Charging Dynamics of Electric Double-Layer Nanocapacitors in Mean Field
Year: 2025
Type: article
Abstract: 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.
Source: Physical Review Letters
DOI: 10.1103/72b9-c8cq
Institutions: Institute of Science and Technology Austria, King's College London, Centre National de la Recherche Scientifique, Sorbonne Université, PHENIX laboratory, Sci-Tech Daresbury, Réseau sur le Stockage Electrochimique de l'énergie, École Normale Supérieure de Lyon, Université Paris-Saclay, Laboratoire de Physique Théorique et Modèles Statistiques
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G138880385, G1938396991, TRANSPORT OF SOFT MATTER AT THE NANOSCALE, G2431811828, G434337789, G4550398265, IST-BRIDGE: International postdoctoral program, G515402747, Dielectrophoresis And reverse dielectro-Osmosis for Membraneless Sieving: Toward high-throughput multiscale particles tracking, IST-BRIDGE: International postdoctoral program
OpenAlex ID: W4414607303