Results 111 to 120 of about 329 (124)

Composite Membrane of Sulfonated Poly (phenylene oxide) Doped with Phosphosilicate Gels for Direct Methanol Fuel Cell

Polymer Bulletin, 2006
The newly developed composite membranes of sulfonated poly (phenylene oxide) (SPPO) doped with phosphosilicate gel were prepared for direct methanol fuel cell (DMFC). SPPO with higher ion exchange capacity (IEC) value (IEC=2.83 mequiv./g) was chosen as polymer matrix, and the phosphosilicate gel with P/Si equal to 1.5 was employed as dopant ...
Deping Lu, Wei Lu, Cuihua Li, Jianhong Liu, Rong Guan   +4 more
openaire   +1 more source

Preparation and characterization of sulfonated poly(phenylene oxide) proton exchange composite membrane doped with phosphosilicate gels

Polymers for Advanced Technologies, 2007
AbstractA new class of proton exchange composite membranes made by incorporating phosphosilicate gels into SPPO matrix was prepared and characterized. The thermal stability was evaluated by TGA and DSC, and the amorphous structure information was provided from XRD.
Wei Lu, Deping Lu, Jianhong Liu, Cuihua Li, Rong Guan   +4 more
openaire   +1 more source

Solid state 1H NMR study, humidity sensitivity and protonic conduction of gel derived phosphosilicate glasses

Journal of Materials Chemistry, 2002
1H Magic Angle Spinning (MAS) NMR and 1H T1 and T1ρ relaxation times measurements were used to investigate structural aspects of gel derived glasses of composition 10P2O5·90SiO2 (10P) and 30P2O5·70SiO2 (30P), with the aim of understanding the different humidity sensitive behaviour observed for films of the same composition.
N. J. CLAYDEN, S. ESPOSITO, P. PERNICE, ARONNE, ANTONIO   +3 more
openaire   +6 more sources

Proton conductive property of composites composed of CsHSO4 or CsH2PO4 and phosphosilicate gel

Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan, 2005
Tezuka, Teruaki, Tadanaga, Kiyoharu, Hayashi, Akitoshi, Tatsumisago, Masahiro   +3 more
openaire   +1 more source

Structural change and proton conductivity of phosphosilicate gel–polyimide composite membrane for a fuel cell operated at 180 °C

Journal of Membrane Science, 2008
Akitoshi Hayashi, Kiyoharu Tadanaga, Masahiro Tatsumisago   +2 more
exaly  

Medium temperature operation of fuel cells using thermally stable proton-conducting composite sheets composed of phosphosilicate gel and polyimide

Journal of Power Sources, 2004
Kiyoharu Tadanaga, Masahiro Tatsumisago, Atsunori Matsuda   +2 more
exaly  

SYNTHESIS AND SURFACE PROPERTIES OF PHOSPHOSILICATE GELS

2003
E. MARENNA, ARONNE, ANTONIO, G. BAGNASCO, P. PERNICE, TURCO, MARIA   +4 more
openaire   +2 more sources

Chemical environment of phosphorus in phosphosilicate gel-derived materials

2007
N. J. Clayden, S. Esposito, PERNICE, PASQUALE, TURCO, MARIA, BAGNASCO, GIOVANNI, MARENNA, Elisa, FANELLI, Esther, ARONNE, ANTONIO   +7 more
openaire   +2 more sources

Phosphosilicate gels: synthesis, structural and surface properties

2004
ARONNE, ANTONIO, MARENNA, Elisa, PERNICE, PASQUALE, BAGNASCO, GIOVANNI, TURCO, MARIA, ESPOSITO, SERENA, FANELLI, Esther   +6 more
openaire   +1 more source

Microstructural evolution of sol-gel-derived phosphosilicate gel with heat treatment

Journal of Materials Science, 2004
Tressler R E, R E Tressler
exaly