Template-engaged synthesis of spinel-layered Li1.5MnTiO4+δ nanorods as cathodes for Li-ion batteries
- Journal
- J. Power Sources
- Status
- published
- Vol
- 355
- Page
- 134-139
- Year
- 2017
- Link
- https://doi.org/10.1016/j.jpowsour.2017.04.055 524회 연결
Spinel-layered composites of Li1.5MnTiO4þd were studied for their use as high-energy, low-cost, and
environmentally benign cathode materials. The bulk particles showed an attractive specific capacity of
up to 250 mAh g1 at C/10. To improve the performance of this cathode at a high C-rate, a spinel-layered
Li1.5MnTiO4þd nanorod was successfully synthesized using a b-MnO2 nanorod template. The nanorod,
which had an average diameter of 200 nm and a length of 1 mm, showed specific capacity as high as the
bulk particle at C/10. However, owing to a one-dimensional nanostructure with a large effective contact
area for Liþ diffusion, the nanorod sample exhibited enhanced capacities 11% (170 mAh g1) and 167%
higher (80 mAh g1) at 1C and 10C rates, respectively, compared to the bulk particles. Moreover, both
samples showed good cycle stability and capacity retention of over 85% aft