| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an evaluation method and device capable of accurately and efficiently evaluating water migration at an interface of an electrolyte film/electrode. <P>SOLUTION: In the evaluation method of a membrane electrode assembly for a fuel cell, a water-producing electrode 2 containing catalyst having catalytic activity for reaction producing water from oxygen and hydrogen is provided on one face of an electrolyte membrane 1 while a hydrolysis electrode 3 containing catalyst having catalytic activity for decomposition reaction of water is provided on the other face, an electrolyte material and a conductive material together with the catalyst are made contained in at least either the water-producing electrode or the hydrolysis electrode, gas containing oxygen is supplied to the water-producing electrode as well as gas not containing ingredients more easily oxidized than water is supplied to the hydrolysis electrode, a voltage impressed between the water-producing electrode and the hydrolysis electrode is varied, an amount of physical change changing in accordance with voltage variation is measured, and water migration between the electrolyte membrane and the electrodes is evaluated by a magnitude of the amount of physical change. <P>COPYRIGHT: (C)2009,JPO&INPIT |
