74 Benchmarking the stability of OER catalysts
to evaluate lifetimes and predict sudden death of similar electrodes for electrolysis.
In fact, short term testing with accurate measurements of mass losses
yields valuable information compared to tests where purely electrochemical data
is produced. This is emphasized by the MnOx catalyst shown here, which is
predicted to last for more than two hours per nanometer at 1.8 VRHE or more
than 200 hours for a 100 nm thick lm. Finally, these methods are not limited
to the evaluation of oxygen evolution catalysts, but could be adapted to most
electrochemical systems where catalysts are subjected to harsh and corrosive
environments.
