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Application of polymer product obtained by polymerizing aromaticnitrile compound as oxygen reduction catalyst

A technology of aromatic ring compounds and compounds, applied in the field of electrochemistry, can solve problems such as difficult large-scale preparation, limited heteroatom content, complicated operation, etc., and achieve excellent oxygen reduction catalytic activity, high stability, and simple preparation.

Active Publication Date: 2014-08-20
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The controllability of this reaction method is relatively poor, and the content of doped heteroatoms is limited. The most important thing is that this type of method is complicated to operate, so it is not easy to prepare on a large scale

Method used

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  • Application of polymer product obtained by polymerizing aromaticnitrile compound as oxygen reduction catalyst
  • Application of polymer product obtained by polymerizing aromaticnitrile compound as oxygen reduction catalyst
  • Application of polymer product obtained by polymerizing aromaticnitrile compound as oxygen reduction catalyst

Examples

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Effect test

Embodiment 1

[0040] This example is used to illustrate the preparation method of the N element-doped oxygen reduction catalyst provided by the present invention.

[0041] Mix 1g (7.81mmol) of terephthalonitrile (CAS No. 623-26-7) and 0.53g (3.9mmol) of anhydrous zinc chloride, and transfer them to a 10ml quartz tube, and replace the quartz with argon air in the tube, seal it and put it into a muffle furnace, react at 700°C for 0.5 hours, cool down to room temperature (25°C) naturally, open the glass tube, take out the polymerization product, and successively use 1mol / L Washed with hydrochloric acid and pure water, then placed in a vacuum oven and dried at 120°C for 10 hours to obtain an N-doped polymer product, which can be used as an oxygen reduction catalyst. Among them, the content of nitrogen in the catalyst is 10.3%, and the specific surface area is 1710m 2 / g, the pore size distribution range is: 0.5~4nm.

Embodiment 2

[0043] This example is used to illustrate the preparation method of the N element-doped oxygen reduction catalyst provided by the present invention.

[0044] Mix 1 g (7.81 mmol) of terephthalonitrile (CAS number: 623-26-7) and 10.64 g (78 mmol) of anhydrous zinc chloride, and transfer them to a 10ml quartz tube, and replace the quartz tube with argon After sealing it, put it into a muffle furnace, react at 700°C for 80 hours, cool it to room temperature (25°C) naturally, open the glass tube, take out the polymerized product, and successively wash it with 1mol / L hydrochloric acid , washed with pure water, and then placed in a vacuum drying oven and dried at 120 °C for 10 hours to obtain an N-doped polymer product, which can be used as an oxygen reduction catalyst. In the obtained oxygen reduction catalyst, the content of nitrogen element was 2.1%. The specific surface area is 2980m 2 / g, pore size distribution: 0.4~10nm.

Embodiment 3

[0046] This example is used to illustrate the preparation method of the N element-doped oxygen reduction catalyst provided by the present invention.

[0047] Mix 1g (7.81mmol) of terephthalonitrile (CAS No.: 623-26-7) and 1.06g (7.8mmol) of anhydrous zinc chloride, and transfer them to a 10ml glass tube, replace the glass with argon air in the tube, seal it and put it into a muffle furnace, react at 300°C for 5 hours, cool down to room temperature (25°C) naturally, open the glass tube, take out the polymerized product, and use 1mol / L of Washed with hydrochloric acid and pure water, then placed in a vacuum oven and dried at 120°C for 10 hours to obtain an N-doped polymer product, which can be used as an oxygen reduction catalyst. Among them, the content of nitrogen in the catalyst is 18.4%, and the specific surface area is 143m 2 / g, the pore size distribution range is: 0.4~2.8nm.

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Abstract

The invention discloses an application of a polymer product obtained by polymerizing an aromaticnitrile compound as an oxygen reduction catalyst, which belongs to the field of electrochemistry. The polymer product obtained by polymerizing the aromaticnitrile compound is used as the oxygen reduction catalyst, so that the oxygen reduction activity is excellent, the stability is high, the mass preparation can be realized, and the polymer product can be widely applied to the commercial application.

Description

technical field [0001] The invention relates to the use of a polymerization product obtained by polymerization of aromatic nitrile compounds as an oxygen reduction catalyst, and belongs to the technical field of electrochemistry. Background technique [0002] With the gradual consumption of fossil fuels and the increasingly serious environmental problems, clean energy technology has become an urgent and critical technology. As a clean energy technology, low-temperature fuel cells have the advantages of high specific energy, mild working conditions, and fast start-up speed, and are an ideal new energy source. In low-temperature fuel cells, the most critical part is the catalyst part that accelerates the oxygen reduction reaction, and the current commercial catalyst is a platinum-carbon (Pt / C) catalyst. [0003] However, as a precious metal, platinum is not only expensive, but also scarce in nature. Therefore, it is considered to be an effective way to finally realize large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J31/06
CPCY02E60/50H01M4/9008
Inventor 智林杰郝龙
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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