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Carbon cloth electrode loaded with silver balls on surface, preparation method and application of carbon cloth electrode in hydrogen production

A carbon cloth electrode, surface loading technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve the problems of unfavorable material contact with electrolyte, limitation of electrocatalytic ability, etc., and achieve excellent electrocatalytic stability, high conductivity, good The effect of electrocatalytic activity

Pending Publication Date: 2022-05-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the one hand, the high-temperature carbonization / graphitization during the manufacturing process, the carbon fiber as the weaving unit of the carbon cloth has a non-polar surface that is not conducive to the contact of the material with the electrolyte
On the other hand, the electrical conductivity of carbon materials is much lower than that of metal materials, which limits their electrocatalytic ability.

Method used

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  • Carbon cloth electrode loaded with silver balls on surface, preparation method and application of carbon cloth electrode in hydrogen production
  • Carbon cloth electrode loaded with silver balls on surface, preparation method and application of carbon cloth electrode in hydrogen production
  • Carbon cloth electrode loaded with silver balls on surface, preparation method and application of carbon cloth electrode in hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Surface treatment of carbon cloth

[0041] The mixed acid solution obtained by mixing the sulfuric acid aqueous solution with a mass concentration of 10% and the nitric acid aqueous solution with a mass concentration of 10% according to the volume ratio of 1:3, place the cut carbon cloth (2×1cm) in the mixed acid solution for 24 hours, and place the carbon cloth After the cloth is taken out, it is washed several times with distilled water and ethanol (mass fraction ≥ 99.7%), and then dried at 60°C to obtain acid-treated carbon cloth;

[0042] (2) Preparation of carbon cloth electrodes for in situ growth of silver spheres

[0043] First, dissolve 3g of glucose and 0.11g of silver nitrate in 25mL of deionized water and stir evenly, then add the solution together with the acid-treated carbon cloth obtained in step (1) into a 50mL polytetrafluoroethylene-lined autoclave, and react at 180°C 16 hours, naturally cooled to room temperature. The silver-loaded carbon cloth ...

Embodiment 2

[0045] As in Example 1, the amount of silver nitrate added was adjusted to 0.22 g to obtain a carbon cloth electrode loaded with silver balls. For the test results, see Figure 7 Curve 2.

Embodiment 3

[0047] As in Example 1, the amount of silver nitrate added was adjusted to 0.33 g to obtain a carbon cloth electrode loaded with silver balls. For the test results, see figure 2 , Figure 7 and Figure 8 Curve 3.

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PUM

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Abstract

The invention discloses a carbon cloth electrode loaded with silver balls on the surface, a preparation method and application of the carbon cloth electrode in hydrogen production by electrolyzing a Bunsen reaction product, and belongs to the technical field of micron synthesis. According to the invention, silver nitrate is taken as a silver source, water is taken as a solvent, glucose is taken as a reducing agent, and in-situ growth of silver balls on the carbon cloth is realized under a hydrothermal condition, so that the excessive smoothness and hydrophobicity of the surface of the carbon cloth are reduced, and the electron transmission capability of the material is effectively improved. The prepared electrode material has high conductivity and excellent electrocatalytic activity, has good stability in a strong acid electrolyte, and can be applied to direct electrolysis of a Bunsen reaction product for hydrogen production. Taking a sample with the addition amount of glucose being 1 g and the addition amount of silver nitrate being 0.33 g as an example, the current density can reach 10 mA / cm < 2 > only needing 251 mV. And after 3000 cycles of cyclic voltammetry, 97.1% of initial current density can still be maintained.

Description

technical field [0001] The invention belongs to the technical field of micron synthesis, and in particular relates to a carbon cloth electrode loaded with silver balls on the surface, a preparation method and its application in hydrogen production by electrolysis of a Bunsen reaction product (mixed solution of sulfuric acid and hydroiodic acid). Background technique [0002] Energy is one of the material bases for human survival and development, but with the increase of the global population and the rapid development of the world economy, the problem of energy shortage has become increasingly prominent. On the one hand, non-renewable resources such as oil and coal will be depleted very quickly. On the other hand, the burning of fossil fuels produces harmful gases such as carbon dioxide, leading to problems such as the destruction of the Earth's ozone layer, global warming, and acid rain. Therefore, people are actively exploring clean and renewable energy sources that can re...

Claims

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Application Information

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IPC IPC(8): C25B11/081C25B11/056C25B11/054C25B1/02C25B1/50
CPCC25B11/081C25B11/056C25B11/054C25B1/02C25B1/50
Inventor 赵旭张万佳朱燕超赵纯
Owner JILIN UNIV