Journal article
Authors list: Flores-Gonzalez, Nicolas; Minafra, Nicolo; Dewald, Georg; Reardon, Hazel; Smith, Ronald, I; Adams, Stefan; Zeier, Wolfgang G.; Gregory, Duncan H.
Publication year: 2021
Pages: 652-657
Journal: ACS Materials Letters
Volume number: 3
Issue number: 5
eISSN: 2639-4979
Open access status: Hybrid
DOI Link: https://doi.org/10.1021/acsmaterialslett.1c00055
Publisher: 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.
Citation Styles
Harvard Citation style: 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 Citation style: 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
