Free-standing PEDOT/polyaniline conductive polymer hydrogel for flexible solid-state supercapacitors
| Autor: | Jun Ma, Borui Bai, Zhaokun Yang, Mingqing Chen, Dusan Losic, Dongjian Shi, Aidong Qiu |
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| Přispěvatelé: | Yang, Zhaokun, Ma, Jun, Bai, Borui, Qiu, Aidong, Losic, Dusan, Shi, Dongjian, Chen, Mingqing |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering Oxide Nanotechnology 02 engineering and technology conductive polymer hydrogels 010402 general chemistry Electrochemistry 01 natural sciences polyaniline law.invention chemistry.chemical_compound PEDOT:PSS law Polyaniline supercapacitor PEDOT Conductive polymer Supercapacitor Graphene 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Self-healing hydrogels 0210 nano-technology |
| Zdroj: | Electrochimica Acta. 322:134769 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2019.134769 |
| Popis: | In comparison with inorganic and dry polymeric materials, conductive polymer hydrogels are promising soft electrode materials due to their unique solid-liquid interface. Nevertheless, the existing hydrogels lack either excellent electrochemical performance or mechanical resilience. Here we report a strategy to overcome this limitation by integrating two types of conducting polymers – polyaniline and PEDOT – through a molecular bridge provided by phytic acid. The acid replaces some of PSS, promoting transformation of PEDOT chains from the benzoic structure to the quinoid structure. The resulting hydrogel consists of a 3D network of PEDOT sheets where PANi are inlaid; it has highly improved mechanical properties in comparison with PEDOT hydrogel due to molecular interactions between PANi and PEDOT. A flexible solid-state supercapacitor based on PEDOT/PANi hydrogel delivered a high volumetric energy density of 0.25 mWh cm−3 at a power density of 107.14 mW cm−3, surpassing many of previously reported solid-state supercapacitors based on PEDOT and hydrogels of other conducting polymers and graphene oxide. This study represents a new direction for the development of conductive polymer composite hydrogels which combine excellent electrochemical performance with mechanical resilience Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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