Journalartikel
Autorenliste: Flores-Gonzalez, Nicolas; Minafra, Nicolo; Dewald, Georg; Reardon, Hazel; Smith, Ronald, I; Adams, Stefan; Zeier, Wolfgang G.; Gregory, Duncan H.
Jahr der Veröffentlichung: 2021
Seiten: 652-657
Zeitschrift: ACS Materials Letters
Bandnummer: 3
Heftnummer: 5
eISSN: 2639-4979
Open Access Status: Hybrid
DOI Link: https://doi.org/10.1021/acsmaterialslett.1c00055
Verlag: American Chemical Society
Abstract:
State-of-the-art oxides and sulfides with high Li-ion conductivity and good electrochemical stability are among the most promising candidates for solid-state electrolytes in secondary batteries. Yet emerging halides offer promising alternatives because of their intrinsic low Li+ migration energy barriers, high electrochemical oxidative stability, and beneficial mechanical properties. Mechanochemical synthesis has enabled the characterization of LiAlX4 compounds to be extended and the iodide, LiAlI4, to be synthesized for the first time (monoclinic P2(1)/c, Z = 4; a = 8.0846(1) angstrom; b = 7.4369(1) angstrom; c = 14.8890(2) angstrom; beta = 93.0457(8)degrees). Of the tetrahaloaluminates, LiAlBr4 exhibited the highest ionic conductivity at room temperature (0.033 mS cm(-1)), while LiAlCl4 showed a conductivity of 0.17 mS cm-1 at 333 K, coupled with the highest thermal and oxidative stability. Modeling of the diffusion pathways suggests that the Li-ion transport mechanism in each tetrahaloaluminate is closely related and mediated by both halide polarizability and concerted complex anion motions.
Zitierstile
Harvard-Zitierstil: Flores-Gonzalez, N., Minafra, N., Dewald, G., Reardon, H., Smith, R., Adams, S., et al. (2021) Mechanochemical Synthesis and Structure of Lithium Tetrahaloaluminates, LiAlX4 (X = Cl, Br, I): A Family of Li-Ion Conducting Ternary Halides, ACS Materials Letters, 3(5), pp. 652-657. https://doi.org/10.1021/acsmaterialslett.1c00055
APA-Zitierstil: Flores-Gonzalez, N., Minafra, N., Dewald, G., Reardon, H., Smith, R., Adams, S., Zeier, W., & Gregory, D. (2021). Mechanochemical Synthesis and Structure of Lithium Tetrahaloaluminates, LiAlX4 (X = Cl, Br, I): A Family of Li-Ion Conducting Ternary Halides. ACS Materials Letters. 3(5), 652-657. https://doi.org/10.1021/acsmaterialslett.1c00055
