Strategically designed multiwalled carbon nanotube/bismuth ferrite/polyaniline nanocomposites and unlocking their potential for advanced supercapacitors

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2024-08-16 DOI:10.1016/j.synthmet.2024.117714

Anjana Baby , Tejashwini V , Sreeja Puthenveetil Balakrishnan , Mohd Afzal , Jayesh Cherusseri

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引用次数: 0

Abstract

Bismuth ferrite (BF) serves a potential electrode-active material due to its peculiar characteristics such as wide voltage window and high specific capacitance, excellent stability, facile synthesis routes, etc. to name a few. Herein we report the strategic design and facile synthesis of multiwalled carbon nanotubes (MWCNT)/BF/polyaniline (PANI) nanocomposites, particularly for application in advanced supercapacitors. The MWCNT/BF/PANI nanocomposite architecture is a strategic design in which the maximum available surface area is utilized for the electrode nanostructure with increased porosity that allows easy movement of electrolyte-ions through it. The uniform arrangement of BF on MWCNTs helps in mitigating the possible agglomeration, further augmenting the surface area for an enhanced charge storage. The strategic layout of PANI on BF-decorated MWCNTs has given a coral-like structure for the nanocomposite electrode which significantly increased the surface area, reduced ion pathways and facilitating better access to electrolytic K⁺ ions. The MWCNT/BF/PANI nanocomposite electrode exhibits a specific capacitance of 3640 F g⁻¹ at a current density of 5 A g⁻¹. The innovative design as well as the synergy between the individual components of the nanocomposite electrode play a pivotal role in attaining the enhanced electrochemical performance.

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战略性设计的多壁碳纳米管/铁铋/聚苯胺纳米复合材料及其在先进超级电容器中的应用潜力

铁氧体铋（BF）具有电压窗口宽、比电容高、稳定性好、合成路线简便等特点，是一种潜在的电活性材料。在此，我们报告了多壁碳纳米管（MWCNT）/BF/聚苯胺（PANI）纳米复合材料的战略设计和简易合成，尤其是在先进超级电容器中的应用。MWCNT/BF/PANI 纳米复合材料结构是一种战略性设计，其电极纳米结构利用了最大的可用表面积，并增加了孔隙率，使电解质离子易于通过。BF 在 MWCNTs 上的均匀排列有助于减少可能出现的团聚，进一步扩大表面积以增强电荷存储。PANI 在 BF 装饰的 MWCNT 上的战略布局为纳米复合电极提供了一种珊瑚状结构，从而显著增加了表面积，减少了离子通道，并有助于更好地获得电解 K+ 离子。当电流密度为 5 A g-1 时，MWCNT/BF/PANI 纳米复合电极的比电容为 3640 F g-1。纳米复合电极的创新设计以及各组分之间的协同作用在实现更高的电化学性能方面发挥了关键作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.