Hierarchical porous Ti2Nb10O29 nanospheres as superior anode materials for lithium ion storage. Issue 40 (4th October 2017)

• Record Type: Journal Article
• Authors: Xia, Xinhui; Deng, Shengjue; Feng, Shangshen; Wu, Jianbo; Tu, Jiangping
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 40(2017)
• Page Start: 21134
• Page End: 21139
• Publication Date: 2017-10-04
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta07229e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Hierarchical porous Ti2 Nb10 O29 nanospheres prepared by a facile solvothermal method are demonstrated with superior Li-ion storage performance with high capacities and good cycling life. Abstract : Lithium ions batteries (LIBs) with high power/energy densities largely rely on the innovation of electrode materials. Herein, for the first time, we rationally construct novel titanium niobium oxide (Ti2 Nb10 O29, TNO) nanospheres with a three-dimensional porous structure consisting of cross-linked nanoparticles by a simple solvothermal method combined with heat treatment. Compared to bulk TNO microrods, the obtained TNO nanospheres show a larger specific surface area and richer/shorter transfer channels for ions/electrons. Owing to these advantages, the TNO nanosphere electrode exhibits noticeable exceptional electrochemical performance with superior high-rate capability (241 mA h g −1 at 10C, and 208 mA h g −1 at 20C) and ultra-long life with a capacity of 215 mA h g −1 after 500 cycles at 10C, much better than the TNO microrod counterparts. Our findings may pave a new way for the design/fabrication of the state-of-the-art electrodes for electrochemical energy storage.