Abstract
An attempt was made to modify membranes for direct methanol fuel cells by blending Nafion or polystyrene sulfonic acid (PSSA) with polyvinylidene fluoride (PVDF) from their solutions. The proton conductivity and methanol barrier property as a function of the membrane compositions are discussed. Compared with the Nafion 117 membrane, the PVDF_Nafion blend membranes with 25 wt% of Nafion showed a decrease in the conductivity by about 2 orders of magnitude, and the methanol barrier properties increased about 3 orders of magnitude. If the ratio (σ/P) is adopted to characterize the performance of the membrane, the PVDF_PSSA and PVDF_Nafiion blend membranes are 16 and 40 times better than Nafion 117 membrane.
Keywords
Direct methanol fuel cells, Polymer electrolyte membrane, Blend, Proton conductivity, Methanol permeability
Publication Date
2002-05-28
Online Available Date
2002-05-28
Revised Date
2002-05-28
Received Date
2002-05-28
Recommended Citation
Lei LI, Jun ZHANG, Hong WU, Yu-xin WANG.
A Blend Conducting Membranes for Direct Methanol Fuel Cells[J]. Journal of Electrochemistry,
2002
,
8(2): 177-181.
DOI: 10.61558/2993-074X.1455
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol8/iss2/7
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