التفاصيل البيبلوغرافية
| العنوان: |
A Redox-Mediator-Integrated Flexible Micro-Supercapacitor with Improved Energy Storage Capability and Suppressed Self-Discharge Rate |
| المؤلفون: |
Sung Min Wi, Jihong Kim, Suok Lee, Yu-Rim Choi, Sung Hoon Kim, Jong Bae Park, Younghyun Cho, Wook Ahn, A-Rang Jang, John Hong, Young-Woo Lee |
| المصدر: |
Nanomaterials, Vol 11, Iss 11, p 3027 (2021) |
| بيانات النشر: |
MDPI AG, 2021. |
| سنة النشر: |
2021 |
| المجموعة: |
LCC:Chemistry |
| مصطلحات موضوعية: |
hydroquinone-based polymer-gel electrolyte, micro-supercapacitors, Faradaic redox reactions, energy storage, Chemistry, QD1-999 |
| الوصف: |
To effectively improve the energy density and reduce the self-discharging rate of micro-supercapacitors, an advanced strategy is required. In this study, we developed a hydroquinone (HQ)-based polymer-gel electrolyte (HQ-gel) for micro-supercapacitors. The introduced HQ redox mediators (HQ-RMs) in the gel electrolyte composites underwent additional Faradaic redox reactions and synergistically increased the overall energy density of the micro-supercapacitors. Moreover, the HQ-RMs in the gel electrolyte weakened the self-discharging behavior by providing a strong binding attachment of charged ions on the porous graphitized carbon electrodes after the redox reactions. The micro-supercapacitors with HQ gel (HQ-MSCs) showed excellent energy storage performance, including a high energy volumetric capacitance of 255 mF cm−3 at a current of 1 µA, which is 2.7 times higher than the micro-supercapacitors based on bare-gel electrolyte composites without HQ-RMs (b-MSCs). The HQ-MSCs showed comparatively low self-discharging behavior with an open circuit potential drop of 37% compared to the b-MSCs with an open circuit potential drop of 60% after 2000 s. The assembled HQ-MSCs exhibited high mechanical flexibility over the applied external tensile and compressive strains. Additionally, the HQ-MSCs show the adequate circuit compatibility within series and parallel connections and the good cycling performance of capacitance retention of 95% after 3000 cycles. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2079-4991 |
| Relation: |
https://www.mdpi.com/2079-4991/11/11/3027; https://doaj.org/toc/2079-4991 |
| DOI: |
10.3390/nano11113027 |
| URL الوصول: |
https://doaj.org/article/11051a7c873f4a7686b6916f614c1830 |
| رقم الانضمام: |
edsdoj.11051a7c873f4a7686b6916f614c1830 |
| قاعدة البيانات: |
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