钴交换的聚（七嗪酰亚胺）作为用于析氧反应的过渡金属 - N 电催化剂
Cobalt-Exchanged Poly(Heptazine Imides) as Transition Metal-N Electrocatalysts for the Oxygen Evolution Reaction.
作者信息
Ye Meng-Yang, Li Shuang, Zhao Xiaojia, Tarakina Nadezda V, Teutloff Christian, Chow Wing Ying, Bittl Robert, Thomas Arne
机构信息
Department of Chemistry, Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623, Berlin, Germany.
Max Planck Institute of Colloids & Interfaces, Department of Colloid Chemistry, D-14476, Potsdam, Germany.
出版信息
Adv Mater. 2020 Mar;32(9):e1903942. doi: 10.1002/adma.201903942. Epub 2020 Jan 27.
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 in 1 m KOH.
以钴离子作为抗衡阳离子的聚（庚嗪酰亚胺）被认为是一种有前景的析氧反应（OER）电催化剂。本文开发了一种简便的混合盐熔体辅助缩合方法来制备这种钴聚（庚嗪酰亚胺）（PHI-Co）。使用该方法可以精确控制钴离子的引入量，并且显示出钴离子以原子级分散在酰亚胺连接的庚嗪基质中。当应用于电催化析氧反应时，PHI-Co在1 m KOH中表现出显著的活性，过电位为324 mV，塔菲尔斜率为44 mV dec。
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