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The effects of Na doping on performance of layered Li1.1-xNax[Ni0.2Co0.3Mn0.4]O-2 materials for lithium secondary batteries
- Authors
- Park, Sang Ho; Shin, Sun-Sik; Sun, Yang Kook
- Issue Date
- Feb-2006
- Publisher
- Elsevier BV
- Keywords
- lithium secondary batteries; layered material; Na doping; sol-gel method
- Citation
- Materials Chemistry and Physics, v.95, no.2-3, pp 218 - 221
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials Chemistry and Physics
- Volume
- 95
- Number
- 2-3
- Start Page
- 218
- End Page
- 221
- ISSN
- 0254-0584
1879-3312
- Abstract
- Layered Li1.1-xNax[Ni0.2Co0.3Mn0.4]O-2 (x= 0, 0.05, 0.1 and 0.2) materials with high homogeneity and high crystallinity were prepared by a sol-gel method. Structural and electrochemical properties of the Li1.1-xNax[Ni0.2Co0.3Mn0.4]O-2 materials were characterized by means of powder X-ray diffraction, and galvanostatic charge/discharge cycling. Na-doped samples had a phase-pure layered structure with a space group of R3m (No. 166). Although, the discharge capacity decreased linearly with increases of Na-substitution, only a few of the Na-doped (x = 0.05, 0.1) electrodes exhibited superior rate capability and good capacity retention.
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Related Researcher
- Sun, Yang Kook
- COLLEGE OF ENGINEERING (DEPARTMENT OF ENERGY ENGINEERING)