This study proposes a capacitor design method based on metal/polyester staple fiber blended slivers. By regulating the parallel arrangement of stainless steel (SS) fiber and enameled copper wire (EW) in the polyester matrix through carding process, a three-dimensional interdigital electrode structure within the sliver is constructed, thereby achieving directional enhancement of the capacitance characteristics. Experiments show that when the sliver volume mass is 0.57 g/cm³ and the SS fiber content reaches 14%, a high capacitance value of 2105.56 mF can be obtained under a voltage of 1 V and a frequency of 100 Hz. Although the introduction of surface-insulated EW reduces the risk of metal contact, its contribution to the capacitance improvement is limited. The capacitor substrate has both flexibility and breathability, enabling effective capacitance enhancement. This provides a new approach for the subsequent design of wearable electronics and smart fabrics, and is suitable for scenarios that require both high energy storage and functionality, such as electromagnetic protection.
RakovVARachidiF.Overview of recent progress in lightning research and lightning protection. IEEE Trans Electromag Compat2009;
51(3): 428–442.
2.
KolavadaHGajjarPNGuptaSK.Unraveling quantum capacitance in supercapacitors: Energy storage applications. J Energy Storage2024;
81: 110354.
3.
MillerEEHuaYTezelFH.Materials for energy storage: Review of electrode materials and methods of increasing capacitance for supercapacitors. J Energy Storage2018;
20: 30–40.
4.
ZhangLPuYChenM.Complex impedance spectroscopy for capacitive energy-storage ceramics: A review and prospects. Mater Today Chem2023;
28: 101353.
5.
CzaganyMHompothSKeshriAK, et al.
Supercapacitors: An efficient way for energy storage application. Materials2024;
17(3): 702.
6.
ZhaoYZhongZLinF, et al.
Multi time scale management and coordination strategy for stationary super capacitor energy storage in urban rail transit power supply system. Electric Power Syst Res2024;
228: 110046.
7.
ZhuFYangZZhaoZ, et al.
Two-stage synthetic optimization of supercapacitor-based energy storage systems, traction power parameters and train operation in urban rail transit. IEEE Trans Vehicular Technol2021;
70(9): 8590–8605.
8.
LiWYangTLiC, et al.
Exploration on the application of a new type of superconducting energy storage for regenerative braking in urban rail transit. Supercond Sci Technol2023;
36(11): 115013.
9.
ChenHLiuX-FLiH-Y, et al.
Rational designed isostructural MOF for the charge—discharge behavior study of super capacitors. Nano Res2022;
15(7): 6208–6212.
10.
YangSZhaoFLiX, et al.
Electrode structural changes and their effects on capacitance performance during preparation and charge-discharge processes. J Energy Storage2019;
24: 100799.
11.
ZhaoTZhouSXuZ, et al.
Molecular insights into temperature oscillation of electric double-layer capacitors in charging–discharging cycles. J Power Sources2023;
559: 232596.
12.
YuSHanDZhuL, et al.
Thermal performance evaluation of new energy vehicle pre-charge resistors based on phase change material cooling. Appl Therm Eng2023;
231: 120877.
13.
ZhaoCTongXYangY, et al.
Loofah sponge-derived 3D flexible porous carbon electrode for high performance supercapacitor. J Energy Storage2024;
78: 110295.
14.
DaiJZhuCFanY, et al.
Zinc-ion supercapacitor with stress sensing function based on CZIF-67-CNTs cathode. J Energy Storage2024;
83: 110670.
15.
ChenXQiuLRenJ, et al.
Novel electric double-layer capacitor with a coaxial fiber structure. Adv Mater2013;
25(44): 6436–6441.
16.
MengYZhaoYHuC, et al.
All-graphene core-sheath microfibers for all-solid-state, stretchable fibriform supercapacitors and wearable electronic textiles. Adv Mater2013;
25(16): 2326–2331.
17.
SunGLiuJZhangX, et al.
Fabrication of ultralong hybrid microfibers from nanosheets of reduced graphene oxide and transition-metal dichalcogenides and their application as supercapacitors. Angew Chem Int Ed2014;
53(46): 12576–12580.
18.
LuoQShenHZhouG, et al.
A mini-review on the dielectric properties of cellulose and nanocellulose-based materials as electronic components. Carbohyd Polym2023;
303: 120449.
19.
LiuWSunXYanX, et al.
Review of energy storage capacitor technology. Batteries2024;
10(8): 271.
20.
JiliXGaoLChenH, et al.
Microstructure and dielectric properties of gradient composite BaXSr1−XTiO3 multilayer ceramic capacitors. Micromachines2024;
15(4): 470.
21.
LiXXuLLiuL, et al.
High pressure treated ZnO ceramics towards giant dielectric constants. J Mater Chem A2014;
2(39): 16740–16745.
