Mesostructured-aluminosilicate-Nafion hybrid membranes for direct methanol fuel cells
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Mesostructured-aluminosilicate-Nafion hybrid membranes for direct methanol fuel cells
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| Creator |
Meenaksh, S.
Sahu, A.K. Bhat, S.D. Sridhar, P. Pitchumani, S. Shukla, A.K. |
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| Subject |
Fuel Cells
Electrochemical Power Sources |
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| Description |
Organic–inorganic hybrid membranes are prepared from Nafion and acid functionalized aluminosilicate
with varying structures and surface areas. Acid-functionalized mesostructured aluminosilicate with cellular
foam framework (Al-MSU-F type) of surface area 463 m2 g−1, acid-functionalized aluminosilicate
molecular sieves (Al-HMS type) of surface area 651 m2 g−1 and acid-functionalized mesostructured aluminosilicate
with hexagonal network (Al-MCM-41 type) of surface area 799 m2 g−1 have been employed
as potential filler materials to form hybrid membranes with Nafion. The structural behavior, water
uptake, ion-exchange capacity, proton conductivity and methanol permeability of the hybrid membranes
are extensively investigated. Direct methanol fuel cells (DMFCs) with Al-HMS-Nafion and Al-MCM-41-
Nafion hybrid membranes deliver respective peak power-densities of 170 mW cm−2 and 246 mW cm−2,
while a peak power-density of only 48 mW cm−2 is obtained for the DMFC employing pristine recast-
Nafion membrane under identical operating conditions. The unique properties associated with hybrid
membranes could be exclusively attributed to the presence of pendant sulfonic-acid groups in the filler
materials, which provide proton-conducting pathways between the filler and matrix in the hybrid membranes,
and facilitate proton transport with adequate balance between proton conductivity and methanol
permeability.
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| Publisher |
Elsevier
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| Date |
2013
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3029/1/016-2013.pdf
Meenaksh, S. and Sahu, A.K. and Bhat, S.D. and Sridhar, P. and Pitchumani, S. and Shukla, A.K. (2013) Mesostructured-aluminosilicate-Nafion hybrid membranes for direct methanol fuel cells. Electrochimica Acta, 89. pp. 35-44. ISSN 0013-4686 |
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| Relation |
http://www.elsevier.com/locate/electacta
http://cecri.csircentral.net/3029/ |
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