Unravelling the Growth Mechanism of Nanotorous ZrO2-NiO Binary Composite and its Electrochemical Study for Supercapacitor Application

IF 2.7 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Journal of Cluster Science Pub Date : 2024-10-14 DOI:10.1007/s10876-024-02711-z
Kumar Abhisek, Shashikant Shivaji Vhatkar, Helen Treasa Mathew, Dipti Sakshi Srivastava, Ramesh Oraon
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Abstract

Present work reports on the synthesis of NiO-incorporated nanotorous ZrO2 synthesized by facile co-precipitation method for supercapacitor application. The as-synthesized composite was characterised using FTIR and XRD confirming the successful synthesis of ZrO2-NiO composite (ZNC). FESEM analysis also revealed morphology transition from nanoclusters of tiny ZrO2 particles and stacked flakes of NiO to self-assembled nanotorus ZNC. Electrochemical analyses (like CV, GCD, EIS) also revealed improved electrochemical behaviour of ZrO2 whose specific capacitance increased from 87.77 F/g to 251 F/g in ZNC at 1 A/g. This could be attributed to the synergistic effect of nanotorous morphology in the presence of NiO. These observations were well complemented by a reduced band gap (~ 2.96 eV) and lower charge transfer and solution resistance. A mechanistic insight was also proposed for a deeper understanding of the development of torous structured material. This work provides a closer look into how NiO-driven torous morphology of ZrO2-NiO composite has improved the electrochemical performance of ZrO2.

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揭示纳米多孔 ZrO2-NiO 二元复合材料的生长机理及其在超级电容器应用中的电化学研究
本研究报告采用简便的共沉淀法合成了掺杂氧化镍的纳米多孔 ZrO2,用于超级电容器。利用傅立叶变换红外光谱和 XRD 对合成的复合材料进行了表征,证实成功合成了 ZrO2-NiO 复合材料 (ZNC)。FESEM 分析还揭示了从微小 ZrO2 颗粒的纳米团簇和堆叠的片状 NiO 到自组装纳米 ZNC 的形态转变。电化学分析(如 CV、GCD、EIS)也显示 ZrO2 的电化学性能有所改善,在 1 A/g 时,ZNC 的比电容从 87.77 F/g 增加到 251 F/g。这可能归因于纳米多孔形态在氧化镍存在下的协同效应。这些观察结果与带隙减小(约 2.96 eV)、电荷转移和溶液阻力降低相辅相成。此外,还提出了一种机理见解,以加深对多孔结构材料发展的理解。这项工作让人们更深入地了解了 NiO 驱动的 ZrO2-NiO 复合材料多孔形貌如何改善了 ZrO2 的电化学性能。
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来源期刊
Journal of Cluster Science
Journal of Cluster Science 化学-无机化学与核化学
CiteScore
6.70
自引率
0.00%
发文量
166
审稿时长
3 months
期刊介绍: The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.
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