Recent and Future Research Related to the Use of Conducting Polymers for Supercapacitors

Bao, Le Quoc; Dao, Tran Trong; Sáha, Petr

doi:10.1007/978-3-030-98021-4_16

Cited by 3 publications

References 48 publications

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Ion‐selectivity of polypyrrole carbide‐derived carbon films in aqueous electrolytes

Bao

Zondaka

Nguyen

2022

J of Applied Polymer Sci

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In this work, we have combined polypyrrole (PPy) doped with dodecylbenzene sulfonate (DBS À ) and carbide-derived carbon (CDC), forming PPyCDC (PPy/DBS-CDC) composites. Scanning electron microscopy revealed for PPyCDC that most CDC particles are located on the surface of the films. This work's main goal is to investigate the ion-selectivity of the novel PPyCDC composite by linear actuation studies, with primary actuation taking place at discharging. Four different aqueous electrolytes are applied with hydrophobic cations, such as TMA + (tetramethylammonium ion) and EDMI + (1-ethyl-2,-3-dimethyl imidazolium ion). They are hydrophilic with Li + (lithium-ion) and Na + (sodium ion). It was possible to distinguish each cation from linear actuation studies, either cyclic voltammetry or square wave potential steps. In the case of pristine PPy/DBS, that ion differentiation could not separate. Chronopotentiometric measurements of both films (PPyCDC and PPy/DBS) were performed. It could control (read) the strain for PPyCDC films and the potential at constant current density. The electrical energy adapts to exchange cations, forming a sensor device with ion-selectivity of the applied cations considering their hydrophilic and hydrophobic characteristics. The best specific capacitance (energy storage) is found for EDMI + cations in PPyCDC films with 193 F g À1 , enabling this composite in multifunctional applications.

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