Preparation method of layered ferronickel hydroxide electrode

A hydroxide, nickel-iron technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problem of poor chemical stability and activity of layered nickel-iron hydroxide, and limit the industrial utilization of layered nickel-iron hydroxide, etc. problems, to achieve the effect of superior electrocatalytic activity and stability, good sample activity, and strong controllability

Active Publication Date: 2017-02-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical stability and activity of layered nickel-iron hydroxides synthesized by solvother

Method used

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  • Preparation method of layered ferronickel hydroxide electrode
  • Preparation method of layered ferronickel hydroxide electrode
  • Preparation method of layered ferronickel hydroxide electrode

Examples

Experimental program
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Example Embodiment

[0033] Example 1

[0034] 1) Put 2cm×5cm foamed copper in concentrated hydrochloric acid for ultrasonic cleaning for 5 minutes, rinse the foamed copper with deionized water repeatedly, and then place it in deionized water for ultrasonic cleaning for 5 minutes;

[0035] 2) Prepare a solution containing iron salt, nickel salt and urea, where the iron salt concentration is: 18mmol / L, the nickel salt concentration is: 12mmol / L, the urea concentration is: 60mmol / L; where the iron salt is iron sulfate; The nickel salt is nickel sulfate.

[0036] 3) Take an appropriate amount of the above solution and place it in a 30mL stainless steel reactor with a polytetrafluoroethylene lining and put it into the foamed copper that has been cleaned in step 1). Place the hydrothermal kettle in an oven at 120°C to react for 12 hours, cool to room temperature naturally, and rinse repeatedly with deionized water and absolute ethanol, and use N 2 Purging and drying to obtain NiFe-LDH electrode; wherein the ...

Example Embodiment

[0040] Example 2

[0041] 1) Put 2cm×5cm foam nickel in concentrated hydrochloric acid for ultrasonic cleaning for 5 minutes, rinse the foam nickel with deionized water repeatedly, and then put it in deionized water for ultrasonic cleaning for 5 minutes;

[0042] 2) Prepare a solution containing iron salt, nickel salt and urea, where the iron salt concentration is: 18mmol / L, the nickel salt concentration is: 12mmol / L, the urea concentration is: 60mmol / L; where the iron salt is ferric chloride ; The nickel salt is nickel chloride.

[0043] 3) Take an appropriate amount of the above solution and place it in a 30mL stainless steel reactor with a polytetrafluoroethylene lining and put it into the foamed nickel that has been cleaned in step 1). Place the hydrothermal kettle in an oven at 120°C to react for 12 hours, naturally cool to room temperature, and rinse repeatedly with deionized water and absolute ethanol, and use N 2 Purging and drying to obtain NiFe-LDH electrode; wherein the v...

Example Embodiment

[0046] Example 3

[0047] 1) Put 2cm×5cm foamed copper in concentrated hydrochloric acid for ultrasonic cleaning for 5 minutes, rinse the foamed copper with deionized water repeatedly and then put it in deionized water for ultrasonic cleaning for 5 minutes;

[0048] 2) Prepare a solution containing iron salt, nickel salt and urea, where the iron salt concentration is: 18mmol / L, the nickel salt concentration is: 12mmol / L, the urea concentration is: 60mmol / L; where the iron salt is iron acetate; The nickel salt is nickel acetate.

[0049] 3) Take an appropriate amount of the above solution and place it in a 30mL stainless steel reactor with a polytetrafluoroethylene lining and put it into the foamed copper that has been cleaned in step 1). Place the hydrothermal kettle in an oven at 120°C to react for 12 hours, cool to room temperature naturally, and rinse repeatedly with deionized water and absolute ethanol, and use N 2 Purging and drying to obtain NiFe-LDH electrode; wherein the vol...

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Abstract

The invention discloses a preparation method of a layered ferronickel hydroxide electrode. The preparation method comprises the following steps: preparing a solution containing a ferric salt, a nickel salt and urea, wherein the concentration of the ferric salt is 1-100mmol/L, the concentration of the nickel salt is 1-100mmol/L and the concentration of the urea is 2-200mmol/L; and placing a substrate into the solution containing the ferric salt, the nickel salt and the urea, then placing the substrate in a hydrothermal reactor at the temperature of 60-180 DEG C, keeping the temperature for 1-20h, then washing and drying the substrate, and carrying out plasma treatment or high temperature calcination treatment in a protective atmosphere finally to obtain the layered ferronickel hydroxide electrode. The preparation method, is lower in reaction temperature, short in reaction time, simple in preparation process, strong in controllability and good in repeatability, improves the production efficiency, lowers the production cost, is green and environmental friendly and can effectively solve the problem of environmental pollution without participation of an organic solvent and a toxic chemical reagent in the reaction process.

Description

technical field [0001] The application belongs to the field of thin film electrode preparation, in particular to a method for preparing a layered nickel-iron hydroxide electrode. Background technique [0002] As a new type of functional material, nickel-iron hydroxide with a layered structure has high specific surface area, good thermal and electrical conductivity, good intrinsic damping, abundant reserves of required elements, and the sheets can be detached and reassembled. Excellent characteristics such as electrocatalytic hydrogen production and oxygen production electrodes. Nickel iron hydroxide is used in gas storage, catalyst carrier, lithium ion secondary battery electrode material, lightweight structure material, electrocatalytic water splitting material, electrocatalytic carbon dioxide reduction material, photocatalytic co-catalyst material, supercapacitor electrode material and fuel Many new technology fields such as batteries have huge potential application value...

Claims

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Application Information

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IPC IPC(8): C25B11/06
CPCC25B11/075
Inventor 沈少华王蒙桑杰·马图拉托马斯·费舍尔
Owner XI AN JIAOTONG UNIV
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