Fabricating Continuous Supercapacitor Fibers with High Performances by Integrating All Building Materials and Steps into One Process

Abstract

Supercapacitor fibers are rapidly produced in minutes by an integrated one-step fabrication process. This method is simple and efficient for large production. A variety of pseudocapacitive active materials including graphene oxide, metal oxide, and conducting polymers can be incorporated. The resulting all-solid-state supercapacitor fibers show remarkable energy-storage capabilities with both high power and energy densities.

Improvement of system capacitance via weavable superelastic biscrolled yarn supercapacitors

“…In addition to providing high-density energy storage and fast energy release, these fibres must also be sufficiently robust to be fabricated into textiles by such industrial processes as weaving, knitting and sewing. Important recent advances have increased the energy and power densities of fibre-based supercapacitors123456789101112131415161718192021222324252627282930, some of which also provide high flexibility and stretchability. Yet, the ever advancing applications needs far eclipse presently realized power and energy densities of yarns and fibres and new approaches are needed to bridge this technology gap.…”

“…In this direction, recent improved fibre-based supercapacitors have used thin MnO 2 coatings that are applied to highly conductive and, in some cases, highly stretchable base fibres234567891011121314151617. Ultimately, however, this core–shell structure limits the allowable active material loading before performance is compromised.…”

High-performance Supercapacitors Based on Electrochemical-induced Vertical-aligned Carbon Nanotubes and Polyaniline Nanocomposite Electrodes

“…The electrochemical performances of supercapacitors are mainly controlled by the structural and electrochemical properties of electrodes materials. Nanocarbon materials such as CNTs have shown anisotropic microstructure, porous networks, high electric conductivity and large mechanical strength, which make them prime candidates as supercapacitor electrodes5141516171819. For instance, large-scale free-standing single-walled carbon nanotubes (SWCNTs) film with high electric conductivity were utilized as supercapacitor electrodes, and the supercapacitors performed good electrochemical performance (specific capacitance was 35 F g −1 , energy density was 43.7 Wh kg −1 )20.…”

Elastomeric and Dynamic MnO2/CNT Core–Shell Structure Coiled Yarn Supercapacitor

“…Nevertheless, most fiber-based supercapacitors (FBSs) simply possess the flexibility with limited tensile strain and stretchability [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] because they are mostly based on nonstretchable electrodes such as carbon nanotube (CNT) spun yarn, 2-7 graphene fiber, [8][9][10][11][12] carbon fiber, 13,14 and metal wire. 15 This lack of stretchability of these FBSs leads to limitation for more advanced utilization, e.g., as a power source for artificial muscles 17 or wearable devices that are exposed to high strain, especially in the joint part.…”