Facile Synthesis of Carbon-Coated Spinel Li4Ti5O12/Rutile-TiO2 Composites as an Improved Anode Material in Full Lithium-Ion Batteries with LiFePO4@N-Doped Carbon Cathode

• Published in: ACS applied materials & interfaces Vol. 9; no. 7; pp. 6138 - 6143
• Main Authors: Wang, Ping, Zhang, Geng, Cheng, Jian, You, Ya, Li, Yong-Ke, Ding, Cong, Gu, Jiang-Jiang, Zheng, Xin-Sheng, Zhang, Chao-Feng, Cao, Fei-Fei
• Format: Journal Article
• Language: English
• Published: American Chemical Society 22-02-2017
• Subjects: anode; full lithium-ion battery; rutile-TiO2; carbon coating; Li4Ti5O12
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/acsami.6b15982

The spinel Li4Ti5O12/rutile-TiO2@carbon (LTO-RTO@C) composites were fabricated via a hydrothermal method combined with calcination treatment employing glucose as carbon source. The carbon coating layer and the in situ formed rutile-TiO2 can effectively enhance the electric conductivity and provide quick Li+ diffusion pathways for Li4Ti5O12. When used as an anode material for lithium-ion batteries, the rate capability and cycling stability of LTO-RTO@C composites were improved in comparison with those of pure Li4Ti5O12 or Li4Ti5O12/rutile-TiO2. Moreover, the potential of approximately 1.8 V rechargeable full lithium-ion batteries has been achieved by utilizing an LTO-RTO@C anode and a LiFePO4@N-doped carbon cathode.