Synthesis and electrochemical properties of Ag0.333V2O5-V2O5 core-shell nanobelts for rechargeable lithium batteries

被引：13
|
作者：
Peng, Hongrui [1 ]
Wu, Weizhong [1 ]
Zhang, Chuanqin [1 ]
Li, Guicun [1 ]
Chen, Kezheng [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Lab Funct & Biol Nanomat, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 23-24期
基金：
中国国家自然科学基金;
关键词：
Crystal growth; Electrical properties; Lithium batteries; Ag0.333V2O5; Nanobelts; Nanomaterials; VANADIUM-OXIDE; V2O5; INSERTION; HOST;
D O I：
10.1016/j.matlet.2011.07.074
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ag0.333V2O5-V2O5 core-shell nanobelts have been synthesized by a facile homogeneous reaction between peroxovanadic acid and AgNO3 under hydrothermal conditions. The formation of Ag0.333V2O5-V2O5 core-shell nanobelts is time dependent: Ag0.333V2O5 nanobelts are formed firstly, and then V2O5 grows on the Ag0.333V2O5 surfaces. The core-shell nanobelts exhibit stable lithium-ion intercalation/deintercalation reversibility and deliver specific discharge capacities of around 276.4 mAhg(-1) after 50 cycles at a rate of 0.25 Ag-1. The value is lowered to 228 mAhg(-1) at 0.5 Ag-1, and 147.2 mAhg(-1) at 0.75 Ag-1. The good electrochemical properties of Ag0.333V2O5-V2O5 core-shell nanobelts make them a promising candidate as a cathode material for rechargeable lithium batteries. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：3436 / 3439
页数：4
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