• 文献标题:   Design of NaTi2(PO4)(3) nanocrystals embedded in N-doped graphene sheets for sodium-ion battery anode with superior electrochemical performance
  • 文献类型:   Article
  • 作  者:   HU YS, MA X, GUO P, JAEGER F, WANG ZH
  • 作者关键词:   sodiumion battery, nati2 po4 3 anode, ndoped graphene, nanocomposite, sodium storage performance
  • 出版物名称:   CERAMICS INTERNATIONAL
  • ISSN:   0272-8842 EI 1873-3956
  • 通讯作者地址:   Southwest Petr Univ
  • 被引频次:   11
  • DOI:   10.1016/j.ceramint.2017.06.098
  • 出版年:   2017

▎ 摘  要

NASICON-structured NaTi2(PO4)(3) has been investigated as a promising anode for energy storage in view of high Na+ conductivity and low cost. However, the sodium storage property of NaTi2(PO4)(3) still needs further improvements. Herein, we report the design and fabrication of NaTi2(PO4)(3) particles embedded in N-doped graphene sheets for the first time. In this composite, the nanosized NaTi2(PO4)(3) and N-doped graphene construct a 2D conductive network which significantly facilitates the transport of electron and ion. Thus, the anode shows outstanding electrochemical performances in terms of high specific capacity (129.3 mA h g(-1) at 0.1 C), superior rate capability (95.6 mA h g(-1) at 10 C) and stable cycling property (capacity retention of about 88.6% over 200 cycles at 20 C). This novel design provides a potential pathway for improving the sodium storage performance of NaTi2(PO4)(3)anode in sodium-ion battery.