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

Autor(es)

Santos, Keyla Teixeira ^[1] ; Suffredini, Hugo Barbosa ^[1] ; Wittstock, Gunther ^[2] ; Angelucci, Camilo Andrea ^[1]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: CHEMELECTROCHEM; v. 8, n. 9, p. 1626-1631, MAY 3 2021.
• Citações Web of Science: 1

Resumo

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)

• Processo FAPESP: 18/06677-6 - Estudo da Viabilidade da Utilização de Interfaces Líquido/Líquido em Dispositivos Eletroquímicos
• Beneficiário: Janaina de Souza Garcia
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/10292-2 - Espectroscopia Raman amplificada por superfície (SERS) aplicado a processos eletroquímicos.
• Beneficiário: Camilo Andrea Angelucci
• Modalidade de apoio: Auxílio à Pesquisa - Regular