Ni-rich LiNi0.6Co0.2Mn0.2O2 microrod with hierarchical structure synthesized by template reaction as cathode material for lithium-ion battery

In this work, one-dimensional Ni-rich LiNi0.6Co0.2Mn0.2O2 microrod cathode material for lithium-ion battery has been firstly prepared by a simple stepwise oxalate co-precipitation method. Rod-like CoC2O4 center dot 2H(2)O formed in the first process is served as template for the formation of MC2O4 center dot 2H(2)O (M=Ni, Co, Mn) precursor, and the morphology of rod-like is maintained after the heat treatment with Li2CO3. The crystalline structure and morphology of the samples are characterized by XRD, SEM, and TEM/HRTEM. The electrochemical performances are evaluated by galvanostatic charge/discharge tests. With the beneficiation of micro/nanostructure, the LiNi0.6Co0.2Mn0.2O2 microrod cathode material shows an initial discharge capacity of 162, 134, 117, and 105 mAh g(-1) at 0.1 degrees C, 1 degrees C, 3 degrees C, and 5 degrees C, respectively, and maintains 72.8% of its initial discharge capacity after 100 cycles at 1 degrees C.