Hydrogenation Driven Conductive Na2Ti3O7 Nanoarrays as Robust Binder-Free Anodes for Sodium-Ion Batteries

被引：240

作者：

Fu, Shidong ^{[1
]}

Ni, Jiangfeng ^{[1
]}

Xu, Yong ^{[2
]}

Zhang, Qiao ^{[2
]}

Li, Liang ^{[1
]}

机构：

[1] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Coll Phys Optoelect & Energy, CECMP, Suzhou 215006, Peoples R China

[2] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China

来源：

NANO LETTERS | 2016年 / 16卷 / 07期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Sodium-ion battery; hydrogenation; nanoarray; rate capability; ENERGY-STORAGE; HIGH-PERFORMANCE; NANOTUBE ARRAYS; TIO2; NANOTUBE; NA; ELECTRODE; SUPERCAPACITORS; TRANSPORT; NANOWIRES; DEVICES;

D O I：

10.1021/acs.nanolett.6b01805

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：4544 / 4551

页数：8

共 45 条

[1] INNER AND OUTER ACTIVE SURFACE OF RUO2 ELECTRODES [J].