An Ionic Capacitor for Integrated Iontronic Circuits

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Organic electronics, in combination with custom polyelectrolytes, enables solid- and hydrogel-state circuit components using ionic charges in place of the electrons of traditional electronics. This growing field of iontronics leverages anion- and cation-exchange membranes as analogs to n-type and p-type semiconductors, and conjugated polymer electrodes as ion-to-electron converters. To date, the iontronics toolbox includes ionic resistors, ionic diodes, ionic transistors, and analog and digital circuits comprised thereof. Here, an ionic capacitor based on mixed electron-ion conductors is demonstrated. The ionic capacitor resembles the structure of a conventional electrochemical capacitor that is inverted, with an electronically conducting core and two electrolyte ionic conductors. The device is first verified as a capacitor, and then demonstrated as a smoothing element in an iontronic diode bridge circuit driving an organic electronic ion pump (ionic resistor). The ionic capacitor complements the existing iontronics toolbox, enabling more complex and functional ionic circuits, and will thus have implications in a variety of mixed electron-ion conduction technologies.
Publisher
WILEY
Issue Date
2019-04
Language
English
Article Type
Article
Citation

ADVANCED MATERIALS TECHNOLOGIES, v.4, no.4

ISSN
2365-709X
DOI
10.1002/admt.201800494
URI
http://hdl.handle.net/10203/261876
Appears in Collection
MS-Journal Papers(저널논문)
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