Journal
FRONTIERS IN MATERIALS
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2019.00242
Keywords
soluble COPs; flexible electrode; supercapacitors; in-situ exfoliation; electrostatic force
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Funding
- National Key Research and Development Program of China [2017YFA0206500]
- Natural Science Foundation of China [21676020]
- Beijing Natural Science Foundation [17L20060]
- Young Elite Scientists Sponsorship Program by CAST [2017QNRC001]
- State Key Laboratory of Organic-Inorganic Composites [OIC-201801007]
- Distinguished Scientist Programat BUCT [buctylkxj02]
- Double-First-Class construction projects [XK180301, XK1804-02]
- 111 Project of China [B14004]
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Covalent organic polymer (COPs) have emerged promising potentials for the fabrication of flexible supercapacitors. Numerous efforts are devoting to the promotion of processability of COPs and broaden their applications in practical devices. Herein we have developed a fully conjugated two-dimensional COP material (COPBTC-Mn) with nitrogen coordinated metal centers. The unique structures of COPBTC-Mn endow it with high solubility via an in-situ exfoliation pathway and the capability to adsorb onto carbon-based matrix by electrostatic force. COPBTC-Mn demonstrated superior processability, reliability, and repeatability for the fabrication of flexible electrodes of supercapacitors. Besides, superior to the electrodes based on traditional COPs, our as-prepared flexible electrodes exhibited a specific capacitance as high as 325 F g(-1) with the current density of 0.2 A g(-1) and excellent stability after charge/discharge cycles.
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