| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of testing a membrane electrode assembly in which reliability of a fuel cell ability test can be enhanced. <P>SOLUTION: When an MEA ability test is carried out, humidification condition of a supply gas is arranged at a low humidification condition of relative humidity ≤40%. In the fuel cell integrated with the MEA that is determined as a non-defective article through the ability test under this kind of low humidification condition, power generation capacity can be guaranteed in the low humidificatiion condition. At power generation operation of the fuel cell, the gas humidification condition in the MEA can become the gas humidification condition raised up to a desirable humidification extent for promoting a progress of an electrochemical reaction in an electrolyte, for example, the gas humidification condition of ≥40% of relative humidity. When the supply gas humidification condition is raised, gas diffusion resistance becomes lower, thereby the fuel cell exhibits high power generation ability. Accordingly, in the fuel cell integrated with the MEA determined as the non-defective article through the ability test under the low humidification condition, the power generation ability can be guaranteed even under the high humidification condition wherein the gas diffusion resistance becomes lower than that under the gas humidification condition of the relative humidity of ≤40%. <P>COPYRIGHT: (C)2011,JPO&INPIT |
