Catalyst layer used for fuel cell

Abstract

The invention discloses a catalyst layer used for a fuel cell. The catalyst layer comprises an initial reaction layer, a deep reaction layer, a plurality of fuel passages I and a plurality of fuel passages II, wherein the initial reaction layer is arranged on one side of the deep reaction layer, the fuel passages I are transversely arranged inside the initial reaction layer in an equally-spaced manner, and the fuel passages II are transversely arranged inside the deep reaction layer in the equally-spaced manner; the fuel passages I and the fuel passages II are arranged in a staggered manner; and a commutating area is further arranged between the initial reaction layer and the deep reaction layer in a communicating manner. The catalyst layer has the beneficial effects that firstly, completefuel conversion is realized, the reaction of CO is completed, poisoning caused by long-time remaining of CO is avoided, and the electrode performance is further improved; and secondly, the contact layer is lighter than catalyst layers in the prior art, the inner space is staggered and loosened, the contact area of the fuel and the catalyst can be improved effectively in the using process, and simultaneously, the remaining time of the fuel in the catalyst layer is prolonged, namely further deeply complete reaction of the fuel is reached.

Description

technical field [0001] The invention belongs to the field of new energy vehicles, and in particular relates to a catalyst layer for a fuel cell. Background technique [0002] Fuel cell electric vehicle is a kind of new energy vehicle. It uses hydrogen and other fuels and oxygen in the air to generate electricity through electrochemical reactions in fuel cells under the action of catalysts, and is used as the main power source to drive the vehicle. [0003] Its characteristics are: 1) high energy conversion efficiency. The energy conversion efficiency of the fuel cell can be as high as 60-80%, which is 2-3 times that of the internal combustion engine; 2) zero emission and no environmental pollution. The fuel of the fuel cell is hydrogen and oxygen, and the product is clean water; 3) Hydrogen fuel has a wide range of sources and can be obtained from renewable energy sources without relying on petroleum fuels. [0004] A fuel cell is a power generation device that directly co...

AI Technical Summary

Problems solved by technology

[0014] The existing catalyst layer will have incomplete fuel conversion and incomplete CO reaction during use, resulting in long-term residual CO, which will cause poisoning and reduce electrode performance

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