Experimental study on transient response according to variation of rib height at fuel cell plate

Ki Hoon Nam; Sung Ho Yun; Sung Ho Han; Nam Hyeon Choi; Young Don Choi

doi:10.3795/KSME-B.2013.37.11.1009

Experimental study on transient response according to variation of rib height at fuel cell plate

Ki Hoon Nam, Sung Ho Yun, Sung Ho Han, Nam Hyeon Choi, Young Don Choi

Honorary professors

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

Abstract

In the present study, using a variation of rib height, the transient response and the performance are investigated. The cell voltage is acquired according to the current density change(0.8A/cm₂ to 1.0A/cm ₂) under same stoichiometry and relative humidity. The different level of undershoots appeared at the different clamping pressure(1.5MPa and 2.0MPa) and different rib height. At 1.5MPa clamping pressure, rib manufactured cut at 100μm height goes to steady state faster than reference plate and has lower maximum undershoot voltage. But performance is lower than reference plate due to increasing contact resistance.

Original language	English
Pages (from-to)	1009-1014
Number of pages	6
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	37
Issue number	11
DOIs	https://doi.org/10.3795/KSME-B.2013.37.11.1009
Publication status	Published - 2013 Nov

Keywords

Clamping Pressure
GDL
Transient Response
Variation of Rib

ASJC Scopus subject areas

Mechanical Engineering

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abstract = "In the present study, using a variation of rib height, the transient response and the performance are investigated. The cell voltage is acquired according to the current density change(0.8A/cm2 to 1.0A/cm 2) under same stoichiometry and relative humidity. The different level of undershoots appeared at the different clamping pressure(1.5MPa and 2.0MPa) and different rib height. At 1.5MPa clamping pressure, rib manufactured cut at 100μm height goes to steady state faster than reference plate and has lower maximum undershoot voltage. But performance is lower than reference plate due to increasing contact resistance.",

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T1 - Experimental study on transient response according to variation of rib height at fuel cell plate

AU - Nam, Ki Hoon

AU - Yun, Sung Ho

AU - Han, Sung Ho

AU - Choi, Nam Hyeon

AU - Choi, Young Don

PY - 2013/11

Y1 - 2013/11

N2 - In the present study, using a variation of rib height, the transient response and the performance are investigated. The cell voltage is acquired according to the current density change(0.8A/cm2 to 1.0A/cm 2) under same stoichiometry and relative humidity. The different level of undershoots appeared at the different clamping pressure(1.5MPa and 2.0MPa) and different rib height. At 1.5MPa clamping pressure, rib manufactured cut at 100μm height goes to steady state faster than reference plate and has lower maximum undershoot voltage. But performance is lower than reference plate due to increasing contact resistance.

AB - In the present study, using a variation of rib height, the transient response and the performance are investigated. The cell voltage is acquired according to the current density change(0.8A/cm2 to 1.0A/cm 2) under same stoichiometry and relative humidity. The different level of undershoots appeared at the different clamping pressure(1.5MPa and 2.0MPa) and different rib height. At 1.5MPa clamping pressure, rib manufactured cut at 100μm height goes to steady state faster than reference plate and has lower maximum undershoot voltage. But performance is lower than reference plate due to increasing contact resistance.

KW - Clamping Pressure

KW - GDL

KW - Transient Response

KW - Variation of Rib

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