析氧
分解水
材料科学
钙钛矿(结构)
催化作用
兴奋剂
化学工程
钴
灵活性(工程)
形态学(生物学)
电化学
无机化学
纳米技术
物理化学
冶金
化学
电极
光电子学
工程类
统计
生物
光催化
生物化学
遗传学
数学
作者
Jie Dai,Yinlong Zhu,Yijun Zhong,Jie Miao,Bo-Wen Lin,Wei Zhou,Zongping Shao
标识
DOI:10.1002/admi.201801317
摘要
Abstract The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost‐effective iron‐based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO 3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co‐/Ni‐rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.
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