Abstract
The low-cost and eco-friendly cobalt free Mn–Ni-based layered compounds are attractive as potential cathode materials for high energy lithium ion batteries. To improve the stability of Mn–Ni-based cathode materials during charging/discharging, surface coating may hinder the side reactions on the interphase between active material and electrolyte. In this work, Li[Li0·17Mn0·58Ni0.25]O2 coated by amorphous Li2ZrO3 nanoparticles are synthesized, the coating quantity and morphologies are studied in detail aiming to find out an efficient approach to enhance electrochemical properties. LMO/LZO2 with an appropriate quantity of Li2ZrO3 coating layer delivers capacity of 253 mAh g−1 at the 1st cycle and remains 87% of the initial capacity after 100 cycles at 0.1 C-rate, moreover, it delivers highest capacity of 145 mAh g−1 at 5 C-rate. Construction a proper coating layer of Li2ZrO3 not only plays the key role in improving the conductivity and lithium ions diffusion ability through the interphase between active material and electrolyte, but also hinders the dissolution of Mn element of lithium-rich cathode material.
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