Electrolyser Design: Toll Roads for Electrons

Deep End Era. Engineering with Sankalp · Oct 11, 2026 · 58m

A drifting cell voltage sends Mariam, a fictional process engineer, looking for what is ageing inside a hydrogen stack. Explore water-splitting thermodynamics, alkaline, PEM, solid oxide and AEM electrolysers, then follow the tradeoffs between current density, efficiency, iridium, degradation and cost. The episode connects the stack to pressure, purity, balance of plant and operation with solar and wind. Story characters, plants and illustrative story numbers are fictional.

Chapters

00:00:00 Cold open: the stack that lost its voltage

00:03:08 Splitting water from first principles

00:10:13 The…