Comment on “Boosting large scale capacitive harvesting of osmotic power by dynamic matching of ion exchange kinetics” by N. Chapuis and L. Bocquet, Sustainable Energy Fuels, 2025, 9, 2087

Abstract

This article is a comment on N. Chapuis and L. Bocquet [Sustainable Energy Fuels, 2025, 9, 2087–2097]. In this work, the authors present an experimental process that shows how it is possible to set up a reverse electrodialysis cell capable of achieving power values of 5 W m⁻². This value is the profitability threshold. Our work challenges this claim and questions whether the proposed technique can be scaled up.