Abstract In this work, we report large-area, semi-transparent, and flexible all-solid-state supercapacitors (ASSCs) fabricated using scalable D-bar coating, which is compatible with roll-to-roll printing processes. The poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS)-based transparent conducting electrodes (TCEs) show optical transparencies of T550nm > 85% and conductivities of ~3645 S cm−1. An ASSC device (~1 cm2) consists of D-bar coated TCEs and PVA/LiCl gel-electrolyte and exhibits a high areal capacitance per electrode (Ca) of 4.7 mF cm−2, which is about 35% higher than that of ASSC devices containing spin coated TCEs. A PEDOT:PSS ASSCs with the transparency of T550nm > 65% presents stable capacitance up to 10,000 charge/discharge cycles and 5000 bending cycles at a bending radius of 2 mm, demonstrating excellent electrochemical robustness and flexibility. Moreover, the large-area (~64 cm2) ASSC fabricated with D-bar coating exhibited a Ca of 2.9 mF cm−2, a maximum energy density of 18 µWh cm−2 and a power density of 1600 µW cm−2, which outperforms state-of-the-art transparent and flexible ASSCs. The agglomerated PEDOT:PSS nanofibrils and dipper pore size on D-bar coated TCEs, enables efficient ion adsorption/desorption and charge intercalation, which leads to the high performance of the flexible ASSC.

中文翻译：

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采用 D-Bar 涂层工艺的大面积 (64 cm2)、半透明、柔性全固态超级电容器

摘要 在这项工作中，我们报告了使用可扩展 D-bar 涂层制造的大面积、半透明和灵活的全固态超级电容器 (ASSC)，它与卷对卷印刷工艺兼容。聚（3,4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）基透明导电电极（TCE）显示 T550nm > 85% 的光学透明度和~3645 S cm-1 的电导率。ASSC 装置 (~1 cm2) 由 D-bar 涂层 TCE 和 PVA/LiCl 凝胶电解质组成，每个电极的面积电容 (Ca) 为 4.7 mF cm-2，比 ASSC 高约 35%包含旋涂 TCE 的设备。透明度为 T550nm > 65% 的 PEDOT:PSS ASSCs 在弯曲半径为 2 mm 的情况下具有高达 10,000 次充电/放电循环和 5000 次弯曲循环的稳定电容，表现出优异的电化学稳定性和灵活性。此外，用 D-bar 涂层制造的大面积（~64 cm2）ASSC 的 Ca 为 2.9 mF cm-2，最大能量密度为 18 µWh cm-2，功率密度为 1600 µW cm-2，优于最先进的透明和灵活的 ASSC。D-bar 涂层 TCE 上团聚的 PEDOT:PSS 纳米纤丝和北斗孔径，可实现高效的离子吸附/解吸和电荷嵌入，从而实现柔性 ASSC 的高性能。