Preparation method of molybdenum disulfide-cobalt sulfide-carbon ternary composite in-situ electrode

A molybdenum disulfide, in-situ electrode technology, applied in the direction of electrodes, battery electrodes, electrode shapes/types, etc., can solve the problems of expensive noble metal materials, lack of long-term operation stability, fuel oxidation molecular immunity, etc.

Inactive Publication Date: 2019-01-15
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such noble metal materials are expensive and lack lon...

Method used

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  • Preparation method of molybdenum disulfide-cobalt sulfide-carbon ternary composite in-situ electrode
  • Preparation method of molybdenum disulfide-cobalt sulfide-carbon ternary composite in-situ electrode
  • Preparation method of molybdenum disulfide-cobalt sulfide-carbon ternary composite in-situ electrode

Examples

Experimental program
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Embodiment 1

[0019] Dissolve molybdenum pentachloride, cobalt chloride hexahydrate, Tx-100 and thiourea in 2.7 mL N,N-dimethylformamide solution at room temperature, the total amount of molybdenum pentachloride and cobalt chloride hexahydrate The concentration is 400mM, the concentration ratio of the two substances is 1:1, the amount of Tx-100 is 0.3mL, and the concentration of thiourea is 1000mM. Soak the carbon paper in the precursor solution for 30 minutes, take it out, dry it on a hot table at 80°C for 10 minutes, then apply the precursor solution evenly on the carbon paper, and then continue to dry for 30 minutes. Put the coated carbon paper into a tube furnace, react at 600 °C for 1 h under Ar atmosphere, and take it out after natural cooling.

Embodiment 2

[0021] Dissolve molybdenum pentachloride, cobalt chloride hexahydrate, Tx-100 and thiourea in 2.7 mL N,N-dimethylformamide solution at room temperature, the total amount of molybdenum pentachloride and cobalt chloride hexahydrate The concentration is 400mM, the concentration ratio of the two substances is 1:3, the amount of Tx-100 is 0.3mL, and the concentration of thiourea is 1000mM. Soak the carbon paper in the precursor solution for 30 minutes, take it out, dry it on a hot table at 80°C for 10 minutes, then apply the precursor solution evenly on the carbon paper, and then continue to dry for 30 minutes. The coated carbon paper was placed in a tube furnace, reacted at 600 °C for 1 h under Ar flow, and was taken out after naturally cooling to room temperature.

[0022] figure 1 For the prepared molybdenum disulfide-cobalt sulfide-carbon in situ electrode of embodiment 2 at 50mA / cm 2 Stability test graph performed under constant current. As can be seen from the figure, th...

Embodiment 3

[0024] Dissolve molybdenum pentachloride, cobalt chloride hexahydrate, Tx-100 and thiourea in 2.7 mL N,N-dimethylformamide solution at room temperature, the total amount of molybdenum pentachloride and cobalt chloride hexahydrate The concentration is 400mM, the concentration ratio of the two substances is 1:3, the amount of Tx-100 is 0.3mL, and the concentration of thiourea is 1000mM. Soak the carbon paper in the precursor solution for 30 minutes, take it out, dry it on a hot table at 80°C for 10 minutes, then apply the precursor solution evenly on the carbon paper, and then continue to dry for 30 minutes. The coated carbon paper was placed in a tube furnace, reacted at 600 °C for 1 h under Ar flow, and was taken out after naturally cooling to room temperature. Continue to react the carbon paper taken out at 400°C in the air for 30 minutes, and then take it out after naturally cooling to room temperature.

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Abstract

The invention provides a preparation method of a multifunctional molybdenum disulfide-cobalt sulfide-carbon in-situ composite electrode. According to the preparation method, molybdenum salts, cobalt salts, and carbon containing organic matters are dissolved in a volatile nonaqueous solvent; thiourea is taken as the sulfur source and is added into the solvent to obtain a Mo-Co-C-S precursor solution; the precursor solution is painted on a substrate, and then the substrate is dried and is placed in Ar or N2 air flow to carry out annealing and vulcanization. The preparation method has the advantages of low equipment requirements, cheap raw materials, easily controllable reaction conditions, simple production technology, good product uniformity, and little environmental pollution, and the prepared electrode can be used as a multifunctional electric catalyst for HER, OER, and ORR.

Description

technical field [0001] The invention relates to an in-situ electrode and its preparation, and belongs to the field of energy storage and conversion materials and devices. Background technique [0002] The growing demand for renewable and clean energy drives the world to seek environmentally friendly, economically sustainable and efficient energy technologies. The hydrogen evolution reaction is an important kinetic process for hydrogen production and has the potential to replace fossil fuels. Likewise, efficient oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are also crucial in renewable energy platforms, especially for fuel cells and rechargeable batteries. Currently, developing a practical, economically viable, highly stable, and performance-enhanced electrocatalyst remains a major task. Platinum and its derivatives are by far the most effective electrocatalysts for ORR and HER. However, such noble metal materials are expensive and lack long-term ope...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/03C25B1/04H01M4/90H01M4/62
CPCC25B1/04C25B11/031C25B11/051C25B11/091H01M4/62H01M4/90Y02E60/10Y02E60/36Y02E60/50
Inventor 黄妞闫术芳丁玉岳孙小华孙盼盼
Owner CHINA THREE GORGES UNIV
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