Layered (1-x-y)LiNi1/2Mn1/2O2 · x Li[Li1/3Mn2/3] O2 · yLiCoO2 (0≤x = y≤0.3 and x + y = 0.5) cathode materials

Lianqi Zhang; Kazunori Takada; Narumi Ohta; Katsutoshi Fukuda; Minoru Osada; Lianzhou Wang; Takayoshi Sasaki; Mamoru Watanabe

doi:10.1149/1.1829416

Layered (1-x-y)LiNi_1/2Mn_1/2O₂ · x Li[Li_1/3Mn_2/3] O₂ · yLiCoO₂ (0≤x = y≤_0.3 and x + y = 0.5) cathode materials

Lianqi Zhang^*, Kazunori Takada, Narumi Ohta, Katsutoshi Fukuda, Minoru Osada, Lianzhou Wang, Takayoshi Sasaki, Mamoru Watanabe

^*Corresponding author for this work

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

37 Citations (Scopus)

Abstract

An exploration of new cathode materials along the two lines having the nominal compositions of (1 - x - y)LiNi_1/2Mn_1/2O ₂ · x Li[Li_1/3Mn_2/3]O₂ · yLiCoO₂ (0 ≤ x = y ≤ 0.3 and x + y = 0.5) was performed in the phase diagram of LiNi_1/2Mn_1/2O ₂-Li[Li_1/3Mn_2/3]O₂-LiCoO ₂ by a simple solid-state reaction. XRD results identified that all materials are pure phases with layered structure, indicating good structural compatibility between three layered compounds, LiNi_1/2Mn _1/2O₂, Li[Li_1/3Mn_2/3]O₂, and LiCoO₂. Li[Li_1/3Mn_2/3]O₂ and LiCoO₂ contents in these electrode materials presented important effects on structure and electrochemical properties. Our results demonstrated that the suitable structural integration of Li[Li_1/3Mn _2/3]O₂ and LiCoO₂ components into LiNi _1/2Mn_1/2O₂ structure is a practicable way to prepare new electrode materials with the desired electrochemical performances even via a simple solid-state reaction. Among the materials investigated in this work, a reversible capacity of 180-200 mAh/g was obtained for the materials with 0.3 ≤ x + y ≤ 0.6 and excellent cycling performance was observed with a large x (x ≥ 0.25) value in the series of x + y = 0.5.

Original language	English
Journal	Journal of the Electrochemical Society
Volume	152
Issue number	1
DOIs	https://doi.org/10.1149/1.1829416
Publication status	Published - 2005
Externally published	Yes

ASJC Scopus subject areas

Electrochemistry
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1149/1.1829416

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@article{88514102b8944a218e836ad37b2392a2,

title = "Layered (1-x-y)LiNi1/2Mn1/2O2 · x Li[Li1/3Mn2/3] O2 · yLiCoO2 (0≤x = y≤0.3 and x + y = 0.5) cathode materials",

abstract = "An exploration of new cathode materials along the two lines having the nominal compositions of (1 - x - y)LiNi1/2Mn1/2O 2 · x Li[Li1/3Mn2/3]O2 · yLiCoO2 (0 ≤ x = y ≤ 0.3 and x + y = 0.5) was performed in the phase diagram of LiNi1/2Mn1/2O 2-Li[Li1/3Mn2/3]O2-LiCoO 2 by a simple solid-state reaction. XRD results identified that all materials are pure phases with layered structure, indicating good structural compatibility between three layered compounds, LiNi1/2Mn 1/2O2, Li[Li1/3Mn2/3]O2, and LiCoO2. Li[Li1/3Mn2/3]O2 and LiCoO2 contents in these electrode materials presented important effects on structure and electrochemical properties. Our results demonstrated that the suitable structural integration of Li[Li1/3Mn 2/3]O2 and LiCoO2 components into LiNi 1/2Mn1/2O2 structure is a practicable way to prepare new electrode materials with the desired electrochemical performances even via a simple solid-state reaction. Among the materials investigated in this work, a reversible capacity of 180-200 mAh/g was obtained for the materials with 0.3 ≤ x + y ≤ 0.6 and excellent cycling performance was observed with a large x (x ≥ 0.25) value in the series of x + y = 0.5.",

