hydrogen production from water using solar cells powered nafion ...

Figure 3.5. Single Cell Electrolysis Setup
Effects of the temperature and the flow rate on voltage-current density
characteristics of the electrolysis cells were studied. Current given to the electrolyzer was
increased with respect to time in each set. Potential difference between the electrodes,
hydrogen and oxygen flow rates and water permeation through membrane, were recorded
using voltmeter and digital soap bubble flow meters.
3.2.3 PEM Electrolysis Stack
The design is analogous to the single cell electrolyzer. In fact, first and last graphite
plates, end plates, silicon gaskets, gas diffusion layers of the stack were identical with the
plates used in single cell electrolyzer, though connecting two cells in serial requires an
electrical conduction between the cathode and adjacent cells anode. Thus, the only
difference from single cell electrolyzer is that two sided plates are used to achieve the
conduction between cells. Both sides of these plates were machined to place anode and
cathode GDL and appropriate ducts were drilled on plates to collect the product gases and
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