Abstract
Sulfonated poly(arylene ether sulfone) (SPAES-F series) membranes, which are partially fluorinated multiblock polymers containing Bisphenol 6F (6F-BPA), are synthesized. The membranes exhibit less water uptake and higher ion conductivity at similar ion exchange capacity (IEC) values compared to previous SPAES membranes containing identical hydrophilic blocks. This is attributed to the presence of 6F-BPA in the hydrophobic block, which enhances hydrophobicity and promotes phase separation, as observed through transmission electron microscopy analysis. F4 (IEC = 2.4 meq g−1) shows superior ion conductivity than Nafion NRE212 membrane irrespective of the humidity level. Furthermore, the SPAES electrolyte membrane of 1.5 meq g−1 produces better performance than NRE212, yielding a current density of 488 mA cm−2 at 80 °C, 80% RH, and 0.6 V. In 50% RH at 80 °C, SPAES with 1.5 meq g−1 exhibits a cell resistance and fuel cell performance comparable to those of NRE212; clearly, regulating hydrophobicity and hydrophilicity is crucial for enhanced performance.
| Original language | English |
|---|---|
| Article number | 1700650 |
| Journal | Macromolecular Materials and Engineering |
| Volume | 303 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2018 May 1 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
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Partially Fluorinated Multiblock Poly(arylene ether sulfone) Membranes for Fuel Cell Applications. / Lee, Sojeong; Yuk, Jinok; Nugraha, Adam F.; Shul, Yong-Gun; Park, Seok Hee; Shin, Dongwon; Bae, Byungchan.
In: Macromolecular Materials and Engineering, Vol. 303, No. 5, 1700650, 01.05.2018.Research output: Contribution to journal › Article
TY - JOUR
T1 - Partially Fluorinated Multiblock Poly(arylene ether sulfone) Membranes for Fuel Cell Applications
AU - Lee, Sojeong
AU - Yuk, Jinok
AU - Nugraha, Adam F.
AU - Shul, Yong-Gun
AU - Park, Seok Hee
AU - Shin, Dongwon
AU - Bae, Byungchan
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Sulfonated poly(arylene ether sulfone) (SPAES-F series) membranes, which are partially fluorinated multiblock polymers containing Bisphenol 6F (6F-BPA), are synthesized. The membranes exhibit less water uptake and higher ion conductivity at similar ion exchange capacity (IEC) values compared to previous SPAES membranes containing identical hydrophilic blocks. This is attributed to the presence of 6F-BPA in the hydrophobic block, which enhances hydrophobicity and promotes phase separation, as observed through transmission electron microscopy analysis. F4 (IEC = 2.4 meq g−1) shows superior ion conductivity than Nafion NRE212 membrane irrespective of the humidity level. Furthermore, the SPAES electrolyte membrane of 1.5 meq g−1 produces better performance than NRE212, yielding a current density of 488 mA cm−2 at 80 °C, 80% RH, and 0.6 V. In 50% RH at 80 °C, SPAES with 1.5 meq g−1 exhibits a cell resistance and fuel cell performance comparable to those of NRE212; clearly, regulating hydrophobicity and hydrophilicity is crucial for enhanced performance.
AB - Sulfonated poly(arylene ether sulfone) (SPAES-F series) membranes, which are partially fluorinated multiblock polymers containing Bisphenol 6F (6F-BPA), are synthesized. The membranes exhibit less water uptake and higher ion conductivity at similar ion exchange capacity (IEC) values compared to previous SPAES membranes containing identical hydrophilic blocks. This is attributed to the presence of 6F-BPA in the hydrophobic block, which enhances hydrophobicity and promotes phase separation, as observed through transmission electron microscopy analysis. F4 (IEC = 2.4 meq g−1) shows superior ion conductivity than Nafion NRE212 membrane irrespective of the humidity level. Furthermore, the SPAES electrolyte membrane of 1.5 meq g−1 produces better performance than NRE212, yielding a current density of 488 mA cm−2 at 80 °C, 80% RH, and 0.6 V. In 50% RH at 80 °C, SPAES with 1.5 meq g−1 exhibits a cell resistance and fuel cell performance comparable to those of NRE212; clearly, regulating hydrophobicity and hydrophilicity is crucial for enhanced performance.
UR - http://www.scopus.com/inward/record.url?scp=85046901447&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046901447&partnerID=8YFLogxK
U2 - 10.1002/mame.201700650
DO - 10.1002/mame.201700650
M3 - Article
AN - SCOPUS:85046901447
VL - 303
JO - Macromolecular Materials and Engineering
JF - Macromolecular Materials and Engineering
SN - 1438-7492
IS - 5
M1 - 1700650
ER -