Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage
The rapidly developing demand for lightweight portable electronics has accelerated advanced research on self-powered microsystems (SPMs) for peak power energy storage (ESs). In recent years, there has been, in this regard, a huge research interest in micro-supercapacitors for microelectronics applic...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/1/329 |
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| author | Apurba Ray Jenny Roth Bilge Saruhan |
| author_facet | Apurba Ray Jenny Roth Bilge Saruhan |
| author_sort | Apurba Ray |
| collection | DOAJ |
| description | The rapidly developing demand for lightweight portable electronics has accelerated advanced research on self-powered microsystems (SPMs) for peak power energy storage (ESs). In recent years, there has been, in this regard, a huge research interest in micro-supercapacitors for microelectronics application over micro-batteries due to their advantages of fast charge–discharge rate, high power density and long cycle-life. In this work, the optimization and fabrication of micro-supercapacitors (MSCs) by means of laser-induced interdigital structured graphene electrodes (LIG) has been reported. The flexible and scalable MSCs are fabricated by CO<sub>2</sub>-laser structuring of polyimide-based Kapton <sup>®</sup> HN foils at ambient temperature yielding interdigital LIG-electrodes and using polymer gel electrolyte (PGE) produced by polypropylene carbonate (PPC) embedded ionic liquid of 1-ethyl-3-methyl-imidazolium-trifluoromethansulphonate [EMIM][OTf]. This MSC exhibits a wide stable potential window up to 2.0 V, offering an areal capacitance of 1.75 mF/cm<sup>2</sup> at a scan rate of 5.0 mV/s resulting in an energy density (E<sub>a</sub>) of 0.256 µWh/cm<sup>2</sup> @ 0.03 mA/cm<sup>2</sup> and power density (P<sub>a</sub>) of 0.11 mW/cm<sup>2</sup> @0.1 mA/cm<sup>2</sup>. Overall electrochemical performance of this LIG/PGE-MSC is rounded with a good cyclic stability up to 10,000 cycles demonstrating its potential in terms of peak energy storage ability compared to the current thin film micro-supercapacitors. |
| first_indexed | 2024-03-10T03:29:55Z |
| format | Article |
| id | doaj.art-6e34b7df763049f59e7763b0a354ac99 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T03:29:55Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-6e34b7df763049f59e7763b0a354ac992023-11-23T12:00:00ZengMDPI AGMolecules1420-30492022-01-0127132910.3390/molecules27010329Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy StorageApurba Ray0Jenny Roth1Bilge Saruhan2German Aerospace Center (DLR), Department of High-Temperature and Functional Coatings, Institute of Materials Research, 51147 Cologne, GermanyGerman Aerospace Center (DLR), Department of High-Temperature and Functional Coatings, Institute of Materials Research, 51147 Cologne, GermanyGerman Aerospace Center (DLR), Department of High-Temperature and Functional Coatings, Institute of Materials Research, 51147 Cologne, GermanyThe rapidly developing demand for lightweight portable electronics has accelerated advanced research on self-powered microsystems (SPMs) for peak power energy storage (ESs). In recent years, there has been, in this regard, a huge research interest in micro-supercapacitors for microelectronics application over micro-batteries due to their advantages of fast charge–discharge rate, high power density and long cycle-life. In this work, the optimization and fabrication of micro-supercapacitors (MSCs) by means of laser-induced interdigital structured graphene electrodes (LIG) has been reported. The flexible and scalable MSCs are fabricated by CO<sub>2</sub>-laser structuring of polyimide-based Kapton <sup>®</sup> HN foils at ambient temperature yielding interdigital LIG-electrodes and using polymer gel electrolyte (PGE) produced by polypropylene carbonate (PPC) embedded ionic liquid of 1-ethyl-3-methyl-imidazolium-trifluoromethansulphonate [EMIM][OTf]. This MSC exhibits a wide stable potential window up to 2.0 V, offering an areal capacitance of 1.75 mF/cm<sup>2</sup> at a scan rate of 5.0 mV/s resulting in an energy density (E<sub>a</sub>) of 0.256 µWh/cm<sup>2</sup> @ 0.03 mA/cm<sup>2</sup> and power density (P<sub>a</sub>) of 0.11 mW/cm<sup>2</sup> @0.1 mA/cm<sup>2</sup>. Overall electrochemical performance of this LIG/PGE-MSC is rounded with a good cyclic stability up to 10,000 cycles demonstrating its potential in terms of peak energy storage ability compared to the current thin film micro-supercapacitors.https://www.mdpi.com/1420-3049/27/1/329CO<sub>2</sub>-laser-induced grapheneionic electrolytemicro-supercapacitor |
| spellingShingle | Apurba Ray Jenny Roth Bilge Saruhan Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage Molecules CO<sub>2</sub>-laser-induced graphene ionic electrolyte micro-supercapacitor |
| title | Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage |
| title_full | Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage |
| title_fullStr | Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage |
| title_full_unstemmed | Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage |
| title_short | Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage |
| title_sort | laser induced interdigital structured graphene electrodes based flexible micro supercapacitor for efficient peak energy storage |
| topic | CO<sub>2</sub>-laser-induced graphene ionic electrolyte micro-supercapacitor |
| url | https://www.mdpi.com/1420-3049/27/1/329 |
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