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Anode catalyst for electrolyzing water and preparation method thereof

A technology of catalyst and electrolysis of water, applied in the field of electrocatalysis, to achieve the effect of improving catalytic activity, excellent electrocatalytic oxygen production performance, and large contact area

Active Publication Date: 2020-09-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now with the shortage of energy, electrolysis of water to produce hydrogen is a new trend to change environmental and energy issues, but now the electrolysis of water to produce hydrogen lacks low-cost, good stability, and relatively high catalytic activity catalysts

Method used

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  • Anode catalyst for electrolyzing water and preparation method thereof
  • Anode catalyst for electrolyzing water and preparation method thereof
  • Anode catalyst for electrolyzing water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Dissolve 95.172mg of cobalt chloride hexahydrate, 45.126mg of stannous chloride and 264.69mg of sodium citrate dihydrate in 20mL of deionized water, add 20mL of potassium ferricyanide aqueous solution while stirring to obtain a mixed solution, and let it stand for 48h , the product was centrifuged, washed, and vacuum-dried for 24 hours to obtain CoSnFePBA-2:1.

Embodiment 2

[0031] Dissolve 142.758mg of cobalt chloride hexahydrate, 45.126mg of stannous chloride and 264.69mg of sodium citrate dihydrate in 20mL of deionized water, add 20mL of potassium ferricyanide aqueous solution while stirring to obtain a mixed solution, and let it stand for 24h , the product was centrifuged, washed, and vacuum-dried for 24 hours to obtain CoSnFePBA-5:1.

Embodiment 3

[0033] Dissolve 114.2064mg of cobalt chloride hexahydrate, 27.0756mg of stannous chloride and 264.69mg of sodium citrate dihydrate in 20mL of deionized water, add 20mL of potassium ferricyanide aqueous solution while stirring to obtain a mixed solution, and let it stand for 48h , the product was centrifuged, washed, and vacuum-dried for 24 hours to obtain CoSnFePBA-4:1.

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Abstract

The invention discloses an anode catalyst for electrolyzing water and a preparation method thereof. The preparation method comprises the following steps: synthesizing a PBA cube and a chamfered polyhedron by adopting a precipitation method, by adopting different molar ratios of cobalt and tin, acquiring a chamfered polyhedron with the optimal morphology, namely the anode catalyst for electrolyzingwater. The preparation method disclosed by the invention is synthesized at normal temperature, easy to control, low in cost of used raw materials, easy to obtain a target product and simple and feasible to operate, and the obtained PBA is good in morphology and easy to regulate and control, and has excellent water electrolysis OER performance.

Description

technical field [0001] The invention relates to the field of electrocatalysis, in particular to an anode catalyst for electrolyzing water and a preparation method thereof. Background technique [0002] Prussion Blue Analogues (PBAs for short) are an important part of many MOFs materials, and they are an important class of coordination compounds. In the Prussian blue unit cell, transition metal particles occupy two different positions, which can be replaced by other transition metals, resulting in a diversity of Prussian blue-like particles, these transition metals include iron, cobalt, nickel, zinc and copper Wait. In addition, a small amount of noble metal ions can be used to replace the transition metal at the position of the transition metal ion in the framework structure, keeping the framework structure of the Prussian blue particles unchanged. [0003] The synthesis method of Prussian blue analogues is simple, but the specific surface area of ​​traditional cubes is re...

Claims

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Application Information

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IPC IPC(8): B01J31/18B01J35/10C25B1/04C25B11/06
CPCB01J31/1805C25B1/04B01J35/33B01J35/61Y02E60/36
Inventor 冯永强董沛沛黄剑锋曹丽云王潇冯伟航陈俊生王海
Owner SHAANXI UNIV OF SCI & TECH
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