| Full text | |
| Author(s): |
Santos, Keyla Teixeira
[1]
;
Suffredini, Hugo Barbosa
[1]
;
Wittstock, Gunther
[2]
;
Angelucci, Camilo Andrea
[1]
Total Authors: 4
|
| Affiliation: | [1] Fed Univ ABC, Ctr Nat & Human Sci Inst, Av Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[2] Carl von Ossietzky Univ Oldenburg, Chem Dept, D-261111 Oldenburg - Germany
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | CHEMELECTROCHEM; v. 8, n. 9, p. 1626-1631, MAY 3 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
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 vertical bar 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 (H-2/H+)((IL))parallel to(O-2/H-2)(H2O) achieves 1.34 V with a maximum power density of 0.7 mu Wcm(-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 (H-2/H+)((IL)) half-cell. Besides the relative low fuel cell power, the conceptual device has wide margin to improve, mainly in the cell design. (AU) | |
| FAPESP's process: | 18/06677-6 - Viability Studies of Liquid/Liquid Interfaces and their Use in Electrochemical Devices |
| Grantee: | Janaina de Souza Garcia |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/10292-2 - Investigation of electrochemical processes by Means of Surface Enhanced Raman Spectroscopy. |
| Grantee: | Camilo Andrea Angelucci |
| Support Opportunities: | Regular Research Grants |