3-D dumbbell-like LiNi1/3Mn1/3Co1/3O2 cathode materials assembled with nano-building blocks for lithium-ion batteries
- Authors
- Ryu, WH (Ryu, Won-Hee); Lim, SJ (Lim, Sung-Jin); Kim, WK (Kim, Won-Keun); Kwon, H (Kwon, HyukSang)
- Issue Date
- Jul-2014
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF POWER SOURCES, v.257, pp 186 - 191
- Pages
- 6
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 257
- Start Page
- 186
- End Page
- 191
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147286
- DOI
- 10.1016/j.jpowsour.2014.02.003
- ISSN
- 0378-7753
1873-2755
- Abstract
- Dumbbell-like microsphere carbonate precursors including multi-transition metal components (Ni1/3Mn1/3Co1/3CO3) assembled with nano-building blocks were synthesized by urea-assisted solvo/hydrothermal method, and layered cathode materials (LiNi1/3Mn1/3Co1/3O2) were subsequently prepared using the similarly shaped carbonate precursors for Li-ion batteries. For the synthesis of hierarchical microsphere structures, the partial addition of viscous organic solvent (e.g. ethylene glycol) in aqueous solution played a crucial role, not only in suppressing the sudden particle growth but also in regulating the directional crystallization of carbonate particles on the surface. The dumbbell-like LiNi1/3Mn1/3Co1/3O2 assembled with nanocubes prepared via the urea-assisted solvo/hydrothermal method exhibited better electrochemical characteristics, such as initial discharge capacity, cyclic performance, and rate-capability as a cathode material of Li-ion batteries, compared with the LiNi1/3Mn1/3Co1/3O2 materials prepared via the conventional co-precipitation method. (C) 2014 Elsevier B.V. All rights reserved.
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