Transition metal phosphorus sulfide as well as preparation method and application thereof

A phosphide, transition metal technology, applied in the field of electrocatalysis, can solve the problems of poor electrochemical activity and cycle stability of transition metal phosphide

Active Publication Date: 2021-06-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, transition metal phosphides prepared by traditional processes have problems such as poor electrochemical activity and poor cycle stability.

Method used

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  • Transition metal phosphorus sulfide as well as preparation method and application thereof
  • Transition metal phosphorus sulfide as well as preparation method and application thereof
  • Transition metal phosphorus sulfide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a kind of preparation method of transition metal phosphorous sulfide, it comprises the following steps:

[0030] S1, cut 2×2cm 2 Nickel foam, and repeated ultrasonic cleaning of nickel foam with dilute hydrochloric acid and absolute ethanol for 30 minutes in order to remove the nickel oxide layer on the surface to expose a clean outer wall, and then put it in an oven to dry for 12 hours, waiting for use.

[0031] S2. Mix 0.872g nickel nitrate hexahydrate, 0.437g nitric acid hexahydrate, 1.35g urea and 0.037g ammonium fluoride, and add 35mL of deionized water as a solvent to prepare a solution to obtain a precursor solution; The addition of ammonium acts as a morphology inducer.

[0032] S3. After stirring the precursor solution for 30 minutes, pour it into the polytetrafluoroethylene lining, and then put the above-mentioned cleaned foamed nickel into the precursor solution (use polytetrafluoroethylene tape to stick one side to induce its growth...

Embodiment 2

[0035] This embodiment provides a kind of preparation method of transition metal phosphorous sulfide, it comprises the following steps:

[0036] S1, cut 2×2cm 2 Nickel foam, and repeated ultrasonic cleaning of nickel foam with dilute hydrochloric acid and absolute ethanol for 30 minutes in order to remove the nickel oxide layer on the surface to expose a clean outer wall, and then put it in an oven to dry for 12 hours, waiting for use.

[0037] S2. Mix 0.872g nickel nitrate hexahydrate, 0.437g nitric acid hexahydrate, 1.35g urea and 0.037g ammonium fluoride, and add 35mL of deionized water as a solvent to prepare a solution to obtain a precursor solution; The addition of ammonium acts as a morphology inducer.

[0038] S3. After stirring the precursor solution for 30 minutes, pour it into the polytetrafluoroethylene lining, and then put the above-mentioned cleaned foamed nickel into the precursor solution (use polytetrafluoroethylene tape to stick one side to induce its growth...

Embodiment 3

[0041] This embodiment provides a kind of preparation method of transition metal phosphorous sulfide, it comprises the following steps:

[0042] S1, cut 2×2cm 2 Nickel foam, and repeated ultrasonic cleaning of nickel foam with dilute hydrochloric acid and absolute ethanol for 30 minutes in order to remove the nickel oxide layer on the surface to expose a clean outer wall, and then put it in an oven to dry for 12 hours, waiting for use.

[0043] S2. Mix 0.872g nickel nitrate hexahydrate, 0.437g nitric acid hexahydrate, 1.35g urea and 0.037g ammonium fluoride, and add 35mL of deionized water as a solvent to prepare a solution to obtain a precursor solution; The addition of ammonium acts as a morphology inducer.

[0044] S3. After stirring the precursor solution for 30 minutes, pour it into the polytetrafluoroethylene lining, and then put the above-mentioned cleaned foamed nickel into the precursor solution (use polytetrafluoroethylene tape to stick one side to induce its growth...

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Abstract

The invention is suitable for the technical field of electro-catalysis, and provides a transition metal phosphorus sulfide and a preparation method and application thereof. The preparation method of the transition metal phosphorus sulfide comprises the following steps of mixing nickel nitrate, cobalt nitrate, urea and ammonium fluoride and preparing a solution to obtain a precursor solution; adding foamed nickel into the precursor solution for hydrothermal reaction to obtain a precursor; and under a protective atmosphere, placing the precursor in an environment containing sodium hydrosulfide and sodium hypophosphite, and carrying out calcination treatment to obtain the transition metal phosphorus sulfide. According to the preparation method, a nickel-cobalt hydroxide precursor is generated through a hydrothermal method, then a phosphorus source and a sulfur source are doped at the same time in a protective gas heating mode, and S and P can be induced to generate a heterostructure. Due to the synergistic effect of different elements, the structure accelerates electron transmission, so that the conductivity of the transition metal phosphorus sulfide can be improved, and the advantages show high catalytic activity and long-acting stability in an electro-catalysis test.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to a transition metal phosphorous sulfide and its preparation method and application. Background technique [0002] Due to the increasingly serious energy crisis and a series of environmental problems arising from social activities such as excessive reliance on fossil energy to maintain industrial production, it is necessary to explore new, sustainable, renewable, and environmentally friendly products to a certain extent. Alternative energy and energy storage systems are imminent. [0003] Given that the main product of water splitting is H that can be used for energy storage 2 and the O we live on 2 , so the development and application of water splitting, like wind energy, solar energy and other renewable energy sources, has received a lot of attention. Electrocatalytic water splitting is an important branch of water splitting. [0004] Transition metal pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091
CPCC25B1/04Y02E60/36Y02P20/133
Inventor 王国勇王瑜喆孙贵训王翻玲张君宇余小帅戴凌杰
Owner JILIN UNIV
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