铱
锰酸盐
锶
电催化剂
锰
析氧
无机化学
掺杂剂
化学
材料科学
催化作用
电化学
兴奋剂
电极
有机化学
物理化学
功率(物理)
物理
光电子学
电池(电)
量子力学
作者
P. F. Wang,Changle Zhang,Jiabao Ding,Yujin Ji,Youyong Li,Weifeng Zhang
出处
期刊:Small
[Wiley]
日期:2023-10-27
标识
DOI:10.1002/smll.202305662
摘要
The search for high-performance and low-cost electrocatalysts in acid conditions still remains a challenging target. Herein, iridium (Ir) doped strontium manganate (named as Irx -SMO) is proposed as an efficient and durable low-iridium electrocatalyst for water oxidation in acidic media. The Ir0.1 -SMO with 75% less iridium in comparison to that of iridium dioxide (IrO2 ) exhibits excellent performance for oxygen evolution reaction (OER), which is even better than most of the iridium-based oxide electrocatalysts. The theoretical outcomes confirm the activation of the inert manganese sites in strontium manganate by the incorporation of iridium dopants. This work reveals the boosted effect of the iridium dopants on the OER activity of strontium manganate, providing a strategy to tune the activity of manganese-based perovskites in electrocatalysis.
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