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Eidenschink, Johannes ; Matysik, Frank‐Michael

Simultaneous Scanning Ion Conductance and Electrochemical Microscopy in Lithium‐Ion Battery Research

Eidenschink, Johannes and Matysik, Frank‐Michael (2024) Simultaneous Scanning Ion Conductance and Electrochemical Microscopy in Lithium‐Ion Battery Research. ChemElectroChem.

Date of publication of this fulltext: 25 Jan 2024 06:36
Article
DOI to cite this document: 10.5283/epub.55418


Abstract

Deeper understanding of processes involved in operation of lithium-ion batteries (LIBs) is necessary to further optimize them for future applications. Extensive research was conducted on the formation of a solid electrolyte interphase (SEI) on negative battery electrodes, still leaving several questions unanswered. Scanning probe microscopies (SPMs) enable in situ and operando investigations and ...

Deeper understanding of processes involved in operation of lithium-ion batteries (LIBs) is necessary to further optimize them for future applications. Extensive research was conducted on the formation of a solid electrolyte interphase (SEI) on negative battery electrodes, still leaving several questions unanswered. Scanning probe microscopies (SPMs) enable in situ and operando investigations and have the potential to explain some phenomena. Scanning electrochemical microscopy (SECM) and scanning ion conductance microscopy (SICM) could be employed in LIB studies. A novel SICM method based on the redox couple ferrocene/ferrocenium is introduced for applications in carbonate solvents widely used in LIBs. Proof of concept measurements were conducted with a micro milled copper circuit board as model substrate. Furthermore, the proposed SICM approach was hyphenated with feedback mode SECM resulting in the simultaneous mapping of morphology and electrochemical activity. A flexible dual-probe arrangement was developed enabling usage of both SPM techniques at the same time, and furthermore, an easy replacement of both individual probes if needed. The setup was applied in the characterisation of commercial graphite electrodes for LIBs before and after conducting a pre-charging protocol. Changes in electrochemical activity and topography of the graphite electrode were resolved in simultaneously generated SECM/SICM recordings.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitleChemElectroChem
Publisher:Wiley
Date12 January 2024
InstitutionsChemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Instrumentelle Analytik (Prof. Frank-Michael Matysik)
Identification Number
ValueType
10.1002/celc.202300577DOI
KeywordsElectrochemistry · Interfacial Studies · Lithium-Ion Batteries · Scanning Probe Microscopy · Solid Electrolyte Interphase
Dewey Decimal Classification500 Science > 540 Chemistry & allied sciences
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-554185
Item ID55418

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