Comment on Boosting large scale capacitive harvesting of osmotic power by dynamical matching of ion exchange kinetics

This article is a comment of N. Chapuis and L. Bocquet, Sustainable Energy Fuels, 2025, DOI: 10.1039/D4SE01366B which title is "Boosting large scale capacitive harvesting of osmotic power by dynamical matching of ion exchange kinetics". 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/m2. This value is the profitability threshold. Our work challenges this claim and questions whether the proposed technique can be scaled up, as well as the modeling of the process.

Nan Wu, Mathieu BA Freville, Zhiyi Man, Adérito Fins Carreira, Timothée Derkenne, Corentin Tregouet, Annie Colin · 2025