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Effect of Segmented Current Collection Contacts Attached to Gas Diffusion Layer in Micro PEM Fuel Cells with Ceramic Flow Field Plates

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Title Effect of Segmented Current Collection Contacts Attached to Gas Diffusion Layer in Micro PEM Fuel Cells with Ceramic Flow Field Plates
 
Creator RAMESH, P
DUTTAGUPTA, SP
 
Subject PEM Fuel cell
3-D modeling
segmented contacts
Gas Diffusion layer
Membrane Electrode Assembly
NUMERICAL-ANALYSIS
CHANNEL
PERFORMANCE
DESIGN
MODEL
RIB
 
Description Proton exchange membrane fuel cells (PEMFCs) are very promising for power stationary applications. One of the key components of fuel cells is the flow field plate through which hydrogen fuel will reach the anode and oxygen reach the cathode. Another function of the flow field plate is the electron collection. Traditionally flow field plates are made of graphite which makes them good for current collection. But graphite is costly and the alternative steel is heavy. Thus with development of MEMS technology it becomes important to have flow field plates made of silicon or ceramics. As silicon and ceramics are not good electrical conductors, electrical contacts have to be attached to the Gas Diffusion Layer (GDL) for taking the power to outside world. This is achieved by attaching contact pads to the GDL area which are not covered by flow plates. A reduction in the power output from the cell is observed with current collection from the GDL. Here we build a three dimensional model for a fuel cell in which current collection is carried out by segmented contacts attached to the GDL and the reasons for drop in performance is studied. Also the current collection contact is segmented in order to increase the power output from the cell
 
Publisher ESG
 
Date 2014-12-29T06:43:21Z
2014-12-29T06:43:21Z
2014
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 9(8)4331-4344
1452-3981
http://dspace.library.iitb.ac.in/jspui/handle/100/17338
 
Language English