Electrical power Enter: The electricity required to push the electrolysis process is applied to the electrolyzer’s electrodes. This existing facilitates the chemical response that splits the h2o molecules. Hydrogen then passes from the membrane and ejects to the cathode facet. PEM electrolyzers operate at excellent temperatures of 60oC to 80oC. https://electrolyzer66555.wikienlightenment.com/7962313/the_best_side_of_pem_electrolysis