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

被引：39

作者：

Cha, Dowon ^{[1
]}

Ahn, Jae Hwan ^{[2
]}

Kim, Hyung Soon ^{[1
]}

Kim, Yongchan ^{[1
]}

机构：

[1] Korea Univ, Sch Mech Engn, Seoul 136701, South Korea

[2] Korea Food Res Inst, Res Grp Smart Food Distribut Syst, Songnam 463746, Gyeonggi, South Korea

来源：

ENERGY | 2015年 / 93卷

基金：

新加坡国家研究基金会;

关键词：

Proton electrolyte membrane fuel cell; Clamping force; Water transport; GAS-DIFFUSION LAYER; COMPRESSION; MODEL;

D O I：

10.1016/j.energy.2015.10.045

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1338 / 1344

页数：7

共 28 条

[1] Effect of GDL permeability on water and thermal management in PEMFCs - II. Clamping force [J].