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

Journal Article


Abstract


  • © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 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.

Authors


  •   Liang, Gemeng (external author)
  •   Wu, Zhibin (external author)
  •   Didier, Christophe R.
  •   Zhang, Wenchao
  •   Li, Baohua (external author)
  •   Ko, Kuan-Yu (external author)
  •   Hung, Po (external author)
  •   Lu, Cheng (external author)
  •   Chen, Yuanzhen (external author)
  •   Leniec, Grzegorz (external author)
  •   Kaczmarek, S¿awomir (external author)
  •   Johannessen, Bernt (external author)
  •   Thomsen, Lars (external author)
  •   Peterson, Vanessa K. (external author)
  •   Pang, Wei Kong.
  •   Guo, Zaiping

Publication Date


  • 2020

Citation


  • Liang, G., Wu, Z., Didier, C., Zhang, W., Cuan, J., Li, B., Ko, K., Hung, P., Lu, C., Chen, Y., Leniec, G., Kaczmarek, S., Johannessen, B., Thomsen, L., Peterson, V., Pang, W. & Guo, Z. (2020). A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping. Angewandte Chemie - International Edition,

Scopus Eid


  • 2-s2.0-85083431331

Place Of Publication


  • Germany

Abstract


  • © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 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.

Authors


  •   Liang, Gemeng (external author)
  •   Wu, Zhibin (external author)
  •   Didier, Christophe R.
  •   Zhang, Wenchao
  •   Li, Baohua (external author)
  •   Ko, Kuan-Yu (external author)
  •   Hung, Po (external author)
  •   Lu, Cheng (external author)
  •   Chen, Yuanzhen (external author)
  •   Leniec, Grzegorz (external author)
  •   Kaczmarek, S¿awomir (external author)
  •   Johannessen, Bernt (external author)
  •   Thomsen, Lars (external author)
  •   Peterson, Vanessa K. (external author)
  •   Pang, Wei Kong.
  •   Guo, Zaiping

Publication Date


  • 2020

Citation


  • Liang, G., Wu, Z., Didier, C., Zhang, W., Cuan, J., Li, B., Ko, K., Hung, P., Lu, C., Chen, Y., Leniec, G., Kaczmarek, S., Johannessen, B., Thomsen, L., Peterson, V., Pang, W. & Guo, Z. (2020). A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping. Angewandte Chemie - International Edition,

Scopus Eid


  • 2-s2.0-85083431331

Place Of Publication


  • Germany