Structure and Properties of Graphene Doped Electrospun Fiber Membrane

doi:10.12422/j.issn.1672-6952.2025.05.001

Abstract

Abstract:

Electrospinning can regulate fiber and membrane structures at the nanoscale, and doping graphene futher enhances the electrochemical function of nanofilms. Starting from the structure of graphene, we optimize the relationship between graphene doping ratio and nanofiber size and study the effects of electrospinning voltage, feed rate, spinning distance and time on membrane structure and electrochemical performance. Research has shown that when the graphene doping mass fraction in the nanofilm is 7%, the voltage is 24 kV, the spinning distance is 15 cm, the feed rate is 0.01 mL/min, and the time is 2 h, the diameter of the fibers in the nanofilm structure is 0.162 μm, and the impedance is 220.8 Ω. Under electrospinning conditions, the doping of graphene can control the preparation of nano films and optimize their electrochemical properties in multiple ways.

Key words: Electrospinning, Graphene/PVA composite fibers, Diaphragm, Electrochemical performance

摘要：

静电纺丝法能够在纳米尺度调控纤维和膜结构，石墨烯的掺杂可进一步提高纳米膜的电化学性能。基于石墨烯的结构特性，探究石墨烯质量分数与纳米纤维尺寸的关系，并考察了静电纺丝电压、进液量、纺丝距离及纺丝时间等参数对膜结构与电化学性能的影响。结果表明，当纳米膜中石墨烯质量分数为7%、电压为24 kV、纺丝距离为15 cm、进液量为0.01 mL/min、纺丝时间为2 h时，纳米膜结构中纤维直径为0.162 μm，阻抗为220.8 Ω；在静电纺丝条件下，石墨烯的掺杂能够可控制备纳米膜，多元优化其电化学性能。

关键词: 静电纺丝, 石墨烯/PVA复合纤维, 隔膜, 电化学性能

CLC Number:

TQ340.64

Jing WANG, Ruixiang WU, Chunyang DUAN, Zenghua ZHAO. Structure and Properties of Graphene Doped Electrospun Fiber Membrane[J]. Journal of Liaoning Petrochemical University, 2025, 45(5): 1-8.

王京, 武瑞祥, 段春阳, 赵增华. 掺杂石墨烯静电纺丝纤维膜结构与性能[J]. 辽宁石油化工大学学报, 2025, 45(5): 1-8.

Figures/Tables 11

Fig.1 Electrospinning preparation process

Fig.2 Characterization of graphene structure

Fig.3 SEM graphene/PVA composite fiber membranes with different graphene mass fractions

Table 1 Fiber diameter of graphene/PVA composite fiber membrane with different graphene mass fraction

w（石墨烯）/%	纤维直径/μm
0	0.187
5	0.245
6	0.165
7	0.162
10	0.129
15	0.120
20	0.110

Fig.4 Photos of graphene/PVA composite fiber membranes with different graphene mass fractions

Fig.5 Tensile strength of graphene/PVA composite fiber membranes with different graphene mass fractions

Fig.6 Nitrogen adsorption desorption curve and pore size distribution of graphene/PVA composite fiber membrane with graphene mass fraction of 7%

Fig.7 Electrochemical impedance spectra of graphene/PVA composite fiber membranes with different graphene mass fractions

Table 2 Impedance of graphene/PVA composite fiber membranes with different graphene mass fraction

w（石墨烯）/%	阻抗/Ω
0	407.2
5	291.1
6	239.8
7	220.8
10	186.1
15	173.2
20	127.2

Fig.8 SEM images of graphene/PVA fiber membrane structures prepared using different electrospinning processes

Fig.9 Impedance of graphene/PVA fiber membrane prepared using different spinning parameters

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