1. Monolithic flexible supercapacitors drawn with nitrogen-doped carbon nanotube-graphene ink.
- Author
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Zhu, Sheng, Sheng, Jian, Jia, Guodong, Zhang, Zeyao, Guo, Jia, Wang, Meng, Ni, Jiangfeng, and Li, Yan
- Subjects
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SUPERCAPACITORS , *ENERGY density , *CONDUCTIVE ink , *MIRROR images , *CARBON nanotubes , *SUPERCAPACITOR electrodes , *NITROGEN - Abstract
Flexible supercapacitor with all components monolithically integrated into an on-chip paper substrate demonstrates excellent electrochemical and mechanical performance. Supercapacitors are drawn with a conductive ink of nitrogen-doped carbon nanotube and graphene ink, which has been prepared without assistance of surfactant. The engineering strategy is intrinsically scalable toward flexible paper devices. [Display omitted] • A surfactant-free ink of nitrogen-doped carbon nanotubes and graphene is prepared. • The electrodes are integrated onto a paper in mirror image. • The resultant supercapacitor presents a high volumetric capacitance of 0.45 F cm−3. • The strategy is intrinsically scalable toward flexible supercapacitors. We demonstrate a facile strategy to fabricate flexible paper-based supercapacitors, in which all the components are integrated onto a paper with poly (vinyl alcohol)/H 3 PO 4 as the gel electrolyte. The electrodes are drawn on both sides of the paper in a mirror image with a surfactant-free ink of nitrogen-doped carbon nanotubes and graphene. The resultant supercapacitors present a high volumetric capacitance of 0.45 F cm−3 and an energy density of 40.0 μWh cm−3. Moreover, this strategy is intrinsically scalable toward flexible energy devices while maintaining their electrochemical and mechanical performance. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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