Skip to main content
placeholder image

Lanthanide doping induced electrochemical enhancement of Na2Ti3O7 anodes for sodium-ion batteries

Journal Article


Download full-text (Open Access)

Abstract


  • Na2Ti3O7 is considered as a promising anode material for sodium ion batteries (SIBs) due to its excellent high-rate performance compared with hard carbons. However, the electrochemical performance of Na2Ti3O7 is heavily limited by its low electrical conductivity. In this study, we synthesized a series of lanthanide (Ln = La, Ce, Nd, Sm, Gd, Er, and Yb) doped microsized Na2Ti3O7 anode materials and systematically studied the electrochemical performance. Compared with pristine Na2Ti3O7, all the doped samples show superior electrochemical performance. Especially, the Yb3+ doped sample not only delivers a high reversible capacity of 89.4 mA h g−1 at 30C, but also maintains 71.6 mA h g−1 at 5C after 1600 cycles, nearly twice that of pristine Na2Ti3O7. It is found for the first time that the enhancement in doped samples is attributed to the introduction of lanthanides which induces lattice distortion and oxygen vacancies.

Authors


  •   Zhao, Hongyang (external author)
  •   Yin, Zongyou (external author)
  •   Zhou, Bo (external author)
  •   He, Gang (external author)
  •   Guo, Zaiping
  •   Du, Yaping (external author)

Publication Date


  • 2018

Citation


  • Xia, J., Zhao, H., Pang, W., Yin, Z., Zhou, B., He, G., Guo, Z. & Du, Y. (2018). Lanthanide doping induced electrochemical enhancement of Na2Ti3O7 anodes for sodium-ion batteries. Chemical Science, 9 (14), 3421-3425.

Scopus Eid


  • 2-s2.0-85045034874

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4127&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3077

Number Of Pages


  • 4

Start Page


  • 3421

End Page


  • 3425

Volume


  • 9

Issue


  • 14

Place Of Publication


  • United Kingdom

Abstract


  • Na2Ti3O7 is considered as a promising anode material for sodium ion batteries (SIBs) due to its excellent high-rate performance compared with hard carbons. However, the electrochemical performance of Na2Ti3O7 is heavily limited by its low electrical conductivity. In this study, we synthesized a series of lanthanide (Ln = La, Ce, Nd, Sm, Gd, Er, and Yb) doped microsized Na2Ti3O7 anode materials and systematically studied the electrochemical performance. Compared with pristine Na2Ti3O7, all the doped samples show superior electrochemical performance. Especially, the Yb3+ doped sample not only delivers a high reversible capacity of 89.4 mA h g−1 at 30C, but also maintains 71.6 mA h g−1 at 5C after 1600 cycles, nearly twice that of pristine Na2Ti3O7. It is found for the first time that the enhancement in doped samples is attributed to the introduction of lanthanides which induces lattice distortion and oxygen vacancies.

Authors


  •   Zhao, Hongyang (external author)
  •   Yin, Zongyou (external author)
  •   Zhou, Bo (external author)
  •   He, Gang (external author)
  •   Guo, Zaiping
  •   Du, Yaping (external author)

Publication Date


  • 2018

Citation


  • Xia, J., Zhao, H., Pang, W., Yin, Z., Zhou, B., He, G., Guo, Z. & Du, Y. (2018). Lanthanide doping induced electrochemical enhancement of Na2Ti3O7 anodes for sodium-ion batteries. Chemical Science, 9 (14), 3421-3425.

Scopus Eid


  • 2-s2.0-85045034874

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4127&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3077

Number Of Pages


  • 4

Start Page


  • 3421

End Page


  • 3425

Volume


  • 9

Issue


  • 14

Place Of Publication


  • United Kingdom