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Two-step oxidation synthesized water electrolysis anode and preparation method thereof

A technology for oxidative synthesis and electrolysis of water, applied in electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of industrial production difficulties, high energy consumption of oxygen evolution electrodes, etc., and achieve the effects of low cost, simple preparation method, and rich sources of raw materials

Pending Publication Date: 2020-04-03
南通安思卓新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a two-step oxidation synthesis electrolytic water anode to solve the problems of high energy consumption and difficulty in industrial production in the preparation of oxygen evolution electrodes in the above background technology

Method used

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  • Two-step oxidation synthesized water electrolysis anode and preparation method thereof
  • Two-step oxidation synthesized water electrolysis anode and preparation method thereof
  • Two-step oxidation synthesized water electrolysis anode and preparation method thereof

Examples

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Embodiment 1

[0029] Embodiment 1: the present invention provides a kind of technical scheme:

[0030] In-Situ Chemical Oxidation Electrolyzed Water Anode with Metallic Nickel Mesh

[0031] Step A: Surface treatment of metal nickel mesh

[0032] Put the cut metal-based electrode into acetone and ethanol solution for ultrasonic cleaning for 5-20 minutes to remove the grease layer on the metal surface; then place the bottom of the metal nickel mesh electrode in a hydrochloric acid solution with a concentration of 0.5-6 moles per liter for ultrasonic cleaning 5 to 20 minutes, then rinse with deionized water to remove the oxide layer on the metal surface;

[0033] Step B: Chemical Oxidation of Metallic Nickel Mesh

[0034] Put the metal nickel mesh after cleaning into the mixed solution of ammonium thiosulfate containing 50 millimoles per liter and 1 mole per liter of hydrochloric acid at normal temperature, and let it stand for 3 hours;

[0035] Three-electrode test of oxygen evolution perf...

Embodiment 2

[0039] Embodiment 2: the present invention provides a kind of technical scheme:

[0040] Two-step Oxidation Electrolyzed Water Anode with Metallic Nickel Mesh

[0041] Step A: Surface treatment of metal nickel mesh

[0042] Put the cut metal-based electrode into acetone and ethanol solution for ultrasonic cleaning for 5-20 minutes to remove the grease layer on the metal surface; then put the metal nickel mesh electrode into the hydrochloric acid solution with a concentration of 0.5-6 moles per liter and ultrasonically clean it for 5 minutes. ~20 minutes, then rinse with deionized water to remove the oxide layer on the metal surface;

[0043] Step B: Chemical Oxidation of Metallic Nickel Mesh

[0044] Put the metal nickel mesh after cleaning into the mixed solution of ammonium thiosulfate containing 50 millimoles per liter and 1 mole per liter of hydrochloric acid at normal temperature, and let it stand for 3 hours;

[0045] Step C: Electrochemical anodization of metallic ni...

Embodiment 3

[0051] Embodiment 3: the present invention provides a kind of technical scheme:

[0052] Step A: Surface treatment of metallic nickel foam

[0053] Put the cut metal foam nickel electrode into acetone and ethanol solution for ultrasonic cleaning for 5-20 minutes to remove the grease layer on the metal surface; then place the metal foam nickel electrode in a hydrochloric acid solution with a concentration of 0.5-6 moles per liter for ultrasonic cleaning 5 to 20 minutes, then rinse with deionized water to remove the oxide layer on the metal surface;

[0054] Step B: Chemical Oxidation of Metallic Nickel Foam

[0055] Put the metal foam nickel after cleaning into the hydrochloric acid mixed solution containing 50 millimoles per liter of ammonium thiosulfate and 1 mole per liter of hydrochloric acid at normal temperature, and let it stand for 3 hours;

[0056] Step C: Electrochemical anodization of metallic nickel foam

[0057] The metal foamed nickel obtained in step B is used...

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Abstract

The invention belongs to the technical field of water electrolysis anode material research, and especially relates to a two-step oxidation synthesized water electrolysis anode and a preparation methodthereof. The preparation method comprises following steps: firstly, an oxide layer and grease substances on the surface of a nickel-based metal are removed through mechanical shearing, oil removal (acetone washing and ethanol washing) and acid pickling; immersing the cleaned electrode material into a prepared acidic solution containing an oxidizing agent for oxidation to obtain a nickel oxidationstate substance layer electrode; oxidizing a nickel-based surface layer substance into an oxide or a hydroxide of nickel; then, carrying out second-step oxidation in an electrolyte containing ferrousions by adopting an electrochemical anodic oxidation method so as to introducing iron element in changing nickel valence state and forming a nickel-iron oxide or hydroxide electrode. The anode catalytic active electrode prepared by adopting the method is low in overpotential, capable of effectively reducing water electrolysis energy consumption, simple in process, relatively low in cost and capable of being widely applied to the alkaline water electrolysis industry.

Description

technical field [0001] The invention relates to the technical field of electrolytic water anode material research, in particular to a two-step oxidation-synthesized electrolytic water anode and a preparation method thereof. Background technique [0002] With the rapid depletion of fossil fuels and the ensuing increasingly serious environmental pollution, it is imminent to develop green and renewable energy to cope with this situation. Hydrogen energy with high energy density is considered as the most ideal alternative energy due to its purity and sustainability. Water splitting technology provides an efficient and sustainable way to develop a hydrogen economy. The oxidation half-reaction of water splitting is called oxygen evolution reaction. Unfortunately, the oxygen evolution reaction is a kinetically sluggish reaction via a four-electron redox step, which especially limits its efficiency in water electrolysis because of it, which usually requires a high overpotential to...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/03C25B1/04C23C28/04
CPCC23C28/04C25B1/04C25B11/031C25B11/051C25B11/057C25B11/077Y02E60/36
Inventor 李海明高小平李宝同李德润倪海宁
Owner 南通安思卓新能源有限公司
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