Iron-molybdenum doped nickel sulfide/foamed nickel electrode and preparation method and application thereof

A technology of nickel foam and nickel sulfide, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of cumbersome steps and difficulty in increasing the amount of iron doping, and achieve the goal of increasing the amount of doping, low raw material cost, and reducing the risk factor Effect

Pending Publication Date: 2022-02-08
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention discloses an iron-molybdenum-doped nickel sulfide / nickel foam electrode and its preparation method and application. The interaction between iron cations and molybdate anions makes iron-molybdenum elements work together in the hydrothermal process. Incorporated with nickel sulfide, the electrode has excellent catalytic activity and stability for HER and OER, and overcomes technical problems such as cumbersome steps and difficulty in increasing the amount of iron doping in the prior art.

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  • Iron-molybdenum doped nickel sulfide/foamed nickel electrode and preparation method and application thereof

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Embodiment 1

[0035] This embodiment provides a method for preparing an iron-molybdenum-doped nickel sulfide nickel foam electrode, and the specific steps are as follows:

[0036] Step 1: Preparation of foamed nickel: Cut the foamed nickel into a rectangle with a size of 1 cm × 4.5 cm, and place the foamed nickel in 3M HCl, absolute ethanol and deionized water for ultrasonic cleaning for 10 minutes each time; Dry in a 60°C drying oven for 3 hours, and set aside after drying.

[0037] The second step: 2 mmol FeCl 3 ·6H 2 O, 1 mmol (NH 4 ) 6 Mo 7 o 24 4H 2 O and 2.2 mmol Na 2 S was dissolved in 50 ml of deionized water and stirred at room temperature to obtain a mixed solution;

[0038] The third step: Insert the 2 pieces of nickel foam obtained in the first step into the polytetrafluoro mold base, and the nickel foam remains in a vertical state; the polytetrafluoro base and the hydrothermal solution inserted into the nickel foam are added to the hydrothermal kettle, Fasten the hydroth...

Embodiment 2

[0041] This embodiment provides a method for preparing an iron-molybdenum-doped nickel sulfide / nickel foam electrode, and the specific steps are as follows:

[0042] The first step is to prepare foamed nickel: cut the foamed nickel into a rectangle with a size of 1 cm × 4.5 cm, and place the foamed nickel in 3M HCl, absolute ethanol and deionized water for ultrasonic cleaning for 10 minutes each time; Dry in a 60°C drying oven for 3 hours, and set aside after drying.

[0043] The second step: 1.5 mmol FeCl 3 ·6H 2 O, 1.5 mmol (NH 4 ) 6 Mo 7 o 24 4H 2 O and 2.2 mmol Na 2 S was dissolved in 50 milliliters of deionized water, and a hydrothermal solution was obtained after stirring;

[0044] The third step is to insert 2 pieces of foamed nickel obtained in the first step into the polytetrafluoro mold base, and the foamed nickel remains in a vertical state; the polytetrafluoro base and the hydrothermal solution inserted into the foamed nickel are added to the hydrothermal k...

Embodiment 3

[0046] This embodiment provides a method for preparing an iron-doped nickel sulfide / foamed nickel electrode without molybdenum doping. The specific steps are as follows:

[0047] The first step is to prepare foamed nickel: cut the foamed nickel into a rectangle with a size of 1 cm × 4.5 cm, and place the foamed nickel in 3M HCl, absolute ethanol and deionized water for ultrasonic cleaning for 10 minutes each time; Dry in a 60°C drying oven for 3 hours, and set aside after drying.

[0048] The second step: 3 mmol FeCl 3 ·6H 2 O and 2.2 mmol Na 2 S was dissolved in 50 milliliters of deionized water, and a hydrothermal solution was obtained after stirring;

[0049] The third step: Insert the 2 pieces of nickel foam obtained in the first step into the polytetrafluoro mold base, and the nickel foam remains in a vertical state; the polytetrafluoro base and the hydrothermal solution inserted into the nickel foam are added to the hydrothermal kettle, Fasten the hydrothermal kettle...

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Abstract

The invention belongs to the technical field of electrode materials, and particularly discloses an iron-molybdenum doped nickel sulfide/foamed nickel electrode and a preparation method and application thereof. The preparation method comprises the following steps of sequentially subjecting foamed nickel to cutting treatment, ultrasonic cleaning treatment and drying treatment for standby application; dissolving FeCl3.6H2O, (NH4)6Mo7O24.4H2O and Na2S in deionized water, conducting stirring, and putting the stirred material into a hydrothermal kettle; inserting the foamed nickel into a polytetrafluoroethylene mold base, and keeping the foamed nickel in a vertical state; and keeping the temperature at 150 DEG C for 6 hours, conducting cooling to room temperature, conducting washing and drying to obtain the iron-molybdenum doped nickel sulfide/foamed nickel electrode. The electrode can be used for cathode hydrogen evolution of electrolyzed water, can also be used as an anode oxygen evolution, is a difunctional electrode, and has better economical efficiency and environmental protection property.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, in particular to an iron-molybdenum-doped nickel sulfide / foam nickel electrode and a preparation method and application thereof. Background technique [0002] The ever-increasing consumption of fossil fuels and various environmental concerns have prompted us to formulate various green strategies for energy conversion and storage in order to achieve the goal of carbon neutrality. Hydrogen energy, as a clean energy source, will play an important role in this process, and large-scale hydrogen energy utilization must solve the problem of large-scale hydrogen production. Among various hydrogen production methods, hydrogen production by electrolysis of water will inevitably become the main method of hydrogen production in the future due to its wide range of raw materials, electric energy can be provided by new energy generation, and easy large-scale production. [0003] Hydrogen producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091C25B11/031C25B11/054
CPCC25B1/04C25B11/091C25B11/031C25B11/054Y02E60/36
Inventor 张瑞朱琳成健丽吕伟欣王伟
Owner YANCHENG INST OF TECH
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