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

Mechanical Engineering

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

28 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

UN SDGs

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

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment

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10.1016/j.renene.2008.12.024

Cite this

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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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U2 - 10.1016/j.renene.2008.12.024

DO - 10.1016/j.renene.2008.12.024

M3 - Article

AN - SCOPUS:64549145034

SN - 0960-1481

VL - 34

SP - 1979

EP - 1985

JO - Renewable Energy

JF - Renewable Energy

IS - 8

ER -

Transient phenomenon of step switching for current or voltage in PEMFC

Abstract

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