High-performance Mn doped NiCo2O4 binder free electrode for supercapacitor application

被引：0

作者：

Ganiger, Shivashankar ^{[1
]}

Jituri, S.D. ^{[2
]}

Chavan, Geeta ^{[3
]}

Mujawar, S.H. ^{[2
]}

Naik, L.R. ^{[1
]}

机构：

[1] Department of Studies in Physics and Electronics, Karnatak University, Dharwad

[2] Department of Physics, Yashavantrao Chavan Institute of Science Satara, Karmaveer Bhaurao Patil, University, Maharashtra, Satara

[3] Department of Physics, Karnatak Science College, Dharwad

来源：

Interactions | 2025年 / 246卷 / 01期

关键词：

Energy and power density; Hydrothermal; Nanoneedle; Supercapacitor;

D O I：

10.1007/s10751-025-02289-6

中图分类号：

学科分类号：

摘要：

The ongoing energy crisis and rapid industrialization have intensified the need for sustainable and cost-effective energy storage devices. Over the years, scientists have explored numerous electrode materials for supercapacitor applications. Among these, metal oxides have garnered significant attention due to their potential for high-performance energy storage. In this study, we report novel nanoneedle-structured Mn-doped NiCo2O4 electrode for electrochemical supercapacitor. A simple in-situ hydrothermal method was employed to synthesize Mn doped NiCo2O4 electrodes. The effect of physicochemical properties on doping was analyzed using various characterization techniques. X-ray diffraction (XRD) confirmed the formation of a single-phase spinel structure. Scanning Electron Microscopy (SEM) revealed a well-defined nanoneedle-like morphology. Energy-dispersive X-ray spectroscopy (EDX) confirmed the elemental composition and purity of the synthesized samples. Fourier-transform infrared (FT-IR) spectroscopy further validated the presence of tetrahedral and octahedral coordination sites. Electrochemical characterization was conducted using a three-electrode system in 1 M KOH electrolyte. The Mn doped NiCo2O4 electrode exhibited an enhanced specific capacitance of 1377 Fg⁻¹ at a current density of 1 Ag⁻¹. Furthermore, a symmetric supercapacitor based on Mn doped NiCo2O4 demonstrated a high energy density of 21.8 Wh-kg⁻¹ at a power density of 500 W-kg⁻¹. The device also exhibited excellent cyclic stability, highlighting the potential of Mn doped NiCo2O4 as a promising electrode material for supercapacitor applications. Compared to previously reported Mn-doped NiCo2O4 systems, this work demonstrates significantly improved performance, attributed to the unique nanoneedle morphology and optimized doping strategy. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

引用

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