A durable self-adhesive high-entropy oxide sub-nanowire electrocatalyst

Nature Nanotechnology, Published online: 13 May 2026; doi:10.1038/s41565-026-02183-4 Seawater electrolysis is limited by the challenge of achieving both high catalyst activity and stability. Now, a self-adhesive monolithic electrocatalyst composed of high-entropy oxide sub-nanowires is developed that addresses this trade-off. Combining sub-nanoscale confinement with a high-entropy composition, the catalyst enables efficient lattice oxygen activation while maintaining structural integrity, achiev