Synthesis and electrochemical properties of Li0.44MnO 2 as a novel 4 V cathode material

Junji Akimoto; Junji Awaka; Yasuhiko Takahashi; Norihito Kijima; Mitsuharu Tabuchi; Akiko Nakashima; Hikari Sakaebe; Kuniaki Tatsumi

doi:10.1149/1.2035750

Synthesis and electrochemical properties of Li_0.44MnO ₂ as a novel 4 V cathode material

Junji Akimoto, Junji Awaka, Yasuhiko Takahashi, Norihito Kijima, Mitsuharu Tabuchi, Akiko Nakashima, Hikari Sakaebe, Kuniaki Tatsumi

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

22 Citations (Scopus)

Abstract

Li_0.44Mn_1-yTi_yO₂ (0 < y < 0.55) with Na_0.44MnO₂-type tunnel structure were prepared from the Na-analogs via ion exchange in molten LiNO₃/LiCl at 280-330°C. Chemical analysis indicated the Na/Li ratios in Li _0.44Mn_1-yTi_yO₂ were less than 0.004. The electrochemical measurements for the Li/Li_0.44MnO₂ cell showed a novel high potential plateau region at around 4.3 V on both charge and discharge with an average discharge voltage of 3.57 V, and an initial discharge capacity of 166 mAh/g between 2.5 and 4.8 V. The 4 V plateau was observed in all Li/Li_0.44Mn_1-yTi_yO ₂ cells with different Ti contents. The maximum discharge capacity (179 mAh/g) was observed in the Li/Li_0.44Mn_0.89Ti _0.11O₂ cell.

Original language	English
Pages (from-to)	A554-A557
Journal	Electrochemical and Solid-State Letters
Volume	8
Issue number	10
DOIs	https://doi.org/10.1149/1.2035750
Publication status	Published - 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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@article{d7bfcd4c509f44cf876213e22055c535,

title = "Synthesis and electrochemical properties of Li0.44MnO 2 as a novel 4 V cathode material",

abstract = "Li0.44Mn1-yTiyO2 (0 < y < 0.55) with Na0.44MnO2-type tunnel structure were prepared from the Na-analogs via ion exchange in molten LiNO3/LiCl at 280-330°C. Chemical analysis indicated the Na/Li ratios in Li 0.44Mn1-yTiyO2 were less than 0.004. The electrochemical measurements for the Li/Li0.44MnO2 cell showed a novel high potential plateau region at around 4.3 V on both charge and discharge with an average discharge voltage of 3.57 V, and an initial discharge capacity of 166 mAh/g between 2.5 and 4.8 V. The 4 V plateau was observed in all Li/Li0.44Mn1-yTiyO 2 cells with different Ti contents. The maximum discharge capacity (179 mAh/g) was observed in the Li/Li0.44Mn0.89Ti 0.11O2 cell.",

author = "Junji Akimoto and Junji Awaka and Yasuhiko Takahashi and Norihito Kijima and Mitsuharu Tabuchi and Akiko Nakashima and Hikari Sakaebe and Kuniaki Tatsumi",

year = "2005",

doi = "10.1149/1.2035750",

language = "English",

volume = "8",

pages = "A554--A557",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

publisher = "Electrochemical Society, Inc.",

number = "10",

}

TY - JOUR

T1 - Synthesis and electrochemical properties of Li0.44MnO 2 as a novel 4 V cathode material

AU - Akimoto, Junji

AU - Awaka, Junji

AU - Takahashi, Yasuhiko

AU - Kijima, Norihito

AU - Tabuchi, Mitsuharu

AU - Nakashima, Akiko

AU - Sakaebe, Hikari

AU - Tatsumi, Kuniaki

PY - 2005

Y1 - 2005

N2 - Li0.44Mn1-yTiyO2 (0 < y < 0.55) with Na0.44MnO2-type tunnel structure were prepared from the Na-analogs via ion exchange in molten LiNO3/LiCl at 280-330°C. Chemical analysis indicated the Na/Li ratios in Li 0.44Mn1-yTiyO2 were less than 0.004. The electrochemical measurements for the Li/Li0.44MnO2 cell showed a novel high potential plateau region at around 4.3 V on both charge and discharge with an average discharge voltage of 3.57 V, and an initial discharge capacity of 166 mAh/g between 2.5 and 4.8 V. The 4 V plateau was observed in all Li/Li0.44Mn1-yTiyO 2 cells with different Ti contents. The maximum discharge capacity (179 mAh/g) was observed in the Li/Li0.44Mn0.89Ti 0.11O2 cell.

AB - Li0.44Mn1-yTiyO2 (0 < y < 0.55) with Na0.44MnO2-type tunnel structure were prepared from the Na-analogs via ion exchange in molten LiNO3/LiCl at 280-330°C. Chemical analysis indicated the Na/Li ratios in Li 0.44Mn1-yTiyO2 were less than 0.004. The electrochemical measurements for the Li/Li0.44MnO2 cell showed a novel high potential plateau region at around 4.3 V on both charge and discharge with an average discharge voltage of 3.57 V, and an initial discharge capacity of 166 mAh/g between 2.5 and 4.8 V. The 4 V plateau was observed in all Li/Li0.44Mn1-yTiyO 2 cells with different Ti contents. The maximum discharge capacity (179 mAh/g) was observed in the Li/Li0.44Mn0.89Ti 0.11O2 cell.

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U2 - 10.1149/1.2035750

DO - 10.1149/1.2035750

M3 - Article

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SN - 1099-0062

VL - 8

SP - A554-A557

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 10

ER -

Synthesis and electrochemical properties of Li_0.44MnO ₂ as a novel 4 V cathode material

Abstract

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