Iron-nitrogen codope carbon microspheres as well as preparation method, application and oxygen reduction electrode

Abstract

The invention relates to a preparation method of an iron-nitrogen codope carbon microsphere composite material. The preparation method comprises the following steps: S1, performing sealed reaction on hexachlorobutadiene, an iron source compound and a nitrogen-containing compound at high temperature and high pressure; S2, after the reaction is completed, releasing the pressure to normal pressure, naturally cooling to the room temperature, and drying obtained solids so as to obtain a dried sample; S3, performing high-temperature roasting treatment on the dried sample in the presence of an inert gas, thereby obtaining the iron-nitrogen codope carbon microsphere composite material. The invention further relates to a composite material, application of the composite material, and an oxygen reduction electrode with the composite material. The iron-nitrogen codope carbon microsphere composite material is excellent in property, can be used for preparing the oxygen reduction electrode of a fuel battery, thus can be used in fuel batteries, is good in electrochemical property, and has great application potential and industrial values in the electrochemical field.

Description

technical field [0001] The present invention provides a composite material and its preparation method, use and electrode prepared therefrom, more specifically, it provides a kind of iron-nitrogen co-doped carbon microspheres and its preparation method, use and oxygen reduction The electrode belongs to the technical field of inorganic functional materials and electrochemical energy. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has excellent characteristics such as fast startup, long life, high energy, and no pollution, so it has good application prospects in many fields such as automobile power devices, mobile power sources, and power plants. But on the other hand, because there are still many technical bottlenecks that cannot be solved, the proton exchange membrane fuel cell is still far away from the real commercial application. [0003] By far the most commonly used fuel cell catalysts are platinum-based catalysts. However, due to the high pri...

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Problems solved by technology

But on the other hand, the synthesis process of this type of catalyst is complicated, the conditions are harsh, it is difficult to synthesize on a large scale, and its electrical properties still need to be further improved.

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