Fig. 5: EPR data showing broad and narrow fitting components at 10 K of the HC pristine and ball-milled samples. | Nature Communications

Fig. 5: EPR data showing broad and narrow fitting components at 10 K of the HC pristine and ball-milled samples.

From: Electron paramagnetic resonance as a tool to determine the sodium charge storage mechanism of hard carbon

Fig. 5: EPR data showing broad and narrow fitting components at 10 K of the HC pristine and ball-milled samples.

EPR characterisation of a–c HC700 and d–f HC1000 pristine and ball-milled materials at 10 K, using a mass loading of 1 mg. The broad signal (orange) is related to the initial extended aromatic structure in the ball-milled samples, while the narrow signal (blue) appeared after ball-milling and is related to new defects created during the ball-milling process. Source data are provided as a Source Data File.

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