TY - JOUR
T1 - SPEEK/PPSU-based organic-inorganic membranes
T2 - proton conducting electrolytes in anhydrous and wet environments
AU - Di Vona, M. Luisa
AU - D'Epifanio, Alessandra
AU - Marani, Debora
AU - Trombetta, Marcella
AU - Traversa, Enrico
AU - Licoccia, Silvia
N1 - Funding Information:
Thanks are due to Ms. Cadia D’Ottavi for her valuable technical assistance. This work has been supported by MIUR (FISR Project Development of composite protonic membranes and innovative electrode configuration for PEFCs).
PY - 2006/8/1
Y1 - 2006/8/1
N2 - A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10-3 S/cm) and wet conditions (σ = 6.4 × 10-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).
AB - A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10-3 S/cm) and wet conditions (σ = 6.4 × 10-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).
KW - Blend
KW - Organic-inorganic telechelic polymer
KW - Polyetheretherketone (PEEK)
KW - Polyphenylsulfone (PPSU)
KW - Proton exchange membrane
UR - http://www.scopus.com/inward/record.url?scp=33745125093&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2005.12.003
DO - 10.1016/j.memsci.2005.12.003
M3 - Article
AN - SCOPUS:33745125093
SN - 0376-7388
VL - 279
SP - 186
EP - 191
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1-2
ER -