基于NiCo2O4纳米片一步微波辐照的可持续储能装置

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-07-17 DOI:10.1016/j.materresbull.2025.113664

Bindu Mishra , P Sivaraman , Navinchandra Shimpi

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引用次数: 0

摘要

采用微波辐照法制备了NiCo2O4纳米片。采用XRD、FTIR、SAED、SEM、HR-TEM和XPS对合成的NiCo2O4 NFs进行表征。用Debye-Scherrer公式计算得到的晶粒尺寸为~ 7.86，用SEM/TEM证实了纳米片的形貌。通过循环伏安法（CV）、恒流充放电法（GCD）和电化学阻抗谱法（EIS）等电化学研究来评价其性能。在三电极系统中，NiCo2O4 NFs在5 mv -⁻¹的扫描速率下显示出932 F - g的高比电容，在5 mg -⁻¹的扫描速率下，在2000次循环后仍保持97.37%的比电容。不对称超级电容器装置（NiCo2O4 ||6 M KOH|| AC）提供的最大能量密度为25.90 Wh Kg⁻¹，功率密度为96.92 W Kg⁻¹。由于快速的氧化还原活性和优异的电子离子传输，NiCo2O4 NFs具有优异的性能，可用于具有优异功率密度的高性能超级电容器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Sustainable energy storage device based on NiCo2O4 nanoflakes via one step microwave irradiation

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Sustainable energy storage device based on NiCo2O4 nanoflakes via one step microwave irradiation

NiCo₂O₄ nanoflakes (NFs) were synthesized by microwave irradiation method. Characterization of the synthesized NiCo₂O₄ NFs was done using XRD, FTIR, SAED, SEM, HR-TEM and XPS. The crystallite size calculated using Debye-Scherrer formula was found to be ∼7.86 and nanoflake morphology was confirmed using SEM/TEM. Electrochemical studies, including cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS), were conducted to evaluate the performance. In a three-electrode system, NiCo₂O₄ NFs demonstrated a high specific capacitance of 932 F g⁻¹ at a scan rate of 5 mVs⁻¹ and retained 97.37% capacitance after 2000 cycles at 5 A g⁻¹. Asymmetric supercapacitor device (NiCo₂O₄ ||6 M KOH|| AC) delivered a maximal energy density of 25.90 Wh Kg⁻¹ and power density of 96.92 W Kg⁻¹. Due to rapid redox activity and superior electron-ion transport, NiCo₂O₄ NFs exhibited excellent properties for usage in high performance supercapacitors with exceptional power density.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.