title: Hydrogenation Driven Conductive Na2Ti3O7 Nanoarrays as Robust Binder-Free Anodes for Sodium-Ion Batteries.
abstract: We present a general and rational approach to fabricate highly accessible and affordable sodium-ion battery anodes by engineering three-dimensional hydrogenated Na2Ti3O7 nanoarrays supported on flexible Ti substrates. The hydrogenated Na2Ti3O7 nanoarrays exhibit desirable properties for sodium storage, such as high surface area, high electrical conductivity, and Na(+) diffusivity. The as-obtained nanoarrays demonstrate remarkably stable and robust Na-storage performance when tested as binder-free anodes for sodium-ion battery. They can afford a high reversible (desodiation) capacity of 227 mAh g(-1) and retain a capacity of 65 mAh g(-1) over 10,000 continuous cycles at a high rate of 35 C. Therefore, through this synergy of array architecture and hydrogenation, it is possible to engineer numerous anodes that can reversibly store Na(+) ions in a fast and stable manner.
authors.affiliation: College of Physics, Optoelectronics and Energy, Center for Energy Conversion Materials & Physics (CECMP), The Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215006, P. R. China.
authors.forename: Shidong
authors.initials: S
authors.lastname: Fu
authors.affiliation: College of Physics, Optoelectronics and Energy, Center for Energy Conversion Materials & Physics (CECMP), The Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215006, P. R. China.
authors.forename: Jiangfeng
authors.initials: J
authors.lastname: Ni
authors.affiliation: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano and Soft Materials (FUNSOM), the Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano and Soft Materials (FUNSOM), the Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: College of Physics, Optoelectronics and Energy, Center for Energy Conversion Materials & Physics (CECMP), The Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215006, P. R. China.
authors.forename: Liang
authors.initials: L
authors.lastname: Li
keywords: Sodium-ion battery; hydrogenation; nanoarray; rate capability