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Cobalt zinc bimetallic sulfide based composite electrocatalyst, and preparation method and applications thereof

An electrocatalyst and bimetallic technology, applied in the field of electrocatalysis, can solve the problems of less surface active sites and reduced specific surface area, and achieve outstanding stability, increased specific surface area, and environmental friendliness.

Inactive Publication Date: 2019-11-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, LDH is prone to layered accumulation, and the specific surface area is reduced, resulting in fewer surface active sites.

Method used

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  • Cobalt zinc bimetallic sulfide based composite electrocatalyst, and preparation method and applications thereof
  • Cobalt zinc bimetallic sulfide based composite electrocatalyst, and preparation method and applications thereof
  • Cobalt zinc bimetallic sulfide based composite electrocatalyst, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Preparation of cobalt-zinc bimetallic sulfide / nickel-iron layered double hydroxide / nickel foam electrocatalyst (ZCS / NFLDH / NF) based on nickel foam (NF):

[0032] (1) The cut nickel foam was ultrasonically cleaned with 3M hydrochloric acid, deionized water, acetone and ethanol in sequence for 30 minutes, and then vacuum-dried at 60° C. for 12 hours.

[0033] (2) Weigh 1mmol Zn(NO 3 ) 2 ·6H 2 O, 2mmol Co(NO 3 ) 2 ·6H 2 O, 2 mmol NH 4 F and 5mmol urea, add 35mL deionized water, stir for 5 minutes to a clear solution; put 2cm×5cm foam nickel into the solution, transfer to a 50mL reaction kettle, 120°C hydrothermal reaction for 5h, after the reaction is over; take out the foam Nickel A, washed with water and alcohol, dried at 60°C for 12h.

[0034] Weigh 0.3g Na 2 S·9H 2 O, add 60ml of deionized water, stir for 10min to a clear solution, add the above-mentioned nickel foam A, transfer the solution to a 100mL reactor, and conduct a hydrothermal reaction at 180°C for 6...

Embodiment 2

[0037] The preparation method of the electrocatalytic material is basically the same as in Example 1, except that the hydrothermal time in step (3) is changed to 36 h. The rest of the conditions remain unchanged. The material is named ZCS / NFLDH / NF-2.

Embodiment 3

[0039] The preparation method of the electrocatalytic material is basically the same as that of Example 1, the difference is that the Ni(NO 3 ) 3 9H 2 O was changed to 6 mmol. The rest of the conditions remain unchanged. The material is named ZCS / NFLDH / NF-3.

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Abstract

The invention belongs to the technical field of electrocatalysis, and discloses a cobalt zinc bimetallic sulfide based composite electrocatalyst, and a preparation method and applications thereof, andmore specifically relates to a cobalt zinc bimetallic sulfide / nickel iron layered bimetallic hydroxide / foam nickel composite electrocatalyst, and a preparation method and applications thereof. The cobalt zinc bimetallic sulfide / nickel iron layered bimetallic hydroxide / foam nickel composite electrocatalyst is prepared through three-step hydro-thermal method, is low in charge transfer resistance and hydrogen evolution reaction barrier, possesses excellent performance in electrocatalysis hydrogen evolution reaction, is low in cost, simple in operation and technology, and excellent in catalytic performance, and base application research on the material kind in electrocatalysis field is realized.

Description

technical field [0001] The invention belongs to the field of electrocatalysis, and relates to a cobalt-zinc bimetallic sulfide-based composite electrocatalyst and its preparation method and application, in particular to a high-performance electrochemical full-splitting cobalt-zinc bimetallic sulfide / nickel-iron layered electrocatalyst Preparation method and application of double metal hydroxide / nickel foam composite electrocatalyst. [0002] technical background [0003] Due to the irrational use of fossil fuels, global warming, ecosystem destruction and energy crisis have become the three major problems in the world today. Therefore, it is very urgent to find an environmentally friendly and sustainable energy alternative. As a clean energy without any pollution, hydrogen is expected to be the most effective substitute for fossil fuels. Electrochemical water splitting to produce hydrogen (hydrogen evolution reaction, HER) has great application prospects in the development o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J35/10B01J37/10B01J37/06C25B11/06C25B1/04
CPCB01J27/043B01J37/10B01J37/06C25B11/04C25B1/04B01J35/33B01J35/61Y02E60/36
Inventor 姜德立朱建军权彪李娣刘陈晨
Owner JIANGSU UNIV
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