"Pit-dot" ultrathin nanosheets of hydrated copper pyrophosphate as efficient pre-catalysts for robust water oxidation

Herein, hydrated copper pyrophosphate ultrathin nanosheets with a unique "pit-dot" nanostructure were fabricated as efficient pre-catalysts for the oxygen evolution reaction, and systematic post-catalytic characterization studies confirmed the important role of the boosted pre-oxidation reaction in promoting the OER catalysis. "Pit-dot" Cu 2 P 2 O 7 ·3H 2 O ultrathin nanosheets with boosted pre-oxidation behavior were fabricated as efficient pre-catalysts for highly efficient and durable oxygen evolution reactions.