Template-engaged synthesis of spinel-layered Li1.5MnTiO4+Δ nanorods as a cathode material for Li-ion batteries
- Authors
- Ngoc Hung Vu; Unithrattil, Sanjith; Van Hien Hoang; Chun, Sangeun; Im, Won Bin
- Issue Date
- Jul-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- LiMnTiO4; Nanorod; Template; Spinel framework; Li-ion battery
- Citation
- JOURNAL OF POWER SOURCES, v.355, pp.134 - 139
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 355
- Start Page
- 134
- End Page
- 139
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/19533
- DOI
- 10.1016/j.jpowsour.2017.04.055
- ISSN
- 0378-7753
- Abstract
- Spinel-layered composites of Li1.5MnTiO₄+δ 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 g⁻¹ at C/10. To improve the performance of this cathode at a high C-rate, a spinel-layered Li1.5MnTiO4+δ nanorod was successfully synthesized using a β-MnO₂ nanorod template. The nanorod, which had an average diameter of 200 nm and a length of 1 μm, 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 Li+ diffusion, the nanorod sample exhibited enhanced capacities 11% (170 mAh g⁻¹) and 167% higher (80 mAh g⁻¹) at 1C and 10C rates, respectively, compared to the bulk particles. Moreover, both samples showed good cycle stability and capacity retention of over 85% after 100 cycles at 1C.
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