| Autor: |
Mamta Devi, Chetna Madan, Aditi Halder, Swati Sharma |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Carbon Trends, Vol 9, Iss , Pp 100221- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0569 |
| DOI: |
10.1016/j.cartre.2022.100221 |
| Popis: |
We introduce a metal-free, high-surface-area N-containing carbon material prepared via single-step laser-induced carbonization of polyimide films as an electrocatalyst for oxygen evolution reaction (OER), which obviates the need for a loading substrate. Our inexpensive and scalable one-step fabrication process yields porous carbon films with a high atomic ratio of pyridinic and pyrrolic N functional groups. The material is activated by inducing additional oxygen-rich functional groups, resulting in more electrochemically active sites and less charge transfer resistance for superior electrocatalytic performance. The activated laser-carbon exhibits an excellent catalytic activity towards OER with an overpotential of 470 mV at a current density of 10 mA cm−2, which is much lower compared to other metal-free electrocatalysts. This multifunctional carbon material has an immense potential for the fabrication of lightweight water electrolyzers as well as in the designing of electrode for flexible solid-state metal-air batteries. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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