Preparation method of ethanol oxidation catalyst with high-efficient electron transporting structure

An electron transport and ethanol oxidation technology, applied in structural parts, electrochemical generators, circuits, etc., can solve the problems of easy corrosion and oxidation of carbon carriers, high overpotential of cathode catalysts, easy poisoning of anode catalysts, etc., to reduce commercialization Cost, low onset potential, and the effect of improving electrocatalytic activity

Inactive Publication Date: 2018-02-23
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, due to the high overpotential of the cathode catalyst, the easy poisoning of the anode catalyst, the high cost of the catalyst, and the easy corrosion and oxidation of the carbon support, researchers are increasingly devoting themselves to the development of highly resistant anode electrocatalysts with novel structures and low overvoltage electrocatalysts. potential cathodic catalyst

Method used

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  • Preparation method of ethanol oxidation catalyst with high-efficient electron transporting structure
  • Preparation method of ethanol oxidation catalyst with high-efficient electron transporting structure
  • Preparation method of ethanol oxidation catalyst with high-efficient electron transporting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Specific steps are as follows:

[0016] Weigh 1.5g of glucose, 0.2g of nickel chloride and 0.5g of urea, mix and dissolve in 30ml of distilled water, and dry at 100°C for 12h; the obtained solid sample is calcined at 3°C / min to 800°C under a nitrogen atmosphere, and kept for 2h. To obtain a nitrogen-doped nickel / carbon solid sample; take 50 mg of the above sample and disperse it in 20 mL of ethylene glycol solution, add 1.11 ml of chloroplatinic acid solution with a mass concentration of 7.91 mg / ml after ultrasonication for two hours, and continue ultrasonication for two hours , the resulting mixed solution was moved to a three-necked flask, nitrogen gas was continuously introduced, and reacted in a flowing oil bath at a temperature of 130°C for 3 hours. After natural cooling, it was washed with distilled water and ethanol for 5 times, and then placed in a dry box. Dry at 100°C for 10 hours to obtain a nitrogen-doped platinum-nickel / carbon catalyst. The morphology of t...

Embodiment 2

[0018] Same as Example 1, except that the consumption of chloroplatinic acid solution was changed to 0.74 mL. The prepared catalyst particles are unevenly dispersed and the current density is low.

Embodiment 3

[0020] Same as Example 1, except that the consumption of chloroplatinic acid solution was changed to 2.22mL. The prepared catalyst has obvious agglomeration phenomenon and low current density.

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Abstract

The invention discloses a preparation method of an ethanol oxidation catalyst with a high-efficient electron transporting structure. The method concretely the following steps: 1. glucose, urea, nickelchloride are mixed in order to prepare an aqueous solution, evaporation to dryness, calcination, washing and drying are carried out, in order to obtain a nitrogen doped nickel / carbon solid sample. 2.the nitrogen doped nickel / carbon sample and a chloroplatinic acid solution are mixed in order to prepare an ethylene glycol solution, ultrasonic treatment, oil bath, centrifugal washing, and drying are carried out in order to obtain the nitrogen doped platinum-nickel / carbon catalyst. The nitrogen doped platinum-nickel / carbon catalyst has the high efficient electron transporting structure, and excellent electrocatalytic oxidation performance for ethanol.

Description

technical field [0001] The invention belongs to the technical field of fuel cell catalysts, and specifically provides a method for preparing an ethanol oxidation catalyst with an efficient electron transport structure. Background technique [0002] Direct ethanol fuel cell (DEFC) has attracted more and more attention of researchers because of its unique advantages such as fuel safety, abundant sources, low price, easy portability and storage. At present, noble metals have become the main research and application objects of anode and cathode catalysts for direct methanol fuel cells due to their highest catalytic activity and excellent electrocatalytic efficiency among all metal catalysts. However, due to the high overpotential of the cathode catalyst, the easy poisoning of the anode catalyst, the high cost of the catalyst, and the easy corrosion and oxidation of the carbon support, researchers are increasingly devoting themselves to the development of highly resistant anode e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M8/1011B82Y30/00
CPCB82Y30/00H01M4/921H01M4/925H01M4/926H01M8/1013Y02E60/50
Inventor 余建国戴堂明李娟
Owner TIANJIN POLYTECHNIC UNIV
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