Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes
Abstract Light‐mediated energy storage is key in diverse applications, including photonic devices, solar energy harvest, and others. Here, we demonstrate the construction of a photo‐rechargeable supercapacitor, in which light‐induced recharging is based, for the first time, on photoactive labile ele...
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| Format: | Article |
| Language: | English |
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202500978 |
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| author | Shubhra Kanti Bhaumik Sudipta Biswas Nitzan Shauloff Ahiud Morag Raz Jelinek |
| author_facet | Shubhra Kanti Bhaumik Sudipta Biswas Nitzan Shauloff Ahiud Morag Raz Jelinek |
| author_sort | Shubhra Kanti Bhaumik |
| collection | DOAJ |
| description | Abstract Light‐mediated energy storage is key in diverse applications, including photonic devices, solar energy harvest, and others. Here, we demonstrate the construction of a photo‐rechargeable supercapacitor, in which light‐induced recharging is based, for the first time, on photoactive labile electrolytes. Specifically, the supercapacitor dielectric medium consisted of 2‐nitrobenzaldehyde as the electrolyte. In the dark, 2‐nitrobenzaldehyde is not ionized and the device displayed low capacitance. However, upon light irradiation, 2‐nitrobenzaldehyde undergoes chemical transformation and forms labile benzoic acid derivatives. These photoacids further ionize upon illumination, with the redox‐active photoinduced ionic species giving rise to significantly enhanced capacitance. Importantly, the generation of photoinduced electrolytes is reversible, facilitating multiple charge–discharge cycles. The photo‐rechargeable device exhibited extended discharge times, high specific capacitance, capacitance retention, and cyclic stability. The use of the photo‐rechargeable supercapacitor is demonstrated for practical charging and powering an external load. Light‐induced energy storage mediated by photoactive electrolytes is a new and powerful concept and may open new avenues for photo‐charged devices, solar energy harvesting, and storage. |
| format | Article |
| id | doaj-art-f67e0efa130e4e008e550d527470a168 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-f67e0efa130e4e008e550d527470a1682025-08-20T03:32:37ZengWileyAdvanced Science2198-38442025-07-011228n/an/a10.1002/advs.202500978Photo‐Rechargeable Organic Supercapacitor via Light‐Activated ElectrolytesShubhra Kanti Bhaumik0Sudipta Biswas1Nitzan Shauloff2Ahiud Morag3Raz Jelinek4Department of Chemistry Ben Gurion University of the Negev Beer Sheva 8410501 IsraelDepartment of Chemistry Ben Gurion University of the Negev Beer Sheva 8410501 IsraelDepartment of Chemistry Ben Gurion University of the Negev Beer Sheva 8410501 IsraelCenter for Advancing Electronics Dresden (CFAED) Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01069 Dresden GermanyDepartment of Chemistry Ben Gurion University of the Negev Beer Sheva 8410501 IsraelAbstract Light‐mediated energy storage is key in diverse applications, including photonic devices, solar energy harvest, and others. Here, we demonstrate the construction of a photo‐rechargeable supercapacitor, in which light‐induced recharging is based, for the first time, on photoactive labile electrolytes. Specifically, the supercapacitor dielectric medium consisted of 2‐nitrobenzaldehyde as the electrolyte. In the dark, 2‐nitrobenzaldehyde is not ionized and the device displayed low capacitance. However, upon light irradiation, 2‐nitrobenzaldehyde undergoes chemical transformation and forms labile benzoic acid derivatives. These photoacids further ionize upon illumination, with the redox‐active photoinduced ionic species giving rise to significantly enhanced capacitance. Importantly, the generation of photoinduced electrolytes is reversible, facilitating multiple charge–discharge cycles. The photo‐rechargeable device exhibited extended discharge times, high specific capacitance, capacitance retention, and cyclic stability. The use of the photo‐rechargeable supercapacitor is demonstrated for practical charging and powering an external load. Light‐induced energy storage mediated by photoactive electrolytes is a new and powerful concept and may open new avenues for photo‐charged devices, solar energy harvesting, and storage.https://doi.org/10.1002/advs.202500978organic supercapacitorsphotoacidsphotoactive electrolytesphoto‐rechargeable supercapacitors |
| spellingShingle | Shubhra Kanti Bhaumik Sudipta Biswas Nitzan Shauloff Ahiud Morag Raz Jelinek Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes Advanced Science organic supercapacitors photoacids photoactive electrolytes photo‐rechargeable supercapacitors |
| title | Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes |
| title_full | Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes |
| title_fullStr | Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes |
| title_full_unstemmed | Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes |
| title_short | Photo‐Rechargeable Organic Supercapacitor via Light‐Activated Electrolytes |
| title_sort | photo rechargeable organic supercapacitor via light activated electrolytes |
| topic | organic supercapacitors photoacids photoactive electrolytes photo‐rechargeable supercapacitors |
| url | https://doi.org/10.1002/advs.202500978 |
| work_keys_str_mv | AT shubhrakantibhaumik photorechargeableorganicsupercapacitorvialightactivatedelectrolytes AT sudiptabiswas photorechargeableorganicsupercapacitorvialightactivatedelectrolytes AT nitzanshauloff photorechargeableorganicsupercapacitorvialightactivatedelectrolytes AT ahiudmorag photorechargeableorganicsupercapacitorvialightactivatedelectrolytes AT razjelinek photorechargeableorganicsupercapacitorvialightactivatedelectrolytes |