Transient phenomenon of step switching for current or voltage in PEMFC

被引：24

作者：

Hsu, Chun-Ying ^{[1
,2
]}

Weng, Fang-Bor ^{[1
,2
]}

Su, Ay ^{[1
,2
]}

Wang, Chao-Yang ^{[3
]}

Hussaini, Irfan Saif ^{[3
]}

Feng, Teng-Lang ^{[4
]}

机构：

[1] Yuan Ze Univ, Fuel Cell Ctr, Tao Yuan 320, Taiwan

[2] Yuan Ze Univ, Dept Mech Engn, Tao Yuan 320, Taiwan

[3] Penn State Univ, ECEC, Dept Mech & Nucl Engn, University Pk, PA 16802 USA

[4] Nanya Inst Technol, Tao Yuan 32091, Taiwan

来源：

RENEWABLE ENERGY | 2009年 / 34卷 / 08期

关键词：

Transient; Undershoot; Load cycle; Fuel cell; ELECTROLYTE FUEL-CELLS; DYNAMIC-BEHAVIOR; LOAD CHANGES; MODEL;

D O I：

10.1016/j.renene.2008.12.024

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

The transient phenomenon of fuel cell with 5 cm(2) 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 degrees C, 15 psi for automobile applications. The voltage is almost zero under 0.2 step increase to 1.0 A/cm(2) due to the H+ transport in membrane or H-2/O-2 in catalyst layer is almost used up. The undershoot phenomenon is more serious under gases stoichiometries of 3.0/3.0 when H-2 is fully humidified due to low gas concentration or flooding on the electrode. This phenomenon would induce the degradation of fuel cell components. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1979 / 1985

页数：7

共 8 条

[1]

The effect of stoichiometry on dynamic behavior of a proton exchange membrane fuel cell (PEMFC) during load change [J].