Simple and Scalable Introduction of Single-Atom Mn on RuO2 Electrocatalysts for Oxygen Evolution Reaction with Long-Term Activity and Stability

• DOI: 10.1021/jacs.5c01886
• Publication Date: 2025-05-13T03:33:44Z
• Authors: Zhong-Hua Xue; Javeed Mahmood; Yuxuan Shang; Guanxing Li; Seok-Jin Kim; Yu Han; Cafer T. Yavuz
• Keywords: Oxygen evolution

Electrochemical oxygen evolution reaction (OER) is the bottleneck for realizing renewable powered green hydrogen production through water splitting due to challenges of electrode stability under harsh oxidative environments and electrolytes with extreme acidity basicity. Here, we introduce a single-atom manganese-incorporated ruthenium oxide electrocatalyst via facile impregnation approach catalyzing OER across wide pH range, while solving issues RuO2. The modified catalyst maintains over 1000 h, delivering current density 10 mA cm-2 at 213 mV overpotential in acid (pH 0), 570 potassium bicarbonate 8.8), 293 alkaline media 14), demonstrating exceptional durability various conditions. When used as an anode realistic water-splitting systems, Mn-modified RuO2 performs voltage 1.69 V (Nafion 212 membrane) proton-exchange membrane electrolysis, 1.84 (UTP 220 diaphragm) exhibiting low degradation verifying its substantial potential practical applications.