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Metal-doped nitrogen-containing carbon-based catalyst of fuel cell and application thereof

A metal doping and fuel cell technology, applied in fuel cells, battery electrodes, electrochemical generators, etc., to achieve the effects of increased dispersion, low price, and large active area

Active Publication Date: 2014-03-26
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And this patent is limited to the preparation of bulk carbon materials

Method used

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  • Metal-doped nitrogen-containing carbon-based catalyst of fuel cell and application thereof
  • Metal-doped nitrogen-containing carbon-based catalyst of fuel cell and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Dissolve 6.16 resorcinol in 7mL deionized water to form solution A; then add dropwise 8.4ml of formaldehyde solution with a mass concentration of 37% to form transparent solution B, stir evenly and add lye dropwise to B to adjust The pH value is about 8, then add 0.815g cobalt nitrate to it, stir evenly, add 0.4g CTAB / ethanol, stir further until the reaction forms gel C; transfer gel C to a vacuum drying oven for vacuum drying at 80°C Aging treatment for 6d, crushing and grinding after taking out to obtain solid powder D; 3 Nitriding treatment in the atmosphere for 2h to obtain a solid powder product.

[0055] The electrode preparation is as follows: Measure 5 mg of catalyst, 1 ml of absolute ethanol, and 50 μl of 5% Nafion solution. After mixing, ultrasonically oscillate evenly, and transfer 10 μl to an area of ​​0.1256 cm 2 On the glassy carbon disk electrode, it becomes a thin film electrode after drying. The specific electrode is a saturated KCl calomel electrode ...

Embodiment 2

[0059] Dissolve 6.16 resorcinol in 7mL deionized water to form solution A; then add dropwise 8.4ml of formaldehyde solution with a mass concentration of 37% to form transparent solution B, stir evenly and add lye dropwise to B to adjust The pH value is about 8, then add 0.815g cobalt nitrate to it, stir evenly, add 0.4g CTAC / ethanol, stir further until the reaction forms gel C; transfer gel C to a vacuum drying oven for vacuum drying at 80°C Aging treatment for 6d, crushing and grinding after taking out to obtain solid powder D; 3 Nitriding treatment in the atmosphere for 2h, to obtain solid powder E.

Embodiment 3

[0061] Dissolve 7.06g of melamine in 10mL of deionized water to form solution A; add dropwise 12.3ml of formaldehyde solution with a mass concentration of 37% to the stirring solution A, stir at 60°C to form a transparent solution B, and adjust the pH value to about 8, keep stirring to obtain solution C, take 0.4074g cobalt nitrate solid and add it to the above transparent solution C, mix well to obtain solution D; after stirring evenly, add ethanol solution containing 0.4g CTAB, and stir further until the reaction forms a gel E; transfer the gel E to a vacuum drying oven for 3 days of vacuum drying and aging treatment at 80°C, take it out and grind it to obtain a solid powder F; put the solid powder F in NH 3 Carbonization treatment at 800°C for 2 hours in the atmosphere to obtain solid powder G, which was treated with 2M HNO 3 The solution was washed to remove the metal to obtain H as a solid powder.

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Abstract

The invention relates to a metal-doped nitrogen-containing carbon-based catalyst of a fuel cell and application of the catalyst. The catalyst adopts organic surface active agents as a protection agent and a structural guide agent and adopts an aromatic compound and aldehyde as reaction monomers, metal elements are added in the reaction process to obtain a polymer-metal compound, and the polymer-metal compound is dried and then is subjected to high-temperature processing with inert gas or / and ammonia gas to finally obtain the metal-doped nitrogen-containing carbon-based catalyst. When the metal-doped nitrogen-containing carbon-based catalyst is used as a cathode catalyst of a proton exchange membrane fuel cell and a direct-methanol fuel cell, the oxide reduction activity, stability and toxicity resistance are excellent; moreover, the catalyst has an environment-friendly effect, is low in cost, controllable in aperture, high in specific surface area and rich in resource and can substitute for platinum to serve as an electric catalyst of the proton exchange membrane fuel cell.

Description

technical field [0001] The invention relates to a fuel cell catalyst, in particular to the application of a nitrogen-containing carbon-based catalyst doped with metal in proton exchange membrane fuel cell (PEMFC) and direct methanol fuel cell (DMFC). Background technique [0002] Energy is an important material basis for the development of the national economy and the improvement of people's lives. At present, my country's economy and society are in a stage of rapid development, and the demand for energy is increasing day by day. At the same time, problems such as "energy shortage" and "environmental pollution" are becoming increasingly prominent. Therefore, saving and improving the utilization rate of fossil energy, realizing energy conservation and emission reduction, vigorously researching and developing and utilizing renewable energy on a large scale, and realizing energy diversification have become important strategies for energy security and sustainable development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90
CPCY02E60/50H01M4/9083H01M8/1011
Inventor 张华民钟和香许壮毛景霞柳丝丝邱艳玲
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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