author = "Lianqi Zhang and Kazunori Takada and Narumi Ohta and Katsutoshi Fukuda and Minoru Osada and Lianzhou Wang and Takayoshi Sasaki and Mamoru Watanabe",

year = "2005",

doi = "10.1149/1.1829416",

language = "English",

volume = "152",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "Electrochemical Society, Inc.",

number = "1",

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TY - JOUR

T1 - Layered (1-x-y)LiNi1/2Mn1/2O2 · x Li[Li1/3Mn2/3] O2 · yLiCoO2 (0≤x = y≤0.3 and x + y = 0.5) cathode materials

AU - Zhang, Lianqi

AU - Takada, Kazunori

AU - Ohta, Narumi

AU - Fukuda, Katsutoshi

AU - Osada, Minoru

AU - Wang, Lianzhou

AU - Sasaki, Takayoshi

AU - Watanabe, Mamoru

PY - 2005

Y1 - 2005

N2 - An exploration of new cathode materials along the two lines having the nominal compositions of (1 - x - y)LiNi1/2Mn1/2O 2 · x Li[Li1/3Mn2/3]O2 · yLiCoO2 (0 ≤ x = y ≤ 0.3 and x + y = 0.5) was performed in the phase diagram of LiNi1/2Mn1/2O 2-Li[Li1/3Mn2/3]O2-LiCoO 2 by a simple solid-state reaction. XRD results identified that all materials are pure phases with layered structure, indicating good structural compatibility between three layered compounds, LiNi1/2Mn 1/2O2, Li[Li1/3Mn2/3]O2, and LiCoO2. Li[Li1/3Mn2/3]O2 and LiCoO2 contents in these electrode materials presented important effects on structure and electrochemical properties. Our results demonstrated that the suitable structural integration of Li[Li1/3Mn 2/3]O2 and LiCoO2 components into LiNi 1/2Mn1/2O2 structure is a practicable way to prepare new electrode materials with the desired electrochemical performances even via a simple solid-state reaction. Among the materials investigated in this work, a reversible capacity of 180-200 mAh/g was obtained for the materials with 0.3 ≤ x + y ≤ 0.6 and excellent cycling performance was observed with a large x (x ≥ 0.25) value in the series of x + y = 0.5.

AB - An exploration of new cathode materials along the two lines having the nominal compositions of (1 - x - y)LiNi1/2Mn1/2O 2 · x Li[Li1/3Mn2/3]O2 · yLiCoO2 (0 ≤ x = y ≤ 0.3 and x + y = 0.5) was performed in the phase diagram of LiNi1/2Mn1/2O 2-Li[Li1/3Mn2/3]O2-LiCoO 2 by a simple solid-state reaction. XRD results identified that all materials are pure phases with layered structure, indicating good structural compatibility between three layered compounds, LiNi1/2Mn 1/2O2, Li[Li1/3Mn2/3]O2, and LiCoO2. Li[Li1/3Mn2/3]O2 and LiCoO2 contents in these electrode materials presented important effects on structure and electrochemical properties. Our results demonstrated that the suitable structural integration of Li[Li1/3Mn 2/3]O2 and LiCoO2 components into LiNi 1/2Mn1/2O2 structure is a practicable way to prepare new electrode materials with the desired electrochemical performances even via a simple solid-state reaction. Among the materials investigated in this work, a reversible capacity of 180-200 mAh/g was obtained for the materials with 0.3 ≤ x + y ≤ 0.6 and excellent cycling performance was observed with a large x (x ≥ 0.25) value in the series of x + y = 0.5.

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DO - 10.1149/1.1829416

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SN - 0013-4651

VL - 152

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 1

ER -

Layered (1-x-y)LiNi_1/2Mn_1/2O₂ · x Li[Li_1/3Mn_2/3] O₂ · yLiCoO₂ (0≤x = y≤_0.3 and x + y = 0.5) cathode materials

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