Catalyst based on non-noble metal and preparation method thereof, electrode and fuel cell containing catalyst

Abstract

The invention provides a catalyst based on non-noble metal and a preparation method thereof, as well as an electrode and a fuel cell containing the catalyst. The catalyst based on the non-noble metal comprises a compound shown in a formula I, wherein M comprises at least one element from 4th family elements to 12th family elements, a is a number from about 1 to about 8, b is a number from 1 to 8, x is a number from about 0.2 to about 32, and y is a number from about 0.2 to about 16. The formula I is ZraMbOxNy.

Description

technical field One or more embodiments relate to a non-noble metal-based catalyst, a method of manufacturing the same, a fuel cell electrode including the non-noble metal-based catalyst, and a fuel cell including the non-noble metal-based catalyst. Background technique Conventionally, solid polymer electrolysis fuel cells use metal microparticles as electrode catalysts, which mainly include noble metals such as platinum (Pt) with excellent catalytic activity and high potential. However, Pt is a rare metal and thus expensive. Therefore, there is a need to replace Pt with other highly active electrode catalysts for fuel cells. In order to reduce the amount of Pt used, additives such as zirconia can be additionally used (see EP552133), or a transition metal oxynitride can be attached to the surface of the support by sputtering to produce a transition metal oxynitride electrode catalyst (see JP2006-334542) . However, the degree of activity of conventional non-noble metal-...

AI Technical Summary

Problems solved by technology

However, the degree of activity of conventional non-noble metal-based electrode catalysts is unsatisfactory and thus the performance of fuel cells using non-noble metal-based electrode catalysts is poor.

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