Cobalt-Exchanged Poly(Heptazine Imides) as Transition Metal–Nx Electrocatalysts for the Oxygen Evolution Reaction

IF 27.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2020-01-27 DOI:10.1002/adma.201903942

Meng-Yang Ye, Shuang Li, Xiaojia Zhao, Nadezda V. Tarakina, Christian Teutloff, Wing Ying Chow, Robert Bittl, Arne Thomas

引用次数: 40

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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钴交换聚七嗪酰亚胺作为析氧反应过渡金属- nx电催化剂

载钴离子的聚七嗪亚胺是一种很有前途的析氧反应电催化剂。研制了一种简便的混合盐熔融辅助缩合法制备这种钴聚七嗪亚胺(pi - co)。使用这种方法可以以良好控制的量引入Co离子，并且显示出在亚胺连接的七嗪基体中原子分散。当应用于电催化OER时，ph - co表现出显著的活性，在1 m KOH下过电位为324 mV, Tafel斜率为44 mV dec−1。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.