Preparation method of MOF compound and non-noble metal catalyst

Abstract

The invention provides a preparation method of an MOF compound and a non-noble metal catalyst. The self-sacrificial metal center and the reaction active site of the MOF compound are magnesium. Meanwhile, the invention provides a preparation method of the non-noble metal catalyst. The self-sacrificial center and reaction active sites of the MOF compound are magnesium, and the boiling point of magnesium is 1089 DEG C, so that during high-temperature pyrolysis, residual magnesium limits aggregation of active metal centers, more monatomic sites are captured in graphite carbon, and the activity ofthe prepared non-noble metal catalyst can be improved.

Description

technical field [0001] The present application relates to the technical field of electrocatalysts, in particular to a method for preparing MOF compounds and non-noble metal catalysts. Background technique [0002] Fuel cells have the advantages of high energy density, environmental friendliness and resource saving, and have become one of the ideal energy storage devices. As the main reaction site of the fuel cell, the air electrode or the oxygen electrode undergoes complex oxygen reduction reactions and oxygen evolution reactions. These reactions need to be improved by catalysts due to poor reaction kinetics. Precious metal catalysts have disadvantages such as high price, shortage of resources, and single catalytic performance. At present, non-precious metal catalysts are often used to increase the reaction rate. [0003] In the related art, zinc-based-MOF (Metal-Organic Framework, MOF) compounds are often used to prepare non-noble metal catalysts. However, since the boilin...

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Problems solved by technology

Precious metal catalysts have disadvantages such as high price, shortage of resources, and single catalytic performance. At present, non-precious metal catalysts are often used to increase the reaction rate

[0003] In the related art, zinc-based-MOF (Metal-Organic Framework, MOF) compounds are often used to prepare non-noble metal catalysts. However, since the boiling point of zinc is 907 ° C, this leads to the use of zinc-based-MOF compounds to prepare non-noble metal catalysts. The temperature is usually between 900 °C and 1100 °C, and high temperature will cause the active metal centers to aggregate and form inactive structures, which will limit the efficiency of the synthesis process and reduce the activity of the prepared non-noble metal catalysts

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