Abstract
In order to improve the rate capability of Li4Ti5O12, Ti4O7 powder was successfully fabricated by improved hydrogen reduction method, then a dual-phase composite Li4Ti5O12/Ti4O7 has been synthesized as anode material for lithium-ion batteries. It is found that the Li4Ti5O12/Ti4O7 composite shows higher reversible capacity and better rate capability compared to Li4Ti5O12. According to the charge-discharge tests, the Li4Ti5O12/Ti4O7 composite exhibits excellent rate capability of 172.3 mAh g−1 at 0.2 C, which is close to the theoretical value of the spinel Li4Ti5O12. More impressively, the reversible capacity of Li4Ti5O12/Ti4O7 composite is 103.1 mAh g−1 at the current density of 20 C after 100th cycles, and it maintains 84.8% of the initial discharge capacity, whereas that of the bare spinel Li4Ti5O12 is only 22.3 mAh g−1 with a capacity retention of 31.1%. The results indicate that Li4Ti5O12/Ti4O7 composite could be a promising anode material with relative high capacity and good rate capability for lithium-ion batteries.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
