Skip to main content
placeholder image

A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping

Journal Article


Abstract


  • Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd (Formula presented.) m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable electrochemical performance in both half-cells and prototype full-batteries with novel TiNb2O7 counter-electrodes. This work pioneers an atomic-doping engineering strategy for electrode materials that could be extended to other energy materials to create high-performance devices.

UOW Authors


  •   Wu, Zhibin (external author)
  •   Liang, Gemeng (external author)
  •   Didier, Christophe (external author)
  •   Guo, Zaiping
  •   Pang, Wei Kong
  •   Zhang, Wenchao (external author)

Publication Date


  • 2020

Citation


  • Liang, G., Wu, Z., Didier, C., Zhang, W., Cuan, J., Li, B., . . . Guo, Z. (2020). A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping. Angewandte Chemie - International Edition, 59(26), 10594-10602. doi:10.1002/anie.202001454

Scopus Eid


  • 2-s2.0-85083431331

Start Page


  • 10594

End Page


  • 10602

Volume


  • 59

Issue


  • 26

Abstract


  • Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd (Formula presented.) m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable electrochemical performance in both half-cells and prototype full-batteries with novel TiNb2O7 counter-electrodes. This work pioneers an atomic-doping engineering strategy for electrode materials that could be extended to other energy materials to create high-performance devices.

UOW Authors


  •   Wu, Zhibin (external author)
  •   Liang, Gemeng (external author)
  •   Didier, Christophe (external author)
  •   Guo, Zaiping
  •   Pang, Wei Kong
  •   Zhang, Wenchao (external author)

Publication Date


  • 2020

Citation


  • Liang, G., Wu, Z., Didier, C., Zhang, W., Cuan, J., Li, B., . . . Guo, Z. (2020). A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping. Angewandte Chemie - International Edition, 59(26), 10594-10602. doi:10.1002/anie.202001454

Scopus Eid


  • 2-s2.0-85083431331

Start Page


  • 10594

End Page


  • 10602

Volume


  • 59

Issue


  • 26