Nitrogen- and Sulfur-Rich Microporous Carbons Derived from Conjugated Microporous Polymers for CO₂ Uptake, Supercapacitor Energy Storage, and Electrochemical Hydrogen Production

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 23, 2025

In this work, we synthesized Py-DPABT CMP through Sonogashira–Hagihara cross-coupling reactions between N4,N7-bis(4-bromophenyl)-N4,N7-diphenylbenzo[c][1,2,5]thiadiazole-4,7-diamine (DPABT-Br2) and 1,3,6,8-tetraethynylpyrene (Py-T). This was subsequently carbonized at 500 700 °C transformed into a porous carbonaceous electrode precursor for supercapacitors (SCs), yielding CMP-500 CMP-700 containing N S heteroatoms. Using distinct analytical methods, investigated the electrochemical characteristics, CO2 uptake, configuration, porosity, thermal stability, chemical structure of before after carbonization °C, respectively. After carbonization, material (Py-DPABT CMP-500) achieved BET surface area (SABET) 423 m2 g–1 adsorption capacity reached 3.55 mmol 0 °C. Electrochemical evaluations revealed that exhibited enhanced performance when utilized as supercapacitor electrodes, facilitated by According to three-electrode analyses, specific capacitances up 973 F 1 A g–1. Additionally, they demonstrated exceptional durability, maintaining 98% their 2000 cycles tested current 10 Furthermore, capacitance symmetric coin cell 627 The hydrogen evolution reaction were assessed in M KOH electrolyte utilizing setup. catalyst density mA cm–2 with an overpotential 325 mV Tafel slope 169 dec–1. it low charge transfer resistance (Rct) 88 Ω substantial double-layer (Cdl) 72.8 mF cm–2, highlighting its potential efficient electrocatalyst HER applications. These findings underscore practical applications investigate synergistic effects heteroatoms process CMPs, enhancing suitability supercapacitor, HER.

Language: Английский

Pyrene-Linked Covalent Organic Polymer/Single-Walled Carbon Nanotubes Hybrids as High-Performance Electrodes for Supercapacitive Energy Storage

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Language: Английский

Benzoxazine-linked polyhedral oligomeric silsesquioxane: 3D porous organic-inorganic polymer for improved CO2 capture and supercapacitor performance

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2025, Volume and Issue: unknown, P. 106098 - 106098

Published: March 1, 2025

Language: Английский