Charging Dynamics of Electric Double-Layer Nanocapacitors in Mean Field
An electric double-layer capacitor (EDLC) stores energy by modulating the spatial distribution of ions in the electrolytic solution that it contains. We determine the mean-field timescales for planar EDLC relaxation to equilibrium after a potential difference is applied. We tackle first the fully symmetric case, where positive and negative ionic species have the same valence and diffusivity, and then the general, more complex, asymmetric case. Depending on the applied voltage and salt concentration, different regimes appear, revealing a remarkably rich phenomenology relevant for nanocapacitors.
Authors
- Emmanuel Trizac
- Patrick B. Warren (ORCID: https://orcid.org/0000-0002-0189-2704)
- Adelchi J. Asta
- M. Dutta
- Benjamin Rotenberg (ORCID: https://orcid.org/0000-0001-5198-4650)
- Ivan Palaia (ORCID: https://orcid.org/0000-0002-8843-9485)
Institutions
- École Normale Supérieure de Lyon (FR)
- Institute of Science and Technology Austria (AT)
- King's College London (GB)
- Université Paris-Saclay (FR)
- Sorbonne Université (FR)
- Réseau sur le Stockage Electrochimique de l'énergie (FR)
- Laboratoire de Physique Théorique et Modèles Statistiques (FR)
- DESA (US)
- Sci-Tech Daresbury (GB)
- PHENIX laboratory (FR)
- Laboratoire Médiations (FR)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-09-29
- DOI
- https://doi.org/10.1103/72b9-c8cq
- Citations
- 3
- Primary Topic
- Membrane-based Ion Separation Techniques
- Type
- article
- Field-Weighted Citation Impact
- 2.02