High-entropy LDH coupled with Ru nanoclusters for efficient overall seawater splitting

This study reports a bifunctional high-entropy MnFeCoNiCu LDH electrocatalyst decorated with Ru nanoclusters for durable seawater electrolysis. The heterostructure facilitates efficient charge transfer, delivering a low cell voltage of 1.70 V at 10 mA cm−2 for overall seawater splitting. Remarkably, it sustains stable operation for 50 hours at an industrial current density of 300 mA cm−2. Theoretical insights suggest that the Ru nanoclusters optimize the electronic structure, establishing a promising route for large-scale green hydrogen production.