A 2-D microporous covalent organic framework for high-performance supercapacitor electrode

• Published in: Materials letters Vol. 308; p. 131229
• Main Authors: Xue, Rui, Zheng, Yan-Ping, Qian, De-Quan, Xu, Da-Ying, Liu, Yin-Sheng, Huang, Sheng-Li, Yang, Guo-Yu
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2022; Elsevier BV
• Subjects: Capacitance; Chemical synthesis; COFs; Covalent organic frameworks; Materials science; Melamine; Nanoparticles; Phosphazene; Pore size; Porous material; Nanoparticles; Covalent organic frameworks; Porous material; COFs
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2021.131229

•A novel phosphazene-triazinyl based COF was prepared by a simple and cheap method.•HM-COF showed the capacitance of 145 F∙g−1 at the current density of 0.5 A∙g−1.•HM-COF showed great long-term cycling performance (84.6%@30000 cycles). As a new multifunctional organic porous polymer, COFs have attracted more and more attention. A microporous phosphazene-triazinyl based COF (HM-COF) was designed and synthesized by polymerization reaction of hexachlorocyclo-triphosphazene (HCCP) and melamine (MA) under simple and easy reaction conditions. The BET specific surface area and pore size of HM-COF are 305.7 m2∙g−1 and 12.6 Å, respectively. The maximum specific capacitance of HM-COF was calculated as 145 F∙g−1 at current density of 0.5 A∙g−1, and the capacitance retention was 84.6 % of its initial capacitance after 30, 000 cycles.