Lithium storage in hollow spherical ZnFe2O4 as anode materials for lithium ion batteries

被引：230

作者：

Guo, Xianwei ^{[1
]}

Lu, Xia ^{[1
]}

Fang, Xiangpeng ^{[1
]}

Mao, Ya ^{[1
]}

Wang, Zhaoxiang ^{[1
]}

Chen, Liquan ^{[1
]}

Xu, Xiaoxue ^{[2
]}

Yang, Hong ^{[2
]}

Liu, Yinong ^{[2
]}

机构：

[1] Chinese Acad Sci, Lab Solid State Ion, Inst Phys, Beijing 100190, Peoples R China

[2] Univ Western Australia, Lab Funct Mat, Sch Mech Engn, Crawley, WA 6009, Australia

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 06期

基金：

美国国家科学基金会;

关键词：

Hollow microspheres; Lithium ion battery; Phase transitions; Hierarchical; ZnFe2O4; NANOMATERIALS; ELECTRODES; COFE2O4; FILMS;

D O I：

10.1016/j.elecom.2010.04.003

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Hollow microspheres composed of phase-pure ZnFe2O4 nanoparticles (hierarchically structured) have been prepared by hydrothermal reaction. The unique hollow spherical structure significantly increases the specific capacity and improves capacity retention of this material. The product of each phase transition during initial discharge (2nFe(2)O(4) <-> Li0.5ZnFe2O4 <-> Li2ZnFe2O4 -> Li2O + Li-Zn + Fe) and their structural reversibility are recognized by X-ray diffraction and electrochemical characterization. The products of the deeply discharged (Li-Zn alloy and Fe) and recharged materials (Fe2O3) were clarified based on high resolution transmission electron microscopic technique and first-principle calculations. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：847 / 850

页数：4

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