A Novel Three-Electrode Solid Electrolyte Hydrogen Gas Sensor - Intelligent Computing for Sustainable Energy and Environment - page 43

0.6

0.55

0.5

0.45

0.4

0.35

0.3

0.25

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

n (%)

Fig. 3. The electromotive force of two-electrode solid electrolyte sensor as a function
of the hydrogen concentration

0.6

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

0 2 4 6 8 10 12

n (%)

Fig. 4. The electromotive force of Pt-W electrodes E 1 of the three-electrode solid
electrolyte sensor as a function of the hydrogen concentration

of Pt-W electrodes of the three-electrode solid electrolyte hydrogen sensor has
better resolution when the hydrogen concentration changes in a range of 0-12%,
and the dynamic range of the sensor output electromotive force can reach about
0.65V. Comparing Figure 4 with Figure 5, it is obvious that the electromotive
force of the three-electrode solid electrolyte hydrogen sensor, E 1 and E 2 present
different trends. Comparing Figure 3 to Figure 4, it is clear that the detecting
range of the three-electrode hydrogen sensor has been improved than that of the
two-electrode sensor.