Li₄Ti₅O₁₂/C Composite Anode Material Synthesized Involving Absorbent Cotton for Li-Ion Battery

Abstract

A puissant specific capacity spherical Li₄Ti₅O₁₂ anode material of Lithium-Ion battery was successfully synthesized by two methods include a high-temperature solid-phase method using solid phase lithium and titanium sources, and a sol-gel method with liquid phase lithium and titanium sources. The carbon coating modification of Li₄Ti₅O₁₂ anode material was carried out by adding absorbent cotton during the reaction process, and the effect of absorbent cotton addition on the structure, morphology and electrochemical performance of Li₄Ti₅O₁₂ was studied. The composite prepared by sol-gel represents a superior first discharge specific capacity of 173 mAh·g⁻¹ at 0.2 C rates, approximately 68 mAh·g⁻¹ at 10 C rates, and the capacity of sample remained 103 mAh·g⁻¹ after 100 cycles of 1 C rate charge/discharge process.

Keywords:

• Li₄Ti₅O₁₂
• absorbent cotton
• specific capacity
• spherical structure

Additional information

Funding

The authors are grateful for financial support from Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province (Project No. 2020FTSZ06) for the research.