Improving the bimetallic interactions of CeO2@MnO2/MXenes for supercapacitor electrode applications

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-02-27 DOI:10.1016/j.matchemphys.2025.130625

Faiz Imran , Azmat Hussain , Ibrahim Aladhyani , Fawad Ali , Shahbaz Afzal , Raphael M. Obodo

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Abstract

The characteristics of large surface area, high chemical firmness and virtuous electrical conductivity make MXene-based electrodes an emerging potential material for supercapacitor electrode applications. The qualities of invented electrodes were examined using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), UV–visible spectroscopy, and electrochemical analysis. The estimated specific capacitance of 1370 F g^-1 from cyclic voltammetry (CV) at a scan rate of 1.0 mVs⁻¹ and 1520 F g^-1 from galvanostatic charge-discharge (GCD) at 0.5 Ag^-1 current density, respectively, were obtained from the CeO₂@MnO₂/MXene electrode. The study's findings suggest that the addition of MXene caused the manufactured electrodes' electrochemical properties to improve. The electrodes CeO₂/MXene, MnO₂/MXene, and CeO₂@MnO₂/MXene have proven to be quite effective, which makes them a good option for supercapacitor electrode application. The CeO₂@MnO₂/MXene electrode was found to exhibit remarkable cyclic stability at 0.5 Ag^-1 current density, maintaining 73.5 % of its initial measurements after 10,000 full cycles.

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MXene 基电极具有比表面积大、化学稳定性高和导电性好的特点，是超级电容器电极应用的新兴潜在材料。利用 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散光谱 (EDS)、紫外可见光谱和电化学分析对所发明电极的质量进行了检测。CeO2@MnO2/MXene 电极在扫描速率为 1.0 mVs-1 的循环伏安法 (CV) 和电流密度为 0.5 Ag-1 的电静态充放电 (GCD) 条件下分别获得了 1370 F g-1 和 1520 F g-1 的估计比电容。研究结果表明，MXene 的加入改善了所制造电极的电化学性能。事实证明，CeO2/MXene、MnO2/MXene 和 CeO2@MnO2/MXene 电极都相当有效，是超级电容器电极应用的良好选择。研究发现，CeO2@MnO2/MXene 电极在 0.5 Ag-1 电流密度下表现出显著的循环稳定性，在 10,000 个完整循环后仍能保持其初始测量值的 73.5%。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.