CoSe2@Co3O4 nanostructures: A promising catalyst for oxygen evolution reaction in alkaline media

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-01-01 DOI:10.1016/j.catcom.2023.106830

Abdul Hanan , Muhammad Yameen Solangi , Muhammad Nazim Lakhan , Abdulaziz Alhazaa , Muhammad Ali Shar , Abdul Jaleel Laghari , Imtiaz Ali Soomro , Muhammad Ishaque Abro , Mukesh Kumar , Umair Aftab

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Abstract

Synergistic integration based on some transition-metal (TM) derived compounds is a unique and appealing technique, especially toward oxygen evolution reaction (OER) under alkaline circumstances. Herein, we present a cobalt-selenide (CoSe₂) and cobalt-oxide (Co₃O₄) based composite (CSCO-2) material through a wet chemical method. As-prepared catalyst has been analyzed for various physicochemical characterizations. CSCO-2 offers efficient OER performance in 1.0 M KOH with an overpotential of 252 mV at current density of 20 mA/cm², with a low Tafel slope value of 69 mV/dec. Importantly, as-prepared catalyst shows stability of 48 h for longer electrochemical performance as a potential candidate for OER.

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CoSe2@Co3O4 纳米结构：碱性介质中氧进化反应的理想催化剂

基于某些过渡金属（TM）衍生化合物的协同集成是一种独特而有吸引力的技术，特别是在碱性环境下的氧进化反应（OER）方面。在此，我们通过湿化学方法介绍了一种基于硒化钴（CoSe2）和氧化钴（Co3O4）的复合材料（CSCO-2）。对制备的催化剂进行了各种物理化学特性分析。CSCO-2 在 1.0 M KOH 中具有高效的 OER 性能，电流密度为 20 mA/cm2 时过电位为 252 mV，Tafel 斜坡值低至 69 mV/dec。重要的是，制备的催化剂具有 48 小时的稳定性，可提供更长的电化学性能，是 OER 的潜在候选催化剂。

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

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.