Open AccessCommunication—Demonstrating the Role of Mass Transport in Double Layer Formation
Author(s) -
Amanda P. Cameron,
Sofia B. Davey,
Caitlin L. Callahan,
Scott W. Donne
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac55ca
Subject(s) - electrolyte , electrode , boundary layer , capacitance , materials science , chemical physics , layer (electronics) , glassy carbon , aqueous solution , planar , charge (physics) , rotation (mathematics) , carbon fibers , convection , porosity , flow (mathematics) , chemical engineering , chemistry , mechanics , electrochemistry , composite material , geometry , physics , cyclic voltammetry , computer graphics (images) , mathematics , quantum mechanics , composite number , computer science , engineering
Herein we present insight into the structure and behaviour of the electrified interface between a planar non-porous glassy carbon electrode and an aqueous solution of 0.5 M Na 2 SO 4 . Specifically, a glassy carbon rotating disk electrode was used to show correspondence between increasing rotation rates, decreasing boundary layer thicknesses, and decreasing interfacial capacitance. The implication is that electrolyte counter charge is being dissipated by convective flow outside of the macroscopically thick boundary layer, indicating that electrolyte counter-charge extends substantially into the electrolyte.