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Electrocatalyst, preparation method thereof, electrode and water decomposition system

An electrocatalyst and electrode technology, applied in the field of materials, can solve problems such as the need for improvement of electrocatalysts

Active Publication Date: 2019-07-26
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the related technologies of existing electrocatalysts still need to be improved.

Method used

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  • Electrocatalyst, preparation method thereof, electrode and water decomposition system
  • Electrocatalyst, preparation method thereof, electrode and water decomposition system
  • Electrocatalyst, preparation method thereof, electrode and water decomposition system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] This embodiment provides a method for preparing an electrocatalyst, comprising the following steps:

[0094] 1) Place the foamed nickel in a hydrochloric acid solution with a concentration of 3mol / L, and ultrasonicate for 15min to remove the surface oxide layer, take it out and wash it with deionized water, then put it in acetone, and ultrasonically for 15min; Wash with water, dry in an oven at 60°C for 3 hours, and set aside;

[0095] 2) Dissolve 0.6mmol nickel nitrate and 0.9mmol sodium citrate in 20mL deionized water; 3 [Co(CN) 6 ] 2 Dissolve in another 20 mL of deionized water, then mix the two and suspend the nickel foam obtained in step 1) in the solution, and stir at 600 r / min for 15 hours.

[0096] 3) After mixing 14mL N,N-dimethylformamide, 1mL absolute ethanol, and 1mL deionized water, add 0.18g sodium sulfide, 0.1491g ferrous chloride and 0.08g terephthalic acid, and stir until completely dissolved .

[0097] 4) Place the solution obtained in step 3) in ...

Embodiment 2

[0108] This embodiment provides a method for preparing an electrocatalyst, comprising the following steps:

[0109] 1) Place the foamed nickel in a hydrochloric acid solution with a concentration of 3mol / L, and ultrasonicate for 15min to remove the surface oxide layer, take it out and wash it with deionized water, then put it in acetone, and ultrasonically for 15min; Wash with water, dry in an oven at 60°C for 3 hours, and set aside;

[0110] 2) Dissolve 0.6mmol nickel nitrate and 0.9mmol sodium citrate in 20mL deionized water; 3 [Co(CN) 6 ] 2 Dissolve in another 20 mL of deionized water, then mix the two and suspend the nickel foam obtained in step 1) in the solution, and stir at 600 r / min for 15 hours.

[0111] 3) After mixing 14mL N,N-dimethylformamide, 1mL absolute ethanol, and 1mL deionized water, add 0.15g sodium sulfide, 0.1491g ferrous chloride and 0.08g terephthalic acid, and stir until completely dissolved .

[0112] 4) Place the solution obtained in step 3) in ...

Embodiment 3

[0115] This embodiment provides a method for preparing an electrocatalyst, comprising the following steps:

[0116] 1) Place the foamed nickel in a hydrochloric acid solution with a concentration of 3mol / L, and ultrasonicate for 15min to remove the surface oxide layer, take it out and wash it with deionized water, then put it in acetone, and ultrasonically for 15min; Wash with water, dry in an oven at 60°C for 3 hours, and set aside;

[0117] 2) Dissolve 0.6mmol nickel nitrate and 0.9mmol sodium citrate in 20mL deionized water; 3 [Co(CN) 6 ] 2 Dissolve in another 20 mL of deionized water, then mix the two and suspend the nickel foam obtained in step 1) in the solution, and stir at 600 r / min for 15 hours.

[0118] 3) After mixing 14mL N,N-dimethylformamide, 1mL absolute ethanol, and 1mL deionized water, add 0.21g sodium sulfide, 0.1491g ferrous chloride and 0.08g terephthalic acid, and stir until completely dissolved .

[0119] 4) Place the solution obtained in step 3) in ...

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Abstract

The invention provides an electrocatalyst, a preparation method thereof, an electrode and a water decomposition system. The electrocatalyst comprises metal sulfide nanowires and a complex formed by iron, cobalt, nickel, and terephthalic acid, and the complex is attached to the outer surfaces of the metal sulfide nanowires. The electrocatalytic oxygen evolution reaction of the electrocatalyst is high in activity and strong in stability, a preparation process is simple and controllable, the cost is low, and industrialized production is easy to realize.

Description

technical field [0001] The invention relates to the technical field of materials, in particular, to an electrocatalyst and a preparation method thereof, an electrode and a water splitting system. Background technique [0002] With environmental pollution and energy shortages associated with traditional fossil fuels, sustainable energy harvesting models have received much attention. Therefore, the development of clean and sustainable new energy has been put on the agenda. The production of oxygen and hydrogen by electrolysis of water can effectively alleviate the current energy crisis. However, the rate of the entire water-splitting system is hampered by the slow water oxidation reaction in the anode, which seriously hinders the improvement of water-splitting efficiency. Therefore, the development of highly active and low-cost electrocatalysts for accelerating water oxidation reactions is highly desired, but the current electrocatalysts for electrocatalytic water splitting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C25B11/06C25B1/04
CPCB01J31/28C25B1/04B01J2531/842B01J2531/845B01J2531/847B01J2531/0213C25B11/095B01J35/33Y02E60/36
Inventor 林雨青苑彬彬李长青刘懿文
Owner CAPITAL NORMAL UNIVERSITY
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