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Preparation method for self-support ferrocobalt phosphide nanosphere electrocatalyst

A cobalt iron phosphide, nano-microsphere technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high cost, scarcity, application limitations, etc. Effects of transport, low cost, good stability and catalytic activity

Inactive Publication Date: 2019-05-31
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its application is greatly limited due to the high cost and scarcity of Pt

Method used

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  • Preparation method for self-support ferrocobalt phosphide nanosphere electrocatalyst
  • Preparation method for self-support ferrocobalt phosphide nanosphere electrocatalyst
  • Preparation method for self-support ferrocobalt phosphide nanosphere electrocatalyst

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specific Embodiment approach 1

[0017] Specific embodiment one: a kind of preparation method of self-supporting cobalt iron phosphide nano microsphere electrocatalyst of the present embodiment is characterized in that the preparation method comprises the following steps:

[0018] 1. Treatment of foamed nickel: First, cut the foamed nickel into 1×1.5cm, place it in hydrochloric acid solution for ultrasonic treatment, then place it in acetone for ultrasonic treatment, then place it in water for ultrasonic treatment, and then immerse it in ethanol. use;

[0019] 2. Weigh cobalt chloride hexahydrate, ferric chloride hexahydrate, ammonium fluoride and urea, first mix cobalt chloride hexahydrate, ammonium fluoride and urea for 20-40 minutes, then add ferric chloride hexahydrate Stir for 8-12 hours to obtain a mixed reagent, stir at room temperature to obtain a homogeneous solution;

[0020] 3. Immerse the nickel foam treated in step 1 into the homogeneous solution obtained in step 2, and add it to the reaction ke...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the molar ratio of sodium hypophosphite to cobalt chloride hexahydrate is 5:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the molar ratio of cobalt chloride hexahydrate, ferric chloride hexahydrate, ammonium fluoride and urea is 1:2:5:10. Others are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method for a self-support ferrocobalt phosphide nanosphere electrocatalyst, and relates to the preparation method of the electrocatalyst. The preparation method comprises the steps that firstly, commercial cobalt chloride hexahydrate, ferric trichloride hexahydrate, ammonium fluoride and urea are weighed, a nickel net is adopted, then the weighed reagents aremixed and stirred to obtain a mixed reagent, a reaction is conducted for some time in a reaction kettle, and a precursor is obtained; the obtained precursor is calcined in a tube furnace, and CoFeP isobtained. The preparation method is low in cost, the preparation technology is simple, ferrocobalt phosphide nanospheres have the larger specific surface areas, and more active sites are exposed. When the molar ratio of an iron source to a cobalt source is 1:2, the reaction is conducted for 10 hours in a drying oven, the ferrocobalt phosphide nanospheres have good stability and good catalytic activity, no other adhesive agents are needed, and electron transmission is increased. The preparation method is applied to the field of fossil fuel.

Description

technical field [0001] The invention relates to a method for preparing an electrocatalyst, in particular to a method for preparing an electrocatalyst of cobalt iron phosphide nano microspheres. Background technique [0002] The ever-increasing consumption of fossil fuels leads to global energy crisis, climate change, and environmental pollution, thereby inhibiting industrial development and destroying the earth's ecosystem. The development and production of green and clean energy technologies have great significance and prospects for the substantial development of economy and society. Hydrogen is an ideal, clean and sustainable energy to replace traditional fossil fuels, and is considered as a solution to energy demand and environmental problems. Electrocatalytic hydrogen evolution reaction (HER) is a promising route for abundant and clean production of hydrogen. Hydrogen production from water has attracted great attention of researchers in recent years, however, the practi...

Claims

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Application Information

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IPC IPC(8): B01J27/185B01J35/08B01J35/10
Inventor 潘凯耿慧敏王晓燕王秀文王嵩
Owner HEILONGJIANG UNIV
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