BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like elements are numbered alike in several Figures, in which:
FIG. 1 is a diagram schematically showing a TG chart for calculating water content;
FIG. 2 is a graph for showing time dependence of the water contents of Example 1 and Comparative Example 1 which were stored at 22° C. and 62% RH after acid doping, the water contents being determined by a particular water content evaluation method; and
FIG. 3 is a graph showing measurements of time dependence of open circuit voltage and cell resistance in a fuel electrode electrolyte according to Example 2 at 150° C. and in a nonhumidified state;
FIG. 4 is a graph showing the current-voltage characteristics of Example 2 and Comparative Example 2;
FIG. 5 is a graph showing the shrink characteristics obtained by TMA measurement on the fuel cell electrolytes of Example 1 and Example 3; and
FIG. 6 is a graph showing measurements of the time dependence of a cell voltage of a fuel cell using the fuel cell electrolyte of Example 1 and Example 4.