|
|||||
|
|
Synthesis and structural characterization of layered Li[Ni1/3Co1/3Mn1/3]O2 cathode materials by ultrasonic spray pyrolysis method |
|
| Authors: | SH Park SG Kang S-I Moon |
| Affiliation: | a Department of Chemical Engineering, Hanyang University, Seungdong-Gu, Seoul 133-791, South Korea b Division of Materials Science and Engineering, Hanyang University, Seungdong-Gu, Seoul 133-791, South Korea c Battery Research Group, Korea Electrotechnology Research Institute, 28-1 Sungjoo-dong Changwon, Kyungnam 641-120, South Korea |
| Abstract: | The layered LiNi1/3Co1/3Mn1/3]O2 materials were synthesized by a spray pyrolysis method using citric acid as a polymeric agent. The LiNi1/3Co1/3Mn1/3]O2 powders were characterized by means of X-ray diffraction (XRD), charge/discharge cycling, cyclic voltammetry, and high-resolution transmission electron microscopy (TEM). The discharge capacity increases linearly with the increase of the upper cut-off voltage limit. TEM analysis showed that particles in the as-prepared powder possessed a polycrystalline structure. During cycling, the particle structure is mostly preserved although some surface grains on the polycrystalline particle became separated and transformed to the spinel phase. |
| Keywords: | Lithium-ion battery Cathode materials Layered structure Spray pyrolysis HRTEM |
| 本文献已被 ScienceDirect 等数据库收录！ | |