Flexible and high temperature supercapacitor based on laser-induced graphene electrodes and ionic liquid electrolyte, a de-rated voltage analysis

Zaccagnini, Pietro; Giovanni, Daniele Di; Gomez, Manuel Gomez; Passerini, Stefano; Varzi, Alberto; Lamberti, Andrea

doi:10.1016/j.electacta.2020.136838

Cited by 64 publications

(28 citation statements)

References 19 publications

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“…Indeed, Raman, X-ray photoelectron spectroscopy, and transmission electron microscopy analysis demonstrate the FLG nature of LIG. [7,12,[18][19][20] Concerning the possibility to increase the specific electric double layer capacitor (EDLC) performance of LIG, first of all the infiltration step was analyzed (see Figure 1), since a template can be filled following different strategies, namely dip coating, drop casting, or vacuum infiltration. All of them were implemented exploiting a dimethyl sulfoxide (DMSO)-based AC slurry and the results were compared with those of bare LIG electrode.…”

Section: Resultsmentioning

confidence: 99%

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Boosting Electric Double Layer Capacitance in Laser‐Induced Graphene‐Based Supercapacitors

Reina

Scalia

Auxilia

et al. 2021

Advanced Sustainable Systems

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direct laser writing process during which the sp 3 carbon atoms in the polymer are photothermally converted to sp 2 carbon atoms. The gas evolution due to the partial decomposition of the polymer chain acts as bubble-template during the graphitization, resulting in an electrically conductive porous structure suitable for supercapacitors application. Moreover, LIG acts at the same time as current collector and binderfree active material, strongly simplifying the device fabrication process, similarly to other direct-laser written materials. [4] Apart from the advantages discussed

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Section: Resultsmentioning

confidence: 99%

“…This is probably only due to the contact between the glass fiber and the supercapacitor, that is less adherent while keeping the device bended and possible variation in interconnection among the LIG flakes that deteriorates during bending. [12,[18][19][20][22][23][24]…”

Section: Resultsmentioning

confidence: 99%

Boosting Electric Double Layer Capacitance in Laser‐Induced Graphene‐Based Supercapacitors

Reina

Scalia

Auxilia

et al. 2021

Advanced Sustainable Systems

Self Cite

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“…Composite electrode materials have attracted extensive research interest owing to the advantages of the synergistic effect and optimized electrochemical properties [70,71]. In detail, carbon materials with electrical double-layer behavior possess excellent cycling stabilities and robust rate properties, but suffer from the low specific capacitance, while, conducting polymer, metal oxide, or sulfide based pseudo capacitors exhibit high specific capacitance but sustain poor cycling and rate stabilities [72][73][74][75][76][77][78][79][80]. As a result, the composites combined with both the two kinds of electrode materials could exploit their advantages to the full, thus achieving the flexible on-chip MSC with the possibility of practical application [81][82][83][84].…”

Section: Hybrid Electrode Materialsmentioning

confidence: 99%

Progress and Perspectives in Designing Flexible Microsupercapacitors

Liu

et al. 2021

Micromachines

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Miniaturized flexible microsupercapacitors (MSCs) that can be integrated into self-powered sensing systems, detecting networks, and implantable devices have shown great potential to perfect the stand-alone functional units owing to the robust security, continuously improved energy density, inherence high power density, and long service life. This review summarizes the recent progress made in the development of flexible MSCs and their application in integrated wearable electronics. To meet requirements for the scalable fabrication, minimization design, and easy integration of the flexible MSC, the typical assembled technologies consist of ink printing, photolithography, screen printing, laser etching, etc., are provided. Then the guidelines regarding the electrochemical performance improvement of the flexible MSC by materials design, devices construction, and electrolyte optimization are considered. The integrated prototypes of flexible MSC-powered systems, such as self-driven photodetection systems, wearable sweat monitoring units are also discussed. Finally, the future challenges and perspectives of flexible MSC are envisioned.

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“…These systems are usually modified with metal nanoparticles, carbon nanotubes, or graphene in order to reach the best parameters, such as faster electron transfer kinetics, low residual current, and excellent thermal conductivity [ 15 , 16 ]. Supercapacitors have a long history that has seen the employment of various carbon-electrode-based solid-state devices up to the development of their miniaturized form, known as micro-supercapacitors [ 17 ]. The rapid growth of portable electronics, remote control systems, radio-frequency detectors, and micro-electro-mechanical systems has significantly increased the need for device miniaturization [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Compared EC-AFM Analysis of Laser-Induced Graphene and Graphite Electrodes in Sulfuric Acid Electrolyte

et al. 2021

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Flexible and economic sensor devices are the focus of increasing interest for their potential and wide applications in medicine, food analysis, pollution, water quality, etc. In these areas, the possibility of using stable, reproducible, and pocket devices can simplify the acquisition of data. Among recent prototypes, sensors based on laser-induced graphene (LIGE) on Kapton represent a feasible choice. In particular, LIGE devices are also exploited as electrodes for sensing in liquids. Despite a characterization with electrochemical (EC) methods in the literature, a closer comparison with traditional graphite electrodes is still missing. In this study, we combine atomic force microscopy with an EC cell (EC-AFM) to study, in situ, electrode oxidation reactions when LIGE or other graphite samples are used as anodes inside an acid electrolyte. This investigation shows the quality and performance of the LIGE electrode with respect to other samples. Finally, an ex situ Raman spectroscopy analysis allows a detailed chemical analysis of the employed electrodes.

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Flexible and high temperature supercapacitor based on laser-induced graphene electrodes and ionic liquid electrolyte, a de-rated voltage analysis

Cited by 64 publications

References 19 publications

Boosting Electric Double Layer Capacitance in Laser‐Induced Graphene‐Based Supercapacitors

Boosting Electric Double Layer Capacitance in Laser‐Induced Graphene‐Based Supercapacitors

Progress and Perspectives in Designing Flexible Microsupercapacitors

Compared EC-AFM Analysis of Laser-Induced Graphene and Graphite Electrodes in Sulfuric Acid Electrolyte

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