Transport in PEMFC Stacks - DOE Hydrogen and Fuel Cells ...

Achievements: New Membranes: HQS100-6FPAEB
BPSH100*
O
O
H O 3 S
O
S
O
Chemical Formula: C 24 H 16 O 10 S 3
••
Molecular Weight: 560.57
IEC = 3.57 meq/g
SO 3 H
*BiPhenol Sulfone, 100% sulfonated H + form
n
HQSH100*
O
IEC = 4.13 meq/g
O
H O 3 S
O
S
O
SO 3 H
Chemical Formula: C 18 H 12 O 10 S 3
••
Molecular Weight: 484.48
*Hydroquinone Sulfone, 100% sulfonated H + form
n
SQSH*
O
SO 3
H
O
H O 3 S
O
S
O
SO 3
H
Chemical Formula: C 18 H 12 O 13 S 4
••
Molecular Weight: 564.54
IEC = 5.31 meq/g
*Sulfonated Quinone-Sulfone, H + form
n
• Provide design guidelines for PEMs on impact of structure and segregation of charges
• Giner to use polymer powders to determine fundamental properties, generate MEAs
• USC to use model to predict performance based on fundamental properties
Proton conductivity@80 o C [Scm -1 ]
10 0
10 -1
(4)
(3)
10 -2
10 -3
10 -4
(2)
(1)
(1) Nafion 212
(2) 6FPAEB-BPSH 9k-9k
(3) 6FPAEB-HQSH 6k-6k
(4) 6FPAEB-HQSH 9k-9k
20 30 40 50 60 70 80 90 100
Relative humidity [%]
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or otherwise restricted information
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