Self-Standing Hydrogels Composed of Conducting Polymers for All-Hydrogel-State Supercapacitors |
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Authors: | Zhaokun Yang Dongjian Shi Weifu Dong Prof Mingqing Chen |
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Institution: | Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122 P.R. China |
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Abstract: | Conducting polymer hydrogels that are capable of contacting with electrolytes at the molecular level, represent an important electrode material. However, the fabrication of self-standing hydrogels merely composed of conducting polymers is still challenging owing to the absence of reliable methods. Herein, a novel and facile macromolecular interaction assisted route is reported to fabricate self-standing hydrogels consisting of polyaniline (PANi: providing high electrochemical activity) and poly(3,4-ethylenedioxythiophene) (PEDOT: enabling high electronic conductivity). Owing to the synergistic effect between them, the self-standing hydrogels possess good mechanical properties and electronic/electrochemical performances, making them an excellent potential electrode for solid-state energy storage devices. A proof-of-concept all-hydrogel-state supercapacitor is fabricated, which exhibits a high areal capacitance of 808.2 mF cm?2, and a high energy density of 0.63 mWh cm?3 at high power density of 28.42 mW cm?3, superior to many recently reported conducting polymer hydrogels based supercapacitors. This study demonstrates a novel promising strategy to fabricate self-standing conducting polymer hydrogels. |
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Keywords: | all-hydrogel-state supercapacitors conducting polymers macromolecular interactions self-standing hydrogels |
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