| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a proton conductive composition that can stably provide a proton conductive membrane having high proton conductivity even under an environment in which the temperature region covers a wide range from room temperatures to a temperature higher than 80°C, and the relative humidity (RH) is as low as 60% or lower, and to provide a proton conductive membrane made of the composition, and a fuel cell. <P>SOLUTION: The proton conductive composition is obtained by drying a solution that is obtained by adding zirconium phosphate represented by the general formula (1) (wherein n is an integer of 0, 1 or 2 or a positive value equal to or greater than 2 as a mean value) to a solution of a high-molecular compound having ion conductivity. The proton conductive membrane is made of the composition, and the fuel cell uses the proton conductive membrane. The proton conductive membrane exhibits high proton conductivity at high temperatures (80°C or higher) and low relative humidities (60% relative humidity (RH) or lower), and therefore the fuel cell using the same exhibits excellent power generation characteristics even under an environment of high temperatures (80°C or higher) and low relative humidities (60% relative humidity (RH) or lower). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
