Laboratory study demonstrates stabilization of amorphous ruthenium oxide heterostructures during acidic water oxidation, highlighting a pathway for durable electrolyzers.
Key Points
Ultrathin amorphous ruthenium oxide stabilized on alpha-mno2 nanorods prevents rapid corrosion during the acidic oxygen evolution reaction while maintaining high activity.
The MnO2@a-RuOx electrocatalyst requires an overpotential of 128 mV at 10 mA cm-2 in 0.1 M HClO4 and achieves 1 A cm-2 at 1.71 V in a proton exchange membrane electrolyzer.
Extensive characterizations indicate the heterointerface enables an adsorbent evolution mechanism without lattice oxygen loss, offering a route for robust electrocatalysts.