Novel Approach to Recycling Water and Reducing Water Loss in DMFCs

E. Peled; A. Blum; A. Aharon; M. Philosoph; Y. Lavi

doi:10.1149/1.1621611

Novel Approach to Recycling Water and Reducing Water Loss in DMFCs

E. Peled, A. Blum, A. Aharon, M. Philosoph, Y. Lavi

Tel Aviv University

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

66 Scopus citations

Abstract

Water loss and water recycling in direct methanol fuel cells (DMFCs) is a major issue. As a result of electro-osmotic drag, water accumulates at the cathode and hydraulic pressure builds up. The rate of water permeation under hydraulic pressure was measured for several nanoporous proton-conducting membranes (NP-PCMs) and for Nafion 117. Water-permeation rate in NP-PCM is up to 18 times that in Nafion 117. With the use of a liquid-water barrier layer, water loss can be minimized and this can lead to water-neutral operation conditions. In such a case the weight, volume, and complexity of the DMFC system would be reduced.

Original language	English
Pages (from-to)	A268-A271
Journal	Electrochemical and Solid-State Letters
Volume	6
Issue number	12
DOIs	https://doi.org/10.1149/1.1621611
State	Published - Dec 2003
Externally published	Yes

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AB - Water loss and water recycling in direct methanol fuel cells (DMFCs) is a major issue. As a result of electro-osmotic drag, water accumulates at the cathode and hydraulic pressure builds up. The rate of water permeation under hydraulic pressure was measured for several nanoporous proton-conducting membranes (NP-PCMs) and for Nafion 117. Water-permeation rate in NP-PCM is up to 18 times that in Nafion 117. With the use of a liquid-water barrier layer, water loss can be minimized and this can lead to water-neutral operation conditions. In such a case the weight, volume, and complexity of the DMFC system would be reduced.

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Novel Approach to Recycling Water and Reducing Water Loss in DMFCs

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