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Updated: May 11, 2026

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Bio-Inspired Stable {Co4O4} Molecular Catalyst for the Oxygen Evolution Reaction
1Department of Chemistry, University of Zurich, CH-8057 Zurich. shangkun.li@chem.uzh.ch.
Abstract:
Developing stable and efficient molecular water oxidation catalysts is crucial for renewable energy conversion. Cubic {Co4O4} complexes are promising oxygen-evolution-reaction (OER) catalysts because they combine molecular precision with bio-inspired design, but their operational stability remains a challenge. Inspired by the oxygen-evolving complex of photosystem II, we immobilize {Co4O4} cubane oxo clusters within a conductive polymer. Using polypyrrole as a p-type conducting polymer enhances hole transport during OER, resulting in a higher turnover frequency than the pristine {Co4O4} cluster and cobalt oxide benchmarks. The asymmetric coordination further improves stability and catalytic efficiency by exposing an active cofacial dihydroxide motif.[1].
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