Interface engineering breaks both stability and activity limits of RuO2 for sustainable water oxidation

Abstract Designing catalytic materials with enhanced stability and activity is crucial for sustainable electrochemical energy technologies. RuO 2 is the most active material for oxygen evolution reaction (OER) in electrolysers aiming at producing ‘green’ hydrogen, however it encounters critical electrochemical oxidation and dissolution issues during reaction. It remains a grand challenge to achieve stable and active RuO 2 electrocatalyst as the current strategies usually enhance one of the two properties at the expense of the other. Here, we report breaking the stability and activity limits of RuO 2 in neutral and alkaline environments by constructing a RuO 2 /CoO x interface. We demonstrate that RuO 2 can be…

• NN
  National Natural Science Foundation of China

  Awards: 63213042, 21773124, 52071231, 21933006, 19JCJQJC61900, 51722103
• NU
  Nankai University

  Awards: 63221346, 63213042, ZB22000103
• NS
  Natural Science Foundation of Tianjin City

  Award: 19JCJQJC61900
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 63213042, 63221346, ZB22000103