22.
ChengXLiZWuJ.Colossal permittivity in ceramics of TiO2 co-doped with niobium and trivalent cation. J Mater Chem A2015;
3(11): 5805–5810.
23.
FerriJLlinares LlopisRMorenoJ, et al.
An investigation into the fabrication parameters of screen-printed capacitive sensors on e-textiles. Text Res J2020;
90(15–16): 1749–1769.
24.
YiDGohKZhangQ, et al.
Controlled functionalization of carbonaceous fibers for asymmetric solid-state micro-supercapacitors with high volumetric energy density. Adv Mater2014;
26(39): 6790–6797.
25.
NieWZhangSDingX, et al.
A novel cord-shaped supercapacitor with high stretchability. Text Res J2019;
89(19–20): 4265–4271.
26.
MartinezJGRichterKPerssonN-K, et al.
Investigation of electrically conducting yarns for use in textile actuators. Smart Mater Struct2018;
27(7): 074004.
27.
YangS-YWangY-FYueY, et al.
Flexible polyester yarn/au/conductive metal-organic framework composites for yarn-shaped supercapacitors. J Electroanal Chem2019;
847: 113218.
28.
SuCShaoGYuQ, et al.
A flexible, lightweight and stretchable all-solid-state supercapacitor based on warp-knitted stainless-steel mesh for wearable electronics. Text Res J2022;
92(11–12): 1807–1819.
29.
PenavaŽPenavaDŠKnezićŽ.Heat as a conductivity factor of electrically conductive yarns woven into fabric. Materials2022;
15(3): 1202.
30.
IslamGMNCollieSGouldM, et al.
Two-dimensional carbon material incorporated and PDMS-coated conductive textile yarns for strain sensing. J Coatings Technol Res2023;
20(6): 1881–1895.
SabriOMErhanSNavneetS, et al.
Investigation of electromagnetic shielding effectiveness of needle punched nonwoven fabric produced from conductive silver coated staple polyamide fibre. J Text Inst2016;
107(7): 912–922.
33.
JiangSQNewtonEYuenCWM, et al.
Chemical silver plating on cotton and polyester fabrics and its application on fabric design. Text Res J2006;
76(1): 57–65.
34.
Prateek, ThakurVKGuptaRK.Recent progress on ferroelectric polymer-based nanocomposites for high energy density capacitors: Synthesis, dielectric properties, and future aspects. Chem Rev2016;
116(7): 4260–4317.
35.
ZhangYWangYDengY, et al.
High dielectric constant and low loss in polymer composites filled by self-passivated zinc particles. Mater Lett2012;
72: 9–11.
36.
FangFYangWYuS, et al.
Mechanism of high dielectric performance of polymer composites induced by BaTio3-supporting Ag hybrid fillers. Appl Phys Lett2014;
104(13): 132909.
37.
YiZLyuBGaoD, et al.
Preparation strategy and composition design of polymer-based layered composites for improving energy storage performances. J Energy Storage2024;
92: 111995.
38.
Poonam, SharmaKAroraA, et al.
Review of supercapacitors: Materials and devices. J Energy Storage2019;
21: 801–825.
39.
HwangSHwangTKongH, et al.
Novel fabrication method of hierarchical planar micro-supercapacitor via laser-induced localized growth of manganese dioxide nanowire arrays. Appl Surf Sci2021;
552: 149382.
40.
WangYZhangLHouH, et al.
Recent progress in carbon-based materials for supercapacitor electrodes: A review. J Mater Sci2021;
56(1): 173–200.
41.
DizonAOrazemME.On experimental determination of cell constants for interdigitated electrodes. Electrochim Acta2020;
337: 135732.
42.
TunákMTunákováVSchindlerM, et al.
Spatial arrangement of stainless steel fibers within hybrid yarns designed for electromagnetic shielding. Text Res J2018;
89(10): 2019–2030.
43.
IsmarETaoXRaultF, et al.
Towards embroidered circuit board from conductive yarns for e-textiles. IEEE Access2020;
8: 155329–155336.
44.
NuramdhaniIOdhiamboSAHertleerCTW, et al.
Electric field effect on charge-discharge characteristics of textile-based energy storage devices: In search of the underlying mechanism. Tekstilec2016;
59(2): 162–167.
HuYLiPLaiG, et al.
Separator with high ionic conductivity enables electrochemical capacitors to line-filter at high power. Nat Commun2025;
16(1): 2772.
47.
NaSLipingWMeinaL, et al.
Simulation of fiber configuration in the sliver with the straightness and separation degree. Text Res J2023;
93(23–24): 5475–5484.
48.
TinocoJCAlvaradoJMartinez-LopezAG, et al. Impact of extrinsic capacitances on FINFETs rf performance. In 2012 IEEE 12th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, 2012; pp. 73–76.
