Water transport through Nafion 112 membrane in DMFCs

G. Q. Lu; F. Q. Liu; Chao Yang Wang

doi:10.1149/1.1825312

Water transport through Nafion 112 membrane in DMFCs

G. Q. Lu, F. Q. Liu, Chao Yang Wang

Research output: Contribution to journal › Article › peer-review

126 Scopus citations

Abstract

Water management has emerged as a significant challenge in portable direct methanol fuel cells, DMFCs. Excessive water crossover through the membrane causes water loss in the anode and flooding in the cathode. We report a novel DMFC design based on Nation 112 and a cathode gas-diffusion layer coated with a microporous layer. This DMFC operated with ambient air yielded a stable power density of 56 mW/cm² at 60°C, while the net water transport coefficient was only 0.64 compared to a typical value of 3 for Nafion 117 membranes. In addition, the fuel efficiency was about 74-92%.

Original language	English (US)
Pages (from-to)	A1-A4
Journal	Electrochemical and Solid-State Letters
Volume	8
Issue number	1
DOIs	https://doi.org/10.1149/1.1825312
State	Published - 2005

All Science Journal Classification (ASJC) codes

General Chemical Engineering
General Materials Science
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1149/1.1825312

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abstract = "Water management has emerged as a significant challenge in portable direct methanol fuel cells, DMFCs. Excessive water crossover through the membrane causes water loss in the anode and flooding in the cathode. We report a novel DMFC design based on Nation 112 and a cathode gas-diffusion layer coated with a microporous layer. This DMFC operated with ambient air yielded a stable power density of 56 mW/cm2 at 60°C, while the net water transport coefficient was only 0.64 compared to a typical value of 3 for Nafion 117 membranes. In addition, the fuel efficiency was about 74-92%.",

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AB - Water management has emerged as a significant challenge in portable direct methanol fuel cells, DMFCs. Excessive water crossover through the membrane causes water loss in the anode and flooding in the cathode. We report a novel DMFC design based on Nation 112 and a cathode gas-diffusion layer coated with a microporous layer. This DMFC operated with ambient air yielded a stable power density of 56 mW/cm2 at 60°C, while the net water transport coefficient was only 0.64 compared to a typical value of 3 for Nafion 117 membranes. In addition, the fuel efficiency was about 74-92%.

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Water transport through Nafion 112 membrane in DMFCs

Abstract

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