A structural supercapacitor based on activated carbon fabric and a solid electrolyte

Reece, Richard; Lekakou, Constantina; Smith, Paul A.

doi:10.1080/02670836.2018.1560536

Cited by 49 publications

(28 citation statements)

References 41 publications

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“…For a multifunctional application, a trade-off in electrochemical and mechanical performances is expected; thus, it is important to identify some optimal combination of the two desired properties. Accordingly, the Ashby plot in Figure compares the energy density and ultimate strength of the electrodes in this work (red stars) with other structural electrodes in the literature. − ,− When compared to other supercapacitors, the rGO/ANF/CNT electrodes performed well with both a good energy density and strength. When compared to similar materials from our group (purple, blue, and orange squares), this work showed a slight improvement in energy density at a small cost in strength.…”

Section: Resultsmentioning

confidence: 78%

Carbon Nanotube/Reduced Graphene Oxide/Aramid Nanofiber Structural Supercapacitors

Patel

Loufakis

Flouda

et al. 2020

ACS Appl. Energy Mater.

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Reduced graphene oxide/aramid nanofiber (rGO/ANF) supercapacitor electrodes have a good combination of energy storage and mechanical properties, but ion transport remains an issue toward achieving higher energy densities at high current because of the tightly packed electrode structure. Herein, carbon nanotubes (CNTs) are introduced to prevent rGO flake stacking to improve the rate capability of the rGO/ANF structural supercapacitor. The effect of CNTs on the rGO/ANF composite electrode’s mechanical and electrochemical properties is investigated by varying the composition. The addition of 20 wt % CNTs led to an increase in Young’s modulus up to 10.3 ± 1.8 GPa, while a maximum in ultimate strain and strength of 1.3 ± 0.14% and 55 ± 6.8 MPa, respectively, was found at a loading of 2.5 wt % CNTs. At low specific currents, the electrodes performed similarly (160–170 F g–1), but at high specific currents (5 A g–1), the addition of 20 wt % CNTs led to a significantly higher capacitance (76 F g–1) as compared to that of rGO/ANF electrodes without CNTs (26 F g–1). In addition, the energy density also improved significantly at high power from 1.4 to 5.1 W h L–1 with the addition of CNTs. The improvement in mechanical properties is attributed to the introduction of additional hydrogen-bonding and π–π interactions from the carboxylic acid-functionalized CNTs. The increase in capacitance at higher discharge rates is due to improved ion transport from the CNTs. Finally, in situ electrochemomechanical testing examines how capacitance varies with strain in these structural electrodes for the first time.

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Section: Resultsmentioning

confidence: 78%

Carbon Nanotube/Reduced Graphene Oxide/Aramid Nanofiber Structural Supercapacitors

Patel

Loufakis

Flouda

et al. 2020

ACS Appl. Energy Mater.

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“…CFs may be electrochemically active themselves, or act as framework and current collector for a multifunctional matrix packed around them. EDLCs are particularly attractive, since the energy storage process is entirely physical, depending only on the interface between electrode and electrolyte ( Figures 2A,B ) ( Li et al, 2010 ; Qian et al, 2013a ; Shirshova et al, 2013a ; Qian et al, 2013b ; Javaid et al, 2014 ; Shirshova et al, 2014 ; Westover et al, 2014 ; Greenhalgh et al, 2015 ; Javaid et al, 2016 ; Senokos et al, 2016 ; Kwon et al, 2017 ; Senokos et al, 2017 ; Shen and Zhou, 2017 ; Xu and Zhang, 2017 ; Li et al, 2018a ; Chen et al, 2018 ; Javaid et al, 2018 ; Javaid and Irfan, 2018 ; Muralidharan et al, 2018 ; Senokos et al, 2018 ; Aderyani et al, 2019 ; Flouda et al, 2019a ; Chen et al, 2019 ; Patel et al, 2019 ; Reece et al, 2019 ; Patel et al, 2020b ; Rana et al, 2020 ; Reece et al, 2020 ; Sun et al, 2020 ; Sánchez-Romate et al, 2021 ; Subhani et al, 2021 ; Xu et al, 2021 ). The central advantage for SESDs, is that there is little or no change in volume, and no (re)dissolution of material, associated with the electrochemical process, minimizing stresses, and simplifying the structural design, whilst ensuring an excellent cycle life.…”

Section: Current Statusmentioning

confidence: 99%

Designing Structural Electrochemical Energy Storage Systems: A Perspective on the Role of Device Chemistry

Navarro‐Suárez

Shaffer

2022

Front. Chem.

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Structural energy storage devices (SESDs), designed to simultaneously store electrical energy and withstand mechanical loads, offer great potential to reduce the overall system weight in applications such as automotive, aircraft, spacecraft, marine and sports equipment. The greatest improvements will come from systems that implement true multifunctional materials as fully as possible. The realization of electrochemical SESDs therefore requires the identification and development of suitable multifunctional structural electrodes, separators, and electrolytes. Different strategies are available depending on the class of electrochemical energy storage device and the specific chemistries selected. Here, we review existing attempts to build SESDs around carbon fiber (CF) composite electrodes, including the use of both organic and inorganic compounds to increase electrochemical performance. We consider some of the key challenges and discuss the implications for the selection of device chemistries.

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“…The prepared asymmetric flexible supercapacitor has a significant impact on developing flexible energy storage devices for wearable applications (Qi et al, 2020). To this end, commendable efforts have been dedicated in the fabrication of flexible supercapacitor electrodes based upon waste cotton fabric, carbon woven fabric, carbonized cotton fabric, activated carbon fabric by many researchers for high energy storage applications (González et al, 2016;Kim et al, 2018;Ippili et al, 2019;Jin et al, 2019;Lin et al, 2019;Reece et al, 2019;Wang et al, 2019c;Xu et al, 2019).…”

Section: Design Strategies For Textile-based Flexible Supercapacitormentioning

confidence: 99%

Recent Progress in Textile-Based Flexible Supercapacitor

et al. 2020

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In the backdrop of the growing requirement of flexible and wearable energy storage systems, textile-based supercapacitors having characteristic flexibility, superior charging-discharging rates, and low cost are ideal energy storage devices for wearable applications. Lightweight and flexible textile-based supercapacitors characterized by high conductivity, thermal, and environmental stability with negligible degradation under repeated use are required for multifunctional wearable electronics. Herein, supercapacitor based upon textile fabrics will be reviewed from the perspective of electrochemical, mechanical, and thermal properties without compromising flexibility, durability, and comfort of textile fabric.

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A structural supercapacitor based on activated carbon fabric and a solid electrolyte

Cited by 49 publications

References 41 publications

Carbon Nanotube/Reduced Graphene Oxide/Aramid Nanofiber Structural Supercapacitors

Carbon Nanotube/Reduced Graphene Oxide/Aramid Nanofiber Structural Supercapacitors

Designing Structural Electrochemical Energy Storage Systems: A Perspective on the Role of Device Chemistry

Recent Progress in Textile-Based Flexible Supercapacitor

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