Sustainable microwave-assisted crafting of CoZrO3@Graphene nanoplatelets nanocomposites for advanced asymmetric supercapacitors

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-02-25 DOI:10.1016/j.solidstatesciences.2025.107881

J. John Benitto, J. Judith Vijaya

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Abstract

In response to the growing energy crisis driven by rapid urbanization and population growth, the research investigates the development of high-performance supercapacitor electrode materials. Specifically, CoZrO₃ and its composite with graphene nanoplatelets (GNP) were synthesized using a microwave-assisted combustion method. Structural and morphological characteristics were confirmed by X-ray Diffraction (XRD), Fourier Transform Raman, UV–vis diffuse reflectance spectroscopy (UV-DRS), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and N₂ adsorption/desorption studies. The prepared CoZrO₃@GNP nanocomposites exhibited exemplary electrochemical performance by achieving a maximum specific capacitance of 1003 F g⁻¹ at a current density of 2 A g⁻¹. An asymmetric supercapacitor device fabricated with this nanocomposite demonstrated a specific capacitance of 129.05 F g⁻¹ at 2 A g⁻¹, maintaining 89 % of its initial capacitance after 2000 cycles and delivering an energy density of 165.18 W h kg⁻¹ and maximum power density of 9.14 W kg⁻¹. The significant improvements are attributed to the synergistic effects of the GNP integration, highlighting the potential of CoZrO₃@GNP as a viable electrode material for advanced energy storage applications.

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用于先进不对称超级电容器的CoZrO3@Graphene纳米片纳米复合材料的可持续微波辅助工艺

为了应对快速城市化和人口增长所带来的日益严重的能源危机，本研究探讨了高性能超级电容器电极材料的发展。具体而言，采用微波辅助燃烧的方法合成了CoZrO3及其与石墨烯纳米片（GNP）的复合材料。通过x射线衍射（XRD）、傅里叶变换拉曼（Fourier Transform Raman）、紫外-可见漫反射光谱（UV-DRS）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、x射线光电子能谱（XPS）和N2吸附/脱附研究证实了其结构和形态特征。制备的CoZrO3@GNP纳米复合材料在电流密度为2 a g−1时的最大比电容达到1003 F g−1，表现出优异的电化学性能。用该纳米复合材料制备的非对称超级电容器器件在2 a g−1时的比电容为129.05 F g−1，在2000次循环后保持初始电容的89%，能量密度为165.18 W h kg−1，最大功率密度为9.14 W kg−1。显著的改进归功于GNP集成的协同效应，突出了CoZrO3@GNP作为先进储能应用的可行电极材料的潜力。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.