TiO2/MWCNTs composite as high performance anode material for sodium storage

• Published in: Inorganic chemistry communications 2021-01, Vol.123, p.108325, Article 108325
• Main Authors: Lv, Shujun, Wang, Shuaihao, Zheng, Jie, Sun, Xuejiao, He, Wenxiu
• Format: Article
• Language: English
• Subjects: Anode material for SIBs; Multi-walled carbon nanotubes; Sol-gel method; TiO2
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2020.108325

The TiO2/MWCNTs contributes to excellent cycling performance. [Display omitted] •TiO2/MWCNTs composites were prepared with buffer carbon layer.•Sodium storage performance for the composites was investigated.•TiO2/MWCNTs electrode material contributes to excellent electrochemical performance. The superior performance anode material has been the foremost challenge of sodium-ion batteries (SIBs). In this study, we report a facile strategy to synthesis TiO2/multi-walled carbon nanotubes (MWCNTs) composite through sol–gel methods. TiO2 coupled with multi-walled carbon nanotubes (MWCNTs) increases the specific surface area and provides rich interfaces, which is conducting shuttleand transfer of Na+ in the system; the carbon coating as a buffer layer can effectively inhibit the volume expansion during insertion/extractionofNa+ process. When applied as anode material for SIBs, the as-prepared TiO2/MWCNTs delivers high reversible capacities of 226 mAh g−1 after 140 cycles at 0.1 A g−1. The crystal structure and morphology of TiO2/MWCNTs materials were also characterized by XRD, TEM, and SEM.