Preparation method of nickel oxide and lignin carbon electrochemical catalysis nanocomposite

A technology of lignin carbon and catalytic materials, which is applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of scarce sources, limited industrial applications, high overpotential, etc., and achieve simple and environmentally friendly preparation methods, wide sources of raw materials, and stable catalytic performance Effect

Pending Publication Date: 2021-08-20
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the industry, the overpotential of the electrode reaction of electrolyzed water is relatively high, which consumes a large amount of electric energy, which greatly increases the cost of hydrogen production, and greatly limits the industrial application of electrolyzed water to produce hydrogen.
[0003] In order to reduce the influence of overpotential, many studies have found that the addition of noble metal catalysts (platinum, palladium, ruthenium and rhodium, etc.) can improve the efficiency and stability of hydrogen evolution reaction, but the disadvantages of noble metals, such as expensive and scarce sources, greatly hinder this method. industrial production of

Method used

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  • Preparation method of nickel oxide and lignin carbon electrochemical catalysis nanocomposite
  • Preparation method of nickel oxide and lignin carbon electrochemical catalysis nanocomposite
  • Preparation method of nickel oxide and lignin carbon electrochemical catalysis nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to Figure 1 ~ Figure 4 , a preparation method of nickel oxide / carbon composite nano-electrochemical catalytic material,

[0028] Weigh 2 g of gelatin particles, add to a mixed solution of 5 g of glacial acetic acid and 3 g of deionized water, and stir magnetically for 2 hours at room temperature. Subsequently, 10%wt sodium lignosulfonate (ie 1.11g sodium lignosulfonate) was added, and magnetically stirred at room temperature for 6 hours until uniform. Subsequently, after adding 0.25 g of nickel nitrate hexahydrate, the stirring was continued until uniform. Next, the homogeneous solution was poured into a disposable syringe for electrospinning. The obtained spinning product was ground with a mortar, and then placed in a vacuum oven at 60° C. for 24 hours to vacuum dry. The dried product was put into a tube furnace, calcined in an argon atmosphere at 800° C. for 150 minutes, cooled and ground to obtain nanocomposite fibers.

[0029] Electrode preparation: Add 0...

Embodiment 2

[0031] 2 g of gelatin particles were weighed, added to a mixed solution of 10 g of glacial acetic acid and 8 g of deionized water, and magnetically stirred at room temperature for 3 hours. Subsequently, 20%wt sodium lignosulfonate (ie 5g sodium lignosulfonate) was added, and magnetically stirred at room temperature for 8 hours until uniform. Subsequently, after adding 0.25 g of nickel nitrate hexahydrate, the stirring was continued until uniform. Next, the homogeneous solution was poured into a disposable syringe for electrospinning. The obtained spinning product was ground with a mortar, and placed in a vacuum oven at 80° C. for 48 hours to vacuum dry. The dried product was put into a tube furnace, calcined in an argon atmosphere at 1000° C. for 180 minutes, cooled and ground to obtain nanocomposite fibers.

[0032] Electrode preparation was consistent with the above examples.

Embodiment 3

[0034] 2 g of gelatin particles were weighed, added to a mixed solution of 10 g of glacial acetic acid and 4 g of deionized water, and magnetically stirred at room temperature for 2.5 hours. Subsequently, 20%wt sodium lignosulfonate (ie 4g sodium lignosulfonate) was added, and magnetically stirred at room temperature for 7 hours until uniform. Subsequently, after adding 0.25 g of nickel nitrate hexahydrate, the stirring was continued until uniform. Next, the homogeneous solution was poured into a disposable syringe for electrospinning. The obtained spinning product was ground with a mortar, and placed in a vacuum oven at 70° C. for 24 hours to vacuum dry. The dried product was put into a tube furnace, calcined in an argon atmosphere at 900° C. for 120 minutes, cooled and ground to obtain nanocomposite fibers.

[0035] Electrode preparation was consistent with the above examples.

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Abstract

The invention relates to a preparation method of a nickel oxide and lignin carbon composite electrochemical catalytic material, which comprises the following steps of by taking lignosulfonate and gelatin as raw materials, introducing nickel ions in a solution state, and finally carrying out electrostatic spinning and high-temperature carbonization to obtain nickel oxide / lignin carbon composite nanofibers. The raw materials used in the invention are natural, pollution-free, wide in source and low in cost, and the preparation method is simple; the prepared nano nickel oxide / carbon composite material has the characteristics of high specific surface area, excellent catalytic performance and the like.

Description

technical field [0001] The invention belongs to the field of electrochemistry and new energy materials, and relates to a method for preparing a nickel oxide and lignin carbon electrochemically catalyzed nanocomposite material. Background technique [0002] At present, with the increase of the world's population, the development of technology and the improvement of living standards, people's demand for energy is constantly increasing, and chemical fuels, which account for the largest amount, are gradually being replaced by some new types of fuels due to their shortage of resources and serious pollution. Renewable energy sources (such as hydrogen energy, wind energy, solar energy, nuclear energy, etc.) are replaced. Among them, hydrogen energy has attracted people's attention due to its advantages of light weight, convenient transportation, non-toxic and harmless. At present, the commonly used methods for producing hydrogen include fossil fuel hydrogen production, microbial h...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/077C25B11/065
CPCC25B1/04Y02E60/36
Inventor 陈枫蒋桢周泽平吴龙况太荣刘通钟明强
Owner ZHEJIANG UNIV OF TECH
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