RT Journal Article
SR Electronic
T1 Ultrahigh areal number density solid-state on-chip microsupercapacitors via electrohydrodynamic jet printing
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP eaaz1692
DO 10.1126/sciadv.aaz1692
VO 6
IS 10
A1 Lee, Kwon-Hyung
A1 Lee, Seong-Sun
A1 Ahn, David B.
A1 Lee, Jaehyun
A1 Byun, Doyoung
A1 Lee, Sang-Young
YR 2020
UL http://advances.sciencemag.org/content/6/10/eaaz1692.abstract
AB 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).