Facile synthesis of cookies-shaped LiV3O8 cathode materials with good cycling performance for lithium-ion batteries

被引：17
作者：
Huang, S. [1 ]
Wang, X. L. [1 ]
Lu, Y. [1 ]
Jian, X. M. [1 ]
Zhao, X. Y. [1 ]
Tang, H. [1 ]
Cai, J. B. [1 ]
Gu, C. D. [1 ]
Tu, J. P. [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Silicon Mat, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 584卷
关键词：
Lithium trivanadium oxide; Structural stability; Cycling performance; Lithium-ion battery; FREEZE-DRYING SYNTHESIS; ELECTROCHEMICAL PROPERTIES; ENHANCED PERFORMANCE; ANODE MATERIALS; NANOSHEETS; COMPOSITE; ELECTRODE;
D O I：
10.1016/j.jallcom.2013.09.034
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：
Cookies-shaped LiV3O8 materials were successfully synthesized by a facile ethylene glycol-assisted sol-gel method. The LiV3O8 compound fabricated at 550 degrees C delivers an initial specific discharge capacity of 255.2 mAh g(-1) between 2.0 and 4.0 V at a current density of 50 mA g(-1), and possesses a capacity retention of 90.2% after 50 cycles and up to 85% at a current density of 120 mA g(-1) after 100 cycles. Furthermore, the compound with a proper particle size and high crystallinity also shows high electrochemical reversibility and structural stability, leading good rate capability. By analysis of inductively coupled plasma emission spectrometer (ICP), the cookies-like LiV3O8 has very little dissolution of vanadium in the electrolyte after 100 cycles, indicating that the well-formed crystal can protect the structure damage to some degree during cycling. (C) 2013 Elsevier B. V. All rights reserved.
引用
收藏
页码：41 / 46
页数：6
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