Electrochemical Analysis of Architecturally Enhanced LiFe_0.5Mn_0.5PO₄ Multiwalled Carbon Nanotube Composite

Figure 5

The cyclic voltammograms of composite LiFe_0.5Mn_0.5PO₄-MWCNTs (a) and LiFe_0.5Mn_0.5PO₄ (b) in 1 M LiPF₆ containing 1 : 1 v/v ethylene carbonate–dimethyl carbonate solvent mixture between 0.1 and 0.8 mV/s. (c) Voltage range: 0.0–0.80 V and comparative Nyquist plots: (i) LiFe_0.5Mn_0.5PO₄-MWCNTs and (ii) LiFe_0.5Mn_0.5PO₄ at formal potential of 0.71 V vs. Li/Li⁺ and perturbation amplitude of 10 mV.

(a)

(b)

(c)