The b value is in the range between 0.5 and 1.0. The b value of 0.5 implies a diffusion-controlled process. The totally stored charge comes from lithium insertion process. In contrast, b=1 suggests an ideally capacitance-controlled process, which takes place mostly on the surface of electrode . A value between 0.5 and 1 implies the mixed contribution from both the diffusion-controlled process and the capacitive effect. In Figs. and, the CV curves of the dry and 65RH samples show that both the potential difference of the redox peaks and the peak current increase with increasing the scan rate. As demonstrated in Fig. , the currents of the five pairs of cathodic/anodic peaks for TVP anode show a linear dependence on square root of the scan rate. The b values for the cathodic and anodic scans are determined to be 0.69 and 0.71, respectively, revealing that the capacity of TVP anode arises from both diffusion-controlled reactions and surface-controlled processes. However, as shown in Fig. , the b values for 65RH anode are 0.88 and 0.90 for the cathodic and anodic scans, respectively, indicating that the electrochemical lithium storage in 65RH is governed by both diffusion-controlled processes and the capacitive effect, especially a predominant contribution from surface-controlled redox reactions, i.e., the pseudocapacitive behavior.