Synthesis of layered-layered xLi 2MnO 3·(1-x) LiMO 2 (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process

Soo Kim; Chunjoong Kim; Jae Kyo Noh; Seungho Yu; Su Jin Kim; Wonyoung Chang; Won Chang Choi; Kyung Yoon Chung; Byung Won Cho

doi:10.1016/j.jpowsour.2012.07.135

Synthesis of layered-layered xLi ₂MnO ₃·(1-x) LiMO ₂ (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process

Soo Kim, Chunjoong Kim, Jae Kyo Noh, Seungho Yu, Su Jin Kim, Wonyoung Chang, Won Chang Choi, Kyung Yoon Chung, Byung Won Cho

Research output: Contribution to journal › Article

39 Citations (Scopus)

Abstract

A strategy of facile route to prepare the Li ₂MnO ₃-stabilized LiMO ₂ (M = Mn, Ni, Co) electrode materials, cathode materials for Lithium secondary batteries that can be operated at the high voltage greater than 4.5 V, is proposed using the method of mechanochemical process. Li ₂MnO ₃ was synthesized at 400 °C, followed by the mechanochemical process with LiMO ₂ to form nanocomposite with the layered-layered structure. Structures and morphologies of xLi ₂MnO ₃·(1-x)LiMO ₂ are investigated to confirm the layered-layered structural integration. Various mole ratios of our xLi ₂MnO ₃·(1-x)LiMO ₂ electrode materials exhibit a large discharge capacity about 200 mAh g ^-1 at the room temperature. The cycle performances and the specific discharge capacities are improved by the secondary heat treatment for the xLi ₂MnO ₃·(1-x)LiMO ₂ composite electrodes where x ≤ 0.5. Our experimental results suggest the mechanochemical process is an easy and effective tool to form the nanocomposite of two components with controlled composition, especially, for the layered-layered integrated structure of xLi ₂MnO ₃·(1-x)LiMO ₂ system.

Original language	English
Pages (from-to)	422-429
Number of pages	8
Journal	Journal of Power Sources
Volume	220
DOIs	https://doi.org/10.1016/j.jpowsour.2012.07.135
Publication status	Published - 2012 Dec 15
Externally published	Yes

Keywords

Cathodes
Lithium secondary battery
Mechanochemical process
Nanocomposite

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.jpowsour.2012.07.135

Fingerprint Dive into the research topics of 'Synthesis of layered-layered xLi 2MnO 3·(1-x) LiMO 2 (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process'. Together they form a unique fingerprint.

Cite this

Synthesis of layered-layered xLi ₂MnO ₃·(1-x) LiMO ₂ (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process. / Kim, Soo; Kim, Chunjoong; Noh, Jae Kyo; Yu, Seungho; Kim, Su Jin; Chang, Wonyoung; Choi, Won Chang; Chung, Kyung Yoon; Cho, Byung Won.

In: Journal of Power Sources, Vol. 220, 15.12.2012, p. 422-429.

Research output: Contribution to journal › Article

@article{e3d2a0be8198490bbeaa062694e7151b,

title = "Synthesis of layered-layered xLi 2MnO 3·(1-x) LiMO 2 (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process",

abstract = "A strategy of facile route to prepare the Li 2MnO 3-stabilized LiMO 2 (M = Mn, Ni, Co) electrode materials, cathode materials for Lithium secondary batteries that can be operated at the high voltage greater than 4.5 V, is proposed using the method of mechanochemical process. Li 2MnO 3 was synthesized at 400 °C, followed by the mechanochemical process with LiMO 2 to form nanocomposite with the layered-layered structure. Structures and morphologies of xLi 2MnO 3·(1-x)LiMO 2 are investigated to confirm the layered-layered structural integration. Various mole ratios of our xLi 2MnO 3·(1-x)LiMO 2 electrode materials exhibit a large discharge capacity about 200 mAh g -1 at the room temperature. The cycle performances and the specific discharge capacities are improved by the secondary heat treatment for the xLi 2MnO 3·(1-x)LiMO 2 composite electrodes where x ≤ 0.5. Our experimental results suggest the mechanochemical process is an easy and effective tool to form the nanocomposite of two components with controlled composition, especially, for the layered-layered integrated structure of xLi 2MnO 3·(1-x)LiMO 2 system.",

