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Energies 2017, 10(2), 259; doi:10.3390/en10020259

A Nafion-Ceria Composite Membrane Electrolyte for Reduced Methanol Crossover in Direct Methanol Fuel Cells

1
CSIR—Central Electrochemical Research Institute-Madras Unit, CSIR Madras Complex, Taramani, Chennai 600113, India
2
Academy of Scientific and Innovative Research (AcSIR), CSIR—Central Electrochemical Research Institute, Karaikudi 630003, India
3
Mesha Energy Solutions Pvt. Ltd., Yeshwanthpur, Bengaluru 560022, India
*
Authors to whom correspondence should be addressed.
Academic Editor: Francesco Lufrano
Received: 7 January 2017 / Revised: 5 February 2017 / Accepted: 10 February 2017 / Published: 21 February 2017
(This article belongs to the Special Issue Direct Alcohol Fuel Cells)
View Full-Text   |   Download PDF [3072 KB, uploaded 21 February 2017]   |  

Abstract

An alternative Nafion composite membrane was prepared by incorporating various loadings of CeO2 nanoparticles into the Nafion matrix and evaluated its potential application in direct methanol fuel cells (DMFCs). The effects of CeO2 in the Nafion matrix were systematically studied in terms of surface morphology, thermal and mechanical stability, proton conductivity and methanol permeability. The composite membrane with optimum filler content (1 wt. % CeO2) exhibits a proton conductivity of 176 mS·cm−1 at 70 °C, which is about 30% higher than that of the unmodified membrane. Moreover, all the composite membranes possess a much lower methanol crossover compared to pristine Nafion membrane. In a single cell DMFC test, MEA fabricated with the optimized composite membrane delivered a peak power density of 120 mW·cm−2 at 70 °C, which is about two times higher in comparison with the pristine Nafion membrane under identical operating conditions. View Full-Text
Keywords: polymer electrolyte membrane; ceria; composite membranes; methanol crossover; direct methanol fuel cells polymer electrolyte membrane; ceria; composite membranes; methanol crossover; direct methanol fuel cells
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Velayutham, P.; Sahu, A.K.; Parthasarathy, S. A Nafion-Ceria Composite Membrane Electrolyte for Reduced Methanol Crossover in Direct Methanol Fuel Cells. Energies 2017, 10, 259.

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