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. 2019 Feb 13;10:725. doi: 10.1038/s41467-019-08506-5

Fig. 2.

Fig. 2

In operando Raman spectroscopy. Raman spectra of the TiO2 anode during the first cycle of electrochemical sodiation/de-sodiation at a rate of 100 mA g−1 (R.S.: Raman shifts), a using the EC/DEC-based electrolyte and b using the diglyme-based electrolyte21