title: NaAlTi3O8, A Novel Anode Material for Sodium Ion Battery.
abstract: Sodium ion batteries are being considered as an alternative to lithium ion batteries in large-scale energy storage applications owing to the low cost. A novel titanate compound, NaAlTi3O8, was successfully synthesized and tested as a promising anode material for sodium ion batteries. Powder X-ray Diffraction (XRD) and refinement were used to analyze the crystal structure. Electrochemical cycling tests under a C/10 rate between 0.01 - 2.5 V showed that ~83 mAh/g capacity could be achieved in the second cycle, with ~75% of which retained after 100 cycles, which corresponds to 0.75 Na+insertion and extraction. The influence of synthesis conditions on electrochemical performances was investigated and discussed. NaAlTi3O8not only presents a new anode material with low average voltage of ~0.5 V, but also provides a new type of intercalation anode with a crystal structure that differentiates from the anodes that have been reported.
authors.affiliation: The Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
authors.forename: Xuetian
authors.initials: X
authors.lastname: Ma
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Ke
authors.identifier: 0000-0002-6093-429X
authors.initials: K
authors.lastname: An
authors.affiliation: National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA.
authors.forename: Jianming
authors.initials: J
authors.lastname: Bai
authors.affiliation: The Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA. hailong.chen@me.gatech.edu.
authors.forename: Hailong
authors.initials: H
authors.lastname: Chen