Ru@MnO2 core@shell nanowires as a bifunctional electrocatalyst for efficient solar-driven seawater splitting†

Abstract

Seawater electrolysis technology for hydrogen production has attracted worldwide attention due to the abundant seawater resources. Herein, we proposed core–shell Ru@MnO₂ nanowires (NWs) with α/β-MnO₂ NWs as the core and amorphous Ru as the shell, in which the Ru@α-MnO₂ NWs exhibited lower overpotential and better stability. More importantly, they can operate stably as a bifunctional catalyst for more than 250 h and maintain excellent catalytic performance when driven by solar energy.