NaTiO2: a layered anode material for sodium-ion batteries

被引：268
作者：
Wu, Di [1 ]
Li, Xin [2 ]
Xu, Bo [2 ]
Twu, Nancy [2 ]
Liu, Lei [2 ]
Ceder, Gerbrand [2 ]
机构：
[1] MIT, Dept Mech Engn, Cambridge, MA 01239 USA
[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 01239 USA
来源：
ENERGY & ENVIRONMENTAL SCIENCE | 2015年 / 8卷 / 01期
关键词：
ELECTROCHEMICAL INTERCALATION; NEGATIVE ELECTRODES; PHASE-DIAGRAM; SUPERSTRUCTURE; BRONZES; SYSTEMS; ENERGY; DEINTERCALATION; MECHANISM; DIFFUSION;
D O I：
10.1039/c4ee03045a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report on layered NaTiO2 as a potential anode material for Na-ion batteries. The material is prepared from only earth-abundant elements, delivers 152 mA h g(-1) of reversible capacity at C/10 rate, shows excellent cyclability with capacity retention over 98% after 60 cycles, and high rate capability. Furthermore, in situ X-ray diffraction analysis reveals a reversible O3-O'3 phase transition, including an unusual lattice parameter variation coupled to complicated Na vacancy orderings in a series of 2nd order phase transitions.
引用
收藏
页码：195 / 202
页数：8
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