Nickel selenide/ferronickel substrate material as well as preparation method and application thereof

A base material, a technology of nickel selenide, applied in the field of electrocatalytic materials, can solve the problem of low catalytic performance of nickel selenide, etc., and achieve the effects of simple synthesis path, low reaction temperature and low ionic strength

Active Publication Date: 2020-12-11
SHAANXI UNIV OF SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

However, the prepared nickel selenide has good catalytic perfo

Method used

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  • Nickel selenide/ferronickel substrate material as well as preparation method and application thereof
  • Nickel selenide/ferronickel substrate material as well as preparation method and application thereof
  • Nickel selenide/ferronickel substrate material as well as preparation method and application thereof

Examples

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Example Embodiment

[0031] The present invention discloses a method of preparing the selenium nickel / nickel-iron base material, comprising the steps of:

[0032] Step a: foamed nickel iron pretreatment performed; pre-processing includes: first cut into 1.5cm × 4cm foamed nickel iron ultrasonic cleaning in an acetone solution of 10 ~ 15min, then placed in a suitable amount of a concentration of 1 ~ 2mol / L ultrasonic cleaning in hydrochloric acid solution 10 ~ 15s, then were dried over anhydrous ethanol, and ultrapure water are alternately rinsed 2 to 3 times and finally dried under vacuum at 30 ~ 40 ℃ 8 ~ 10h after backup;

[0033] Step 2: 75 ~ 80mg of selenium powder was poured into 2 ~ 3mL mass concentration of 50% hydrazine hydrate solution stirred until a homogeneous transparent wine red color solution A; preferably stirred using a magnetic stirring, a temperature of 60 to 65 ℃, time is 30 ~ 40min, the rotation speed of 400 ~ 500r / min;

[0034] Step 3: sodium dodecyl sulfate and 5.77 ~ 17.42...

Example Embodiment

[0038] Example 1:

[0039] 1) Pretreatment of iron in a nickel foam: first cut size of 1.5cm × 4cm foamed nickel iron 10min ultrasonic cleaning in an acetone solution, then poured in with a good 1mol / L hydrochloric acid ultrasonic cleaning 15s, respectively, and then with absolute ethanol, and ultrapure water alternately washed twice, and finally dried under vacuum at 34 ℃ 10h after backup;

[0040] Hydrazine hydrate 2) the powder into 2mL 75mg selenium concentration of 50%, at a temperature of 60 ℃, a rotational speed of the magnetic force 400r / min 40min stirred until clear solution presented wine red A;

[0041] 3) The sodium lauryl sulfate 5.77mg and 36.18mg of vanadium trichloride was poured into alignment with polystyrene liner 50mL of ethanol solvent and stirred at room temperature for 20min, to obtain a solution B, A solution was then poured into solution B, the pretreated foamed nickel iron into the mixed solution C, hydrothermal reaction at a temperature of 158 deg.] ...

Example Embodiment

[0045] Example 2:

[0046] 1) a nickel iron Pretreatment: first cut size of 1.5cm × 4cm foamed nickel iron 11min ultrasonic cleaning in an acetone solution, then poured into the well with 2mol / L hydrochloric acid was 12S ultrasonic cleaning, and then were dried over anhydrous ethanol, and ultrapure water washed three times alternately, and finally dried under vacuum at standby 8h 40 ℃;

[0047] Hydrazine hydrate 2) the powder into 3mL 76mg selenium concentration of 50%, at a temperature of 61 ℃, a rotational speed of the magnetic force 450r / min 35min stirred until clear solution presented wine red A;

[0048] 3) The sodium lauryl sulfate 8.1mg and 37.75mg of vanadium trichloride was poured into alignment with polystyrene liner 50mL of ethanol solvent and stirred at room temperature for 19min, to obtain a solution B, A solution was then poured into solution B, the pretreated foamed nickel iron into the mixed solution C, hydrothermal reaction at a temperature of 159 deg.] C, 13h...

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Abstract

The invention discloses a nickel selenide/ferronickel substrate material as well as a preparation method and application thereof, which are applied to the field of electrocatalysis. In the preparationmethod, selenium powder is used as a selenium source, lauryl sodium sulfate is used as a morphology regulating agent, vanadium trichloride is used as a vanadium source, foamed ferronickel is used asa nickel source, vanadium-doped nickel selenide grows on the foamed ferronickel in situ by adopting a solvothermal reaction method, and the foamed ferronickel has high conductivity, so that in-situ vanadium, nickel selenide and the conductive substrate foamed ferronickel are compounded, the contact resistance can be effectively reduced, the distribution of the catalyst is improved, electrons can be quickly transmitted to the surface of the catalyst and participate in the reaction, and the electrocatalytic activity and stability of the catalyst are improved. The prepared nickel selenide/ferronickel substrate material is applied to the field of electrocatalysis, and has excellent HER and OER performances under alkaline and neutral conditions.

Description

technical field [0001] The invention belongs to the field of electrocatalytic materials, and in particular relates to a nickel selenide / nickel-iron base material and a preparation method and application thereof. Background technique [0002] Hydrogen energy is considered as a sustainable and clean energy alternative to dwindling fossil fuels. Electrochemical water splitting is a mature commercial technology that converts electrical energy generated by intermittent renewable energy sources (such as solar energy, wind energy, etc.) into chemical energy stored in hydrogen fuel, which solves the problem of efficient storage and transportation. Currently, Ir-based and Ru-based compounds have high oxygen evolution performance (OER), and Pt group metals are the most effective hydrogen evolution (HER) catalysts, but their lack of resources and high cost greatly limit their wide application. Therefore, it is imminent to design OER and HER catalysts composed of earth-abundant element...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/03B01J27/057B01J35/00C25B1/04
CPCB01J27/0573B01J35/0033C25B1/04Y02E60/36
Inventor 曹丽云何丹阳冯亮亮黄剑锋吴建鹏牛梦凡
Owner SHAANXI UNIV OF SCI & TECH
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