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A New Cell Configuration for a More Precise Electrochemical Evaluation of an Artificial Solid‐Electrolyte Interphase
Author(s) -
Bobnar Jernej,
Vizintin Alen,
Kapun Gregor,
Njel Christian,
Dedryvère Rémi,
Dominko Robert,
Genorio Bostjan
Publication year - 2021
Publication title -
batteries and supercaps
Language(s) - English
Resource type - Journals
ISSN - 2566-6223
DOI - 10.1002/batt.202000255
Subject(s) - electrolyte , electrode , electrochemistry , interphase , polypropylene , electrochemical cell , materials science , stripping (fiber) , chemical engineering , polymer , chemistry , composite material , genetics , engineering , biology
The study of an artificial solid‐electrolyte interphase (SEI) can lead to a misinterpretation of the electrochemical results obtained with the classical cell configuration due to so‐called edge effect. A technical solution is presented here that minimizes the edge effect by using a new cell configuration with a polypropylene disc. A new cell configuration allows a simple electrochemical evaluation of an artificial SEI with a more precisely defined effective area and homogeneously distributed current density. The application of such a technical solution manifests itself through better defined deposition and stripping curves in relation to surface electrochemistry and can differ significantly from the results obtained with the classical cell configuration. Finally, a model system ‐ a lithium electrode protected with trimethylolpropane ethoxylate triacrylate polymer‐was used to evaluate and compare the new cell configuration with the classical two electrode cell configuration.