The electrochemical activity of porous electrodes for the alkaline electrolysis of water

摘要

The growing energy consumption and the shortage of the fossil energy sources necessitate the search for alternative energy carriers. In this regard, hydrogen is a safe and versatile energy carrier which can be produced via water electrolysis using renewable energy sources ("green hydrogen"). For a commercial H2-based energy cycle (mobile application) the production costs of green hydrogen must drop below 6 €/Nm~3. Therefore, the long-term efficiency of the electrolysis needs to be improved by developing more active electrode materials for the hydrogen evolution reaction (HER).[1-3]