Development of a Galvanostatic Analysis Technique as an In-situ Diagnostic Tool for PEMFC Single Cells and Stacks

Title
Development of a Galvanostatic Analysis Technique as an In-situ Diagnostic Tool for PEMFC Single Cells and Stacks
Authors
장종현이국승이병석유성종김수길김형준조은애헨켄스마이어디억남석우임태훈
Keywords
PEMFC; in-situ analysis; galvanostatic; electrochemistry
Issue Date
2012-11
Publisher
The 53rd Battery Symposium in Japan
Abstract
For the in-situ analysis of PEMFC single cells and stacks, new galvanostatic analysis technique was developed. From a developed relationship for galvanostatic data under nitrogen (cathodes) and hydrogen (anodes) atmosphere, the hydrogen crossover current and double-layer capacitance could be determined. Then, the electrochemical active surface area of platinum catalysts can be calculated. As the developed technique is also applicable for PEMFC stacks, as confirmed for a 5-cell PEMFC stack, the non-destructive analysis of PEMFC stacks will be available to provide degradation distribution of each cell, separating the effect from catalyst layers and polymer electrolyte membranes.
URI
http://pubs.kist.re.kr/handle/201004/44172
Appears in Collections:
KIST Publication > Conference Paper
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