Preparation and application of selenide stainless steel foam electrolyzed water catalytic material

A catalytic material, stainless steel technology, applied in the field of electrocatalytic material preparation, can solve the problems of harsh conditions, complex preparation process, low mechanical strength of nickel foam, etc., and achieve the effects of easy industrialization, good catalytic performance and low price

Inactive Publication Date: 2017-01-04
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxides and hydroxides of non-noble metals such as iron-cobalt-nickel have also shown excellent performance in electrolyzing water, such as nickel foam (ACS Catal. 2016, 6, 714−721) as the base electrolytic water catalyst, but the mechanical Low strength, complex preparation process, harsh conditions, etc.

Method used

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  • Preparation and application of selenide stainless steel foam electrolyzed water catalytic material
  • Preparation and application of selenide stainless steel foam electrolyzed water catalytic material
  • Preparation and application of selenide stainless steel foam electrolyzed water catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of preparation method of water splitting electrocatalyst is as follows: 1cm 2 The stainless steel foam sheet and 1 gram of selenium powder were respectively placed in a tube furnace, and calcined at 500° C. for 2 hours under the protection of argon to obtain a selenized stainless steel foam electrolysis water catalyst;

[0019] The obtained selenized stainless steel foam was used as the working electrode, the platinum electrode was used as the counter electrode, and the silver / silver chloride electrode was used as the reference electrode. The three-electrode system was used for electrochemical analysis in 1M KOH solution. The results show that the electrocatalytic material has good hydrogen and oxygen production performance, and the hydrogen and oxygen production can reach 100mA / cm 2 The overpotentials required for the current density are 404mv and 301mv, respectively;

Embodiment 2

[0021] Method is with embodiment 1: with 1cm 2 The stainless steel foam sheet and 1 gram of sodium selenate were respectively placed in a tube furnace, and were calcined at 500° C. for 2 hours under the protection of argon to obtain a selenized stainless steel foam electrolysis water catalyst;

[0022] The results showed that hydrogen and oxygen production reached 100mA / cm 2 The overpotentials required for the current density are 420mv and 315mv, respectively;

Embodiment 3

[0024] Method is with embodiment 1: with 1cm 2 The stainless steel foam sheet and 1 gram of sodium selenite were respectively placed in a tube furnace, and were calcined at 500° C. for 2 hours under the protection of argon to obtain a selenized stainless steel foam electrolysis water catalyst;

[0025] The results showed that hydrogen and oxygen production reached 100mA / cm 2 The overpotentials required for the current density are 434mv and 326mv, respectively;

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Abstract

The invention in particular relates to a preparation method of an electrolyzed water catalytic material and an application of the electrolyzed water catalytic material in water decomposition, and belongs to the technical field of preparation of electrocatalytic materials. According to the invention, stainless steel foam is used as a substrate, and selenium powder or selenate is used as a selenium source and calcined in an inert atmosphere in a tube furnace, thus the electrolyzed water catalytic material which takes the selenide stainless steel foam as an electrolyzed water catalyst and provides a larger surface area and more active centers is prepared. The selenide stainless steel foam electrocatalyst not only greatly lowers overpotentials required by electrolysis of water, but also obviously improves the catalytic performance of electrolyzed water. The catalyst produced by the invention is stable in performances, cheap and readily available in raw materials, simple to operate and easy in large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic material preparation, and in particular relates to a preparation method of selenized stainless steel foam electrolytic water catalytic material. Background technique [0002] Hydrogen energy is recognized as a clean energy source and is emerging as a low-carbon and zero-carbon energy source. The development of new energy is imminent in today's world. The reason is that the energy used, such as oil, natural gas, coal, and petroleum gas, are non-renewable resources. The stock on the earth is limited, and human beings cannot live without energy. Therefore, new energy must be found. With the increasing consumption of fossil fuels, their reserves are decreasing day by day, and one day these resources and energy will be exhausted, so there is an urgent need to find a new energy-containing energy that does not rely on fossil fuels and has abundant reserves. Hydrogen is just such a new secondary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057C25B1/04
CPCB01J27/0573B01J35/0033B01J37/08C25B1/04Y02E60/36
Inventor 李冬梅田忠贞
Owner UNIV OF JINAN
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