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Scalable Fabrication and Integration of Graphene Microsupercapacitors through Full Inkjet Printing
KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.ORCID iD: 0000-0002-6430-6135
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2017 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 11, no 8, p. 8249-8256Article in journal (Refereed) Published
Abstract [en]

A simple full-inkjet-printing technique is developed for the scalable fabrication of graphene-based microsupercapacitors (MSCs) on various substrates. High-performance graphene inks are formulated by integrating the electrochemically exfoliated graphene with a solvent exchange technique to reliably print graphene interdigitated electrodes with tunable geometry and "thickness. Along with the printed polyelectrolyte, poly(4-styrenesulfonic acid), the fully printed graphene-based MSCs attain the highest areal capacitance of similar to 0.7 mF/cm(2), substantially advancing the state-of-art of all-solid-state MSCs with printed graphene electrodes. The full printing solution enables scalable fabrication of MSCs and effective connection of them in parallel and/or in series at various scales. Remarkably, more than 100 devices have been connected to form large-scale MSC arrays as power banks on both silicon wafers and Kapton. Without any extra protection or encapsulation, the MSC arrays can be reliably charged up to 12 V and retain the performance even 8 months after fabrication.

Place, publisher, year, edition, pages
2017. Vol. 11, no 8, p. 8249-8256
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-214515DOI: 10.1021/acsnano.7b03354ISI: 000408520900076PubMedID: 28682595Scopus ID: 2-s2.0-85028458614OAI: oai:DiVA.org:kth-214515DiVA, id: diva2:1145778
Note

QC 20170929

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-09-29Bibliographically approved

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Li, JiantongDelekta, Szymon SollamiÖstling, Mikael

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