过电位
钴
析氧
塔菲尔方程
材料科学
过渡金属
无机化学
分解水
催化作用
高分子化学
化学工程
光化学
化学
电极
电化学
物理化学
冶金
有机化学
作者
Mengyang Ye,Shuang Li,Xiaojia Zhao,Nadezda V. Tarakina,Christian Teutloff,Wing Ying Chow,Robert Bittl,Arne Thomas
标识
DOI:10.1002/adma.201903942
摘要
Abstract Poly(heptazine imides) hosting cobalt ions as countercations are presented as promising electrocatalysts for the oxygen evolution reaction (OER). A facile mixed‐salt melt‐assisted condensation is developed to prepare such cobalt poly(heptazine imides) (PHI‐Co). The Co ions can be introduced in well‐controlled amounts using this method, and are shown to be atomically dispersed within the imide‐linked heptazine matrix. When applied to electrocatalytic OER, PHI‐Co shows a remarkable activity with an overpotential of 324 mV and Tafel slope of 44 mV dec −1 in 1 m KOH.
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