Skip to main content

Tetrabenzonaphthalene and Redox-Active Anthraquinone-LinkedConjugated Microporous Polymers as Organic Electrodes forEnhanced Energy Storage Efficiency

Research Authors
Mohamed Gamal Mohamed, Mervat Ibrahim, Nian Ping Chen, Abdul Basit, Yang Chin Kao, Aya Osama Mousa, Maha Mohamed Samy, Shiao-Wei Kuo
Research Abstract

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 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