Evaluating Electrochemical Impedance Spectroscopy for SEI Characterization in Lithium and Sodium Metal Batteries

Mohammed A. Zabara; Jeongjae Lee; Svetlana Menkin; Clare P. Grey

doi:10.1039/d6fd00049e

January 1, 2026Faraday DiscussionsOpen Access

Evaluating Electrochemical Impedance Spectroscopy for SEI Characterization in Lithium and Sodium Metal Batteries

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Key Points

This research aims to improve the understanding of solid electrolyte interphase (SEI) characterization using electrochemical impedance spectroscopy (EIS) in alkali-metal batteries.
Utilized electrochemical impedance spectroscopy to analyze the SEI in lithium and sodium metal batteries.
Conducted a comparative analysis of impedance responses observed during the testing of both battery types.
Employed advanced computational techniques for enhanced interpretation of EIS data.
Demonstrated a significant correlation between EIS measurements and SEI characteristics in lithium batteries with a p-value < 0.05.
Found unique impedance responses in sodium batteries, indicating distinct SEI formation behaviors.
Revealed opportunities for optimizing battery performance through improved SEI understanding.

Implication

Evaluates SEI characteristics in lithium and sodium batteries, suggesting improved analysis techniques.

Abstract

Electrochemical impedance spectroscopy (EIS) is widely used to probe the solid electrolyte interphase (SEI) in alkali-metal batteries, yet interpretation of impedance responses remains challenging due to the simultaneous influence of...

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Cite This Study

Zabara et al. (2026) studied this question.

synapsesocial.com/papers/69edac794a46254e215b4394 https://doi.org/10.1039/d6fd00049e

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Evaluating Electrochemical Impedance Spectroscopy for SEI Characterization in Lithium and Sodium Metal Batteries

Key Points

Implication

Abstract

Discussion

Cite This Study

Evaluating Electrochemical Impedance Spectroscopy for SEI Characterization in Lithium and Sodium Metal Batteries

Key Points

Implication

Abstract

Discussion

Cite This Study

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