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Updated: Jan 28, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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Operando Investigation into Dynamic Evolution of Cathode-Electrolyte Interfaces in a Li-Ion Battery
Dongchang Chen1,2, Mahmoud A Mahmoud2,3, Jeng-Han Wang4
1School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies , Georgia Institute of Technology , 771 Ferst Drive , Atlanta , Georgia 30332-0245 , United States.
Nano Letters
|February 27, 2019
Summary
Researchers used surface-enhanced Raman spectroscopy (SERS) to track changes in lithium-ion battery cathode-electrolyte interfaces (CEIs). This method provides insights into CEI dynamics during battery cycling, crucial for improving battery performance and longevity.
Area of Science:
- Materials Science
- Electrochemistry
- Surface Science
Background:
- Cathode-electrolyte interfaces (CEIs) are critical for lithium-ion battery performance.
- Understanding CEI chemical nature and dynamics during cycling remains a significant challenge.
Purpose of the Study:
- To investigate the dynamic evolution of the CEI between a LiNi0.33Co0.33Mn0.33O2 (LNMC) cathode and an ethylene carbonate/dimethyl carbonate (EC/DMC) electrolyte.
- To develop a quasi-quantitative method for assessing CEI evolution during electrochemical cycling.
Main Methods:
- Utilized surface-enhanced Raman spectroscopy (SERS) on a model cell with a LiNi0.33Co0.33Mn0.33O2 (LNMC) cathode.
- Employed a monolayer of gold (Au) nanocubes on the LNMC electrode to enhance SERS activity.
- Performed theoretical calculations to model interface interactions.
Main Results:
- Demonstrated quasi-quantitative assessment of CEI evolution during cycling using SERS.
- Revealed the dynamics of species adsorbed on the LNMC surface as a function of cell potential.
- Experimental observations were supported by theoretical calculations.
Conclusions:
- The operando SERS platform offers high sensitivity, surface specificity, and compatibility with electrochemical measurements.
- This approach is valuable for studying dynamic interfaces in energy storage and conversion systems.
- Provides crucial insights into CEI dynamics for advancing lithium-ion battery technology.
Keywords:
Raman spectroscopycathode−electrolyte interface (CEI)lithium-ion batterysurface-enhanced Raman spectroscopy (SERS)More Related Videos
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