The development of high-performance and cost-effective electrocatalysts for oxygen evolution reactions (OER) is key to renewable energy conversion and storage technologies. In this paper, a hierarchical Co(OH)-MoO nanosheets with petal-like architecture was prepared by a simple one-step hydrothermal method using ZIF-67/NF as a precursor, and it was used as a direct electrocatalyst for OER. Notably, this petal-like Co(OH)-MoO/NF layered nanosheets not only prevent the agglomeration of nanostructured material, but also facilitate the complete penetration and diffusion of electrolyte.In addition, due to the strong electronic interaction between Co(OH) and MoO in the Co(OH)-MoO/NF system, Co(OH)-MoO/NF exhibits excellent electrocatalytic OER performance. It has a low overpotential of 273 mV at 10 mA cm and excellent stability.This study provides a simple and effective strategy for the rational design and structural evolution of MOF-derived materials to achieve inexpensive and effective electrocatalysis.

中文翻译：

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ZIF-67衍生的花瓣状Co(OH)2-MoO3/NF层状纳米片作为析氧反应的有前途的电催化剂

开发用于析氧反应（OER）的高性能且具有成本效益的电催化剂是可再生能源转换和存储技术的关键。本文以ZIF-67/NF为前驱体，通过简单的一步水热法制备了具有花瓣状结构的多级Co(OH)-MoO纳米片，并将其用作OER的直接电催化剂。值得注意的是，这种花瓣状的Co(OH)-MoO/NF层状纳米片不仅可以防止纳米结构材料的团聚，而且有利于电解质的完全渗透和扩散。此外，由于Co(OH)3之间强烈的电子相互作用Co(OH)-MoO/NF体系中的MoO和MoO，Co(OH)-MoO/NF表现出优异的电催化OER性能。它在10 mA cm下具有273 mV的低过电势和优异的稳定性。本研究为MOF衍生材料的合理设计和结构演化以实现廉价且有效的电催化提供了一种简单有效的策略。