Development of highly active molecular electrocatalysts for fuel-forming reactions has relied heavilyo nu nderstanding mechanistic aspects of the electrochemical transformations.C areful fine-tuning of the ligand environment oriented mechanistic pathways towards highera ctivity and optimal product distribution for several catalysts. Unfortu-nately,m anyc atalysts deactivate in bulk electrolysis conditions, diminishing the impact of the plethora of highly tuned moleculare lectrocatalytic systems. This Minireview covers classical and emergingm ethods developed to circumvent catalystd eactivation and degradation, with an emphasis on successes with molecular electrocatalysts.

Through the power of electrochemical methods, the study of molecular electrocatalysts has proven a valuable tool to uncover mechanistic insights in catalytic transformations. This has been particularly true for energy storing transformations involving the movements of protons and electrons. Unfortunately, electrocatalysts can deactivate in bulk electrolysis conditions, diminishing the impact of the plethora of highly tuned molecular electrocatalytic systems. In their Minireview on page 3991 ff., N. Elgrishi et al. cover classical and emerging methods developed to avoid catalyst deactivation and degradation, with an emphasis on successes with molecular electrocatalysts.