L-Serine-Assisted Synthesis of Superparamagnetic Fe3O4 Nanocubes for Lithuium Ion Batteries

被引：71

作者：

Cao, Huaqiang ^{[1
]}

Liang, Renlong ^{[1
,2
]}

Qian, Dong ^{[2
]}

Shao, Jin ^{[3
]}

Qu, Meizhen ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China

[3] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 50期

基金：

国家高技术研究发展计划(863计划);

关键词：

MAGNETIC-PROPERTIES; ANODE MATERIAL; NANOPARTICLES; TRANSITION; SUPERHYDROPHOBICITY; NANOCRYSTALS; ALPHA-FE2O3; NANOWIRES; ELECTRODE; CAPACITY;

D O I：

10.1021/jp2096482

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Monodisperse superparamagnetic Fe3O4 nanocubes with the edge length up to approximately 16 nm were synthesized by using a biomolecule-assisted solvothermal approach. The Fe3O4 nanocubes are characterized by X-ray powder diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and high-resolution transmission electron microscopy. The magnetic properties of the Fe3O4 nanocubes are studied by zero-field cooling (ZFC) and field cooling (FC) procedures, i.e., M-T and M-H curves. The electrochemical behavior of the Fe3O4 nanocubes was tested in lithium ion batteries, which presents high specific capacitance of 695.1 mA center dot h/g at a current rate of 0.2 C, higher than that of commonly used graphite electrode (372 mA center dot h/g), as well as excellent Coulombic efficiency of above 95% after the 11th cycle in the subsequent cycles.

引用

页码：24688 / 24695

页数：8

共 68 条

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