| Autor: |
Y. Quintero, S. Herrera, Z. Zapata-Benabithe, A. Manzano-Ramírez, L. Cruz |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
ECS Advances, Vol 2, Iss 4, p 041001 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2754-2734 |
| DOI: |
10.1149/2754-2734/ad16ba |
| Popis: |
Activated graphene oxide seems to be a promising electrode material for electrochemical double-layer capacitors, also known as supercapacitors or ultracapacitors, and other energy storage purposes. This article summarizes the results of our research about the effect of graphene oxide KOH-catalyzed activation on their specific surface area (SSA) and their capacitance, both strongly related to their electrochemical performance. KOH-catalyzed activation increased the SSA values of the reduced graphene oxide (rGO) from ∼783 m ^2 g ^−1 to ∼2144 m ^2 g ^−1 ; it is important to note that the SSA and oxygen-containing groups are two important factors determining electrochemical performance. Moreover, the highest capacitance value was 50.08 F g ^−1 , using 1.0 M H _2 SO _4 as an aqueous electrolyte. Activated graphene-based materials with high SSA support conductive networks decorated with oxygen groups synergistically improve charge storage capability in EDLCs. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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