(a) Cyclic Voltammetry at different scan rates
of LiFePO4 (1.4 g/L). Inset shows the CV of a 1g/L LiFePO4 in DABA/RGO (40:1) in which the characteristic wave from DABA is still
apparent. (b) PEIS impedance spectra of LiFePO4 (1.4 g/L) in
DABA/RGO (40:1) recorded at 0.1V (reduced) and at 0.9 V (oxidized).