Synthesis and structural characterization of layered Li[Ni 1/3Co 1/3Mn 1/3]O 2 cathode materials by ultrasonic spray pyrolysis method

The layered Li[Ni 1/3Co 1/3Mn 1/3]O 2 materials were synthesized by a spray pyrolysis method using citric acid as a polymeric agent. The Li[Ni 1/3Co 1/3Mn 1/3]O 2 powders were characterized by means of X-ray diffraction (XRD), charge/discharge cycling, cyclic voltammetry, and high-resolution transmi...

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Published inElectrochimica acta Vol. 49; no. 4; pp. 557 - 563
Main Authors Park, S.H., Yoon, C.S., Kang, S.G., Kim, H.-S., Moon, S.-I., Sun, Y.-K.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.02.2004
Subjects
Cathode materials
HRTEM
Layered structure
Lithium-ion battery
Spray pyrolysis
Lithium-ion battery
Layered structure
Spray pyrolysis
Cathode materials
HRTEM
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Summary:The layered Li[Ni 1/3Co 1/3Mn 1/3]O 2 materials were synthesized by a spray pyrolysis method using citric acid as a polymeric agent. The Li[Ni 1/3Co 1/3Mn 1/3]O 2 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.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2003.09.009