Highly conductive, conformable ionic laser-induced graphene electrodes for flexible iontronic devices

© 2024. The Author(s)..

Iontronic devices, recognized for user-friendly soft electronics, establish an electrical double layer (EDL) at the interface between ion gels and electrodes, significantly influencing device performance. Despite extensive research on ion gels and diverse electrode materials, achieving a stable interfacial formation remains a persistent challenge. In this work, we report a solution to address this challenge by employing CO2 irradiation as a bottom-up methodology to directly fabricate highly conductive, conformable laser-induced graphene (LIG) electrodes on a polyimide (PI)-based ion gel. The PI ion gel exhibits exceptional EDL formation at the electrode interface, primarily attributable to efficient ion migration. Particularly, ionic laser-induced graphene (i-LIG) electrodes, derived from the PI ion gel as a precursor, yield high-quality graphene with enhanced crystallinity and an expanded porous structure in the upward direction. This outcome is achieved through a pronounced thermal transfer effect and intercalation phenomenon between graphene layers, facilitated by the presence of ionic liquids (ILs) within the PI ion gel. Ultimately, in comparison to alternative soft electrode-based vertical capacitors, the utilization of i-LIGs and PI ion gels in the vertical capacitor demonstrates reduced interfacial resistance and increased EDL capacitance, emphasizing the extensive potential of iontronic devices. These results not only highlight these features but also introduce a new perspective for advancing next-generation iontronic devices.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Scientific reports - 14(2024), 1 vom: 26. Feb., Seite 4599

Sprache:

Englisch

Beteiligte Personen:

Kim, So Young [VerfasserIn]
Kim, Ji Hong [VerfasserIn]
Kim, Kyeong Nam [VerfasserIn]
Oh, Hayoung [VerfasserIn]
Myung, Sung [VerfasserIn]
Kim, Do Hwan [VerfasserIn]

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Journal Article

Anmerkungen:

Date Revised 29.02.2024

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1038/s41598-024-55082-w

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368991601