Preparation and properties of phosphoric acid doped sulfonated poly(tetra phenyl phthalazine ether sulfone) copolymers for high temperature proton exchange membrane application

Title
Preparation and properties of phosphoric acid doped sulfonated poly(tetra phenyl phthalazine ether sulfone) copolymers for high temperature proton exchange membrane application
Authors
주현철
Keywords
Proton exchange membrane Fuel cell Phosphoric acid Dopping Proton conductivity
Issue Date
2013
Publisher
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Series/Report no.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; vol.38 startpage 6261 endpage 6267
Abstract
Phosphoric acid-doped sulfonated poly(tetra phenyl phthalazine ether sulfone) (PASPTPPES) copolymers were successfully synthesized by the 4,40-dihydroxydiphenylsulfone with 1,2-bis(4-fluorobenzoyl)-3,4,5,6-tetraphenylbenzene (BFBTPB) and 4,40-difluorodiphenylsulfone in sulfolane. Poly(tetra phenyl phthalazine ether sulfone)s (PTPPESs) were prepared via an intramolecular ring-closure reaction of dibenzoylbenzene of precursor and hydrazine. The sulfonated poly(tetra phenyl phthalazine ether sulfone) (SPTPPES) membranes were obtained by sulfonation under concentrated sulfuric acid, and followed phosphoric acid-doped by immersion in phosphoric acid. Different contents of doped and sulfonated unit of PA-SPTPPES (10, 15, 20 mol% of BFBTPB) were studied by FT-IR, 1H NMR spectroscopy, and thermo gravimetric analysis (TGA). The ion exchange capacity (IEC) and proton conductivity of SPTPPESs and PA-SPTPPESs were evaluated with increase of degree of sulfonation and doping level. The PA-SPTPPESs membranes exhibit proton conductivities (80 C, relative humidity 30%) of 41.3 w 74.1 mS/cm and the maximum power densities of PA-SPTPPES 10, 15, and 20 were about 294, 350, and 403 mW/cm2.
URI
http://dx.doi.org/10.1016/j.ijhydene.2012.12.119
http://dspace.inha.ac.kr/handle/10505/31602
ISSN
0360-3199
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Local Access Journal Papers, Reports(기계공학 논문, 보고서)
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