Oxygen substrate of fuel battery

Abstract

The invention discloses an oxygen substrate of a fuel cell, which is characterized in that an oxidation channel is arranged on one side of the oxygen substrate; a heat dissipation channel is arranged on the other side of the oxygen substrate; a waste gas channel with one closed end and one open end is also arranged on the heat dissipation channel side of the oxygen substrate; and limiting holes having a diameter of 0.5 to 1.5 mm and communicated with the waste gas channel are arranged on the bottom of the oxidation channel. The flow field structure of the oxygen substrate can limit the gas flow rate to ensure uniform distribution of reactive gas in the flow field and can also rationally distribute the gas amount in the oxidation channel and the cooling channel.

Description

technical field [0001] The invention relates to a fuel cell oxygen plate, in particular to a proton exchange membrane fuel cell oxygen plate. Background technique [0002] A fuel cell is a power generation device that converts the chemical energy of fuel directly into electrical energy by electrochemical reaction without combustion, that is, it generates electricity through a simple electrochemical reaction in which oxygen and hydrogen combine to form water. It can be of various types, but all are based on a basic design, that is, they all contain two electrodes, a negative anode and a positive cathode. The two electrodes are separated by a solid or liquid electrolyte between them that carries a charge. Catalysts on electrodes, such as platinum, are often used to accelerate electrochemical reactions. As long as fuel is continuously supplied to the fuel cell, electrochemical reactions can continuously occur on the electrodes and generate electric current. The voltage of a ...

AI Technical Summary

Problems solved by technology

The gas flow rate in the oxidation channel should be appropriate. If the gas supply is not enough, it cannot meet the needs of the battery. At the same time, due to the accumulation of water generated at the battery outlet, more liquid water will easily cause the battery to flood and affect the performance of the battery. If the amount of gas is too much, the humidity in the flow field will be relatively low, resulting in dry proton exchange membrane, increased internal resistance, increased ohmic polarization, and easy membrane damage, resulting in poor battery performance

Images