| 20080308420 | Proton Conductive Material, Process for Producing the Same, Hydrogen Concentration Cell, Hydrogen Sensor and Fuel Cell - This provides a proton conductive material capable of operating from a low temperature range to a middle temperature range and being produced easily at low cost and a process for producing the same. This also provides a hydrogen concentration cell, a hydrogen sensor and a fuel cell equipped with the proton conductive material. The proton conductive material contains the element of calcium, the element of sulfur and the element of hydrogen, respectively, and having a proton conductivity of not less than 10 | 12-18-2008 |
