A model for the current-voltage characteristic of membrane/electrolyte junctions

2024/08/30 by Leandro Julian Mele, Mele, Leandro Julian, Muhammad A. Alam +3
Engineering · #Advanced Battery Technologies Research #Applied Physics (physics.app-ph) #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Fuel Cells and Related Materials #Membrane-based Ion Separation Techniques

paper · pdf · doi:10.48550/arxiv.2409.10530

openalex publication_date 2024/08/30 · openalex created_date 2024/10/24 · openalex updated_date 2026/07/28

Abstract

A model for the current-voltage characteristic of the junction between an Ion-Sensitive-Membrane and an electrolyte solution is derived and compared with numerical simulations of the Poisson-Nernst-Planck model for ion transport. The expression resembles that of a semiconductor pn junction with a non-ideality factor of 2. The non-ideality correlated to the voltage drop in the electrolyte induced by the re-arrangement of the counter-ions.

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