Novel synthesis process and characterization of Li-Mn-O spinels for rechargeable lithium batteries

Toshimi Takada, Hirotoshi Enoki, Etsuo Akiba, Takenori Ishizu, Tatsuo Horiba

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A new process has been developed for the synthesis of well-crystallized Li-Mn-O spinels with a homogeneous composition Li[LixMn2-x]O4 (0.0≤x≤0.333) using the stoichiometry mixtures of lithium acetate and manganese nitrate as starting materials. The crystal structure of these compounds was studied with Rietveld refinements of the X-ray diffraction profiles. The lattice parameter of the spinels shows a strong dependence on the composition and manganese oxidation state. SEM micrographs indicate that the crystallites appear as single crystals. The size of the crystallites are in the range of 0.1-2 μm, depending on the synthesis conditions. Samples with x≤0.125 show good electrode performance for the cell Li/Li1+xMn2-xO4 in the 4 V region, whereas Li4Mn5O12 (x = 0.333) spinels show good cyclability with a rechargeable capacity of over 100 mAh/g in the 3 V region.

Original languageEnglish
Pages (from-to)257-262
Number of pages6
JournalUnknown Journal
Volume496
Publication statusPublished - 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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    Takada, T., Enoki, H., Akiba, E., Ishizu, T., & Horiba, T. (1998). Novel synthesis process and characterization of Li-Mn-O spinels for rechargeable lithium batteries. Unknown Journal, 496, 257-262.