| Download | - View accepted manuscript: Structural influence of hydrophobic diamine in sulfonated poly(sulfide sulfone imide) copolymers on medium temperature PEM fuel cell (PDF, 1.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.polymer.2013.09.030 |
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| Author | Search for: Lee, Kang Hyuck; Search for: Lee, So Young; Search for: Shin, Dong Won; Search for: Wang, Chenyi; Search for: Ahn, Sang-Hyun; Search for: Lee, Kee-Jung; Search for: Guiver, Michael D.1; Search for: Lee, Young Moo |
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| Affiliation | - National Research Council of Canada. Energy, Mining and Environment
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| Format | Text, Article |
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| Subject | Medium temperature PEMFC; Polymer electrolyte membrane; Sulfonated polyimide |
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| 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 °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 °C, 35% RH, 1.5 atm. |
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| Publication date | 2013-09-25 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRC-EME-53237 |
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| NPARC number | 21269692 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 9bd4f3f5-99e0-4418-ac42-b10f7778d98c |
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| Record created | 2013-12-13 |
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| Record modified | 2020-06-04 |
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