Tuning hydrogen binding modes within RuO2 lattice by proton and electron co-doping for active and stable acidic oxygen evolution
Chem Catalysis(2022)
摘要
Solid polymer electrolyzer (SPE), which directly uses pure water as electrolyte, holds great promise for green hydrogen production, yet developing a durable and active electrocatalyst for a proton-rich anode remains a bottleneck issue owing to the high catalyst dissolution under polarization potential. Here, proton and electron co-doping was employed to construct an Ru-O-H···O bond within RuO2 lattice, and the hydrogen binding modes not only engineered the electronic interaction between Ru and O atoms but also formed a hydrogen bond, which was demonstrated to be an effective way to increase the electrocatalytic activity and stabilize the lattice oxygen. The intrinsic activity of representative 75-H-RuO2 loaded on a glassy carbon electrode was almost ten times that of the pristine one, only requiring an overpotential of 200 mV (@10 mA cm−2). Moreover, it demonstrated ideal stability (@0.5 A cm−2) in the SPE device.
更多查看译文
关键词
RuO2,hydrogen doping,oxygen evolution reaction,acid electrolyte,solid polymer electrolyzer
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要