Improved Electrochemical Performance of Co3O4 Incorporated MnO2 Nanowires for Energy Storage Applications

IF 2.6 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Arabian Journal for Science and Engineering Pub Date : 2024-10-17 DOI:10.1007/s13369-024-09421-8

Md. Hasive Ahmad, Md. Roxy Islam, Muhammad Rakibul Islam

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Abstract

In this paper, cobalt oxide incorporated manganese dioxide nanowires (α-MnO₂@Co₃O₄) have been synthesized by a facile hydrothermal method. The surface morphological, structural, chemical bonding, and electrochemical properties of α-MnO₂@Co₃O₄ at different concentrations (1, 3, 5, 7 wt%) Co₃O₄ nanoparticles (NPs) were studied. The morphological analysis reveals that the Co₃O₄ nanoparticles are attached to the surface of randomly oriented MnO₂ nanowires. The surface chemical state investigation reveals the formation of oxygen vacancy in the nanocomposite (NC) due to the incorporation of Co₃O₄ NPs. Incorporation of Co₃O₄ was also found to improve the electrochemical performance of the nanocomposite. The hydrothermally produced α-MnO₂@Co₃O₄ nanocomposite exhibits the highest specific capacitance of 654.57 Fg⁻¹ at a current density of 0.15 Ag⁻¹. The unique structure and the presence of oxygen vacancy of the hetero-structured α-MnO₂@Co₃O₄ electrode enable rapid electron and ion transport, resulting in improved capacitive performance. The distinctive α-MnO₂@Co₃O₄ nanocomposite may offer a novel route for advanced energy storage applications.

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用于储能的Co3O4掺杂MnO2纳米线电化学性能的改进

本文采用水热法合成了氧化钴掺杂二氧化锰纳米线（α-MnO2@Co3O4）。研究了α-MnO2@Co3O4在不同浓度（1、3、5、7 wt%） Co3O4纳米粒子（NPs）下的表面形貌、结构、化学键和电化学性能。形貌分析表明，Co3O4纳米粒子附着在随机取向的二氧化锰纳米线表面。纳米复合材料（NC）的表面化学态分析表明，co3o4nps的加入导致了氧空位的形成。Co3O4的加入也改善了纳米复合材料的电化学性能。当电流密度为0.15 Ag−1时，水热法制备的α-MnO2@Co3O4纳米复合材料的比电容最高为654.57 Fg−1。异质结构α-MnO2@Co3O4电极的独特结构和氧空位的存在使电子和离子快速传递，从而提高了电容性能。独特的α-MnO2@Co3O4纳米复合材料可能为先进的储能应用提供新的途径。

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来源期刊

Arabian Journal for Science and Engineering MULTIDISCIPLINARY SCIENCES-

CiteScore

5.70

自引率

3.40%

发文量

993

期刊介绍： King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.