Transient phenomenon of step switching for current or voltage in PEMFC

Chun Ying Hsu; Fang Bor Weng; Ay Su; Chao-yang Wang; Irfan Saif Hussaini; Teng Lang Feng

doi:10.1016/j.renene.2008.12.024

Transient phenomenon of step switching for current or voltage in PEMFC

Chun Ying Hsu, Fang Bor Weng, Ay Su, Chao-yang Wang, Irfan Saif Hussaini, Teng Lang Feng

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26 Scopus citations

Abstract

The transient phenomenon of fuel cell with 5 cm² active area is investigated in this study by current density step increase and switching voltage under different conditions. It is found that there is an undershoot when the current density step increase is at the loading of 60% RH anode cathode, 3 stoic., 70 °C, 15 psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0 A/cm² due to the H⁺ transport in membrane or H₂/O₂ in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H₂ is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components.

Original language	English (US)
Pages (from-to)	1979-1985
Number of pages	7
Journal	Renewable Energy
Volume	34
Issue number	8
DOIs	https://doi.org/10.1016/j.renene.2008.12.024
State	Published - Aug 2009

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment

UN SDGs

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10.1016/j.renene.2008.12.024

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title = "Transient phenomenon of step switching for current or voltage in PEMFC",

abstract = "The transient phenomenon of fuel cell with 5 cm2 active area is investigated in this study by current density step increase and switching voltage under different conditions. It is found that there is an undershoot when the current density step increase is at the loading of 60% RH anode cathode, 3 stoic., 70 °C, 15 psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0 A/cm2 due to the H+ transport in membrane or H2/O2 in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H2 is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components.",

author = "Hsu, {Chun Ying} and Weng, {Fang Bor} and Ay Su and Chao-yang Wang and Hussaini, {Irfan Saif} and Feng, {Teng Lang}",

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T1 - Transient phenomenon of step switching for current or voltage in PEMFC

AU - Hsu, Chun Ying

AU - Weng, Fang Bor

AU - Su, Ay

AU - Wang, Chao-yang

AU - Hussaini, Irfan Saif

AU - Feng, Teng Lang

PY - 2009/8

Y1 - 2009/8

N2 - The transient phenomenon of fuel cell with 5 cm2 active area is investigated in this study by current density step increase and switching voltage under different conditions. It is found that there is an undershoot when the current density step increase is at the loading of 60% RH anode cathode, 3 stoic., 70 °C, 15 psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0 A/cm2 due to the H+ transport in membrane or H2/O2 in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H2 is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components.

AB - The transient phenomenon of fuel cell with 5 cm2 active area is investigated in this study by current density step increase and switching voltage under different conditions. It is found that there is an undershoot when the current density step increase is at the loading of 60% RH anode cathode, 3 stoic., 70 °C, 15 psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0 A/cm2 due to the H+ transport in membrane or H2/O2 in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H2 is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components.

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JO - Renewable Energy

JF - Renewable Energy

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Transient phenomenon of step switching for current or voltage in PEMFC

Abstract

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