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

被引：433

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

页码：66 / 69

页数：4

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