Abstract
Spinel Li4Ti5O12 (LTO) has been intensively investigated as promising anode material for large-scale stationary electrochemical storage of energy produced from renewable sources due to its remarkable structural stability and excellent safety. In this paper, nanoparticles-constructed LTO with extra surface lithium storage capability is successfully prepared in air at 600°C via employing TiOSO4·2H2O as Ti source. The newly prepared nanoparticles-constructed LTO displays enhanced electrochemical performances, demonstrating ultrahigh reversible capacity of 173mAhg−1 at 0.5C and superior rate performance of more than 145mAhg−1 at 30C between 1.0 and 2.5V vs. Li+/Li. The influences of specific surface area and crystallinity on the extra surface lithium storage capability of the sintered samples for LIBs are investigated in detail in terms of reversible capacity, cyclability and rate capability. Our results reveal that not only specific surface area but also crystallinity and pored structure are vital for reducing electrode polarization and achieving extra surface lithium storage of LTO. We anticipate that the uniquely extra surface lithium storage reaction of LTO will get more attentions in the near future.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
