FLUX SYNTHESIS OF Na0.44MnO2 NANORIBBONS AND THEIR ELECTROCHEMICAL PROPERTIES FOR Na-ION BATTERIES

被引：25

作者：

Zhao, Liwei ^{[1
,2
]}

Ni, Jiangfeng ^{[1
]}

Wang, Haibo ^{[1
]}

Gao, Lijun ^{[1
]}

机构：

[1] Soochow Univ, Sch Energy Chem Engn & Mat Sci, Suzhou 215006, Peoples R China

[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215006, Peoples R China

来源：

FUNCTIONAL MATERIALS LETTERS | 2013年 / 6卷 / 02期

关键词：

Sodium ion batteries; sodium manganese oxides; nanoribbon; electrochemical properties; SPHERICAL LIFEPO4 PARTICLES; SODIUM; NANOWIRES; ELECTROLYTE; COMPOSITE; CATHODE;

D O I：

10.1142/S1793604713500124

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Well-crystallized Na0.44MnO2 is readily synthesized via a facile NaCl-flux reaction at 850 degrees C for 5 h. The Na0.44MnO2 material exhibits a well-defined nanoribbon structure with dimension of 50-100 nm in thickness and 200-500 nm in width. Electrochemical properties of as-prepared Na0.44MnO2 are thoroughly investigated on assembled nonaqueous Na0.44MnO2//Na cells using cyclic voltammetry, galvanostatic test, and electrochemical impedance spectroscopy. The results show that the Na0.44MnO2 nanoribbon material can deliver a high capacity of 106 mAh g(-1) with stable cycling performance over 40 cycles. In addition, it exhibits a favorable rate capability, delivering a capacity of 90 mAh g(-1) at a rate of 1 C. The high capacity retention combined with acceptable rate capability makes the Na-0.44MnO2 a promising electrode material for advanced Na-ion batteries.

引用

页数：5

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