Various energy storage systems widely utilizeconjugated microporous polymers (CMPs) due to their porousarchitecture and expansive surface area, which facilitate efficient iontransport and storage. In our research, we developed twoanthraquinone (ATQ)-based CMPs (ATQ-CMPs) through aSonogashira coupling method. We used 2,6-dibromoanthraquinone(ATQ-Br2), a redox-active precursor, as a building monomer alongwith an ethynyl derivative of triphenylamine (TPA-T) andtetrabenzonaphthalene (TBN-T) to afford TPA-ATQ CMP andTBN-ATQ CMP, respectively. We employed techniques, such asthermogravimetric analysis, high-resolution transmission electronmicroscopy (HR-TEM), scanning electron microscopy (SEM), andFourier-transform infrared spectroscopy (FTIR), to characterizethe structure and thermal properties of these ATQ-CMPs. The TBN-ATQ CMP displayed extensive Brunauer−Emmett−Teller(BET) surface areas (SBET = 161 m2 g−1) and remarkable thermal stability (temperatures of up to 605 °C). These properties made itan excellent candidate for supercapacitor (SC) electrode materials. The electrodes fabricated using the TBN-ATQ CMP exhibited anexceptionally significant specific capacitance of 393 F g−1 when tested at a current density of 1 A g−1. After 5000 cycles at 10 A g−1,TBN-ATQ CMP still had 74.2% capacitance in a three-electrode setup. We also made a symmetrical device using the TBN-ATQCMP. This device had a capacitance of 175 F g−1 at 1 A g−1 and was very stable over 2000 cycles, keeping 92.8% of its capacitance.The TBN-ATQ CMP electrode has better electrochemical performance because it has a redox-active ATQ unit and high SBET. Ourfindings pave the way for simple methods of developing and producing efficient CMP materials using TBN and ATQ for high-performance SCs in both three- and two-electrode configurations
Research Abstract
Research Date
Research Department
Research Journal
ACS Applied Energy Materials
Research Member
Research Publisher
American Chemical Society
Research Rank
International
Research Vol
7 (13)
Research Year
2024
Research Pages
5582-5593