Fig. 4: Electrochemical analysis.

a Cyclic voltammograms for Li||iMOF cells. b Plots of I_p v^−1/2 vs. v^1/2 from 0.015 mV s⁻¹ to 0.150 mV s⁻¹ for Li||iMOF cells. c k₁/k₂ values for anodic oxidation and cathodic reduction in the CV curves obtained from (b) for each sample. d Relationship of capacity retention at the specific current in 400 mA g⁻¹ in Fig. 2(f) to the anodic k₁/k₂ for each sample. e Plots of determination in the linear approximation (R²) of the potential change vs. the root of time (t^1/2) during current application in GITT measurements during Li intercalation (0.0–1.0) and deintercalation (1.0–2.0) for each sample vs. normalized capacity. f Plots of D_Li obtained by GITT vs. R² for each sample. The areas in pink are treated as solid-solution reaction mechanism areas for D_Li. g Comparison of the plot of D_Li vs. the potential for each sample. D_Li are the values in the pink area in (f).