METHOD FOR CATALYZING A FUEL CELL ELECTRODE AND AN ELECTRODE SO PRODUCED

摘要

The disclosure teaches a process for introducing a soluble, catalyst-containing material into a conducting particle, hydrophobic-bonded electrochemical cell electrode. The process includes the step of dissolving the soluble catalyst-containing material in a liquid solution of dissimilar liquids which liquid solution has the following characteristics: It is capable of wetting the hydrophobic bonding material of the electrode at a first composition range of the liquids. It is incapable of wetting the hydrophobic bonding material at a second composition range of the liquids; and it is capable of changing from the first composition range to the second composition range on evaporation of the solution. The electrode is contacted by the soluble catalyst-containing material dissolved in the liquid solution in the first composition range, whereby the solution enters the hydrophobic and hydrophilic regions of the electrode structure. The solution is evaporated to change its composition from the first composition range to the second composition range whereby the solution withdraws from the hydrophobic bonding material of the electrode structure.