Preparation and Electrochemical Performance of Li[Ni1/3Co1/3Mn1/3]O2 Synthesized Using Li2CO3 as Template

Porous structure Li[ Ni1/ Co-3(1)/ Mn-3(1)/ 3] O2 has been synthesized via a facile carbonate co- precipitation method using Li2CO3 as template and lithium- source. The physical and electrochemical properties of the materials were examined by many characterizations including TGA, XRD, SEM, EDS, TEM, BET, CV, EIS and galvanostatic charge- discharge cycling. The results indicate that the as- synthesized materials by this novel method own a well-ordered layered structure alpha- NaFeO2 [ space group: R-3m( 166)], porous morphology, and an average primary particle size of about 150 nm. The porous material exhibits larger specific surface area and delivers a high initial capacity of 169.9 mAh center dot g(-1) at 0.1 C ( 1 C= 180 mA center dot g-1) between 2.7 and 4.3 V, and 126.4, 115.7 mAh center dot g(-1) are still respectively reached at high rate of 10 C and 20 C. After 100 charge- discharge cycles at 1 C, the capacity retention is 93.3%, indicating the excellent cycling stability.