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Nano-porous material anode catalyst and preparation method thereof

A nanoporous, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of difficult to achieve catalytic effect, high OER overpotential, catalytic activity Problems such as fewer sites

Pending Publication Date: 2020-10-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrogen production from water electrolysis can only be fully carried out under the action of a catalyst. The development of an efficient electrocatalyst is currently a very challenging difficulty, mainly because the electrolysis of water is divided into two steps, the hydrogen evolution reaction (HER) and the oxygen evolution reaction ( OER), HER involves the transfer of two electrons, while OER involves the transfer of four electrons. The traditional catalyst has a small specific surface area and fewer catalytic active sites, which makes the OER overpotential higher, and it is difficult to achieve a good catalytic effect.

Method used

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  • Nano-porous material anode catalyst and preparation method thereof
  • Nano-porous material anode catalyst and preparation method thereof
  • Nano-porous material anode catalyst and preparation method thereof

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Effect test

Embodiment 1

[0023] The preparation method of nanoporous material anode catalyst of the present invention, concrete steps comprise:

[0024] Step one: the Ni(NO of 0.6mmol 3 ) 2 ·6H 2 O and 0.9 mmol of TCD (sodium citrate dihydrate, the chemical formula is Na 3 C 6 h 5 o 7 2H 2 O) be dissolved in the deionized water of 20mL and form solution A, the K of 0.4mmol 3 [Fe(CN) 6 ] was dissolved in 20mL of deionized water to form solution B, then solution A was poured into solution B under vigorous stirring and continued to stir vigorously for 5min to obtain a mixture, the resulting mixture was left to stand for 20h and then centrifuged at 8000rpm / min, centrifuged After 10 minutes, the obtained precipitate was washed three times with deionized water and ethanol, and dried at 60°C for 24 hours to obtain the precursor NiFe-PBA, namely NF;

[0025] Step 2: Take 20 mg of the precursor NiFe-PBA obtained in Step 1 and disperse it in 20 mL of isopropanol to obtain a dispersion, and disperse it ...

Embodiment 2

[0032] The preparation method of nanoporous material anode catalyst of the present invention, concrete steps comprise:

[0033] Step one: the Ni(NO of 0.6mmol 3 ) 2 ·6H 2 O and 0.9 mmol of TCD (sodium citrate dihydrate, the chemical formula is Na 3 C 6 h 5 o 7 2H 2 O) be dissolved in the deionized water of 20mL and form solution A, the K of 0.4mmol 3 [Fe(CN) 6 ] was dissolved in 20mL of deionized water to form solution B, then solution A was poured into solution B under vigorous stirring and continued to stir vigorously for 5min to obtain a mixture, the resulting mixture was left to stand for 20h and then centrifuged at 8000rpm / min, centrifuged After 10 minutes, the obtained precipitate was washed three times with deionized water and ethanol, and dried at 60°C for 24 hours to obtain the precursor NiFe-PBA, namely NF;

[0034]Step 2: Take 20 mg of the precursor NiFe-PBA obtained in Step 1 and disperse it in 20 mL of isopropanol to obtain a dispersion, and disperse it u...

Embodiment 3

[0037] The preparation method of nanoporous material anode catalyst of the present invention, concrete steps comprise:

[0038] Step one: the Ni(NO of 0.6mmol 3 ) 2 ·6H 2 O and 0.9 mmol of TCD (sodium citrate dihydrate, the chemical formula is Na 3 C 6 h 5 o 7 2H 2 O) be dissolved in the deionized water of 20mL and form solution A, the K of 0.4mmol 3 [Fe(CN) 6 ] was dissolved in 20mL of deionized water to form solution B, then solution A was poured into solution B under vigorous stirring and continued to stir vigorously for 5min to obtain a mixture, the resulting mixture was left to stand for 20h and then centrifuged at 8000rpm / min, centrifuged After 10 minutes, the obtained precipitate was washed three times with deionized water and ethanol, and dried at 60°C for 24 hours to obtain the precursor NiFe-PBA, namely NF;

[0039] Step 2: Take 20 mg of the precursor NiFe-PBA obtained in Step 1 and disperse it in 20 mL of isopropanol to obtain a dispersion, and disperse it ...

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Abstract

The invention discloses a nano-porous material anode catalyst and a preparation method thereof. The preparation method comprises the specific steps that (1) Ni (NO3) 2.6 H2O, TCD and K3 [Fe (CN) 6] serve as raw materials, and NiFe-PBA is synthesized in one step through a precipitation method; (2) dispersing the obtained NiFe-PBA in isopropanol to obtain a dispersion liquid, and mixing the dispersion liquid with an isopropanol solution containing PVP to obtain a mixed solution; and (3) carrying out solvothermal treatment on the obtained mixed solution, centrifuging, washing and drying to obtainthe nano-porous material anode catalyst. The preparation method disclosed by the invention is simple in overall process, not harsh in reaction condition and suitable for large-scale mass production preparation, and the prepared nano-porous material anode catalyst has large specific surface area and multiple catalytic active sites and has excellent electro-catalytic performance.

Description

technical field [0001] The invention relates to anode catalyst technology, in particular to a nanoporous material anode catalyst and a preparation method thereof. Background technique [0002] Today's human society is facing two major problems: energy crisis and environmental pollution. The energy crisis is mainly due to the fact that the non-renewable resources (coal, oil, natural gas) we rely on are decreasing with the production and development of human society, and these non-renewable resources will produce pollutants when they are burned, thereby causing environmental pollution. So we need to find a clean and sustainable energy, and H 2 It is a clean energy carrier, and hydrogen production by water electrolysis is one of the most promising methods for preparing clean energy. However, the hydrogen production from water electrolysis can only be fully carried out under the action of a catalyst. The development of an efficient electrocatalyst is currently a very challengi...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/10C25B11/06C25B1/04
CPCB01J31/1691B01J31/1805C25B11/04C25B1/04B01J2531/842B01J2531/847B01J35/33B01J35/61Y02E60/36
Inventor 冯永强董沛沛冯伟航黄剑锋曹丽云陈俊生王海
Owner SHAANXI UNIV OF SCI & TECH
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