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Preparation method of three-dimensional integral transition metal compound electrode

A technology of transition metals and transition metal salts, applied in the direction of electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of high cost of electrolytic water catalysts and scarcity of raw materials, so as to improve electrochemical catalytic efficiency, reduce energy consumption costs, and reduce costs Effect

Active Publication Date: 2019-06-21
INNER MONGOLIA UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the high cost of electrolytic water catalysts and the scarcity of raw materials, etc., and provides a large-scale preparation method of a three-dimensional monolithic transition metal compound electrode

Method used

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  • Preparation method of three-dimensional integral transition metal compound electrode
  • Preparation method of three-dimensional integral transition metal compound electrode
  • Preparation method of three-dimensional integral transition metal compound electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Weigh 0.04 mol of cobalt sulfate heptahydrate, dissolve it in 100 mL of deionized water to prepare a cobalt sulfate solution, take 20 mL of diethylamine and add it to the cobalt sulfate solution to make a solution, add 5 cm x 5 cm of pretreated concentrated hydrochloric acid Titanium foil was heated to 60 °C in an oil bath for 48 h, washed and dried to prepare a three-dimensional monolithic electrode of basic cobalt sulfate. Then put the electrode into a tube furnace, put 0.5 g of sodium hypophosphite powder, pass through nitrogen, and react at 300 °C for 4 hours to prepare a three-dimensional monolithic electrode of cobalt phosphide, which has good electrocatalysis in the solution of pH=0-14 Hydrogen evolution performance.

Embodiment 2

[0021] Weigh 0.03 mol of nickel nitrate hexahydrate, dissolve it in 100 mL of deionized water to prepare a nickel nitrate solution, take 20 mL of ethanolamine and add it to the nickel nitrate solution to make a solution, add 5 cm x 5 cm nickel foam pretreated with dilute hydrochloric acid , heated to 100 °C in an oil bath for 4 h, washed and dried to prepare a three-dimensional monolithic electrode of basic nickel nitrate. Then put it into a tube furnace, pass through ammonia gas, and react at 400 °C for 3 hours to prepare a three-dimensional nickel nitride monolithic electrode, which has good electrocatalytic hydrogen evolution performance in a solution of pH=0-14.

Embodiment 3

[0023] Weigh 0.03 mol of ferric chloride hexahydrate, dissolve it in 100 mL of deionized water to prepare a ferric chloride solution, take 20 mL of ethanolamine and add it to the ferric chloride solution to make a solution, add 5 cm x A 5 cm carbon cloth was heated to 150 °C in an oil bath for 12 h, washed and dried to prepare a three-dimensional monolithic electrode of basic ferric chloride. Then put it into a tube furnace and add 0.5 g of sulfur powder, pass through nitrogen, and react at 500 °C for 1 hour to prepare a three-dimensional monolithic electrode of iron sulfide, which has good electrocatalytic hydrogen evolution performance in a pH=0-14 solution.

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Abstract

The invention relates to a preparation method of a three-dimensional integral transition metal compound electrode. A two-dimensional layered transition metal compound is grown on the surface of a substrate material to prepare a three-dimensional integral electrode. The electrode can be used for preparing a three-dimensional integral transition metal compound (phosphide, nitride, sulfide, selenide)electrode through subsequent reactions. The electrode developed according to the invention does not need to be subjected to glassy carbon electrode coating, can be directly used as an electrolysis water electrode, has a simple process, is green and safe, has a low raw material cost, can be produced on a large scale, has excellent electrocatalytic hydrogen evolution performance in a solution witha pH value within a range of 0-14, and has a wide application prospect in the field of water electrolysis for preparation of hydrogen.

Description

technical field [0001] The invention relates to a preparation method of a three-dimensional monolithic transition metal compound electrode. Background technique [0002] In recent years, with the excessive exploitation and utilization of fossil fuels such as coal, oil, and natural gas, the global environment has deteriorated. At the same time, these non-renewable energy reserves are also decreasing, and mankind will face a severe energy crisis. Therefore, finding a large-scale new green energy preparation technology that can be industrialized has become an important research direction for scholars. New green energy includes solar energy, wind energy, hydrogen energy, etc. Among them, hydrogen has broad development prospects due to its high combustion calorific value, non-polluting products, and easy storage and transportation. [0003] At present, hydrogen production by electrolysis of water is an important means to achieve large-scale production of hydrogen due to its simp...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCY02E60/36
Inventor 张军曹博刘宝仓荆鹏成艳
Owner INNER MONGOLIA UNIVERSITY
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