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The hydrogen has been recognized as a clean, nonpolluting and unlimited energy source that can solve
fossil fuel depletion and environmental pollution problems at the same time. Water electrolysis has been
the most attractive technology in a way to produce hydrogen because it does not emit any pollutants compared
to other method such as natural gas steam reforming and coal gasification etc. In order to improve efficiency
and durability of the water electrolysis, comprehensive studies for highly active and stable electrocatalysts
have been performed. The platinum group metal (PGM; Pt, Ru, Pd, Rh, etc.) electrocatalysts indicated a
higher activity and stability compared with other transition metals in harsh condition such as acid solution.
It is necessary to develop inexpensive non-noble metal catalysts such as transition metal oxides because the
PGM catalysts is expensive materials with insufficient it’s reserves. The optimization of operating parameter
and the components is also important factor to develop an efficient water electrolysis cell. In this study,
we optimized the operating parameter and components such as the type of AEM and density of gas diffusion
layer (GDL) and the temperature/concentration of the electrolyte solution for the anion exchange membrane
water electrolysis cell (AEMWEC) with the transition metal oxide alloy anode and cathode electrocatalysts.
The maximum current density was 345.8 mA/cm2
with parameter and component optimization.
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