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Evaluating lithium diffusion mechanisms in the complex spinel LiNiGeO.

08:00 EDT 11th October 2019 | BioPortfolio

Summary of "Evaluating lithium diffusion mechanisms in the complex spinel LiNiGeO."

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.

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Name: Physical chemistry chemical physics : PCCP
ISSN: 1463-9084
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