P[VEIm]I/PVdF electrospun fibers separator for supercapacitor in ionic liquids electrolyte

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-03-09 DOI:10.1016/j.mseb.2025.118179

Taiyu Guo , Xin Weng , Zhenzhen Wang , Liying Wang , Ruixin Li , Tieshi He

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引用次数: 0

Abstract

Poly (1-vinyl-3-ethylimidazole iodide)/polyvinylidene fluoride (P[VEIm]I / PVdF) electrospun fibers separators are prepared using the electrospinning method. The morphology, physical and chemical properties of P[VEIm]I/PVdF electrospun fibers are investigated by image analysis, characterization of the surface and electrochemical properties. The charge storage behaviour of supercapacitor based on P[VEIm]I/PVdF electrospun fibers separators in ionic liquid electrolyte are studied by means of alternative internal resistance, galvanostatic charge–discharge and cyclic voltammogram tests etc. P[VEIm]I/PVdF electrospun fibers separators exhibit high ionic liquid electrolyte uptake, fast ion transport ability and electrochemical stability. A supercapacitor fabricated using a P[VEIm]I/PVdF electrospun fibers separator derived from P[VEIm]I: PVdF mass ratio = 3: 100 demonstrates excellent comprehensive electrochemical performance: low impedance (4.1 Ω), high working voltage (3.5 V), energy density (22.5 Wh·kg⁻¹), power density (1,096 W·kg⁻¹), and capacity retention ability is 97.5 % after 1,000 cycles.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.