keywords = "Cathodes, Lithium secondary battery, Mechanochemical process, Nanocomposite",

author = "Soo Kim and Chunjoong Kim and Noh, {Jae Kyo} and Seungho Yu and Kim, {Su Jin} and Wonyoung Chang and Choi, {Won Chang} and Chung, {Kyung Yoon} and Cho, {Byung Won}",

year = "2012",

month = dec,

day = "15",

doi = "10.1016/j.jpowsour.2012.07.135",

language = "English",

volume = "220",

pages = "422--429",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

}

TY - JOUR

T1 - Synthesis of layered-layered xLi 2MnO 3·(1-x) LiMO 2 (M = Mn, Ni, Co) nanocomposite electrodes materials by mechanochemical process

AU - Kim, Soo

AU - Kim, Chunjoong

AU - Noh, Jae Kyo

AU - Yu, Seungho

AU - Kim, Su Jin

AU - Chang, Wonyoung

AU - Choi, Won Chang

AU - Chung, Kyung Yoon

AU - Cho, Byung Won

PY - 2012/12/15

Y1 - 2012/12/15

N2 - A strategy of facile route to prepare the Li 2MnO 3-stabilized LiMO 2 (M = Mn, Ni, Co) electrode materials, cathode materials for Lithium secondary batteries that can be operated at the high voltage greater than 4.5 V, is proposed using the method of mechanochemical process. Li 2MnO 3 was synthesized at 400 °C, followed by the mechanochemical process with LiMO 2 to form nanocomposite with the layered-layered structure. Structures and morphologies of xLi 2MnO 3·(1-x)LiMO 2 are investigated to confirm the layered-layered structural integration. Various mole ratios of our xLi 2MnO 3·(1-x)LiMO 2 electrode materials exhibit a large discharge capacity about 200 mAh g -1 at the room temperature. The cycle performances and the specific discharge capacities are improved by the secondary heat treatment for the xLi 2MnO 3·(1-x)LiMO 2 composite electrodes where x ≤ 0.5. Our experimental results suggest the mechanochemical process is an easy and effective tool to form the nanocomposite of two components with controlled composition, especially, for the layered-layered integrated structure of xLi 2MnO 3·(1-x)LiMO 2 system.

AB - A strategy of facile route to prepare the Li 2MnO 3-stabilized LiMO 2 (M = Mn, Ni, Co) electrode materials, cathode materials for Lithium secondary batteries that can be operated at the high voltage greater than 4.5 V, is proposed using the method of mechanochemical process. Li 2MnO 3 was synthesized at 400 °C, followed by the mechanochemical process with LiMO 2 to form nanocomposite with the layered-layered structure. Structures and morphologies of xLi 2MnO 3·(1-x)LiMO 2 are investigated to confirm the layered-layered structural integration. Various mole ratios of our xLi 2MnO 3·(1-x)LiMO 2 electrode materials exhibit a large discharge capacity about 200 mAh g -1 at the room temperature. The cycle performances and the specific discharge capacities are improved by the secondary heat treatment for the xLi 2MnO 3·(1-x)LiMO 2 composite electrodes where x ≤ 0.5. Our experimental results suggest the mechanochemical process is an easy and effective tool to form the nanocomposite of two components with controlled composition, especially, for the layered-layered integrated structure of xLi 2MnO 3·(1-x)LiMO 2 system.

KW - Cathodes

KW - Lithium secondary battery

KW - Mechanochemical process

KW - Nanocomposite

UR - http://www.scopus.com/inward/record.url?scp=84865494568&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865494568&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2012.07.135

DO - 10.1016/j.jpowsour.2012.07.135

M3 - Article

AN - SCOPUS:84865494568

VL - 220

SP - 422

EP - 429

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -