Synthesis, Characterization and Electrochemistry of Cathode Material Li [Li<sub>0.2</sub>Mn<sub>0.54</sub>Ni<sub>0.13</sub>Co<sub>0.13</sub>]O<sub>2</sub> Nanofibers Prepared by Electrospinning for Lithium Ion Batteries

Abstract

Nanofibers of Li [Li0.2Mn0.54Ni0.13Co0.13]O2with high crystallinity were easily synthesized by electrospinning. Scanning electron microscopy (SEM) showed that precursor wires were glossy, and the diameters of oxide calcined at 800°C were 50-200 nm. And X-ray diffraction (XRD) exhibited perfect crystal structure. The electrochemical properties of materials with the specific morphology were significantly improved. The first charge/discharge capacity was around 309.3 and 270.2 mAh·g-1at 25 mA·g-1, and the first coulomb efficiency (87.4%) represented a good efficiency for Li2MnO3-type electrodes. After 20 cycles, discharge capacity was over 200 mAh·g-1at 25 mA·g-1, and capacity retention was 79.8% at 250 mA·g-1.Owing to its simplicity and applicability, the electrospinning method is an promising method to fabricate high performance Li [Li0.2Mn0.54Ni0.13Co0.13]O2materials for lithium ion batteries.