A feasibility study on SnO2/NiFe2O4 nanocomposites as anodes for Li ion batteries

被引：18

作者：

Balaji, S. ^{[1
]}

Vasuki, R. ^{[2
]}

Mutharasu, D. ^{[3
]}

机构：

[1] Thiagarajar Coll Engn, Dept Chem, Madurai 625015, Tamil Nadu, India

[2] Thiagarajar Coll Engn, Dept Phys, Madurai 625015, Tamil Nadu, India

[3] Univ Sains Malaysia, Sch Phys, George Town 11800, Malaysia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 554卷

关键词：

Electrode materials; Atomic force microscopy; Electrochemical impedance spectroscopy; Scanning electron microscopy; X-ray diffraction; Thermal analysis; ELECTRODE MATERIALS; NEGATIVE-ELECTRODE; LITHIUM; STATE;

D O I：

10.1016/j.jallcom.2012.11.151

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The SnO2/NiFe2O4 nanocomposite samples with varying concentration of SnO2 such as 5 wt.% and 10 wt.% were synthesized via urea assisted combustion synthesis. The kinetics of the combustion reactions were studied using thermo gravimetry analysis and from which the compound formation temperature of all the samples were observed to be below 400 degrees C. From the morphological analysis the grain size of NiFe2O4, 5 wt.% SnO2/NiFe2O4 and 10 wt.% SnO2/NiFe2O4 samples were observed to be around 1.7, 2.3 and 3.5 mu m. The chrono potentiometry analyses of the samples were performed against lithium metal electrode. The capacity retention was found to be higher for composite with 10 wt.% SnO2. The discharge capacity of 10 wt.% SnO2 sample with respect to Li metal and LiMn2O4 electrode was observed to be around 980 mA h/g and 138 mA h/g respectively. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：25 / 31

页数：7

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