Nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and preparation method and application thereof

A bimetallic carbide and nickel foam technology, which is applied in metal material coating technology, liquid chemical plating, electrodes, etc., can solve the problems of unachievable promotion, low storage content, increased energy consumption, etc., and achieve easy application and high purity High, mild effect

Inactive Publication Date: 2017-09-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrogen production by electrolysis of water is one of the most promising and cleanest hydrogen production methods. However, due to the high overpotential of hydrogen evolution, the energy consumption increases, so the development of highly active hydrogen evolution materials to improve hydrogen production efficie

Method used

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  • Nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and preparation method and application thereof
  • Nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and preparation method and application thereof
  • Nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1. Preparation of nickel-molybdenum-based bimetallic carbide supported on nickel foam

[0034] 0.4362g Ni(NO 3 ) 2 6H 2 O, 0.5191g (NH 4 ) 6 Mo 7 o 24 4H 2O and 0.1g of glucose were added to 30mL of deionized water, and dispersed evenly by ultrasonication for 30 minutes. React in an oven for 6 hours, and after naturally cooling to room temperature, take out the nickel foam, wash it with deionized water, and dry it in an oven at 60°C. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.015L min -1 , the argon gas flow rate is 0.085L min -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 700°C at a rate of 120 minutes, and then cool it down to room temperature naturally, take out the quartz ark, and obtain the nickel-mo...

Embodiment 2

[0049] 0.4362g Ni(NO 3 ) 2 6H 2 O, 0.5191g (NH 4 ) 6 Mo 7 o 24 4H 2 O and 0.1g were dispersed in glucose and added to 30mL deionized water, and the ultrasonic wave was dispersed evenly for 30 minutes. ℃ oven for 6 hours, after naturally cooling to room temperature, the nickel foam was taken out, washed with deionized water, and dried in an oven at 60℃. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.015L min -1 , Argon gas flow rate is 0.085Lmin -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 500°C at a constant temperature for 120 minutes; then cool down to room temperature naturally, take out the quartz ark, and obtain nickel-molybdenum-based bimetallic carbide supported on nickel foam. Features and properties are simila...

Embodiment 3

[0051] 0.4362g Ni(NO 3 ) 2 6H 2 O, 0.5191g (NH 4 ) 6 Mo 7 o 24 4H 2 O and 0.1g were dispersed in glucose and added to 30mL deionized water, and the ultrasonic wave was dispersed evenly for 30 minutes. ℃ oven for 6 hours, after naturally cooling to room temperature, the nickel foam was taken out, washed with deionized water, and dried in an oven at 60℃. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.015L min -1 , the argon gas flow rate is 0.085L min -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 900°C at a constant temperature for 120 minutes; then cool down to room temperature naturally, take out the quartz ark, and obtain nickel-molybdenum-based bimetallic carbide supported on nickel foam. Features and properties are s...

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Abstract

The invention discloses a nickel-and-molybdenum based bimetallic carbide loaded on nickel foam and a preparation method and application thereof. Nickel nitrate and ammonium molybdate are adopted as a nickel source and a molybdenum source correspondingly, glucose is adopted as a carbon source, and the bimetallic carbide Mo6Ni6C is grown on the surface of the nickel foam in situ through a hydrothermal and high-temperature carburizing method. The method is easy and convenient to implement, the raw materials are easy to obtain, the preparation cost is low, the reaction period is short, and repeatability is high. The material has the excellent hydrogen evolution performance in the field of electrocatalytic decomposition of water. When the overpotential of hydrogen evolution is -51 mV in an acid electrolyte solution, the electric current density can reach 8-12 mA/cm<2> and is not decreased obviously under the stable work for more than 200 hours; and at the same time, when the overpotential of hydrogen evolution is -34 mV in an alkali electrolyte solution, the electric current density can also reach 8-12 mA/cm<2> and is not decreased obviously under the stable work for more than 300 hours. The nickel-and-molybdenum based bimetallic carbide loaded on the nickel foam not only can be directly used as a working electrode of electrocatalytic hydrogen evolution, but also can be used in the fields of the chlor-alkali industry, the water electrolysis process, solar energy water electrolysis and hydrogen manufacturing and the like.

Description

technical field [0001] The invention belongs to the nickel-molybdenum-based bimetallic carbide nanomaterial supported on foamed nickel. The material is prepared by hydrothermal and high-temperature carburizing methods. It has excellent performance in electrocatalytic hydrogen evolution and is also used in other energy development and environmental protection fields. have potential application value. Background technique [0002] The energy problem is one of the top ten problems faced by human development in the past fifty years. Energy is the material basis of human activities. The development of human society is inseparable from the emergence of high-quality energy and the use of advanced energy technology. At the same time, the fourth environmental issue should not be underestimated either. At present, traditional energy sources such as coal, oil, and natural gas still play a pivotal role in global energy, but the reserves of these resources on the earth are very limited,...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B11/06C23C18/12
CPCC23C18/1204C23C18/1241C25B11/031C25B11/075Y02P20/133
Inventor 杨化桂俎梦杨刘鹏飞
Owner EAST CHINA UNIV OF SCI & TECH
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