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Nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst as well as preparation method and application thereof

A nitrogen-doped carbon and electrocatalyst technology, which is applied in circuits, electrical components, battery electrodes, etc., can solve the problems of poor catalyst durability and catalytic activity, restrictions on the wide application of platinum, and high application cost of platinum, and achieve easy large-scale Improvement of production and redox efficiency and strong operability

Active Publication Date: 2022-04-29
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the scarcity and high application cost of platinum, the wide application of platinum is greatly limited, so it is necessary to use limited platinum more rationally and effectively.
[0003] Among the traditional platinum-based catalysts, the durability and catalytic activity of most catalysts are relatively poor, and long-term use will cause serious structural changes and corrosion damage.

Method used

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  • Nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst as well as preparation method and application thereof
  • Nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst as well as preparation method and application thereof
  • Nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst as well as preparation method and application thereof

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Embodiment 1

[0026] A preparation method of a nitrogen-doped carbon-supported platinum-zinc alloy electrocatalyst, adding a nitrogen source, a zinc source, a platinum source, and a carbon source into a container filled with acetone according to the following mass ratio, wherein the nitrogen element in the nitrogen source hydroxylamine hydrochloride is 5.6 mg, 24 mg of carbon element in carbon black as a carbon source, 1.7 mg of zinc element in zinc acetylacetonate as a zinc source, 6.9 mg of platinum element in platinum source platinum acetylacetonate, and the above-mentioned weighed hydroxylamine hydrochloride, carbon black, platinum acetylacetonate, and acetylacetonate Dissolve zinc in a container containing 20ml (15760mg) of acetone to make it evenly dispersed, then stir it at 80°C until it becomes viscous, then put it in an oven at 60°C for drying treatment, after it is completely dry, put it in a tube furnace Calcination was carried out at 950°C, nitrogen was used as protective gas, py...

Embodiment 2

[0030] A preparation method of a nitrogen-doped carbon-supported platinum-zinc alloy electrocatalyst, adding a nitrogen source, a zinc source, a platinum source, and a carbon source into a container filled with acetone according to the following mass ratio, wherein the nitrogen element in the nitrogen source hydroxylamine hydrochloride is 8.4 mg, 30mg of carbon element in carbon black as a carbon source, 3.5mg of zinc element in zinc acetylacetonate as a zinc source, 10.4mg of platinum element in platinum acetylacetonate as a platinum source, and the above-mentioned weighed hydroxylamine hydrochloride, carbon black, platinum acetylacetonate, and acetylacetonate Dissolve zinc in a container containing 20ml of acetone that is 15760mg of acetone, make it evenly dispersed, then stir it at 80°C until it becomes viscous, then put it in an oven at 100°C for drying treatment, and put it in the tube after it is completely dry. Calcination was carried out at 950°C in a type furnace, neon...

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Abstract

The invention discloses a nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst and a preparation method and application thereof.The preparation method comprises the steps that a platinum source, a zinc source, a nitrogen source and a carbon source are placed in a container containing acetone, stirred to be viscous at the temperature of 80 DEG C, evaporated and dried, a dried object is obtained and then calcined, the mass part ratio of the platinum element to the zinc element is (2-3): (1-2), and the nitrogen-doped carbon-loaded platinum-zinc alloy electrocatalyst is obtained; the mass part ratio of the nitrogen element to the carbon element is (2-3): (1-2), the ratio of the sum of the mass parts of the platinum element and the zinc element to the mass part of the carbon source is (1-2): (4-5), and the mass part ratio of the platinum element to the acetone is 0.007: 1. According to the technical scheme, the prepared electrocatalyst is prepared by mixing a platinum source, a zinc source, a nitrogen source and a carbon source according to a certain mass part ratio, the obtained redox electrocatalyst is good in stability and easy to produce on a large scale, the obtained electrocatalyst is nitrogen-doped carbon carrier complex platinum-zinc alloy particles, and compared with an existing platinum metal catalyst, the preparation method has the advantages that the cost is low, and the application range is wide. The redox efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electrocatalysts, in particular to a nitrogen-doped carbon-supported platinum-zinc alloy electrocatalyst and a preparation method and application thereof. Background technique [0002] Low-temperature fuel cell is the most potential energy conversion device today, and gradually attracts people's attention because of its environmental protection and high energy conversion efficiency. Among them, the redox reaction is a very important electrochemical reaction, which plays an irreplaceable role in the catalysis of fuel cells. With the updating of technology, the demand for high stability and high activity redox catalysts is constantly increasing, so the development of more efficient catalysts is very important for the application of fuel cells. In general, platinum metal is the most common catalyst in practical applications. However, due to the scarcity and high application cost of platinum, the wide appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/88
CPCH01M4/926H01M4/8885H01M4/8842Y02E60/50
Inventor 李皓强
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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