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https://apo.ansto.gov.au/dspace/handle/10238/11275| Title: | A long cycle-life high-voltage spinel lithium-ion battery electrode achieved by site-selective doping |
| Authors: | Liang, GM Wu, ZB Didier, C Zhang, WC Cuan, J Li, BH Ko, KY Hung, PY Lu, CZ Chen, YZ Leniec, G Kaczmarek, SM Johanssen, B Thomsen, L Peterson, VK Pang, WK Guo, ZP |
| Keywords: | Electric potential Energy density Spinels Cathodes Lithium ions Electric batteries Crystal doping |
| Issue Date: | 23-Mar-2020 |
| Publisher: | John Wiley & Sons, Inc |
| Citation: | Liang, G., Wu, Z., Didier, C., Zhang, W., Cuan, J., Li, B., Ko, K.-Y., Hung, P.-Y., Lu, C.-Z., Chen, Y., Leniec, G., Kaczmarek, S. M., Johanssen, B., Thomsen, L., Peterson, V. K., Pang, W.K. & 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 |
| 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 Fdurn:x-wiley:14337851:media:anie202001454:anie202001454-math-0001 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. © 2020 Wiley-VCH Verlag GmbH & Co |
| URI: | https://doi.org/10.1002/anie.202001454 https://apo.ansto.gov.au/dspace/handle/10238/11275 |
| ISSN: | 1521-3773 |
| Appears in Collections: | Journal Articles |
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