Three-dimensional stretchable fabric-based electrode for supercapacitors prepared by electrostatic flocking

Li, Xiaoyan; Wang, Jun; Wang, Kangkang; Yao, Jiming; Bian, Hongjie; Song, Ke; Komarneni, Sridhar; Cai, Zaisheng

doi:10.1016/j.cej.2020.124442

Cited by 29 publications

(16 citation statements)

References 75 publications

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“…Application of flock fibers (short polymeric microfibers with proprietary electrostatic surface finishes) to an object increases regional mechanical strength, generates anisotropic surfaces with high surface areas and porosities, and allows for surface functionalization based on the type of fiber used. For example, flocking has been used to create marine antifouling surfaces, [3,4] solar-driven steam generators, [5,6] microfluidic chips for self-coalescing flow, [7] elastomeric thermal interface and composite materials, [8,9] stretchable fabric-based electrodes, [10] shock-absorbing materials, [11,12] diagnostic swabs, [13][14][15] and tissue engineering scaffolds. [16][17][18][19][20][21] Though introduced to tissue engineering more than a decade ago, progress with flocked scaffolds has been limited due to restrictive electrical conductivity requirements, inability to generate individual flock fibers, and a lack of understanding in approach and synthesis.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic Flocking of Insulative and Biodegradable Polymer Microfibers for Biomedical Applications

McCarthy

John

Saldana

et al. 2021

Adv Healthcare Materials

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Electrostatic flocking, a textile engineering technique, uses Coulombic driving forces to propel conductive microfibers toward an adhesive-coated substrate, leaving a forest of aligned fibers. Though an easy way to induce anisotropy along a surface, this technique is limited to microfibers capable of accumulating charge. This study reports a novel method, utilizing principles from the percolation theory to make electrically insulative polymeric microfibers flockable. A variety of well-mixed, conductive materials are added to multiple insulative and biodegradable polymer microfibers during wet spinning, which enables nearly all types of polymer microfibers to accumulate sufficient charges required for flocking. Biphasic, biodegradable scaffolds are fabricated by flocking silver nanoparticle (AgNP)-filled poly( -caprolactone) (PCL) microfibers onto substrates made from 3D printing, electrospinning, and thin-film casting. The incorporation of AgNP into PCL fibers and use of chitosan-based adhesive enables antimicrobial activity against methicillin-resistant Staphylococcus aureus. The fabricated scaffolds demonstrate both favorable in vitro cell response and new tissue formation after subcutaneous implantation in rats, as evident by newly formed blood vessels and infiltrated cells. This technology opens the door for using previously unflockable polymer microfibers as surface modifiers or standalone structures in various engineering fields.

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Section: Introductionmentioning

confidence: 99%

Electrostatic Flocking of Insulative and Biodegradable Polymer Microfibers for Biomedical Applications

McCarthy

John

Saldana

et al. 2021

Adv Healthcare Materials

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“…The main process of electrostatic flocking is as follows [ 55 ]: The carbon fiber is in contact with the negative plate during the landing, and the negatively charged carbon fiber drops under the attraction of the positive plate. The CF is inserted vertically into the adhesive, coated on the positive plate under the action of the electric field [ 56 ]. Sun et al adopted an electrostatic flocking method and developed a fuzzy mat based on installation of different fillers on a mat of carbon fiber and as a result high thermal conductivity enhancement was observed in the out-of-plane direction [ 57 ].…”

Section: Preparation Methodsmentioning

confidence: 99%

Preparation, Properties and Mechanisms of Carbon Fiber/Polymer Composites for Thermal Management Applications

et al. 2021

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With the increasing integration and miniaturization of electronic devices, heat dissipation has become a major challenge. The traditional printed polymer circuit board can no longer meet the heat dissipation demands of microelectronic equipment. If the heat cannot be removed quickly and effectively, the efficiency of the devices will be decreased and their lifetime will be shortened. In addition, the development of the aerospace, automobiles, light emitting diode (LED{ TA \1 “LED; lightemitting diode” \s “LED” \c 1 }) and energy harvesting and conversion has gradually increased the demand for low-density and high thermal conductive materials. In recent years, carbon fiber (CF{ TA \1 “CF; carbon fiber” \c 1 }) has been widely used for the preparation of polymer composites due to its good mechanical property and ultra-high thermal conductivity. CF materials easily form thermal conduction paths through polymer composites to improve the thermal conductivity. This paper describes the research progress, thermal conductivity mechanisms, preparation methods, factors influencing thermal conductivity and provides relevant suggestions for the development of CF composites for thermal management.

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“…[ 73–77 ] Stretchable 3D structured SCs can be achieved by using kirigami/origami methods, [ 78–80 ] 3D printing technology, [ 65,81 ] or 3D textiles. [ 64,82 ] Elastic polymers such as polyurethane (PU), [ 83 ] polydimethylsiloxane (PDMS), [ 84,85 ] and silicone rubber (Ecoflex) [ 69,86 ] are used as stretchable substrates owing to their good stretchability, tensile recovery, and transparency. These insulating polymer substrates can be transformed into conductive current collectors by incorporating with conductive carbon, metals, or conducting polymers.…”

Section: Background Of Tmcs As Electrode Materials For Scsmentioning

confidence: 99%

Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials

Lyu

Antink

Kim

et al. 2021

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Flexible and stretchable supercapacitors (FS‐SCs) are promising energy storage devices for wearable electronics due to their versatile flexibility/stretchability, long cycle life, high power density, and safety. Transition metal compounds (TMCs) can deliver a high capacitance and energy density when applied as pseudocapacitive or battery‐like electrode materials owing to their large theoretical capacitance and faradaic charge‐storage mechanism. The recent development of TMCs (metal oxides/hydroxides, phosphides, sulfides, nitrides, and selenides) as electrode materials for FS‐SCs are discussed here. First, fundamental energy‐storage mechanisms of distinct TMCs, various flexible and stretchable substrates, and electrolytes for FS‐SCs are presented. Then, the electrochemical performance and features of TMC‐based electrodes for FS‐SCs are categorically analyzed. The gravimetric, areal, and volumetric energy density of SC using TMC electrodes are summarized in Ragone plots. More importantly, several recent design strategies for achieving high‐performance TMC‐based electrodes are highlighted, including material composition, current collector design, nanostructure design, doping/intercalation, defect engineering, phase control, valence tuning, and surface coating. Integrated systems that combine wearable electronics with FS‐SCs are introduced. Finally, a summary and outlook on TMCs as electrodes for FS‐SCs are provided.

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Three-dimensional stretchable fabric-based electrode for supercapacitors prepared by electrostatic flocking

Cited by 29 publications

References 75 publications

Electrostatic Flocking of Insulative and Biodegradable Polymer Microfibers for Biomedical Applications

Electrostatic Flocking of Insulative and Biodegradable Polymer Microfibers for Biomedical Applications

Preparation, Properties and Mechanisms of Carbon Fiber/Polymer Composites for Thermal Management Applications

Recent Development of Flexible and Stretchable Supercapacitors Using Transition Metal Compounds as Electrode Materials

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