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Breaking Activity-Stability Trade-off in Chlorine Electrolysis via Grain Boundary Engineering
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DOI：10.1016/j.apcatb.2026.126929.png)
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Abstract
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• The grain boundary (GB) engineering in a non-precious Co3O4 catalyst breaks the CER’s intrinsic activity-stability trade-off. • GB-induced compressive strain lowers the rate-determining step (Volmer-Krishtalik) barrier and increases the Co dissolution energy. • The GB-Co3O4 catalyst exhibits ultralow overpotential of 36 mV and demonstrates ultralow voltage decay rate of 0.8mVh−1.
Keywords:
Grain boundary engineering
Co3O4 catalyst
Chlorine electrolysis
Activity-stability trade-off
Compressive strain
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