Synthesis and characterization of nanocomposites based on poly(3-hexylthiophene)- graft -carbon nanotubes with LiNi 0.5 Mn 1.5 O 4 and its application as potential cathode materials for lithium-ion batteries

The P3HT grafted on CNTs to form the P3HT- g -CNTs nanocomposites was synthesized and their morphologies, structure have been characterized via the sedimentation test, scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the P3HT- g -CNTs has a better thermal stability than that of the P3HT/CNTs blend. The nanocomposite based on P3HT- g -CNTs and doped spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) have been fabricated via mixing process. The structure and morphologies of LNMO/P3HT- g -CNTs nanocomposites have also been performed by SEM, XRD and TEM. The electrochemical performance of LNMO/P3HT- g -CNTs nanocomposites as cathode materials of lithium-ion batteries were investigated by cyclic voltammetry and electrochemical impedance spectroscopy and exhibited the high diffusion of lithium ions in the charge–discharge process.