Li- and Mn-rich layered Li1.2Ni0.13Co0.13Mn0.54O2 cathode material was synthesized using sonochemical method followed by annealing at 700, 800, and 900 °C for 10 h. The material was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and electrochemical techniques. Its performance as a cathode material for Li-ion batteries was examined. With the sample annealed at 900 °C, an initial specific capacity of 240 mAh g−1 was obtained, which decreased to 215 mAh g−1 after 80 cycles, thus retaining about 90 % of its initial capacity. In contrast, samples annealed at lower temperatures exhibited lower capacity retention upon cycling. Thus, the final annealing temperature was found to have a significant effect on the electrochemical stability of this material in terms of capacity, average voltage, and rate capability. The advantage of this synthesis, which includes a sonochemical stage, compared with a conventional co-precipitation synthesis, was also confirmed.
|Number of pages||13|
|Journal||Journal of Solid State Electrochemistry|
|State||Published - Jun 2016|
Bibliographical noteFunding Information:
P. Sivakumar thanks the Council for Higher Education, the State of Israel, for the PBC scholarship for outstanding postdoctoral researchers from China and India. This work was partially supported by the Israel Science Foundation-ISF, as part of the INREP project.
© 2016, Springer-Verlag Berlin Heidelberg.
- High capacity
- Li and Mn rich cathode materials
- Li-ion battery