Pyridine-based PBI Composite Membranes for PEMFCs

被引：55
|
作者：
Quartarone, E. [1 ,2 ]
Magistris, A. [1 ,2 ]
Mustarelli, P. [1 ,2 ]
Grandi, S. [1 ,2 ]
Carollo, A. [1 ,2 ]
Zukowska, G. Z. [3 ]
Garbarczyk, J. E. [4 ]
Nowinski, J. L. [4 ]
Gerbaldi, C. [5 ]
Bodoardo, S. [5 ]
机构：
[1] Univ Pavia, Dept Phys Chem, I-27100 Pavia, Italy
[2] IENI CNR, I-27100 Pavia, Italy
[3] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland
[4] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland
[5] Politecn Torino, Dept Mat Sci & Chem Engn, I-10129 Turin, Italy
来源：
FUEL CELLS | 2009年 / 9卷 / 04期
关键词：
Composite; Electrolyte; PEMFC; PBI; Raman; POLYMER ELECTROLYTE MEMBRANES; POLYBENZIMIDAZOLE-BASED MEMBRANES; TRANSFORM INFRARED-SPECTROSCOPY; FUEL-CELLS; PERFORMANCE; SYSTEMS;
D O I：
10.1002/fuce.200800149
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Polybenzimiclazole (PBI) activated with H3PO4 is one of the membranes of choice to replace Nafion (R) in PEMFCs in order to allow their use above 100 degrees C. The limits of PBI in terms of acid leaching and low conductivity below 160 degrees C can be overcome by a proper monomer tailoring, and by the addition of new fillers. Here, we report on new pyridine-based PBI membranes with: G) imidazole-silica (SiO2-Im) and 60 mesostructured silica (SBA-15) fillers. Both the thermal stability and the permanent conductivity are improved by adding 5 wt.-% of filler, but SiO2-Im gives the best results. Permanent conductivity values higher than 10(-3) S cm(-1) are obtained at 120 degrees C and 50% R.H. Vibrational spectroscopies (FT-IR and Raman) are used to investigate the relationships among the polymer, the filler and the activating H3PO4 acid.
引用
收藏
页码：349 / 355
页数：7
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