Large-scale current fluctuations in PEM fuel cells operating with reduced feed stream humidification

J. R. Atkins; S. C. Savett; S. E. Creager

doi:10.1016/j.jpowsour.2003.09.067

Large-scale current fluctuations in PEM fuel cells operating with reduced feed stream humidification

J. R. Atkins, S. C. Savett, S. E. Creager

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

Abstract

The effects of systematic dehydration of the fuel and oxidant feed streams on the performance of a proton exchange membrane (PEM) membrane electrode assembly (MEA) were investigated in an attempt to understand the effects of feed stream humidification on cell operation. A significant but expected performance loss was observed when the feed stream humidification was diminished. In addition, strong periodic fluctuations in current and cell resistance were also observed as the feed stream humidification was decreased. A cyclic mechanism is proposed that may offer a qualitative explanation for these unusual fluctuations.

Original language	English (US)
Pages (from-to)	201-207
Number of pages	7
Journal	Journal of Power Sources
Volume	128
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2003.09.067
State	Published - Apr 5 2004
Externally published	Yes

Keywords

Humidification
Membrane electrode assembly
Proton exchange membrane

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Online availability

10.1016/j.jpowsour.2003.09.067

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title = "Large-scale current fluctuations in PEM fuel cells operating with reduced feed stream humidification",

abstract = "The effects of systematic dehydration of the fuel and oxidant feed streams on the performance of a proton exchange membrane (PEM) membrane electrode assembly (MEA) were investigated in an attempt to understand the effects of feed stream humidification on cell operation. A significant but expected performance loss was observed when the feed stream humidification was diminished. In addition, strong periodic fluctuations in current and cell resistance were also observed as the feed stream humidification was decreased. A cyclic mechanism is proposed that may offer a qualitative explanation for these unusual fluctuations.",

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note = "Funding Information: Financial support of this work is by the U.S. Department of Energy and the State of South Carolina under the DOE-EPSCoR program is gratefully acknowledged. ",

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AU - Atkins, J. R.

AU - Savett, S. C.

AU - Creager, S. E.

N1 - Funding Information: Financial support of this work is by the U.S. Department of Energy and the State of South Carolina under the DOE-EPSCoR program is gratefully acknowledged.

PY - 2004/4/5

Y1 - 2004/4/5

N2 - The effects of systematic dehydration of the fuel and oxidant feed streams on the performance of a proton exchange membrane (PEM) membrane electrode assembly (MEA) were investigated in an attempt to understand the effects of feed stream humidification on cell operation. A significant but expected performance loss was observed when the feed stream humidification was diminished. In addition, strong periodic fluctuations in current and cell resistance were also observed as the feed stream humidification was decreased. A cyclic mechanism is proposed that may offer a qualitative explanation for these unusual fluctuations.

AB - The effects of systematic dehydration of the fuel and oxidant feed streams on the performance of a proton exchange membrane (PEM) membrane electrode assembly (MEA) were investigated in an attempt to understand the effects of feed stream humidification on cell operation. A significant but expected performance loss was observed when the feed stream humidification was diminished. In addition, strong periodic fluctuations in current and cell resistance were also observed as the feed stream humidification was decreased. A cyclic mechanism is proposed that may offer a qualitative explanation for these unusual fluctuations.

KW - Humidification

KW - Membrane electrode assembly

KW - Proton exchange membrane

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Large-scale current fluctuations in PEM fuel cells operating with reduced feed stream humidification

Abstract

Keywords

ASJC Scopus subject areas

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