Abstract

Li[Li0.2Ni0.133Co0.133Mn0.534]O2 sample with porous sandwich structure is prepared via a carbon gel–combustion synthesis process and a polypropylene membrane with microporous structure as hard template. As cathode materials, the discharge capacity of the sample is 230.2 mAh g−1 in the first cycle at 0.2 C and 241.3 mAh g−1 after 50 cycles, and the electrode still delivers average discharge capacity of 78.0 mAh g−1 even at 30 C rate. The outstanding electrochemical properties for the 2-D porous structural features, high crystallinity and structural stability and low charge transfer resistance suggest the applications of Mn-based Li-rich layered oxides in high power lithium-ion batteries.

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