method used

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  • Solution method for in-situ preparation of molybdenum disulfide/graphite paper electrode
  • Solution method for in-situ preparation of molybdenum disulfide/graphite paper electrode
  • Solution method for in-situ preparation of molybdenum disulfide/graphite paper electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve molybdenum chloride and thiourea in ethanol under stirring, wherein the concentrations of molybdenum chloride and thiourea are 0.33mol / L and 0.66mol / L respectively, and then drop-coat the mixed solution onto the surface of graphite paper treated with hydrophilization (The surface of graphite paper contains a large amount of -OH, -COOH, -NH 2 ), dried and annealed in Ar at 800°C for 60 min. After the sample is cooled naturally, the molybdenum disulfide / graphite paper electrode can be obtained.

Embodiment 2

[0024] Dissolve molybdenum chloride and thiourea in ethanol under stirring, wherein the concentrations of molybdenum chloride and thiourea are 0.33mol / L and 0.99mol / L respectively, and then drop-coat the mixed solution onto the hydrophilized graphite paper Surface (the surface of graphite paper contains a large amount of -OH, -COOH, -NH 2 ), dried and annealed in Ar at 800°C for 60 min. After the sample is cooled naturally, the molybdenum disulfide / graphite paper electrode can be obtained.

[0025] figure 1 The powder XRD of the sample prepared in this embodiment is shown. By working with standard PDF cards (MoS 2 PDF#37-1492) comparison shows that the prepared sample is molybdenum disulfide. It shows that after annealing in Ar at 800°C, molybdenum chloride and thiourea react to form molybdenum disulfide.

[0026] figure 2 SEM image of the sample prepared for this implementation example. The brick shape in the figure is MoS 2 , the bottom is graphite paper, it can be ...

Embodiment 3

[0032] Dissolve molybdenum chloride and thiourea in ethanol under stirring, wherein the concentrations of molybdenum chloride and thiourea are both 0.33mol / L and 1.32mol / L respectively, and then drop-coat the mixed solution onto the hydrophilized graphite paper Surface, dried and annealed in Ar at 800°C for 60min. After the sample is cooled naturally, the molybdenum disulfide / graphite paper electrode can be obtained.

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Abstract

The invention discloses a solution method for in-situ preparation of a molybdenum disulfide/graphite paper electrode in particular, an ethanol solution containing molybdenum chloride and thiourea is dropwisely added to the surface of a hydrophilic treated graphite paper, sintered under an inert atmosphere at a high temperature after drying, and taken out after cooling to obtain the molybdenum disulfide/graphite paper electrode. The reagent used in the invention is low in cost and simple in preparation. The prepared molybdenum disulfide/graphite paper electrode is closely bonded with graphite paper without falling off. SEM results show that molybdenum disulfide is uniformly coated on the surface of graphite paper. Relevant electrochemical tests show that the molybdenum disulfide/graphite paper electrode has extremely high conductivity and good electrocatalytic activity.

Description

technical field [0001] The invention relates to an in-situ electrode and a preparation method thereof, and belongs to the field of new conductive and electrocatalytic materials. Background technique [0002] Molybdenum disulfide, because of its unique chemical properties, optical, electrical, magnetic and other physical properties and good stability, is widely used in lubricants, optoelectronic materials, sulfurized glass, luminescent materials, industrial catalysts, etc., and can also be used as Electrode materials for dye-sensitized solar cells, quantum dot solar cells, lithium-ion batteries, sodium-ion batteries, supercapacitors, fuel cells, etc. [0003] In the field of electrocatalysis, catalytic materials need to be made into conductive electrodes before they can be used. The preparation process of molybdenum disulfide electrode is generally "powder preparation→slurry preparation→electrode preparation". This method needs to prepare molybdenum disulfide powder and its...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/8828H01M4/8842H01M4/8885H01M4/9083Y02E60/50
Inventor 黄妞李国旺夏芝芬孙小华
Owner CHINA THREE GORGES UNIV
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