Ultrastable Covalent Triazine Organic Framework Based on Anthracene Moiety as Platform for High-Performance Carbon Dioxide Adsorption and Supercapacitors

Conductive and porous nitrogen-rich materials have great potential as supercapacitor electrode materials. The exceptional efficiency of such compounds, however, is dependent on their larger surface area and the level of nitrogen doping. To address these issues, we synthesized a porous covalent triazine framework (An-CTFs) based on 9,10-dicyanoanthracene (An-CN) units through an ionothermal reaction in the presence of different molar ratios of molten zinc chloride (ZnCl2) at 400 and 500 degrees C, yielding An-CTF-10-400, An-CTF-20-400, An-CTF-10-500, and An-CTF-20-500 microporous materials. According to N-2 adsorption-desorption analyses (BET), these An-CTFs produced exceptionally high specific surface areas ranging from 406-751 m(2)center dot g(-1). Furthermore, An-CTF-10-500 had a capacitance of 589 F center dot g(-1), remarkable cycle stability up to 5000 cycles, up to 95% capacity retention, and strong CO2 adsorption capacity up to 5.65 mmol center dot g(-1) at 273 K. As a result, our An-CTFs are a good alternative for both electrochemical energy storage and CO2 uptake.

Automated summary

Conductive and porous nitrogen-rich materials have potential as supercapacitor electrodes. A porous covalent triazine framework (An-CTFs) was synthesized based on 9,10-dicyanoanthracene (An-CN) units, yielding microporous materials with high surface areas. These An-CTFs exhibited high capacitance, cycle stability, and CO2 adsorption capacity, making them a promising option for electrochemical energy storage and CO2 uptake.