Fig. 5: Monitoring Ethylene Carbonate (EC) solvent and vinylene concentrations. | Nature Communications

Fig. 5: Monitoring Ethylene Carbonate (EC) solvent and vinylene concentrations.

From: Hollow-core optical fibre sensors for operando Raman spectroscopy investigation of Li-ion battery liquid electrolytes

Fig. 5

a, b Evolution of Raman EC-breathing mode and vinylene -HC = CH- band during the formation cycle (baseline-subtracted). Dashed curves are spectra taken at times highlighted in c (colouration of each curve corresponds to a specific time). Cell voltage during cycling, segmented into regions I-V. d Time evolution of EC and VC Raman band intensities. The Raman signal intensity of the vinylene band in b was multiplied by 25 relative to that shown in a.

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