Unveiling dynamic insights of nitrogen-doped carbon quantum dots in α-Fe2O3/PANI nanocomposite for supercapattery application

IF 3.5 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
S. Abinaya, A. Saranraj, Sujin P. Jose, Jayesh Cherusseri, Amanullah Fatehmulla
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引用次数: 0

Abstract

We have developed a novel ternary nanocomposite comprising of nitrogen-doped carbon quantum dots@α-Fe2O3/PANI (N-CQDs@α-Fe2O3/PANI nanocomposite) and use it as an active electrode material for supercapatteries. Doped carbon nanostructures-based nanocomposites are excellent candidates for electrochemical energy storage due to their tunability in the surface chemistry and availability of large electrochemical surface area. Initially, N-CQDs@α-Fe2O3 nanocomposite was synthesized and further insitu polymerization of aniline leads to the formation of N-CQDs@α-Fe2O3/PANI nanocomposite. The N-CQDs@α-Fe2O3 serves as a substrate to accommodate PANI to enhance the electrochemical activity. The specific capacity of the ternary nanocomposite electrode is 149 C g−1 (with a corresponding specific capacitance of 372.5 F g−1) at a current density of 1 A g−1 in a 2 M KOH (aqueous) electrolyte with a coulombic efficiency of 99% after 3000 cycles. Hence, it is proposed that the N-CQDs@α-Fe2O3/PANI nanocomposite has been suitable for the ideal electrode material which has potential application in hybrid energy storage devices.

揭示α-Fe2O3/聚苯胺纳米复合材料中氮掺杂碳量子点的动态特性
我们开发了一种由氮掺杂碳量子点@α- fe2o3 /PANI组成的新型三元纳米复合材料(N-CQDs@α-Fe2O3/PANI纳米复合材料),并将其用作超级电容器的活性电极材料。基于掺杂碳纳米结构的纳米复合材料由于其表面化学的可调性和大电化学表面积的可用性而成为电化学储能的优秀候选者。首先,合成了N-CQDs@α-Fe2O3纳米复合材料,并进一步将苯胺原位聚合形成N-CQDs@α-Fe2O3/PANI纳米复合材料。N-CQDs@α-Fe2O3作为衬底容纳聚苯胺,以提高电化学活性。在2 M KOH(水)电解质中,当电流密度为1 a g−1时,该三元纳米复合电极的比容量为149 C g−1(相应的比电容为372.5 F g−1),循环3000次后库仑效率为99%。因此,N-CQDs@α-Fe2O3/PANI纳米复合材料是一种理想的电极材料,在混合储能器件中具有潜在的应用前景。
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来源期刊
Journal of Materials Science
Journal of Materials Science 工程技术-材料科学:综合
CiteScore
7.90
自引率
4.40%
发文量
1297
审稿时长
2.4 months
期刊介绍: The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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