Synthesis and materials characterization of Li2MnO3-LiCrO2 system nanocomposite electrode materials

C. W. Park; S. H. Kim; I. Ruth Mangani; J. H. Lee; S. Boo; J. Kim

doi:10.1016/j.materresbull.2006.09.026

Synthesis and materials characterization of Li₂MnO₃-LiCrO₂ system nanocomposite electrode materials

C. W. Park, S. H. Kim, I. Ruth Mangani, J. H. Lee, S. Boo, J. Kim

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

A series of Li[Cr_xLi_(1-x)/3Mn_2(1-x)/3]O₂, (0.2 ≤ x ≤ 0.4) with nanocomposite structures was synthesized by a solution method with subsequent quenching. The sample structures were investigated by X-ray diffraction (Rietveld refinement), electron diffraction and HRTEM. According to co-indexed electron diffraction patterns and HRTEM images, Li[Cr_0.211Li_0.268Mn_0.520]O₂ was found to be composed of solid solution powders and Li[Cr_0.290Li_0.240Mn_0.470]O₂ and Li[Cr_0.338Li_0.225Mn_0.436]O₂ of nanocomposite powders indexed in monoclinic and hexagonal structure. Among the three compounds, the nanocomposite Li[Cr_0.290Li_0.240Mn_0.470]O₂ cathode prevented spinel-like structural transformation during cycling and delivered a good reversible capacity of about 195 mAh/g.

Original language	English
Pages (from-to)	1374-1383
Number of pages	10
Journal	Materials Research Bulletin
Volume	42
Issue number	7
DOIs	https://doi.org/10.1016/j.materresbull.2006.09.026
State	Published - 3 Jul 2007

Keywords

A. Layered compound

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10.1016/j.materresbull.2006.09.026

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title = "Synthesis and materials characterization of Li2MnO3-LiCrO2 system nanocomposite electrode materials",

abstract = "A series of Li[CrxLi(1-x)/3Mn2(1-x)/3]O2, (0.2 ≤ x ≤ 0.4) with nanocomposite structures was synthesized by a solution method with subsequent quenching. The sample structures were investigated by X-ray diffraction (Rietveld refinement), electron diffraction and HRTEM. According to co-indexed electron diffraction patterns and HRTEM images, Li[Cr0.211Li0.268Mn0.520]O2 was found to be composed of solid solution powders and Li[Cr0.290Li0.240Mn0.470]O2 and Li[Cr0.338Li0.225Mn0.436]O2 of nanocomposite powders indexed in monoclinic and hexagonal structure. Among the three compounds, the nanocomposite Li[Cr0.290Li0.240Mn0.470]O2 cathode prevented spinel-like structural transformation during cycling and delivered a good reversible capacity of about 195 mAh/g.",

keywords = "A. Layered compound",

author = "Park, {C. W.} and Kim, {S. H.} and Mangani, {I. Ruth} and Lee, {J. H.} and S. Boo and J. Kim",

year = "2007",

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doi = "10.1016/j.materresbull.2006.09.026",

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TY - JOUR

T1 - Synthesis and materials characterization of Li2MnO3-LiCrO2 system nanocomposite electrode materials

AU - Park, C. W.

AU - Kim, S. H.

AU - Mangani, I. Ruth

AU - Lee, J. H.

AU - Boo, S.

AU - Kim, J.

PY - 2007/7/3

Y1 - 2007/7/3

N2 - A series of Li[CrxLi(1-x)/3Mn2(1-x)/3]O2, (0.2 ≤ x ≤ 0.4) with nanocomposite structures was synthesized by a solution method with subsequent quenching. The sample structures were investigated by X-ray diffraction (Rietveld refinement), electron diffraction and HRTEM. According to co-indexed electron diffraction patterns and HRTEM images, Li[Cr0.211Li0.268Mn0.520]O2 was found to be composed of solid solution powders and Li[Cr0.290Li0.240Mn0.470]O2 and Li[Cr0.338Li0.225Mn0.436]O2 of nanocomposite powders indexed in monoclinic and hexagonal structure. Among the three compounds, the nanocomposite Li[Cr0.290Li0.240Mn0.470]O2 cathode prevented spinel-like structural transformation during cycling and delivered a good reversible capacity of about 195 mAh/g.

AB - A series of Li[CrxLi(1-x)/3Mn2(1-x)/3]O2, (0.2 ≤ x ≤ 0.4) with nanocomposite structures was synthesized by a solution method with subsequent quenching. The sample structures were investigated by X-ray diffraction (Rietveld refinement), electron diffraction and HRTEM. According to co-indexed electron diffraction patterns and HRTEM images, Li[Cr0.211Li0.268Mn0.520]O2 was found to be composed of solid solution powders and Li[Cr0.290Li0.240Mn0.470]O2 and Li[Cr0.338Li0.225Mn0.436]O2 of nanocomposite powders indexed in monoclinic and hexagonal structure. Among the three compounds, the nanocomposite Li[Cr0.290Li0.240Mn0.470]O2 cathode prevented spinel-like structural transformation during cycling and delivered a good reversible capacity of about 195 mAh/g.

KW - A. Layered compound

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DO - 10.1016/j.materresbull.2006.09.026

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SN - 0025-5408

VL - 42

SP - 1374

EP - 1383

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 7

ER -

Synthesis and materials characterization of Li₂MnO₃-LiCrO₂ system nanocomposite electrode materials

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Keywords

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