Graphene oxide influence on selected properties of polymer fuel cells based on Nafion

Agnieszka Iwan, Felipe Caballero-Briones, Marek Malinowski, Michal Filapek, Igor Tazbir, Jesus Guerrero-Contreras, Sathish Kumar Kamaraj

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

14 Citas (Scopus)

Resumen

Graphene oxide (GO) was used as an additive to the anode, to modify the electrochemical properties of polymer fuel cells (PEMFC) based on Nafion. GO was obtained by modified Hummers method and fully characterized by Raman, FTIR, X-ray, TEM, electrochemically (CV) and Surface Area and Porosity Analyzer. PEMFC with a GO-based anode containing about 30% less Pt, was constructed and compared with a cell with standard anodes. The electrodes were electrochemically tested at 25 and 60 °C. A maximum power density of 134 mW/cm2 with a current density of 374 mA/cm2 was achieved for PEMFC with GO-based anode at 60 °C. The electrochemical surface area (ECSA) of the PEMFC with GO-based anode was about two times higher than that of the reference device. The electrochemical characterization as well as the Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) analysis indicate that GO in the anode reduced Pt agglomeration, as a consequence of the increased surface area and decreased average pore width, compared with the reference electrode. Well-fitted equivalent circuits were proposed and discussed after an electrochemical impedance spectroscopy study of the constructed devices.

Idioma originalInglés
Páginas (desde-hasta)15359-15369
Número de páginas11
PublicaciónInternational Journal of Hydrogen Energy
Volumen42
N.º22
DOI
EstadoPublicada - 1 jun. 2017

Huella

Profundice en los temas de investigación de 'Graphene oxide influence on selected properties of polymer fuel cells based on Nafion'. En conjunto forman una huella única.

Citar esto