Abstract:
:Microsupercapacitors (MSCs) have garnered considerable attention as a promising power source for microelectronics and miniaturized portable/wearable devices. However, their practical application has been hindered by the manufacturing complexity and dimensional limits. Here, we develop a new class of ultrahigh areal number density solid-state MSCs (UHD SS-MSCs) on a chip via electrohydrodynamic (EHD) jet printing. This is, to the best of our knowledge, the first study to exploit EHD jet printing in the MSCs. The activated carbon-based electrode inks are EHD jet-printed, creating interdigitated electrodes with fine feature sizes. Subsequently, a drying-free, ultraviolet-cured solid-state gel electrolyte is introduced to ensure electrochemical isolation between the SS-MSCs, enabling dense SS-MSC integration with on-demand (in-series/in-parallel) cell connection on a chip. The resulting on-chip UHD SS-MSCs exhibit exceptional areal number density [36 unit cells integrated on a chip (area = 8.0 mm × 8.2 mm), 54.9 cells cm-2] and areal operating voltage (65.9 V cm-2).
journal_name
Sci Advjournal_title
Science advancesauthors
Lee KH,Lee SS,Ahn DB,Lee J,Byun D,Lee SYdoi
10.1126/sciadv.aaz1692subject
Has Abstractpub_date
2020-03-06 00:00:00pages
eaaz1692issue
10issn
2375-2548pii
aaz1692journal_volume
6pub_type
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