The majority of commercial lithium-ion batteries (LIBs) employ LiCoO2 as a cathode material. The high cost, limited resources as well as the toxicity of Co, and safety issues associated with LiCoO2 cathode has led to the development of other cathode materials. In the past decades, different types of alternative cathodes were developed and great improvements have been achieved. Currently, the mixture of Li2MnO3 and LiMeO2 (Me = Ni, Co, Mn, etc) with a general formula of xLi2MnO3-(1-x)LiMeO2 have received great attention due to they provide a higher energy density than that of LiCoO2, LiMn2O4, LiFePO4, etc. In this study, xLi2MnO3-(1-x)LiNi0.9Zn0.1O2 (x = 0.1, 0.2 and 0.3) cathodes were prepared by two steps solid-state reaction method. The target of the research work is to investigate the effect Li2MnO3 content on the thermal, structural, electrical and electrochemical properties of xLi2MnO3-(1-x)LiNi0.9Zn0.1O2 cathode materials. Layered crystalline phases (space groups of C2/m for Li2MnO3 and R3m for LiNi0.9Zn0.1O2) were detected in all cathodes. The structural parameters were greatly influenced by the contents of Li2MnO3 in xLi2MnO3-(1- x) LiNi0.9Zn0.1O2. The electrical conductivities were found in the range of 1.2x10-6 to 2.7x10-6 S/cm. The dielectric spectra revealed the interfacial polarization Maxwell–Wagner type dielectric dispersion existing in all samples. The cathodes delivered the discharge capacities of 149 (x = 0.1), 151 (x = 0.2) and 157 mAh/g (x = 0.3) with capacity retention between 94.6 and 96.8% when they were cycled from 3.0 to 4.5 V under 0.1C rate. The x = 0.3 cathode exhibited the highest cyclic performance (96.8%) due to its lower cations disorder. From this study, it was identified that The structural parameters, electrical, dielectric and electrochemical properties were found to be affected by the Li2MnO3 content in xLi2MnO3-(1- x)LiNi0.9Zn0.1O2 lattice.
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