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A kind of preparation method of sulfonated polyphenol film

A sulfonated polyphenol and thin film technology, applied in the field of electrochemical preparation, can solve problems such as polymer membrane materials that have not yet been seen, and achieve the effects of facilitating preparation routes, improving electrical conductivity, and improving rate self-limiting problems

Inactive Publication Date: 2015-08-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in previous reports, there is no precedent for the preparation of high molecular polymer membrane materials with proton conductivity by electrochemical polymerization.

Method used

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  • A kind of preparation method of sulfonated polyphenol film
  • A kind of preparation method of sulfonated polyphenol film
  • A kind of preparation method of sulfonated polyphenol film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A sulfonated phenol aqueous solution with a concentration of 0.1 mol / L and pH=1 was used as the electrolyte solution, and three electrodes were used as electrodes. The three electrodes were working electrodes (disc stainless steel electrodes) and reference electrodes (saturated silver / silver chloride). Electrode) and counter electrode (platinum sheet electrode), and add supporting electrolyte sulfuric acid in the electrolyte solution to make the concentration of supporting electrolyte 0.05mol / L, and then perform cyclic voltammetry scan at room temperature in the voltage range of 0.6 to 1.6V ,Such as Figure 5 As shown, a yellow sulfonated polyphenol (polymer of sulfonated phenol) film is formed on the surface of the working electrode.

Embodiment 2

[0034] A sulfonated phenol aqueous solution with a concentration of 0.005 mol / L and pH=6.3 was used as the electrolyte solution, and three electrodes were used as electrodes. The three electrodes were working electrodes (sheet carbon electrodes) and reference electrodes (saturated silver / silver chloride electrodes). ) And the counter electrode (platinum wire electrode), carry out cyclic voltammetry scanning in the voltage range of 0.6~1.6V at 30℃, and carry out anodization reaction to realize the electrochemical polymerization of monomers, such as Image 6 As shown, a brown-yellow sulfonated polyphenol (polymer of sulfonated phenol) film is formed on the surface of the working electrode.

Embodiment 3

[0036] A sulfonated phenol aqueous solution with a concentration of 0.1 mol / L and pH=3 was used as the electrolyte solution, and three electrodes were used as electrodes. The three electrodes were the working electrode (nano-tube zirconia electrode) and the reference electrode (saturated silver / silver chloride). Electrode) and counter electrode (platinum mesh electrode), and add supporting electrolyte sulfuric acid to the electrolyte solution to make the concentration of supporting electrolyte 0.1mol / L, and then carry out cyclic voltammetry in the voltage range of 0.6~1.8V at 60℃ Scan, perform anodization reaction to realize the electrochemical polymerization of monomers, such as Figure 7 As shown, a yellow sulfonated polyphenol (polymer of sulfonated phenol) film is formed on the surface of the working electrode.

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Abstract

The invention relates to a preparing method for sulfonate polyphenol thin films. The preparing method includes that sulfonate phenol solutions serve as electrolyte solutions, three electrodes (a working electrode, a reference electrode and a counter electrode) serve as electrodes, and anode oxidizing reaction is conducted through cyclic voltammetry scanning or timing ampere method scanning to achieve electrochemistry polymerization reaction of monomers, so that a layer of yellow or brownish yellow sulfonate polyphenol thin film is produced on the surface of the working electrode. Functional grouping of sulfonic acid in the front body of the phenol endows polymer thin films with certain proton exchange capacities, conductivity of the polymer thin films is greatly improved, thicker polymer thin films can be obtained, a novel preparing method is provided for developing proton exchange films used for portable micro-miniature fuel cells, and convenient preparing approaches are provided for applications in some other possible special conditions.

Description

Technical field [0001] The invention relates to an electrochemical preparation method of a sulfonated proton exchange membrane-a sulfonated phenol polymer film, which belongs to the technical field of polymers with proton conductivity. Background technique [0002] Electrochemical polymerization refers to the process in which monomers polymerize on semiconductor or conductor electrodes through electrochemical methods. At present, it is usually used to prepare polymer films with various functions on the surface of anode or cathode, and it is considered to have important application prospects in the high-tech field. [0003] Phenol and its derivatives are aromatic monomer compounds, which are easily polymerized into various phenol polymers with good physical and chemical performance indicators. There have been reports on the electrochemical polymerization of phenol and its derivatives in the literature, which are mainly used in wastewater treatment, corrosion resistance of metal sur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/02C25D17/08
Inventor 侯宏英刘显茜
Owner KUNMING UNIV OF SCI & TECH
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