fig5

Figure 5. GITT characterization and intercalation-pseudocapacitive behavior of Nb₄W₇O₃₁: (A) first-cycle GITT curve at 0.1C, (B) E vs. τ curves for a single GITT step, (C) linear relationship of E vs. τ^0.5 during a typical titration, and (D) variations in Li⁺ diffusion coefficients during lithiation and delithiation. (E) CV curves of Nb₄W₇O₃₁/Li half cell at various scan rates. Pseudocapacitive contributions at (F) 0.2, (G) 0.4, (H) 0.7, and (I) 1.1 mV s^-1.