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

Abstract

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 °C, yielding An-CTF-10-400, An-CTF-20-400, An-CTF-10-500, and An-CTF-20-500 microporous materials. According to N2 adsorption–desorption analyses (BET), these An-CTFs produced exceptionally high specific surface areas ranging from 406–751 m2·g−1. Furthermore, An-CTF-10-500 had a capacitance of 589 F·g−1, remarkable cycle stability up to 5000 cycles, up to 95% capacity retention, and strong CO2 adsorption capacity up to 5.65 mmol·g−1 at 273 K. As a result, our An-CTFs are a good alternative for both electrochemical energy storage and CO2 uptake.

Ultrastable Porous Organic Polymers Containing Thianthrene and Pyrene Units as Organic Electrode Materials for Supercapacitors

“…Besides this, the increase in global warming is evidence that fossil fuels also affect the environment through consistent carbon dioxide (CO 2 ) emissions. , As a result, it is vital to design some effective technologies to stockpile energy and address the current issues. Supercapacitors are often used for their effectiveness in energy storage, high power density, cycling stability, higher energy density, a longer cycling life, and a faster charge/discharge rate than that of ordinary dielectric capacitors , and hence are ideal choices for electronic and electrical appliances. − The supercapacitor has a larger power output than a secondary battery (0.5–10 kW kg –1 ) but a lower power output than a capacitor. Nonetheless, the supercapacitor has the highest specific energy.…”

Progress in the self-assembly of organic/inorganic polyhedral oligomeric silsesquioxane (POSS) hybrids

“…Recently, porous organic polymers (POPs) have been attracting much attention because they possess high surface areas, low densities, high chemical and thermal stabilities, and tunable porosities; they can be classified into hypercrosslinked polymers, covalent organic frameworks, covalent triazine frameworks, and conjugated microporous polymers. 153–163 These POPs have a diverse range of applications in energy storage, gas capture and separation, photocatalysis, H 2 evolution, and optical devices. Incorporating DDSQ or POSS into organic polymers to form self-assembled and ordered structures is also of interest when preparing porous organic/inorganic microporous polymers (POIPs).…”

Ultrastable Conjugated Microporous Polymers Containing Benzobisthiadiazole and Pyrene Building Blocks for Energy Storage Applications

“…With this in consideration, an ideal electrode material should meet several characteristics, such as having ideal redox-active sites, high specific surface area (SSA), good conductivity, suitable pore width, and good chemical and thermal stability, as well as being eco-friendly in nature. Extensive research on CMPs reveals that the introduction of heteroatoms (N, B, S, P) in the CMPs can be used to obtain materials with tunable pore size and PC [ 16 , 17 , 18 , 19 , 20 , 21 ].…”