Fig. 2: The LiF and Li2O formation during the heating process.
From: In situ observation of thermal-driven degradation and safety concerns of lithiated graphite anode

a The Rietveld refinement of lithiated anode before heating. b The Rietveld refinement of lithiated anode after heating to 280 °C. c The formation of LiF by tracing the LiF (111) and (200) Bragg reflections. d Li2O formation by tracing the Li2O (111) and (220) Bragg reflections.