Scalable Asymmetric Supercapacitors Based on Hybrid Organic/Biopolymer Electrodes
| Autor: | Fatima Nadia Ajjan, Liangqi Ouyang, Mikhail Vagin, Tomasz Rębiś, Luis Ever Aguirre, Olle Inganäs |
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| Rok vydání: | 2017 |
| Předmět: |
Conductive polymer
Supercapacitor Materials science Renewable Energy Sustainability and the Environment 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Capacitance 0104 chemical sciences PEDOT:PSS Chemical engineering Electrode engineering Biopolymer Composite material 0210 nano-technology Layer (electronics) General Environmental Science |
| Zdroj: | Advanced Sustainable Systems. 1:1700054 |
| ISSN: | 2366-7486 |
| Popis: | A trihybrid bioelectrode composed of lignin, poly(3,4-ethylenedioxythiophene) (PEDOT), and poly(aminoanthraquinone) (PAAQ) is prepared by a two-step galvanostatic electropolymerization, and characterized for supercapacitor applications. Using PEDOT/Lignin as a base layer, followed by the consecutive deposition of PAAQ, the hybrid electrode PEDOT/Lignin/PAAQ shows a high specific capacitance of 418 F g−1 with small self-discharge. This trihybrid electrode material can be assembled into symmetric and asymmetric supercapacitors. The asymmetric supercapacitor uses PEDOT + Lignin/PAAQ as positive electrode and PEDOT/PAAQ as negative electrode, and exhibits superior electrochemical performance due to the synergistic effect of the two electrodes, which leads to a specific capacitance of 74 F g−1. It can be reversibly cycled in the voltage range of 0–0.7 V. More than 80% capacitance is retained after 10 000 cycles. These remarkable features reveal the exciting potential of a full organic energy storage device with long cycle life. |
| Databáze: | OpenAIRE |
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