An insight into synergistic effect of polyaniline and noble metal (Ag) on vanadium pentoxide nanorods for enhanced energe storage performance

IF 3.2 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Journal of the Indian Chemical Society Pub Date : 2024-10-18 DOI:10.1016/j.jics.2024.101440
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Abstract

The widespread applications of vanadium pentoxide (V2O5) are limited because of its low electrical conductivity and restricted ion diffusion coefficient. To address these constraints, the present study includes a straightforward and effective approach for fabricating polyaniline based silver-decorated vanadium pentoxide (Ag–V2O5/PANi) as an electrode material. The structural and morphological investigation of prepared electrode materials were made by X-ray diffraction analysis and scanning electron microscopy respectively. In comparison to pure Ag–V2O5, the Ag–V2O5/PANi composite demonstrated enhanced performance in various aspects. Specifically, the Ag–V2O5/PANi showed a higher specific capacitance (628 Fg−1) when subjected to a current density (1 Ag−1) in KOH electrolyte. Additionally, it has an energy density of 153 Whkg−1. Furthermore, the Ag–V2O5/PANi composite exhibited superior stability even after undergoing 3000 charge to discharge cycles. Exceptional capabilities shown can be ascribed to synergistic interaction between PANi and Ag–V2O5. The remarkable outcomes obtained from these electrode materials have the potential to foster novel prospects in high-energy-density storage systems.

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洞察五氧化二钒纳米棒上聚苯胺和贵金属(银)的协同效应以提高储能性能
由于五氧化二钒(V2O5)导电率低、离子扩散系数有限,因此其广泛应用受到了限制。针对这些制约因素,本研究采用一种简单有效的方法制备了聚苯胺基银装饰五氧化二钒(Ag-V2O5/PANi)电极材料。通过 X 射线衍射分析和扫描电子显微镜分别对所制备电极材料的结构和形态进行了研究。与纯 Ag-V2O5 相比,Ag-V2O5/PANi 复合材料的各方面性能都有所提高。具体来说,Ag-V2O5/PANi 在 KOH 电解液中的电流密度(1 Ag-1)下显示出更高的比电容(628 Fg-1)。此外,它的能量密度为 153 Whkg-1。此外,Ag-V2O5/PANi 复合材料在经历 3000 次充放电循环后仍表现出卓越的稳定性。PANi和Ag-V2O5之间的协同作用使其表现出卓越的性能。这些电极材料取得的卓越成果有望为高能量密度存储系统带来新的前景。
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来源期刊
CiteScore
3.50
自引率
7.70%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.
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