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Preparation method of nickel-tungsten composite electrode and application of nickel-tungsten composite electrode in electrocatalytic oxidation

A composite electrode, nickel-tungsten technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., to achieve the effect of high conversion rate of raw materials, wide source of raw materials, and simple operation

Pending Publication Date: 2022-07-12
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the electrocatalytic oxidation of HMF to prepare FDCA using nickel-tungsten oxide composite catalysts.

Method used

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  • Preparation method of nickel-tungsten composite electrode and application of nickel-tungsten composite electrode in electrocatalytic oxidation
  • Preparation method of nickel-tungsten composite electrode and application of nickel-tungsten composite electrode in electrocatalytic oxidation
  • Preparation method of nickel-tungsten composite electrode and application of nickel-tungsten composite electrode in electrocatalytic oxidation

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Experimental program
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Embodiment 1

[0037] like figure 1 As shown in the present embodiment, a method for preparing a nickel-tungsten electrode, the specific operations are as follows:

[0038] (1) Pretreatment of carbon paper: the used hydrophilic carbon paper is washed with ethanol and water for many times, and then dried in air;

[0039] (2) Electrodeposition of nickel: Electrodeposition was carried out in a 100ml beaker using a two-electrode system with carbon paper as the cathode and carbon rod as the anode. The nickel deposition electrolyte is: 6 mmol nickel sulfate hexahydrate, 2.40 g boric acid, 8.82 g sodium citrate dihydrate, 1.80 g sodium chloride and 60 mL ultrapure water are dissolved in a beaker, and sulfuric acid is added to adjust the pH of the electrolyte to 6.0. Deposition current is -200mAcm at 25°C -2 , and the deposition time was 30 min. Then rinse several times with water and finally dry;

[0040] (3) Electrodeposition of tungsten: Electrodeposition was carried out in a 100ml beaker, us...

Embodiment 2

[0046] like figure 1 As shown in the present embodiment, a method for preparing a nickel-based electrode material, the specific operations are as follows:

[0047] (1) Pretreatment of carbon paper: the used hydrophilic carbon paper is washed with ethanol and water for many times, and then dried in air;

[0048] (2) Electrodeposition of nickel: Electrodeposition was carried out in a 100ml beaker using a two-electrode system with carbon paper as the cathode and carbon rod as the anode. The nickel deposition electrolyte is: 6 mmol nickel sulfate hexahydrate, 2.40 g boric acid, 8.82 g sodium citrate dihydrate, 1.80 g sodium chloride and 60 mL ultrapure water are dissolved in a beaker, and sulfuric acid is added to adjust the pH of the electrolyte to 6.0. Deposition current is -0.20Acm at 25°C -2 , and the deposition time was 30 min. Then rinse several times with water and finally dry;

[0049] (3) Activation of the electrode material: using the admiral electrochemical workstat...

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Abstract

The invention belongs to the technical field of material science and the field of energy conservation and environmental protection, and particularly relates to a preparation method of a nickel-tungsten composite electrode and application of the nickel-tungsten composite electrode in electrocatalytic oxidation. The nickel-tungsten composite electrode is prepared by adopting a simple step-by-step electro-deposition method, the electrode system takes tungsten-doped nickel as a catalytic active center, and the nickel-tungsten composite electrode can efficiently oxidize water or biomass derivative platform compounds in an alkaline medium, so that the overall overpotential in the process of producing hydrogen by electrolyzing water is greatly reduced, the overall charge efficiency in the process is improved, and the hydrogen production efficiency is improved. And good stability is shown. The raw materials required by the preparation process are wide in source, low in price, simple to operate, mild in reaction condition, clean and environment-friendly, the reaction cost can be effectively reduced, and environmental pollution and consumption of rare metals are avoided.

Description

technical field [0001] The invention relates to the technical field of material technology and electrode preparation, in particular to a preparation method of a nickel-tungsten composite electrode and its application in electrocatalytic oxidation. Background technique [0002] The huge consumption of fossil energy and the serious environmental and climate problems brought about by it have prompted the energy structure of today's world to change from a single fossil energy to a diversified energy structure including renewable energy and nuclear energy. On the one hand, the use of renewable electricity to drive water electrolysis technology has received extensive research attention in the production of clean and sustainable hydrogen energy. In the process of water electrolysis, the oxygen evolution reaction (OER) of the anode usually involves a complex four-electron transfer process, which makes the kinetics of the oxygen evolution reaction sluggish and seriously increases the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/061C25B11/091C25B1/04
CPCC25B11/061C25B11/091C25B1/04Y02P20/133
Inventor 王发楠徐刚陈晨钰
Owner FUJIAN UNIV OF TECH
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