A simplified DEMS Set Up for Electrocatalytic Studies of porous PtRu Alloys

摘要

A simplified experimental apparatus for Differential Electrochemical Mass Spectrometry (DEMS) was constructed having only one tur-bomolecular pump and a modified gas inlet system. The setup allows the determination of the activity of porous PtRu electrodes for the electro-oxidation of small organic molecules. Various PtRu alloys with defined composition can be electrodeposited onto porous gold substrates. First results on the electrooxidation of methanol in acid solution were presented.