过电位
电催化剂
析氧
氧化钌
化学
氧化物
铱
材料科学
钌
化学工程
无机化学
铬
电化学
氧气
催化作用
物理化学
电极
冶金
有机化学
工程类
作者
Yichao Lin,Ziqi Tian,Linjuan Zhang,Jingyuan Ma,Zheng Jiang,Benjamin J. Deibert,Ruixiang Ge,Liang Chen
标识
DOI:10.1038/s41467-018-08144-3
摘要
The development of active, acid-stable and low-cost electrocatalysts for oxygen evolution reaction is urgent and challenging. Herein we report an Iridium-free and low ruthenium-content oxide material (Cr0.6Ru0.4O2) derived from metal-organic framework with remarkable oxygen evolution reaction performance in acidic condition. It shows a record low overpotential of 178 mV at 10 mA cm-2 and maintains the excellent performance throughout the 10 h chronopotentiometry test at a constant current of 10 mA cm-2 in 0.5 M H2SO4 solution. Density functional theory calculations further revealed the intrinsic mechanism for the exceptional oxygen evolution reaction performance, highlighting the influence of chromium promoter on the enhancement in both activity and stability.
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