Effects of clamping force on the water transport and performance of a PEM (proton electrolyte membrane) fuel cell with relative humidity and current density

Dowon Cha; Jae Hwan Ahn; Hyung Soon Kim; Yongchan Kim

doi:10.1016/j.energy.2015.10.045

Effects of clamping force on the water transport and performance of a PEM (proton electrolyte membrane) fuel cell with relative humidity and current density

Dowon Cha, Jae Hwan Ahn, Hyung Soon Kim, Yongchan Kim

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

42 Citations (Scopus)

Abstract

The clamping force should be applied to a proton electrolyte membrane (PEM) fuel cell due to its structural characteristics. The clamping force affects the ohmic and mass transport resistances in the PEM fuel cell. In this study, the effects of the clamping force on the water transport and performance characteristics of a PEM fuel cell are experimentally investigated with variations in the relative humidity and current density. The water transport characteristics were analyzed by calculating the net drag coefficient. The ohmic resistance decreased with the increase in the clamping force due to the reduced contact resistance and more even membrane hydration. However, the mass transport resistance increased with the increase in the clamping force due to the gas diffusion layer compression. The net drag coefficient decreased with the increase in the clamping force due to high water back-diffusion. Additionally, the relationship between the total resistance and the net drag coefficient was investigated.

Original language	English
Pages (from-to)	1338-1344
Number of pages	7
Journal	Energy
Volume	93
DOIs	https://doi.org/10.1016/j.energy.2015.10.045
Publication status	Published - 2015

Bibliographical note

Funding Information:
This work was jointly supported by the National Research Foundation of Korea (NRF) with a grant (No. 2013068888 ) funded by the Korean Government (MSIP) and the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) with a grant (No. 20144010200770 ) provided with financial resources from the Ministry of Trade, Industry & Energy of the Republic of Korea .

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

Clamping force
Proton electrolyte membrane fuel cell
Water transport

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Pollution
Mechanical Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1016/j.energy.2015.10.045

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title = "Effects of clamping force on the water transport and performance of a PEM (proton electrolyte membrane) fuel cell with relative humidity and current density",

abstract = "The clamping force should be applied to a proton electrolyte membrane (PEM) fuel cell due to its structural characteristics. The clamping force affects the ohmic and mass transport resistances in the PEM fuel cell. In this study, the effects of the clamping force on the water transport and performance characteristics of a PEM fuel cell are experimentally investigated with variations in the relative humidity and current density. The water transport characteristics were analyzed by calculating the net drag coefficient. The ohmic resistance decreased with the increase in the clamping force due to the reduced contact resistance and more even membrane hydration. However, the mass transport resistance increased with the increase in the clamping force due to the gas diffusion layer compression. The net drag coefficient decreased with the increase in the clamping force due to high water back-diffusion. Additionally, the relationship between the total resistance and the net drag coefficient was investigated.",

keywords = "Clamping force, Proton electrolyte membrane fuel cell, Water transport",

author = "Dowon Cha and Ahn, {Jae Hwan} and Kim, {Hyung Soon} and Yongchan Kim",

note = "Funding Information: This work was jointly supported by the National Research Foundation of Korea (NRF) with a grant (No. 2013068888 ) funded by the Korean Government (MSIP) and the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) with a grant (No. 20144010200770 ) provided with financial resources from the Ministry of Trade, Industry & Energy of the Republic of Korea . Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.energy.2015.10.045",

language = "English",

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AU - Cha, Dowon

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AU - Kim, Hyung Soon

AU - Kim, Yongchan

N1 - Funding Information: This work was jointly supported by the National Research Foundation of Korea (NRF) with a grant (No. 2013068888 ) funded by the Korean Government (MSIP) and the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) with a grant (No. 20144010200770 ) provided with financial resources from the Ministry of Trade, Industry & Energy of the Republic of Korea . Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2015

Y1 - 2015

N2 - The clamping force should be applied to a proton electrolyte membrane (PEM) fuel cell due to its structural characteristics. The clamping force affects the ohmic and mass transport resistances in the PEM fuel cell. In this study, the effects of the clamping force on the water transport and performance characteristics of a PEM fuel cell are experimentally investigated with variations in the relative humidity and current density. The water transport characteristics were analyzed by calculating the net drag coefficient. The ohmic resistance decreased with the increase in the clamping force due to the reduced contact resistance and more even membrane hydration. However, the mass transport resistance increased with the increase in the clamping force due to the gas diffusion layer compression. The net drag coefficient decreased with the increase in the clamping force due to high water back-diffusion. Additionally, the relationship between the total resistance and the net drag coefficient was investigated.

AB - The clamping force should be applied to a proton electrolyte membrane (PEM) fuel cell due to its structural characteristics. The clamping force affects the ohmic and mass transport resistances in the PEM fuel cell. In this study, the effects of the clamping force on the water transport and performance characteristics of a PEM fuel cell are experimentally investigated with variations in the relative humidity and current density. The water transport characteristics were analyzed by calculating the net drag coefficient. The ohmic resistance decreased with the increase in the clamping force due to the reduced contact resistance and more even membrane hydration. However, the mass transport resistance increased with the increase in the clamping force due to the gas diffusion layer compression. The net drag coefficient decreased with the increase in the clamping force due to high water back-diffusion. Additionally, the relationship between the total resistance and the net drag coefficient was investigated.

KW - Clamping force

KW - Proton electrolyte membrane fuel cell

KW - Water transport

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Effects of clamping force on the water transport and performance of a PEM (proton electrolyte membrane) fuel cell with relative humidity and current density

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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