Oxygen reduction catalyst for fuel cell, and preparation method thereof

Abstract

The invention relates to an oxygen reduction catalyst for a fuel cell, and a preparation method thereof. The oxygen reduction catalyst comprises a transition metal oxide and graphene, wherein a ratio of the transition metal oxide to the graphene is 1-100:1-50, the particle size of the transition metal oxide loaded on the graphene is 0.1-600 nm. The catalyst and the preparation method of the present invention have the following advantages that: with the method, the preparation time is shortened, the cost is low, the reaction conditions are mild, the process is safe, and the catalyst has advantages of good methanol resistance and good carbon monoxide resistance.

Description

technical field

[0001] The invention belongs to a catalyst and a preparation method thereof, in particular to an oxygen reduction catalyst for a fuel cell and a preparation method thereof. Background technique

[0002] Fuel cell is a green energy device that can convert chemical energy into electrical energy without burning. Because of its high energy density, environmental friendliness, pollution-free and high specific power, it has become a research hotspot all over the world. In the fuel cell system, the commonly used oxygen reduction catalyst is the noble metal Pt, which has high catalytic activity and good stability, and is a high-efficiency oxygen reduction catalyst. However, the commercial development of fuel cells is limited due to the high price. Therefore, the development of low-cost, high-efficiency non-precious metal oxygen reduction catalysts has become a top priority for fuel cells.

[0003] Among the non-noble metal oxygen reduction catalyst systems, the rese...