NDLI: Facile construction of nanoscale laminated Na3V2(PO4)3 for a high-performance sodium ion battery cathode

Content Provider	Royal Society of Chemistry (RSC)
Author	Liu, Wanqiu Li, Xianfeng Zheng, Qiong Zhang, Hongzhang Feng, Kai Zhang, Huamin
Copyright Year	2016
Abstract	A novel facile construction of nanoscale laminated Na3V2(PO4)3 for a high-performance sodium ion battery (SIB) cathode is proposed. In the synthesis process, a crystallized intermediate precursor with low-cost raw materials is prepared by introducing a high temperature molten-state NH3 thermal-reduction process, which acts as a reaction template to control the crystal growth and the final morphology of Na3V2(PO4)3. The as-synthesized nanoscale laminated Na3V2(PO4)3 possesses continuous Na+/electron pathways, large electrode/electrolyte contact area and sufficient carbon coating, resulting in fast Na+ extraction/insertion and electron transport during the electrochemical reaction process, which is shown to achieve excellent rate capability and decent cycling stability. At a low rate of 0.5C, the discharge specific capacity is approximately 117 mA h g−1, which is very close to its theoretical specific capacity, and there is only a very minor capacity fade after continuous 250 cycles at 2C. Even at 50C, the discharge specific capacity is as high as 80 mA h g−1 and the reversible capacity retention after 3000 cycles remains more than 78%. In addition, the X-NVP cathode shows stable cycling performance and acceptable rate performance with a reversible capacity of 110 mA h g−1 at 0.2C at a low temperature of −20 °C, which has rarely been reported previously in the SIB field. The intermediate precursor prepared by the high temperature molten-state thermal-reduction method, acting as the reaction template of the final product, provides a facile and economic solution for the synthesis of high-performance SIB cathode materials.
Starting Page	19170
Ending Page	19178
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	48
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta07109k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	SIB Sodium Ion Cathode Ammonia Electrode Electrolyte Carbon Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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