Journal
CELL REPORTS PHYSICAL SCIENCE
Volume 2, Issue 9, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.xcrp.2021.100562
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Funding
- National Research Foundation (NRF) of Korea -Ministry of Science, ICT & Future Planning [NRF2017M3D1A1039287, NRF2021R1A2C2004206]
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The development of fully three-dimensional (3D)-printed FTASSCs has successfully overcome the trade-off between transparency and capacitance, leading to higher performance and superior capacitive figure of merit values. Additionally, these FT-ASSCs exhibit excellent cyclic stability and mechanical robustness.
Roll-to-roll (R2R) fabrication of flexible and transparent all-solid-state supercapacitors (FT-ASSCs) is extremely challenging because of the classic trade-off between transparency and capacitance. In this work, we develop fully three-dimensional (3D)-printed, sandwich-type FTASSCs comprised of 3D line-patterned carbon black (CB)/Ag/CB electrodes on a transparent dialysis membrane (DM) separator. By tailoring the line pitch of the 3D electrodes, our FT-ASSC is able to achieve more than 80% optical transmittance and significantly higher areal capacitance than an opaque ASSC. More importantly, the performance of 3D-printed FT-ASSCs is unrestricted by the transparency-capacitance trade-off, and they exhibit a superior capacitive figure of merit value compared with state-of-the-art FT-ASSCs reported in the literature. Additionally, our FT-ASSCs demonstrate excellent cyclic stability and mechanical robustness because of the chemical and mechanical stability of the DM separator and effective encapsulation of polyurethane. The single-flow 3D printing technique introduced here can meet the requirements for industrial-scale R2R manufacturing of energy storage devices.
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