Method for preparing Ni/CeO2 composite hydrogen evolution electrode

A hydrogen evolution electrode and electrodeposition technology, applied in electrodes, electrolytic coatings, electrolytic processes, etc., can solve problems such as hindering metal ions, affecting the performance and stability of catalytic hydrogen evolution, and micro-cracks, improving hydrogen evolution performance, and overcoming conventional composite electrodes. effect of deposition

Inactive Publication Date: 2015-08-19
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when hydrogen evolution composite materials are prepared by electrodeposition, hydrogen evolution reaction will inevitably occur on the cathode. If the generated hydrogen bubbles are adsorbed on the surface of the electrode and cannot be detached in time, it will hinder the deposition process of metal ions reaching the electrode surface and cause micropores in the coating. , Microcracks and other defects affect its catalytic hydrogen evolution performance and stability

Method used

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  • Method for preparing Ni/CeO2 composite hydrogen evolution electrode
  • Method for preparing Ni/CeO2 composite hydrogen evolution electrode
  • Method for preparing Ni/CeO2 composite hydrogen evolution electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Pretreatment of substrate

[0031] Before electrodeposition, the metal copper foil substrate is subjected to mechanical grinding, alkali washing to degrease, weak acid etching, and then washed and dried for use.

[0032] (2) Preparation of plating solution

[0033] Each liter of plating solution contains 350g of nickel sulfamate, 20g of nickel chloride, 30g of ammonium chloride, 0.1g of sodium lauryl sulfate, and CeO with a particle size of 5 μm 2 The particles are 9g, and the pH value of the plating solution is 3.5.

[0034] (3)CeO 2 particle dispersion

[0035] CeO 2 The particles were added to the plating solution, then sonicated for 3 h, followed by stirring with a magnetic stirrer at 600 rpm for 24 h to make the CeO 2 Particles are evenly dispersed in the bath to reduce agglomeration.

[0036] (4) Preparation of Ni / CeO by high-gravity electrodeposition 2 Compound electrode

[0037] The high-gravity electrodeposition process is carried out in a cylindric...

Embodiment 2

[0041] (1) Pretreatment of substrate

[0042] Before electrodeposition, the metal copper foil substrate is subjected to mechanical grinding, alkali washing to degrease, weak acid etching, and then washed and dried for use.

[0043] (2) Preparation of plating solution

[0044] Each liter of plating solution contains 350g of nickel sulfamate, 20g of nickel chloride, 30g of ammonium chloride, 0.1g of sodium lauryl sulfate, and CeO with a particle size of 5 μm 2 The particles are 9g, and the pH value of the plating solution is 3.5.

[0045] (3)CeO 2 particle dispersion

[0046] CeO 2 The particles were added to the plating solution, then sonicated for 3 h, followed by stirring with a magnetic stirrer at 600 rpm for 24 h to make the CeO 2 Particles are evenly dispersed in the bath to reduce agglomeration.

[0047] (4) Preparation of Ni / CeO by high-gravity electrodeposition 2 Compound electrode

[0048] The high-gravity electrodeposition process is carried out in a cylindric...

Embodiment 3

[0052] (1) Pretreatment of substrate

[0053] Before electrodeposition, the metal copper foil substrate is subjected to mechanical grinding, alkali washing to degrease, weak acid etching, and then washed and dried for use.

[0054] (2) Preparation of plating solution

[0055] Each liter of plating solution contains 350g of nickel sulfamate, 20g of nickel chloride, 30g of ammonium chloride, 0.1g of sodium lauryl sulfate, and CeO with a particle size of 2μm 2 Particles 7g, pH value of the plating solution is 3.5.

[0056] (3)CeO 2 particle dispersion

[0057] CeO 2 The particles were added to the plating solution, then sonicated for 3 h, followed by stirring with a magnetic stirrer at 600 rpm for 24 h to make the CeO 2 Particles are evenly dispersed in the bath to reduce agglomeration.

[0058] (4) Preparation of Ni / CeO by high-gravity electrodeposition 2 Compound electrode

[0059] The high-gravity electrodeposition process is carried out in a cylindrical reactor with a...

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Abstract

The invention relates to a method for preparing a Ni/CeO2 composite hydrogen evolution electrode, which is characterized in that 0.1-20g CeO2 particles with particle size being 10nm-5mum are added in a plating liquid for dispersion treatment, the processed metal copper foil substrate is fixed in a cylindraceous reactor as an electrodeposition cathode for performing electrodeposition, a pure nickel pipe positioned at center axis of the cylindraceous reactor is taken as an electrodeposition anode, temperature is 45 DEG C, current density is 3A/dm<2>, the electrodeposition time is 1 hour, the rotating speed of the cylindraceous reactor is adjusted to obtain a high gravity field with different intensity, high gravity field intensity G scope is 95-1000g, and the direction of the high gravity field is perpendicular to cathode surface. According to the invention, bubble disengaging from an electrolyte during an electrodeposition process is effectively promoted, ion migration and mass transfer process are accelerated, composite particle content in a coating is increased, coating crystal grain is refined, so that the catalyzed hydrogen evolution performance of the prepared Ni/CeO2 composite hydrogen evolution electrode is obviously increased.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis, in particular to a method for preparing a hydrogen evolution electrode. technical background [0002] Energy is the driving force for social development and the progress of human civilization. With the continuous development of science and technology and economy, human demand for energy continues to increase. Traditional primary energy sources such as coal, oil, and natural gas are facing a crisis of depletion. As a clean, efficient, and renewable green energy, hydrogen energy has attracted extensive attention from researchers, and it is regarded as the most ideal new energy to replace fossil energy. However, at present, more than 90% of hydrogen is produced by fossil fuels. This kind of hydrogen production method is not sustainable and cannot fundamentally solve the energy crisis. Hydrogen production by electrolysis of water is a sustainable hydrogen production metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25B11/04C25B1/04
CPCY02E60/36
Inventor 邵光杰陈周昊马志鹏王桂玲宋建军
Owner YANSHAN UNIV
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