Evaluating lithium diffusion mechanisms in the complex spinel Li2NiGe3O8
| Autor: | Nik Reeves-McLaren, Whitney L. Schmidt, Daniel Z. C. Martin, Peter J. Baker, Abby R. Haworth, Rebecca Boston, Karen E. Johnston |
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| Rok vydání: | 2019 |
| Předmět: |
Range (particle radiation)
Muon Materials science Diffusion Spinel Analytical chemistry General Physics and Astronomy chemistry.chemical_element Sintering 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion chemistry engineering Lithium Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy |
| Zdroj: | Physical chemistry chemical physics, 2019, Vol.41(21), pp.23111 [Peer Reviewed Journal] |
| Popis: | Lithium-ion diffusion mechanisms in the complex spinel Li2NiGe3O8 have been investigated using solid-state NMR, impedance, and muon spectroscopies. Partial occupancy of migratory interstitial 12d sites is shown to occur at lower temperatures than previously reported. Bulk activation energies for Li+ ion hopping range from 0.43 ± 0.03 eV for powdered samples to 0.53 ± 0.01 eV for samples sintered at 950 °C for 24 h, due to the loss of Li during sintering at elevated temperatures. A lithium diffusion coefficient of 3.89 × 10−12 cm2 s−1 was calculated from muon spectroscopy data for Li2NiGe3O8 at 300 K. |
| Databáze: | OpenAIRE |
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