Porous Na3V2(PO4)3@C nanoparticles enwrapped in three-dimensional graphene for high performance sodium-ion batteries

被引：119
作者：
Fang, Junqi [1 ]
Wang, Suqing [1 ]
Li, Zhitong [1 ]
Chen, Hongbin [1 ]
Xia, Lu [1 ]
Ding, Liangxin [1 ]
Wang, Haihui [1 ,2 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2016年 / 4卷 / 04期
基金：
澳大利亚研究理事会;
关键词：
CARBON-COATED NA3V2(PO4)(3); CATHODE MATERIAL; ANODE MATERIAL; ELECTRODE MATERIAL; ENERGY-STORAGE; CAPACITY; NANOCOMPOSITES; NANOSPHERES; STABILITY; MATRIX;
D O I：
10.1039/c5ta08869k
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：
Porous Na3V2(PO4)(3)@ C nanocomposites enwrapped in a 3D graphene network were prepared using a simple freeze-drying-assisted thermal treatment method. The carbon layer and 3D graphene network provide not only a 3D conductive network but also a double restriction on the aggregation of Na3V2(PO4)(3) particles that have a high crystallinity under high temperature treatment. Due to the high electrochemical activity of the highly crystalline Na3V2(PO4)(3) nanoparticles and 3D conductive network, the novel NVP@C/Gmaterial displays a superior rate capability (76 mA h g(-1) at 60C) and ultra-long cyclability (82% capacity retention for 1500 cycles at 40C) when used in sodium-ion batteries.
引用
收藏
页码：1180 / 1185
页数：6
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