Nanosized-LiMn2O4/C Cathode with Enhanced Lithium Storage Properties Prepared By One-Pot Synthesis Technique

Abstract

A facile method with one-pot polyol-assisted pyro-technique has been adopted to synthesize highly crystalline, carbon-coated LiMn2O4 (LMO/C) nanoparticles for using as a cathode material in rechargeable Li-ion battery (LIB) applications. this study shows the efficacy of a simple and low-cost pyro-synthesis to realize high performance nano-sized particle electrodes with uniform carbon coating for useful energy storage applications. As using X-ray techniques, we confirmed The phase purity, structure and stoichiometry of the prepared cathode. Electron microscopy studies established that the synthetic technique facilitated the production of nano-sized LMO particles with uniform carbon coating. LMO/C cathode demonstrates excellent electrochemical properties (cycling stabilities of 86% and 77.5% and high rate capabilities of 79% and 36% within the potential windows of 3.3–4.3V and 2.5–4.3V, respectively). The high electrochemical performance of the LMO/C cathode is attributed to the nano-size of the LiMn2O4 particles enabling high surface area and hence greater lithium insertion and also the uniform amorphous carbon coating facilitating effective reduction in manganese dissolution and volume expansion during the lithium de-intercalation/intercalation reactions