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- Title
Synthesis of defects and TiO2 co-enhanced Li4Ti5O12 by a simple solid-state method as advanced anode for lithium-ion batteries.
- Authors
Liu, Zhenjie; Huang, Yudai; Wang, Xingchao; Zhang, Yue; Ding, Juan; Guo, Yong; Tang, Xincun
- Abstract
High performance and low process cost are two contradictory issues, which limited the commercial application of Li4Ti5O12 (LTO). Here, defects and TiO2 co-enhanced LTO have been synthesized by a simple solid-state method. The crystal structure and morphology of the as-synthesized samples were characterized. The results show that the uniform nanoparticles with spinel structure contained defects and TiO2. Defects and TiO2 co-enhanced LTO shows outstanding reversible discharge capacity of 168.2 mAh g−1 at 1 C after 500 cycles. Further, it presents a stability discharge ability of 155 mAh g−1 at 55 °C at 1 C after 500 cycles. The advanced electrochemical performance could be attributed to the defects and TiO2 in LTO, which enhance conductivity and produce rich reaction interface, facilitating Li+ ion diffusion kinetics. The as-synthesized LTO shows high performance in conjunction with low process cost.
- Subjects
SOLID state batteries; LITHIUM-ion batteries; DIFFUSION kinetics; TITANIUM dioxide; CRYSTAL morphology; CRYSTAL structure
- Publication
Journal of Materials Science: Materials in Electronics, 2021, Vol 32, Issue 5, p6682
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-05383-x