Figure : Principle of data analysis for static Li NMR T1 measurements of nano-LTO powder at -10°C, 20°C and 50°C using Inverse Laplace Transformation with non-negativity constrains. a) Spectral density integrated between 25s and 80s (blue line), and between 100s and 315s (red line), scaled by a factor 3. b) Spectrally resolved distribution of Li NMR T1 relaxation time distribution. c) T1 relaxation time distribution of Li, integrated over the spectral dimension.