| Autor: |
Santos, Keyla Teixeira, Suffredini, Hugo Barbosa, Wittstock, Gunther, Angelucci, Camilo Andrea |
| Předmět: |
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| Zdroj: |
ChemElectroChem; 5/3/2021, Vol. 8 Issue 9, p1626-1631, 6p |
| Abstrakt: |
Ionic liquids (ILs) are considered as a new-generation electrolyte for electrochemical devices such as fuel cells. When in contact with water, ILs can form a liquid j liquid interface due to their hydrophobicity. This feature allows us to build a conceptual membraneless device for energy generation by combining the oxygen reduction and hydrogen oxidation reactions in acid aqueous electrolyte and in [Bmim][PF6], respectively. The IL j water interface serves as an ion-exchange interface, allowing the proton transfer between the phases. The open circuit voltage (OCV) between the two half-cells achieves 1.34 V with a maximum power density of 0.7 µWcm-2 at room temperature. Changes in the pH show no influence in the Galvani potential difference resulted from the IL j water interface and in the ðH2=HþÞILÞhalfcell. Besides the relative low fuel cell power, the conceptual device has wide margin to improve, mainly in the cell design. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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