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Removal of Flooding in a PEM Fuel Cell at Cathode by Flexural Wave  

Kim, Kyoung-Rock (Grad. School of Korea Univ.)
Han, Seong-Ho (Grad. School of Korea Univ.)
Ahn, Deuk-Kuen (Grad. School of Korea Univ.)
Choi, Young-Don (School of Mechanical Engineering, Korea Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.21, no.1, 2010 , pp. 35-41 More about this Journal
Abstract
Water management is an important issue of PEM fuel cell operation. Water is the product of the electrochemical reactions inside fuel cell. If liquid water accumulation becomes excessive in a fuel cell, water columns will clog the gas flow channel. This condition is referred to as flooding. A number of researchers have examined the water removal methods in order to improve the performance. In this paper, a new water removal method that investigates the use of vibro-acoutic methods is presented. Piezo-actuators which are devices to generate the flexural wave are attached at the end of a cathode bipolar plate. Flexural wave is used to impart energy to resting droplets and thus cause movement of the droplets in the direction of the traveling wave.
Keywords
PEMFC; Cathode; Flooding; Stoichiometry; Flexural wave; RH; CD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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