RT Journal Article
T1 Sulfonated Polysulfone/TiO2(B) Nanowires Composite Membranes as Polymer Electrolytes in Fuel Cells
A1 Martínez Morlanes, María José
A1 Torre Gamarra, Carmen de la
A1 Pérez Prior, María Teresa
A1 Lara-Benito, Sara
A1 Rio, Carmen del
A1 Varez, Alejandro
A1 Levenfeld Laredo, Belén
AB New proton conducting membranes based on sulfonated polysulfone (sPSU) reinforcedwith TiO2(B) nanowires (1, 2, 5 and 10 wt.%) were synthesized and characterized. TiO2(B) nanowireswere synthesized by means of a hydrothermal method by mixing TiO2 precursor in aqueous solutionof NaOH as solvent. The presence of the TiO2(B) nanowires into the polymer were confirmedby means of Field Emission Scanning Electron Microscopy, Fourier transform infrared and X-raydiffraction. The thermal study showed an increase of almost 20 ◦C in the maximum temperatureof sPSU backbone decomposition due to the presence of 10 wt.% TiO2(B) nanowires. Water uptakealso is improved with the presence of hydrophilic TiO2(B) nanowires. Proton conductivity ofsPSU with 10 wt.% TiO2(B) nanowires was 21 mS cm−1(at 85 ◦C and 100% RH). Under theseexperimental conditions the power density was 350 mW cm−2similar to the value obtained forNafion 117. Considering all these obtained results, the composite membrane doped with 10 wt.%TiO2(B) nanowires is a promising candidate as proton exchange electrolyte in fuel cells (PEMFCs),especially those operating at high temperatures.
PB MDPI
SN 2073-4360
YR 2021
FD 2021-06-21
LK https://hdl.handle.net/10016/35161
UL https://hdl.handle.net/10016/35161
LA eng
NO The authors would like to thank the following Institution for funding the Projects: Agencia Española de Investigación /Fondo Europeo de Desarrollo Regional (FEDER/UE): Projects PID2019-106662RBC43 and MAT2016-78362-C4-3-R. Comunidad de Madrid: Projects "Excelencia para el Profesorado Universitario"—EPUC3M04) and PEM4ENERGY-CM-UC3M.
DS e-Archivo
RD 27 jul. 2024