Covalent organic framework-derived CoRu nanoalloy doped macro–microporous carbon for efficient electrocatalysis,Journal of Materials Chemistry A

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Covalent organic framework-derived CoRu nanoalloy doped macro–microporous carbon for efficient electrocatalysis
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-11-23 , DOI: 10.1039/d2ta08224a
Huihui Zhao ₁ , Xinghao Zhang ₁ , Yaowen Zhang ₂ , Yuzhuang Song ₁ , Chen Li ₁ , Kang Liu ₁ , Dingxuan Ma ₁

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Developing bifunctional electrocatalysts with high activity toward the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of great significance for sustainable energy development and environmental protection. Herein, we first report a practical and efficient strategy for the preparation of bifunctional macro–microporous COF-derived water-splitting electrocatalysts by integration of the facile ion substitution method and template-assisted method. This method has been successfully applied to obtain a representative m-CoRu@NC electrocatalyst with highly conductive N-rich graphitic carbon as the support to anchor an active bimetal CoRu nanoalloy and hierarchical macro–microporous structure. Benefitting from these advantages, m-CoRu@NC exhibits excellent HER and OER activity under alkaline conditions, even superior to those of commercial Pt/C and RuO₂. Theoretical calculations have also been conducted to understand the mechanism of superior HER performance. This work provides a new insight into the design of COF-derived multifunctional materials for electrochemical application.

中文翻译：

共价有机骨架衍生的 CoRu 纳米合金掺杂大微孔碳用于高效电催化

开发对析氢反应（HER）和析氧反应（OER）具有高活性的双功能电催化剂对于可持续能源发展和环境保护具有重要意义。在此，我们首先报告了一种实用且有效的策略，通过结合简易离子取代法和模板辅助法制备双功能大-微孔 COF 衍生的水分解电催化剂。该方法已成功应用于获得具有代表性的 m-CoRu@NC 电催化剂，该电催化剂以高导电性富 N 石墨碳为载体，以固定活性双金属 CoRu 纳米合金和分级大微孔结构。受益于这些优势，m-CoRu@NC 在碱性条件下表现出优异的 HER 和 OER 活性，₂ . 还进行了理论计算以了解优异 HER 性能的机制。这项工作为用于电化学应用的 COF 衍生多功能材料的设计提供了新的见解。

更新日期：2022-11-23

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