期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 185, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.reactfunctpolym.2023.105534
关键词
Catalyst selectivity; Conjugated polymer; CO 2 uptake; SWCNT; Supercapacitors
The study emphasizes the significance of catalyst selectivity in the preparation of homocoupling polymers for CO2 gas adsorption and supercapacitor applications. N,N'-bicarbazole based conjugated porous organic polymers (TGs) were synthesized using sonogashira, glaser, and Eglington protocols. TGPd/Cu displayed excellent CO2 adsorption and was further utilized as an electrode for supercapacitor studies. The incorporation of single walled carbon nanotubes (SWCNT) into TGPd/Cu enhanced its electrochemical performance and demonstrated a promising capability for electrochemical energy storage.
The present study discusses the importance of catalyst selectivity for the preparation of homocoupling polymers for CO2 gas adsorption and supercapacitor applications. N, N '-bicarbazole based conjugated porous organic polymers (TGs) have been synthesized through sonogashira (TGPd/Cu), glaser (TGCuCl) and Eglington (TGCu(OAc) 2) protocols. Here, TGPd/Cu acquired high specific surface area (923 m2 g-1), uniform pores (2 nm), and excellent CO2 adsorption (16.1 wt%). The synthesized TG polymers was utilized as efficient electrode for supercapacitor studies. TGPd/Cu exhibits a maximum capacitance of 248 F g-1 at 0.5 A g-1 current density. To enhance the electrochemical performances, the prepared TGs melded with single walled carbon nanotubes (SWCNT) and the fabricated TGPd/Cu/SWCNT electrode demonstrates a maximum specific capacitance of 523 F g- 1 at 0.5 A g-1 current density with an outstanding cycling stability of 98.1% after 5000 cycles in three electrode system. The fabricated TGPd/Cu/SWCNT device showed a capacitance of 129 F g-1 at 0.5 A g-1 with high-capacity retention of 82.5% after 5000 cycles in two electrode system. Consequently, TGPd/Cu/SWCNT appear to be promising electroactive material for use as electrode in electrochemical energy storage systems. The satisfactory electrochemical performance can be attributed to the successfully 7C- 7C stacking of the TGPd/Cu onto the nanotube surface and the synergy between TGPd/Cu and highly conductive SWCNT which significantly advanced the electron transport properties of the explored composites.
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