scholarly journals Novel octopus shaped organic–inorganic composite membranes for PEMFCs

2016 ◽  
Vol 41 (36) ◽  
pp. 16160-16166 ◽  
Author(s):  
Qingting Liu ◽  
Quan Sun ◽  
Na Ni ◽  
Fang Luo ◽  
Rong Zhang ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Inorganic Composite

Organic/inorganic composite membranes based on polybenzimidazole and nano-SiO2

2009 ◽  
Vol 54 (28) ◽  
pp. 7536-7541 ◽  
Author(s):  
Hongting Pu ◽  
Lu Liu ◽  
Zhihong Chang ◽  
Junjie Yuan
Keyword(s):  
Composite Membranes ◽  
Nano Sio2 ◽  
Inorganic Composite

Organic-Inorganic Nano Composite Membranes of Sulfonated Poly(ether Sulfone-Ketone) Copolymer and SiO2 for Fuel Cell Application

2007 ◽  
Vol 534-536 ◽  
pp. 97-100
Author(s):  
Dong Hoon Lee ◽  
Hye Suk Park ◽  
Dong Wan Seo ◽  
Whan Gi Kim
Keyword(s):  
Fuel Cell ◽  
Bisphenol A ◽  
Sol Gel ◽  
Composite Membranes ◽  
Exchange Capacity ◽  
Methanol Permeability ◽  
Scanning Calorimetry ◽  
Nano Composite ◽  
Inorganic Composite ◽  
Sulfonated Poly

Novel bisphenol-based wholly aromatic sulfonated poly(ether sulfone-ketone) copolymer and organic-inorganic composite membranes were prepared for operation 80°C in polymer electrolyte membrane fuel cell (PEMFCs). The copolymer were synthesized by direct aromatic nucleophilic substitution polycondensation of 4,4-difluorobenzophenone, 2,2’-disodiumsulfonyl- 4,4’-fluorophenylsulfone (40mole% of bisphenol A) and bisphenol A. Polymerization proceeded quantitatively to high molecular weight in N-methyl-2-pyrrolidinone at 180°C. Organic-inorganic composite membranes were obtained by mixing organic polymers with hydrophilic SiO2 obtained by sol-gel process. The polymer and a series of composite membranes were studied by FT-IR, 1HNMR, differential scanning calorimetry (DSC) and thermal stability. The proton conductivity as a function of temperature decreased as SiO2 content increased, but methanol permeability decreased. The nano composite membranes were found to poses all requisite properties; Ion exchange capacity (1.2meq./g), glass transition temperatures (164-183), and low affinity towards methanol (4.63-1.08x10-7 cm2/S).

Preparation of organic/inorganic composite membranes using two types of polymer matrix via a sol–gel process

2008 ◽  
Vol 181 (2) ◽  
pp. 259-266 ◽  
Author(s):  
Seung-Hee Park ◽  
Jin-Soo Park ◽  
Sung-Dae Yim ◽  
Seok-Hee Park ◽  
Young-Moo Lee ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Sol Gel ◽  
Composite Membranes ◽  
Sol Gel Process ◽  
Inorganic Composite
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