Eco-friendly hydrothermal synthesis of Co3O4-based NiO–Fe2O3 binary and ternary nanocomposites for electrochemical energy storage applications

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-08-19 DOI:10.1016/j.elecom.2025.108035

Khalid Saifullah , Kamran Ullah , Najmul Hassan , Tayyaba Shireen , Salah Knani , Vineet Tirth , Ali Algahtani , Abid Zaman

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引用次数: 0

Abstract

The increasing global demand for advanced energy storage technologies necessitates the development of high-performance materials. In this study, Co₃O₄-based NiO-Fe₂O₃ binary and ternary nanocomposites were synthesized via a green hydrothermal method using banana peel extract as a sustainable reducing agent. The Phase analysis, microstructural, elemental composition, electrochemical, and magnetic properties of synthesized materials were analyzed using X-ray diffractions (XRD), scanning electron microscope (SEM), energy dispersive x-rays (EDX), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and vibrating sample magnetometry (VSM) technique. XRD analysis confirmed the coexistence of binary (NiO-Co₃O₄) and ternary Fe₂O₃-NiO-Co₃O₄ phases in the nanocomposite. The surface morphology analysis showed the presence of spherical and round-like shape. Electrochemical analysis revealed a high specific capacity of 2692 mAh g⁻¹ for the Fe₂O₃-NiO-Co₃O₄ nanocomposite, significantly surpassing the binary compound. The corresponding energy densities were 391.2, 363.2, 328.2 J/mA.cm⁻², with Tafel slopes of 112, 129, and 118 mV/dec, respectively. The VSM results indicated retentivity values of 1.49, 2.53, and 1.03 emu/g for NiO/Co₃O₄, Fe₂O₃/Co₃O₄, and Fe₂O₃/NiO/Co₃O₄ nanocomposite. The energy dispersive x-rays (EDX) spectroscopy confirmed the presence of Co, O, Fe, and Ni elements. These findings highlight the potential of Co₃O₄-based NiO/Fe₂O₃ nanocomposites as promising candidates for high performance energy and data storage applications.

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生态友好型水热合成co3o4基NiO-Fe2O3二元和三元纳米复合材料的电化学储能应用

全球对先进储能技术日益增长的需求要求高性能材料的发展。本研究以香蕉皮提取物为可持续还原剂，采用绿色水热法制备了co3o4基NiO-Fe2O3二、三元纳米复合材料。采用x射线衍射（XRD）、扫描电镜（SEM）、能量色散x射线（EDX）、循环伏安法（CV）、电化学阻抗谱（EIS）、线性扫描伏安法（LSV）和振动样品磁强计（VSM）技术对合成材料的物相分析、微观结构、元素组成、电化学和磁性能进行了分析。XRD分析证实了复合材料中存在二元（NiO-Co3O4）相和三元Fe2O3-NiO-Co3O4相。表面形貌分析显示为球形和圆形。电化学分析表明，Fe2O3-NiO-Co3O4纳米复合材料的比容量高达2692 mAh g−1，明显优于二元化合物。对应的能量密度分别为391.2、363.2、328.2 J/mA。cm−2，塔菲尔斜率分别为112、129和118 mV/dec。VSM结果表明，NiO/Co3O4、Fe2O3/Co3O4和Fe2O3/NiO/Co3O4纳米复合材料的保留率分别为1.49、2.53和1.03 emu/g。能量色散x射线（EDX）光谱证实了Co， O， Fe和Ni元素的存在。这些发现突出了基于co3o4的NiO/Fe2O3纳米复合材料作为高性能能源和数据存储应用的有希望的候选者的潜力。

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.