Structural influence of hydrophobic diamine in sulfonated poly(sulfide sulfone imide) copolymers on medium temperature PEM fuel cell
- Title
- Structural influence of hydrophobic diamine in sulfonated poly(sulfide sulfone imide) copolymers on medium temperature PEM fuel cell
- Author
- 이기정
- Keywords
- Medium temperature PEMFC; Polymer electrolyte membrane; Sulfonated polyimide
- Issue Date
- 2014-03
- Publisher
- ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
- Citation
- POLYMER,권: 55,호: 6,페이지: 1317-1326
- Abstract
- Sulfonated poly(sulfide sulfone imide) copolymers containing flexible sulfide bond and six-membered imide ring were synthesized by random polycondensation. Two types of membranes were prepared by using sulfide (S-PSI) and sulfide sulfone (S-PSFI) based non-sulfonated diamines to investigate the effects of the hydrophobic component. IECw values were controlled to 1.51-1.94 meq g(-1) depending on the degree of sulfonation (DS) which was in the range of 50-80%. The membrane series showed good thermal stability up to 310 C and mechanical properties (tensile strength >30 MPa). Dimensional stabilities were excellent with 23-35% increases, even at 100 degrees C. Proton conductivities of membranes composed of different hydrophobic diamines display a relatively good correlation with water content and morphology. In fuel cell tests, the S-PSI60 membrane shows relatively high current density of 250 mA cm(-2) at 0.6 V and maximum power density of 175 mW cm(-2) at 120 degrees C, 35% RH, 1.5 atm. (c) 2013 Crown Copyright and Elsevier Limited. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0032386113008963?via%3Dihubhttp://hdl.handle.net/20.500.11754/44139
- ISSN
- 0032-3861; 1873-2291
- DOI
- 10.1016/j.polymer.2013.09.030
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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