导电聚合物-镍铁氧体纳米复合材料的设计与储能性能

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2025-07-25 DOI:10.1016/j.nanoso.2025.101520

Süleyman Kerli , Ali Kemal Soğuksu , Ümit Alver

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引用次数: 0

摘要

本研究将聚苯胺（PANI）通过氧化聚合涂覆在水热合成的铁氧体镍上，制备了一种新型复合材料。采用XRD、SEM、XPS和FTIR对其结构和化学性质进行了表征。XRD证实了晶体相，SEM显示了表面形貌。XPS证明了与聚苯胺的成功结合，特别是通过测定Ni和Fe的氧化态。FTIR评估了组分之间的结合。用扫描速率为10-100 mV s⁻¹ 的CV测试和电流密度为20-80 mA cm⁻²的GCD测试来研究电化学性能。退火后的铁素体镍-聚苯胺复合材料具有17.76 F的高面电容。cm⁻²在20 mA cm⁻²。同时也表现出良好的速率性能和循环稳定性。EIS分析表明，该电极具有低阻抗，特别是在低频区域，允许更快的电荷转移和离子扩散。总之，热处理镍铁氧体和导电聚苯胺的组合创造了一种具有优异储能性能的电极材料。

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Design and energy storage behavior of conductive polymer-nickel ferrite nanocomposites

In this study, a new composite material was developed by coating polyaniline (PANI) onto hydrothermally synthesized nickel ferrite via oxidative polymerization. Structural and chemical properties were characterized using XRD, SEM, XPS, and FTIR. XRD confirmed the crystalline phases, while SEM revealed the surface morphology. XPS demonstrated successful incorporation into PANI, particularly by determining the oxidation states of Ni and Fe. FTIR evaluated the bonding between the components. Electrochemical performance was investigated using CV tests at scan rates of 10–100 mV s⁻¹ and GCD tests at current densities of 20–80 mA cm⁻². The annealed nickel ferrite-PANI composite exhibited a high areal capacitance of 17.76 F.cm⁻² at 20 mA cm⁻². It also demonstrated good rate capability and cycling stability. EIS analysis revealed that this electrode has a low impedance, particularly in the low-frequency region, allowing for faster charge transfer and ion diffusion. In conclusion, the combination of heat-treated nickel ferrite and conductive PANI creates an electrode material with superior energy storage properties.

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .