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

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

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 journal › Conference article › peer-review

Abstract

A new process has been developed for the synthesis of well-crystallized Li-Mn-O spinels with a homogeneous composition Li[Li_xMn_2-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/Li_1+xMn_2-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 language	English
Pages (from-to)	257-262
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	496
Publication status	Published - 1998
Externally published	Yes
Event	Proceedings of the 1998 MRS Fall Symposium - Boston, MA, USA Duration: Dec 1 1997 → Dec 5 1997

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
General Materials Science

Cite this

@article{43010fa6d92244f8a917c5f76f23c02d,

title = "Novel synthesis process and characterization of Li-Mn-O spinels for rechargeable lithium batteries",

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.",

author = "Toshimi Takada and Hirotoshi Enoki and Etsuo Akiba and Takenori Ishizu and Tatsuo Horiba",

year = "1998",

language = "English",

volume = "496",

pages = "257--262",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Proceedings of the 1998 MRS Fall Symposium ; Conference date: 01-12-1997 Through 05-12-1997",

}

TY - JOUR

T1 - Novel synthesis process and characterization of Li-Mn-O spinels for rechargeable lithium batteries

AU - Takada, Toshimi

AU - Enoki, Hirotoshi

AU - Akiba, Etsuo

AU - Ishizu, Takenori

AU - Horiba, Tatsuo

PY - 1998

Y1 - 1998

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0031632029

UR - https://www.scopus.com/pages/publications/0031632029#tab=citedBy

M3 - Conference article

AN - SCOPUS:0031632029

SN - 0272-9172

VL - 496

SP - 257

EP - 262

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1998 MRS Fall Symposium

Y2 - 1 December 1997 through 5 December 1997

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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