TY - JOUR
T1 - Proton-conductive inorganic-organic hybrid membranes synthesized from a trimethoxysilylmethylstyrene-fluorophenylvinyl acid copolymer
AU - Hattori, Masatomo
AU - Yamaura, Shin ichi
AU - Zhang, Wei
AU - Sakamoto, Wataru
AU - Yogo, Toshinobu
N1 - Funding Information:
This work was supported by the Project of Advanced Materials Development and Integration of Novel Structured Metallic and Inorganic Materials, the Ministry of Education, Culture, Sports, Science, and Technology in Japan.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/8/5
Y1 - 2015/8/5
N2 - Inorganic-organic hybrid membranes composed of Si-O networks and an aliphatic main-chain polymer backbone were synthesized from an alkoxysilane derivative and an F-substituted phenylvinylphosphonic acid via copolymerization and sol-gel reaction. Thus, (trimethoxysilylmethyl)styrene (TMSMS) was copolymerized with 3-fluorophenyl- vinylphosphonic acid (FC6H4VPA), and the product was hydrolyzed to afford an inorganic-organic hybrid composite. Spectroscopic analysis revealed that the inorganic-organic hybrid structure was constructed via the polymerization of TMSMS and FC6H4VPA and the condensation of methoxy-Si bonds. The membranes showed good thermal stability up to 180°C, and it was found that the aliphatic chains bound to the F-substituted aromatic rings and the Si-O linkages in the hybrid membranes improved their mechanical properties. In addition, the proton conductivity of the membranes depended on the P/Si ratio of the product and increased as the P content increased. Notably, the conductivity at 130°C for the hybrid membrane synthesized with a TMSMS/FC6H4VPA ratio of 1/6 was 1.6×10-3Scm-1 and 6.4×10-2Scm-1 at low and 100% relative humidity (RH), respectively, while its power density at 140°C and 30% RH was 3.0mW/cm2.
AB - Inorganic-organic hybrid membranes composed of Si-O networks and an aliphatic main-chain polymer backbone were synthesized from an alkoxysilane derivative and an F-substituted phenylvinylphosphonic acid via copolymerization and sol-gel reaction. Thus, (trimethoxysilylmethyl)styrene (TMSMS) was copolymerized with 3-fluorophenyl- vinylphosphonic acid (FC6H4VPA), and the product was hydrolyzed to afford an inorganic-organic hybrid composite. Spectroscopic analysis revealed that the inorganic-organic hybrid structure was constructed via the polymerization of TMSMS and FC6H4VPA and the condensation of methoxy-Si bonds. The membranes showed good thermal stability up to 180°C, and it was found that the aliphatic chains bound to the F-substituted aromatic rings and the Si-O linkages in the hybrid membranes improved their mechanical properties. In addition, the proton conductivity of the membranes depended on the P/Si ratio of the product and increased as the P content increased. Notably, the conductivity at 130°C for the hybrid membrane synthesized with a TMSMS/FC6H4VPA ratio of 1/6 was 1.6×10-3Scm-1 and 6.4×10-2Scm-1 at low and 100% relative humidity (RH), respectively, while its power density at 140°C and 30% RH was 3.0mW/cm2.
KW - Copolymerization
KW - Fuel cells
KW - Inorganic-organic hybrid
KW - Proton-conductive membrane
KW - Sol-gel
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U2 - 10.1016/j.memsci.2015.03.086
DO - 10.1016/j.memsci.2015.03.086
M3 - Article
AN - SCOPUS:84929501071
VL - 488
SP - 166
EP - 172
JO - Jornal of Membrane Science
JF - Jornal of Membrane Science
SN - 0376-7388
ER -