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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Conceptual Membraneless Fuel Cell Device Based On Ionic Liquid vertical bar Water Interface

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Santos, Keyla Teixeira [1] ; Suffredini, Hugo Barbosa [1] ; Wittstock, Gunther [2] ; Angelucci, Camilo Andrea [1]
Total Authors: 4
[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 MAR 2021.
Web of Science Citations: 0

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 type: 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 type: Regular Research Grants