Layered Na[Ni1/3Fe1/3Mn1/3]O2 cathodes for Na-ion battery application

被引：429
|
作者：
Kim, Donghan [1 ]
Lee, Eungje [1 ]
Slater, Michael [1 ]
Lu, Wenquan [1 ]
Rood, Shawn [1 ]
Johnson, Christopher S. [1 ]
机构：
[1] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 18卷
关键词：
Sodium ion batteries; Na-ion; Metal oxide; Layered electrodes; Carbon; ELECTROCHEMICAL INTERCALATION; NAXMNO2; NACRO2; SODIUM;
D O I：
10.1016/j.elecom.2012.02.020
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Na-ion batteries were tested with layered Na(Ni1/3Fe1/3Mn1/3)O-2 cathodes and carbon anodes in a sodium-salt containing organic ester carbonate electrolyte. Layered single phase Na(Ni1/3Fe1/3Mn1/3)O-2 was synthesized from solid-state reaction using a (Ni1/3Fe1/3Mn1/3)C2O4 oxalate precursor and Na2CO3 fired at 850 degrees C with slow-cooling. The Na-ion NayC/Na1-y(Ni1/3Fe1/3Mn1/3)O-2 cell had an average voltage of similar to 2.75 V. modest capacity of 100 mA h g(-1) for 150 cycles (1.5-4.0 V), and a capacity of 94 tnA h g(-1) at a 1 degrees C rate. X-ray diffraction (XRD) data of extracted cycled electrodes were used to characterize material stability and phases formed upon cycling. It was found that Na1-y(Ni1/3Fe1/3Mn1/3)O-2 (0 <= y <= 0.46) maintains a layered structure with good crystallinity over 150 cycles. These results bode well for the development and optimization of rechargeable Na-ion batteries. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 69
页数：4
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