Here, ferrocene(Fc)‐incorporated cobalt sulfide (Co_x S_y ) nanostructures directly grown on carbon nanotube (CNT) or carbon fiber (CF) networks for electrochemical oxygen evolution reaction (OER) using a facile one‐step solvothermal method are reported. The strong synergistic interaction between Fc‐Co_x S_y nanostructures and electrically conductive CNTs results in the superior electrocatalytic activity with a very small overpotential of ≈304 mV at 10 mA cm⁻² and a low Tafel slope of 54.2 mV dec⁻¹ in 1 m KOH electrolyte. Furthermore, the Fc‐incorporated Co_x S_y (FCoS) nanostructures are directly grown on the acid pretreated carbon fiber (ACF), and the resulting fabricated electrode delivers excellent OER performance with a low overpotential of ≈315 mV at 10 mA cm⁻². Such superior OER catalytic activity can be attributed to 3D Fc‐Co_x S_y nanoarchitectures that consist of a high concentration of vertical nanosheets with uniform distribution of nanoparticles that afford a large number of active surface areas and edge sites. Besides, the tight contact interface between ACF substrate and Fc‐Co_x S_y nanostructures could effectively facilitate the electron transfer rate in the OER. This study provides valuable insights for the rational design of energy storage and conversion materials by the incorporation of other transition metal into metal sulfide/oxide nanostructures utilizing metallocene.

中文翻译：

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二茂铁结合的硫化钴纳米结构可实现出色的析氧反应。

在这里，报道了使用简便的一步溶剂热法直接在碳纳米管（CNT）或碳纤维（CF）网络上生长的二茂铁（Fc）结合的硫化钴（Co _x S _y ）纳米结构，用于电化学放氧反应（OER）。 。Fc-Co _x S _y 纳米结构与导电CNT之间的强协同作用导致优异的电催化活性，在10 mA cm ^-2时的超电势约为304 mV，Tafel斜率低，为54.2 mV dec ^-1 in 1 m KOH电解质。此外，掺有Fc的Co _x S _y （FCoS）纳米结构直接在经过酸预处理的碳纤维（ACF）上生长，所得的制成电极可提供出色的OER性能，在10 mA cm ^-2时的低过电势约为315 mV 。如此出色的OER催化活性可归因于3D Fc-Co _x S _y 纳米结构，该结构由高浓度的垂直纳米片组成，纳米粒子分布均匀，提供大量的活性表面积和边缘部位。此外，ACF底物与Fc-Co _x S _y之间的紧密接触界面 纳米结构可以有效地促进OER中的电子转移速率。这项研究通过使用茂金属将其他过渡金属掺入金属硫化物/氧化物纳米结构中，为合理设计能量存储和转换材料提供了宝贵的见识。