| Autor: |
Periyasamy T; Department of Fiber System Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea., Asrafali SP; School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea., Kim SC; School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea., Lee J; Department of Fiber System Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea. |
| Jazyk: |
angličtina |
| Zdroj: |
Polymers [Polymers (Basel)] 2024 Feb 14; Vol. 16 (4). Date of Electronic Publication: 2024 Feb 14. |
| DOI: |
10.3390/polym16040516 |
| Abstrakt: |
A novel porous carbon, derived from polybenzoxazine and subjected to hydrogen peroxide treatment, has been meticulously crafted to serve dual functions as a supercapacitor and a CO 2 capture material. While supercapacitors offer a promising avenue for electrochemical energy storage, their widespread application is hampered by relatively low energy density. Addressing this limitation, our innovative approach introduces a three-dimensional holey carbon ball framework boasting a hierarchical porous structure, thereby elevating its performance as a metal-free supercapacitor electrode. The key to its superior performance lies in the intricate design, featuring a substantial ion-accessible surface area, well-established electron and ion transport pathways, and a remarkable packing density. This unique configuration endows the holey carbon ball framework electrode with an impressive capacitance of 274 F g -1 . Notably, the electrode exhibits outstanding rate capability and remarkable longevity, maintaining a capacitance retention of 82% even after undergoing 5000 cycles in an aqueous electrolyte. Beyond its prowess as a supercapacitor, the hydrogen peroxide-treated porous carbon component reveals an additional facet, showcasing an exceptional CO 2 adsorption capacity. At temperatures of 0 and 25 °C, the carbon material displays a CO 2 adsorption capacity of 4.4 and 4.2 mmol/g, respectively, corresponding to equilibrium pressures of 1 bar. This dual functionality renders the porous carbon material a versatile and efficient candidate for addressing the energy storage and environmental challenges of our time. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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