Eidenschink, Johannes and Matysik, Frank-Michael (2024) Simultaneous Scanning Ion Conductance and Electrochemical Microscopy in Lithium-Ion Battery Research. CHEMELECTROCHEM, 11 (6). e202300577. ISSN 2196-0216
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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. Hyphenated scanning electrochemical (SECM) and ion conductance microscopy (SICM) in the context of lithium-ion battery (LIB) research is introduced. It represents a powerful approach to generate information about the electrochemical activity and the topography of substrates at the same time. The applicability is showcased with the investigation of a LIB graphite electrode before and after application of a pre-charging protocol.image
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SOLID-ELECTROLYTE-INTERPHASE; VISUALIZATION; Electrochemistry; Interfacial Studies; Lithium-Ion Batteries; Scanning Probe Microscopy; Solid Electrolyte Interphase |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Instrumentelle Analytik (Prof. Frank-Michael Matysik) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Jan 2026 10:41 |
| Last Modified: | 13 Jan 2026 10:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/63908 |
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