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Nanoscale nickel phosphide/carbon cloth composite material and its preparation method and application in electrocatalyst

A composite material and nano-scale technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high toxicity of gas-solid reactions, unfavorable industrialization, difficult industrialization, etc., and achieve excellent The effect of hydrogen production rate, great application potential and industrial value

Active Publication Date: 2021-09-21
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the synthetic route of TMP, the solution phase reaction uses white phosphorus (P 4 ) or tri-n-octylphosphine (TOP) as a phosphorus source, however, due to the limited temperature range of the solvent for this reaction, it usually does not exceed 400 ° C or the maximum reflux temperature of the highest boiling point solvent, and the gas-solid reaction is extremely toxic , the hydrothermal reaction usually requires higher temperature and longer reaction time
For example, patents CN108172770A and CN108083242A use vapor deposition to obtain nickel phosphide composite materials, which not only require higher temperatures, but also have limited output, making it difficult to industrialize; patent CN107502919A uses solvothermal synthesis, which requires high temperature and high pressure, which is not conducive to industrialization;

Method used

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  • Nanoscale nickel phosphide/carbon cloth composite material and its preparation method and application in electrocatalyst
  • Nanoscale nickel phosphide/carbon cloth composite material and its preparation method and application in electrocatalyst
  • Nanoscale nickel phosphide/carbon cloth composite material and its preparation method and application in electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1: Prepare a precursor solution with a nickel sulfate concentration of 0.05mol / L, a sodium hypophosphite concentration of 0.5mol / L, and a sodium citrate concentration of 0.1mol / L;

[0036] S2: Put the above precursor solution in a constant temperature glass reactor, the counter electrode is a platinum sheet electrode, the reference electrode is a silver silver chloride electrode, and the working electrode is a carbon cloth, and pulse deposition is selected on a CHI electrochemical workstation, specifically: :

[0037] S2-1: Under the voltage of -0.5V, deposit for 1s;

[0038] S2-2: Deposit at -2.2V voltage for 20s, and cycle 10 times to obtain nickel phosphide / carbon cloth under this condition;

[0039] S2-3: The obtained nickel phosphide / carbon cloth was washed with ethanol and distilled water, and dried in a vacuum oven at 60°C overnight to obtain a nanoscale nickel phosphide composite material, which was named H1.

Embodiment 2-5

[0040] Embodiment 2-5: Investigation of different deposition voltages

[0041] Except that different deposition voltages shown in Table 1 below were used in step S1, other operations were the same as in Example 1, so that Embodiments 2-5 were carried out. The deposition time and composite material names used are shown in Table 1 below.

[0042] Table 1. Composite materials obtained under different deposition voltages

[0043]

Embodiment 6-7

[0044] Embodiment 6-7: the investigation of deposition time

[0045] Except that the different deposition times shown in Table 2 below were used in step S1, other operations were the same as in Example 1, so that Examples 6-7 were carried out. The deposition times and names of composite materials used are shown in Table 2 below.

[0046] Table 2. Composite materials obtained under different deposition times

[0047]

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Abstract

The invention discloses a nanoscale nickel phosphide / carbon cloth composite material and its preparation method and its application in electrocatalysts. Nickel source, phosphorus source and chelating agent are used as electrolyte solution, and a simple and rapid pulse electrodeposition method is used on carbon cloth. The nickel phosphide deposited and synthesized in the previous step has excellent electrochemical properties, so it can be applied in the field of acid electrolysis of water, and has good application prospects and industrialization potential.

Description

technical field [0001] The invention belongs to the technical field of inorganic functional materials and electrochemical energy, and specifically relates to a nanometer material, in particular to a nanoscale nickel phosphide / carbon cloth composite material and its preparation method and application in electrocatalysts. Background technique [0002] With the continuous development of human society and economy and the growth of population, the world's demand for non-renewable primary energy is increasing day by day, and the ensuing environmental problems are becoming increasingly severe. Due to its non-renewability and limited storage capacity, development including solar energy, bio New renewable energy including material energy, wind energy and hydrogen energy has become an urgent task in the field of energy science. Among many renewable energy sources, solar energy and wind energy have the characteristics of difficult storage, large area, and high cost, while biomass energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/185B01J35/08C25B1/04C25B11/075C25B11/065C25B11/052
CPCC25B1/04C25B11/04B01J27/1853B01J35/33B01J35/51Y02E60/36
Inventor 王舜金辉乐任倩李俊刘爱丽王继昌
Owner WENZHOU UNIV
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