A novel synthetic approach for designing metal-free, redox-active quinoxaline-benzimidazole-based organic polymers with high energy storage capacity
| Autor: | A. A. Ghanwat, Basavraj S. Kalshetti, Vikas B. Patil, Shivshankar R. Mane, Pravin S. Salunkhe, Y. S. Patil, I. A. Dhole |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
02 engineering and technology General Chemistry Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Combinatorial chemistry Catalysis Energy storage 0104 chemical sciences chemistry.chemical_compound Quinoxaline Dicarboxylic acid chemistry Polymerization Materials Chemistry Copolymer Thiophene Cyclic voltammetry 0210 nano-technology |
| Zdroj: | New Journal of Chemistry. 43:14806-14817 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c9nj02877c |
| Popis: | New organic framework materials, namely, polyphenylquinoxaline (QOP) and polyphenylquinoxaline-benzimidazole (QOP-BOP) were designed using a high-temperature (>100 °C) polymerization reaction with different monomers, i.e., 2,5-bis-[(4-benzoylcarbonyl)phenyl]-3-4 diphenyl thiophene (BbcPDT), aromatic tetraamines and biphenyl dicarboxylic acid. The QOP-BOP copolymer exhibited specific capacitance (SC) of 305 F g−1 at the current density of 2 A g−1 and 88% retention of its initial specific capacitance after 1000 cycles, which resulted in good cyclic stability. This work establishes the first use of thiophene integrated with quinoxaline-benzimidazole units for energy storage applications and provides strategies for further developments in the performance of such conjugated materials. Cyclic voltammetry, charge–discharge and electrochemical impedance techniques were used to evaluate the electrochemical parameters, which demonstrated their potential in future energy storage devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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