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Ionics

, Volume 25, Issue 7, pp 3041–3050 | Cite as

A facile strategy to upgrade electrochemical performances of LiEuTiO4 by surface modification derived from pyrolysis of urea

  • Yixin Chen
  • Decheng Zhu
  • Chongxing Ji
  • Xianyu Zhu
  • Yanhui Xu
  • Decheng LiEmail author
Original Paper
  • 101 Downloads

Abstract

A facile strategy was proposed to improve electrochemical performances of LiEuTiO4 by surface modification via pyrolysis of urea at a rather low temperature of 400 °C in N2 atmosphere. The modified LiEuTiO4 exhibited excellent electrochemical performances, including high capacity (166.3 mA h g−1 at 100 mA g−1 at 1st cycle), high rate capability (129.4 mA h g−1 at 1600 mA g−1), and long cyclic stability (149.8 mA h g−1 after 650 cycles at 500 mA g−1). The effects of surface modification on structure and electrochemical performances were extensively studied. SEM and TEM results indicated the pyrolysis of urea surface modification which successfully lead to the formation of a nitrogen–carbon co-existed coating layer. XPS analysis confirmed the presence of N-doped carbon and TiN, which were attributed to remarkable reduction of the polarization and enhancement of the conductivity of LiEuTiO4.

Keywords

Lithium-ion battery Anode material Rare earth Titanium-based material surface modification 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11581_2019_2864_MOESM1_ESM.doc (386 kb)
ESM 1 (DOC 386 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Yixin Chen
    • 1
  • Decheng Zhu
    • 1
  • Chongxing Ji
    • 1
  • Xianyu Zhu
    • 1
  • Yanhui Xu
    • 1
  • Decheng Li
    • 1
    Email author
  1. 1.College of EnergySoochow UniversitySuzhouChina

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