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Preparation of Pt-CeO2/porous polyaniline electrode material

A pt-ceo2 and composite material technology, applied in the direction of coating, etc., can solve the problems of high toxicity of methanol fuel, high methanol crossover, etc., and achieve the effect of good quality transportation, high utilization rate, and high capacitance performance

Inactive Publication Date: 2018-08-10
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct alcohol fuel is relatively safe and has great development prospects, but methanol fuel has the disadvantages of high toxicity and high methanol crossover. It is imperative to find alternative fuels and develop suitable Pt-based catalysts.

Method used

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  • Preparation of Pt-CeO2/porous polyaniline electrode material
  • Preparation of Pt-CeO2/porous polyaniline electrode material
  • Preparation of Pt-CeO2/porous polyaniline electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh a certain amount of cerium nitrate and urea to make 0.2mg·mL -1 Cerium nitrate solution 20mL, 3.0mg·mL -1 15mL of urea, mix the two solutions, under vigorous stirring, add ammonia solution drop by drop to adjust the pH value (pH=8-9), set the oven temperature at 80°C, let it stand for 2h, then age at room temperature for 12h, then filter and wash . The obtained precipitate was baked in an oven at 60°C for 5 hours, and then calcined in a muffle furnace at 400°C for 1 hour, and the product obtained was CeO 2 .

[0022] (2) Dissolve 1.0 g of aniline (An) and 0.5 g of sodium dodecylbenzenesulfonate (SDBS) in 31 mL of 0.5 M sulfuric acid solution (labeled solution A), where sulfuric acid is used as a protonic acid dopant. Add a certain amount of ATP to solution A to obtain a mixed solution, then add 2.84g of ammonium persulfate to dissolve in 31mL of 0.5M sulfuric acid (labeled solution B), slowly add the resulting solution B to the mixed solution, and stir Nex...

Embodiment 2

[0027] Disperse the carrier prepared in step 1 in deionized water and stir for about 30 minutes. Different proportions of Pt-CeO 2 / porous polyaniline for the catalytic oxidation of glycerol, and detect the cyclic voltammetry curve of the product. In 0.5M glycerol + 0.5M H 2SO 4 In solution, the scan rate is 0.1V s -1 , and the scan parameters are set at -0.2V-1.0V, and a CV test is performed.

Embodiment 3

[0029] Disperse the carrier prepared in step 1 in deionized water and stir for about 30 minutes. The CV method is used to deposit Pt on the surface of the electrode, and the number of circles set during the deposition is different, and the catalytic effect obtained is also different.

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Abstract

The invention belongs to supercapacitors and in particular relates to a preparation method of a Pt-CeO2 / porous polyaniline electrode material. Aiming at coping with the problem of energy shortage, a direct methanol fuel cell (DMFC) becomes a hotspot of researches and development; a Pt-based catalyst is an anode catalyst, which has the best effect, of a battery. However, the Pt-based catalyst has an expensive price and a carbon-containing intermediate, which easily poisons the Pt-based catalyst, is easy to generate. Conductive metal oxide and a conductive polymer are compounded with Pt, so thatthe dosage of the Pt can be reduced and the CO poisoning resisting capability is improved, and furthermore, the activity and stability of the Pt-based catalyst are improved. A chemical template method is mainly used for preparing porous polyaniline; the metal oxide is compounded with the porous polyaniline, and then Pt nanoparticles are deposited on a metal oxide / porous polyaniline composite material through an electrochemical deposition method. The composite material prepared by the preparation method is characterized to find out that the Pt-CeO2 / porous polyaniline composite material has thebest catalytic oxidization effect on glycerol.

Description

technical field [0001] The invention belongs to supercapacitors, especially a kind of Pt-CeO 2 / Preparation of porous polyaniline electrode materials. Background technique [0002] Since the beginning of the 21st century, energy issues have attracted more and more attention, especially in recent years when global energy is scarce, and the development of clean and efficient new energy has become a research hotspot. Compared with thermal power generation and atomic power generation, fuel cell power generation technology has outstanding advantages such as low noise, environmental protection, high energy conversion efficiency, diversified fuels, and decentralized and centralized power supply. [0003] Among many fuel cells, methanol fuel cell is the hotspot of current research. Direct methanol fuel cell (DMFC) is a kind of proton exchange membrane fuel cell that uses methanol aqueous solution as fuel. In addition to the advantages of proton exchange membrane fuel cell, it als...

Claims

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Application Information

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IPC IPC(8): C08J9/26C08J9/40C08J9/36C08L79/02
CPCC08J9/26C08J9/36C08J9/40C08J2201/044C08J2379/02
Inventor 谢爱娟杜佳雯罗士平朱士超陈培伍潘菲王璐陈苏洁
Owner CHANGZHOU UNIV
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