However, the 6-electrode cell allows combination of RRDE-analogue experiments with differential electrochemical mass spectroscopy (DEMS). Volatile products formed at the detection electrode, therefore, can be identified via mass spectroscopy, which is not possible with an RRDE-arrangements. At the same time it is possible to identify volatile products formed at the generator electrode.
We demonstrate the application of the 6-electrode cell for the oxygen reduction reaction in Li+-containing DMSO based electrolyte. We will show that soluble products that react at the detection electrode are due to the oxidation of superoxide.