{001} Facets Exposed Anatase TiO 2 Nanosheets and Reduced Graphene Oxide Composite Anodes for High Performance Na-Ion Batteries

• Published in: Meeting abstracts (Electrochemical Society) Vol. MA2016-02; no. 5; p. 829
• Main Authors: Mei, Yueni, Huang, Yunhui, Hu, Xianluo
• Format: Journal Article
• Language: English
• Published: 01.09.2016
• ISSN: 2151-2043; 2151-2035
• DOI: 10.1149/MA2016-02/5/829

Lithium ion batteries (LIBs) have been widely applied in energy storage applications such as electric vehicles and portable devices, pushing up the price of lithium compounds and making lithium resources more limited. Owing to the high abundance, low cost and similar redox potential compared to lithium, sodium becomes a suitable candidate. Up to now, a variety of cathode materials have been investigated for sodium ion batteries (NIBs). However, finding suitable anode materials remains a huge challenge. Graphite, which has been employed as commercialized anode in LIBs, exhibits poor performance in NIBs (less than 35 mAh g −1 ). Recently, titanium dioxide (TiO 2 ) has been proposed as anode materials for NIBs 1 . TiO 2  has the advantages of low cost and structural stability, which hold great promise for application in NIBs. Here, we report a composite electrode that consists of rGO and anatase TiO 2  nanosheets with exposed high-energy facets as anodes for NIBs. The thin anatase nanosheets with {001} facets exposed were synthesized via a simple hydrothermal route 2 . The as-obtained electrode shows enhanced cycling performance and rate capability. This composite electrode exhibits a specific capacity of ~110 mAh g −1  after 500 cycles at 5C rate. Overall, anatase nanosheets/rGO composite electrode was produced and could provide a possible choice for energy storage applications. 1. C. Chen, Y. Wen, X. Hu, X. Ji, M. Yan, L. Mai, P. Hu, B. Shan and Y. Huang, Nature communications , 2015, 6 , 6929. 2. C. H. Sun, X. H. Yang, J. S. Chen, Z. Li, X. W. Lou, C. Li, S. C. Smith, G. Q. Lu and H. G. Yang, Chemical communications , 2010, 46 , 6129-6131. Figure 1