In Situ Coupling Strategy for the Preparation of FeCo Alloys and Co4N Hybrid for Highly Efficient Oxygen Evolution,Advanced Materials

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In Situ Coupling Strategy for the Preparation of FeCo Alloys and Co4N Hybrid for Highly Efficient Oxygen Evolution
Advanced Materials ( IF 27.4 ) Pub Date : 2017-10-25 , DOI: 10.1002/adma.201704091
Xiang Zhu ₁ , Tian Jin _{1,

2} , Chengcheng Tian ₁ , Chenbao Lu ₃ , Xiaoming Liu ₄ , Min Zeng ₅ , Xiaodong Zhuang ₃ , Shize Yang ₄ , Lin He ₅ , Honglai Liu ₂ , Sheng Dai _{1,

4}

Affiliation

An in situ coupling approach is developed to create a new highly efficient and durable cobalt‐based electrocatalyst for the oxygen evolution reaction (OER). Using a novel cyclotetramerization, a task‐specific bimetallic phthalocyanine‐based nanoporous organic framework is successfully built as a precursor for the carbonization synthesis of a nonprecious OER electrocatalyst. The resultant material exhibits an excellent OER activity with a low overpotential of 280 mV at a current density of 10 mA cm⁻² and high durability in an alkaline medium. This impressive result ranks among the best from known Co‐based OER catalysts under the same conditions. The simultaneous installation of multiple diverse cobalt‐based active sites, including FeCo alloys and Co₄N nanoparticles, plays a critical role in achieving this promising OER performance. This innovative approach not only enables high‐performance OER activity to be achieved but simultaneously provides a means to control the surface features, thereby tuning the catalytic property of the material.

中文翻译：

FeCo合金与Co4N杂化材料制备的原位耦合策略，用于高效析氧

开发了一种原位偶联方法，以创建一种新的高效耐用的钴基电催化剂用于氧释放反应（OER）。通过新颖的环四聚反应，成功构建了基于任务的双金属酞菁纳米多孔有机骨架，作为非贵重OER电催化剂碳化合成的前驱体。所得材料显示出优异的OER活性，在10mA cm ^-2的电流密度下具有280mV的低过电势，并且在碱性介质中具有高耐久性。在相同条件下，这一令人印象深刻的结果在已知的钴基OER催化剂中名列前茅。同时安装多个钴基活性位点，包括FeCo合金和Co ₄N纳米颗粒在实现这一有希望的OER性能中起着至关重要的作用。这种创新的方法不仅可以实现高性能的OER活性，而且还提供了一种控制表面特征的方法，从而调节了材料的催化性能。

更新日期：2017-10-25

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