Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method

Sang Yeop Lee; Sang Uk Kim; Hyoung Juhn Kim; Jong Hyun Jang; In Hwan Oh; Eun Ae Cho; Seong Ahn Hong; Jaejun Ko; Tae Won Lim; Kwan Young Lee; Tae Hoon Lim

doi:10.1016/j.jpowsour.2008.01.009

Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method

Sang Yeop Lee, Sang Uk Kim, Hyoung Juhn Kim, Jong Hyun Jang, In Hwan Oh, Eun Ae Cho, Seong Ahn Hong, Jaejun Ko, Tae Won Lim, Kwan Young Lee, Tae Hoon Lim

Department of Chemical and Biological Engineering

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

45 Citations (Scopus)

Abstract

Water removal from proton exchange membrane fuel cells (PEMFC) is of great importance to improve start-up ability and mitigate cell degradation when the fuel cell operates at subfreezing temperatures. In this study, we report water removal characteristics under various shut down conditions including a dry gas-purging step. In order to estimate the dehydration level of the electrolyte membrane, the high frequency resistance of the fuel cell stack was observed. Also, a novel method for measuring the amount of residual water in the fuel cell was developed to determine the amount of water removal. The method used the phase change of liquid water and was successfully applied to examine the water removal characteristics. Based on these works, the effects of several parameters such as purging time, flow rate of purging gas, operation current, and stack temperature on the amount of residual water were investigated.

Original language	English
Pages (from-to)	784-790
Number of pages	7
Journal	Journal of Power Sources
Volume	180
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2008.01.009
Publication status	Published - 2008 Jun 1

Keywords

Cold start-up
Dry gas purging
Freeze-thaw cycles
Proton exchange membrane fuel cell (PEMFC)

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2008.01.009

Cite this

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title = "Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method",

abstract = "Water removal from proton exchange membrane fuel cells (PEMFC) is of great importance to improve start-up ability and mitigate cell degradation when the fuel cell operates at subfreezing temperatures. In this study, we report water removal characteristics under various shut down conditions including a dry gas-purging step. In order to estimate the dehydration level of the electrolyte membrane, the high frequency resistance of the fuel cell stack was observed. Also, a novel method for measuring the amount of residual water in the fuel cell was developed to determine the amount of water removal. The method used the phase change of liquid water and was successfully applied to examine the water removal characteristics. Based on these works, the effects of several parameters such as purging time, flow rate of purging gas, operation current, and stack temperature on the amount of residual water were investigated.",

keywords = "Cold start-up, Dry gas purging, Freeze-thaw cycles, Proton exchange membrane fuel cell (PEMFC)",

author = "Lee, {Sang Yeop} and Kim, {Sang Uk} and Kim, {Hyoung Juhn} and Jang, {Jong Hyun} and Oh, {In Hwan} and Cho, {Eun Ae} and Hong, {Seong Ahn} and Jaejun Ko and Lim, {Tae Won} and Lee, {Kwan Young} and Lim, {Tae Hoon}",

note = "Funding Information: This work was supported by the New and Renewable Energy R&D Program and National RD&D Organization for Hydrogen and Fuel Cell under the Korea Ministry of Commerce, Industry, and Energy as a part of the development of 200 kW class PEMFC system for bus (2005-N-F12-P-01). Dr. J.H. Jang, was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00036) while he was at University of Newcastle upon Tyne.",

year = "2008",

month = jun,

day = "1",

doi = "10.1016/j.jpowsour.2008.01.009",

language = "English",

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pages = "784--790",

journal = "Journal of Power Sources",

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T1 - Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method

AU - Lee, Sang Yeop

AU - Kim, Sang Uk

AU - Kim, Hyoung Juhn

AU - Jang, Jong Hyun

AU - Oh, In Hwan

AU - Cho, Eun Ae

AU - Hong, Seong Ahn

AU - Ko, Jaejun

AU - Lim, Tae Won

AU - Lee, Kwan Young

AU - Lim, Tae Hoon

N1 - Funding Information: This work was supported by the New and Renewable Energy R&D Program and National RD&D Organization for Hydrogen and Fuel Cell under the Korea Ministry of Commerce, Industry, and Energy as a part of the development of 200 kW class PEMFC system for bus (2005-N-F12-P-01). Dr. J.H. Jang, was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2006-214-D00036) while he was at University of Newcastle upon Tyne.

PY - 2008/6/1

Y1 - 2008/6/1

N2 - Water removal from proton exchange membrane fuel cells (PEMFC) is of great importance to improve start-up ability and mitigate cell degradation when the fuel cell operates at subfreezing temperatures. In this study, we report water removal characteristics under various shut down conditions including a dry gas-purging step. In order to estimate the dehydration level of the electrolyte membrane, the high frequency resistance of the fuel cell stack was observed. Also, a novel method for measuring the amount of residual water in the fuel cell was developed to determine the amount of water removal. The method used the phase change of liquid water and was successfully applied to examine the water removal characteristics. Based on these works, the effects of several parameters such as purging time, flow rate of purging gas, operation current, and stack temperature on the amount of residual water were investigated.

AB - Water removal from proton exchange membrane fuel cells (PEMFC) is of great importance to improve start-up ability and mitigate cell degradation when the fuel cell operates at subfreezing temperatures. In this study, we report water removal characteristics under various shut down conditions including a dry gas-purging step. In order to estimate the dehydration level of the electrolyte membrane, the high frequency resistance of the fuel cell stack was observed. Also, a novel method for measuring the amount of residual water in the fuel cell was developed to determine the amount of water removal. The method used the phase change of liquid water and was successfully applied to examine the water removal characteristics. Based on these works, the effects of several parameters such as purging time, flow rate of purging gas, operation current, and stack temperature on the amount of residual water were investigated.

KW - Cold start-up

KW - Dry gas purging

KW - Freeze-thaw cycles

KW - Proton exchange membrane fuel cell (PEMFC)

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VL - 180

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ER -

Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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