Carbon coated Na3V2(PO4)3 as novel electrode material for sodium ion batteries

被引：728

作者：

Jian, Zelang ^{[1
,2
]}

Zhao, Liang ^{[1
]}

Pan, Huilin ^{[1
]}

Hu, Yong-Sheng ^{[1
]}

Li, Hong ^{[1
]}

Chen, Wen ^{[2
]}

Chen, Liquan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 14卷 / 01期

关键词：

Na3V2(PO4)(3); NASICON structure; Carbon coating; Sodium-ion batteries; Cathode; Anode; ANODE MATERIALS; INSERTION; PERFORMANCE; CATHODE;

D O I：

10.1016/j.elecom.2011.11.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A Na3V2(PO4)(3) sample coated uniformly with a layer of 6 nm carbon has been successfully synthesized by a one-step solid state reaction. This material shows two flat voltage plateaus at 3.4 V vs. Na+/Na and 1.63 V vs. Na+/Na in a nonaqueous sodium cell. When the Na3V2(PO4)(3)/C sample is tested as a cathode in a voltage range of 2.7-3.8 V vs. Na+/Na, its initial charge and discharge capacities are 98.6 and 93 inAh/g. The capacity retention of 99% can be achieved after 10 cycles. The electrode shows good cycle performance and moderate rate performance. When it is tested as an anode in a voltage range of 1.0-3.0 V vs. Na+/Na, the initial reversible capacity is 66.3 mAh/g and the capacity of 59 mAh/g can be maintained after 50 cycles. These preliminary results indicate that Na3V2(PO4)(3)/C is a new promising material for sodium ion batteries. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：86 / 89

页数：4

共 23 条

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