Electrochemical evaluation of ZnO and PAN-based carbon nanofibers composite for high-performance supercapacitor application

IF 2.6 4区化学 Q3 CHEMISTRY, PHYSICAL Ionics Pub Date : 2024-10-07 DOI:10.1007/s11581-024-05869-8

Dadaso D. Mohite, Sachin S. Chavan, Sumit Dubal, P. E. Lokhande, Vishal Kadam, Chaitali Jagtap, Udayabhaskar Rednam, Sabah Ansar, Yedluri Anil Kumar

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Abstract

The material used for electrodes greatly affects the electrochemical performance of a supercapacitor. This study utilized electrospinning to create ZnO/Polyacrylonitrile (PAN) composite-based nanofibers, which were then heat-treated to form carbon nanofibers (CNFs). The ZnO/PAN-NFs and the resulting ZnO and PAN CNFs were thoroughly characterized for their crystallographic and morphological properties. Electrodes made from ZnO and PAN-based CNFs demonstrated a peak capacitance of 163.44 F g⁻¹ at a scan rate of 10 mV s⁻¹, which is a 64% increase over electrodes made from PAN CNFs, in addition to enhanced cyclic stability and rate capability. An asymmetric supercapacitor constructed with ZnO/PAN-CNFs//AC showed an energy density of 6.1 Wh kg⁻¹ and a power density of 1000 W kg⁻¹. The device also exhibited outstanding longevity and electrochemical reversibility, maintaining 84% of its specific capacitance after 5000 cycles. This research seeks to investigate the unique structural and electrochemical properties of the electrospun ZnO/PAN nanocomposite material, contributing to the advancement of high-performance supercapacitor electrodes.

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ZnO和pan基碳纳米纤维复合材料在高性能超级电容器中的电化学评价

电极材料对超级电容器的电化学性能有很大影响。本研究利用静电纺丝技术制备了ZnO/聚丙烯腈（PAN）复合纳米纤维，然后对其进行热处理形成碳纳米纤维（CNFs）。对ZnO/PAN- nfs及其制备的ZnO和PAN CNFs进行了晶体学和形态学表征。在扫描速率为10 mV s−1时，ZnO和PAN基CNFs电极的峰值电容为163.44 F g−1，比PAN基CNFs电极提高了64%，此外还增强了循环稳定性和速率能力。用ZnO/PAN-CNFs//AC构建的非对称超级电容器的能量密度为6.1 Wh kg−1，功率密度为1000 W kg−1。该装置还表现出出色的寿命和电化学可逆性，在5000次循环后保持84%的比电容。本研究旨在探讨电纺ZnO/PAN纳米复合材料的独特结构和电化学性能，为高性能超级电容器电极的发展做出贡献。

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阿拉丁

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.