Pinholes in the membrane electrode assembly (MEA) of a fuel cell can lead to premature fuel cell failure. The main causes for pinhole formation are contaminant particles, non-uniform stress distribution, and membrane corrosion. In this paper fuel cell performance is compared before and after piercin
Effect of nonuniformity of the contact pressure distribution on the electrical contact resistance in proton exchange membrane fuel cells
β Scribed by P. Zhou; P. Lin; C.W. Wu; Z. Li
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 492 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0360-3199
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract This study focuses on the performances of proton exchange membrane fuel cells (PEMFCs) at 80 and 90βΒ°C with feeds of varying degrees of humidification. The results show that ohmic resistance of the solid electrolyte decreases as the current density is raised because of the back diffusio
An experimental work has been performed in order to study the pressure drop in air-forced open-cathode PEMFC architectures. Measurements have been obtained in an experimental setup specifically designed for the present research. Three different cathode configurations with aspects ratios Γ°w c =h c Γ
The effect of chloride as an air impurity and as a catalyst contaminant on the performance and durability of polybenzimidazole (PBI)-based high temperature proton exchange membrane fuel cell (HT-PEMFC) was studied. The ion chromatographic analysis reveals the existence of chloride contaminations in
Sulfonation of PEEK-WC powder (a glassy poly-ether ether ketone) has been performed at 80 β’ C for 3 h using H 2 SO 4 conc. (96%). The degree of sulfonation varied from 15 to 40%, depending on the reaction time. The sulfonated polymers (S-PEEK-WC) were used to prepare dense membranes for possible fue
Gas diffusion layer (GDL) is a porous medium placed between the flow field and the catalyst layer in a proton exchange membrane fuel cell (PEMFC), and experiences electrochemical aging and mechanical stresses during usage. In the present work carbon cloth and carbon paper, two commonly used GDLs in