Electrolyzer stack end plate assembly with fluid-isolating insert(s)

Abstract

Electrolyzer systems and end plate assemblies are provided with one or more fluid-isolating inserts. The electrolyzer system includes a stack of electrolyzer cells, a current collector, an end plate assembly, and an isolation plate positioned between the end plate assembly and current collector. The end plate assembly includes at least one fluid channel to allow fluid to pass therethrough, where the fluid channel(s) is in fluid communication with at least one fluid channel through the current collector and isolation plate. The end plate assembly includes an end plate and an fluid-isolating insert residing, at least in part, within a pocket in the end plate. The fluid-isolating insert includes at least one electrically-isolating fluid channel that defines, at least in part, the fluid channel(s) of the end plate assembly, where the fluid-isolating insert increases an effective length of a fluid conduction path between the current collector and the end plate.