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Spray-coated paper supercapacitors
Linköping University, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware.ORCID iD: 0000-0001-8485-6209
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware.ORCID iD: 0000-0002-2904-7238
Linköping University, Sweden.
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2020 (English)In: npj Flexible Electronics, ISSN 2397-4621, Vol. 4, no 1, article id 14Article in journal (Refereed) Published
Abstract [en]

The increasing demands to further electrify and digitalize our society set demands for a green electrical energy storage technology that can be scaled between very small, and heavily distributed electrical energy sources, to very large volumes. Such technology must be compatible with fast-throughput, large-volume and low-cost fabrication processes, such as using printing and coating techniques. Here, we demonstrate a sequential production protocol to fabricate supercapacitors including electrodes based on cellulose nanofibrils (CNF) and the conducting polymer PEDOT:PSS. Thin and lightweight paper electrodes, carbon adhesion layers and the gel electrolyte are fabricated using spray coating, screen printing, and bar coating, respectively. These all solid-state supercapacitors are flexible, mechanically robust and exhibit a low equivalent series resistance (0.22 Ω), thus resulting in a high power density (∼104 W/kg) energy technology. The supercapacitors are combined and connected to a power management circuit to demonstrate a smart packaging application. This work shows that operational and embedded supercapacitors can be manufactured in a manner to allow for the integration with, for instance smart packaging solutions, thus enabling powered, active internet-of-things (IoT) devices in a highly distributed application. © 2020, The Author(s).

Place, publisher, year, edition, pages
Nature Research , 2020. Vol. 4, no 1, article id 14
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Natural Sciences
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URN: urn:nbn:se:ri:diva-45604DOI: 10.1038/s41528-020-0079-8Scopus ID: 2-s2.0-85087968287OAI: oai:DiVA.org:ri-45604DiVA, id: diva2:1458206
Note

Funding details: Wallenberg Wood Science Center, WWSC; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding text 1: The authors would like to thank DPP AB for supplying the patterned current collectors, RISE Bioeconomy for supplying CNF, and the Treesearch research platform access to lab infrastructure. The authors acknowledge Hjalmar Granberg and Anurak Sawatdee for fruitful discussions. Financing was provided from the Swedish foundation for strategic research, Knut and Alice Wallenberg Foundation (Wallenberg Wood Science Center) and the Önnesjö foundation. Open access funding provided by Linköping University.

Available from: 2020-08-14 Created: 2020-08-14 Last updated: 2023-06-09Bibliographically approved

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Brooke, RobertEdberg, Jesper

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