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Anti-perovskite nitride InNi3N hydrogen evolution electrocatalytic material, preparation method and application thereof

An electrocatalytic material, anti-perovskite technology, applied in the field of electrocatalytic materials and clean energy, can solve the problems of HER performance decline, easy dissolution, agglomeration, poor stability, etc., to achieve easy process control, improve chemical stability and Active, easy-to-prepare effect

Active Publication Date: 2018-12-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its poor stability, it is prone to problems such as dissolution and agglomeration during the long-term circulation process, which leads to a decrease in its HER performance, and has not yet been applied on a large scale.
So far, no nitride-based hydrogen evolution catalysts have been reported.

Method used

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  • Anti-perovskite nitride InNi3N hydrogen evolution electrocatalytic material, preparation method and application thereof
  • Anti-perovskite nitride InNi3N hydrogen evolution electrocatalytic material, preparation method and application thereof
  • Anti-perovskite nitride InNi3N hydrogen evolution electrocatalytic material, preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] InNi 3 The preparation of N-type metal nitride catalyst specifically comprises the following steps:

[0039] (1) Weigh 0.5mmol of In(Ac) respectively 3 , 0.15mmol of Ni(Ac) 2 4H 2 Mix O solid and 0.25g P123 in 15mL deionized water evenly, and sonicate for 6 hours;

[0040] (2) adding 2.5mL of ammonia water with a mass fraction of 25% in the dispersion obtained in step (1);

[0041] (3) Transfer the mixed solution obtained in step (2) to an oil bath, keep a constant temperature of 100° C. and stir until the solvent is completely evaporated to dryness;

[0042] (4) Put the powder obtained in step (3) into a muffle furnace for calcination at 600° C. for 6 hours to remove the surfactant;

[0043] (5) Grind the powder obtained in step (4) and put it into a tube furnace, inject ammonia gas with a volume flow rate of 50 sccm, and heat-treat at 800°C for 12 hours to obtain InNi 3 N-type metal nitride electrocatalyst materials.

[0044] According to the X-ray diffraction ...

Embodiment 2

[0048] InNi 3 The preparation of N-type metal nitride catalyst specifically comprises the following steps:

[0049] (1) Weigh 0.5mmol of In(Ac) respectively 3 , 0.15mmol of Ni(Ac) 2 4H 2 O solid and 0.25g CTAB (cetyltrimethylammonium bromide) were mixed homogeneously in 15mL deionized water, and ultrasonicated for 4 hours;

[0050] (2) adding 2.0 g of urea and 5 mL of aqueous ammonia with a mass fraction of 25% in the dispersion obtained in step (1);

[0051] (3) Transfer the mixed solution obtained in step (2) to an oil bath, keep a constant temperature of 60°C and stir until the solvent is completely evaporated to dryness;

[0052] (4) Put the powder obtained in step (3) into a muffle furnace for calcination at 550° C. for 6 hours to remove the surfactant;

[0053] (5) Grind the powder obtained in step (4) and put it into a tube furnace, inject ammonia gas with a volume flow rate of 10 sccm, and heat-treat at 550°C for 12 hours to obtain InNi 3 N-type metal nitride ele...

Embodiment 3

[0056] InNi 3 The preparation of N-type metal nitride catalyst specifically comprises the following steps:

[0057] (1) Weigh 0.5mmol of In(Ac) respectively 3 , 0.15mmol of Ni(Ac) 2 4H 2 O solid and 0.25g of P123 and F127 were mixed in 15mL of deionized water and ultrasonicated for 3 hours;

[0058] (2) adding in step (1) gained dispersion liquid, the mass fraction that needs to generate indium-nickel hydroxide completely is the ammoniacal liquor of 25%;

[0059] (3) Transfer the mixed solution obtained in step (2) to an oil bath, keep a constant temperature of 80°C and stir until the solvent is completely evaporated to dryness;

[0060] (4) Put the powder obtained in step (3) into a muffle furnace for calcination at 600° C. for 6 hours to remove the surfactant;

[0061] (5) Grind the powder obtained in step (4) and put it into a tube furnace, inject ammonia gas with a volume flow rate of 30 sccm, and heat-treat at 575°C for 12 hours to obtain InNi 3 N-type metal nitride...

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Abstract

The invention discloses an anti-perovskite nitride InNi3N hydrogen evolution electrocatalytic material, a preparation method and an application thereof. In the method, indium and nickel precursors, and a triblock copolymer templating agent are dissolved in water, and the pH of the indium and nickel hydroxide precipitates are obtained by dropwise addition of ammonia water to adjust the pH to alkalescence. The solvent is evaporated to obtain solid powder, calcination and nitriding treatment can be carried out, and the InNi3N hydrogen evolution electrocatalytic material having a pore structure isobtained. The InNi3N material prepared by the invention has good chemical stability, high electrical conductivity and specific surface area. More importantly, the compound has excellent hydrogen evolution properties. The InNi3N material of the invention has the advantages that the preparation method is simple, and control of the process is easy; Compared to a Pt-based precious metal hydrogen evolution electrocatalyst, the InNi3N greatly reduces the use of precious metals and reduces the cost of the catalyst, On the other hand, the synthesis method of the present invention is simple and the process is easy to control, and the method is easy to realize large-scale preparation.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic materials and clean energy, and specifically relates to an anti-perovskite nitride InNi 3 N hydrogen evolution electrocatalytic material and its preparation method and application. Background technique [0002] With the increasing energy crisis and environmental pollution, it is imperative to develop new clean energy technologies and realize the transition from traditional energy to new energy. As a high-energy and non-polluting fuel, hydrogen is currently one of the cleanest and most efficient energy sources, and the electrocatalytic hydrogen evolution reaction (HER) is an important method for producing hydrogen and an important technology for sustainable development. means. It is very important to develop high-performance HER electrocatalysts to accelerate the large-scale development of the hydrogen production industry. Currently, Pt and its alloys are the most active catalysts for H...

Claims

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Application Information

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IPC IPC(8): B01J27/24C25B1/02C25B11/06
CPCC25B1/02B01J27/24C25B11/075B01J35/33
Inventor 杜丽吕梦媛崔志明张嘉熙
Owner SOUTH CHINA UNIV OF TECH