Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li 1.02M xMn 1.95O 4-yF y) for lithium ion battery application

Chuanqi Feng; Hua Li; Chaofeng Zhang; Zaiping Guo; Huimin Wu; Jing Tang

doi:10.1016/j.electacta.2011.11.090

Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li _1.02M _xMn _1.95O _4-yF _y) for lithium ion battery application

Chuanqi Feng
, Hua Li
, Chaofeng Zhang
, Zaiping Guo
, Huimin Wu
, Jing Tang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

24 Citations (Scopus)

Abstract

Non-stoichiometric spinel compounds Li _1.02M _xMn _1.95O _4-yF _y (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li _1.02M _xMn _1.95O _4-yF _y samples were characterized by X-ray diffraction, while the particle size and shape of the Li _1.02M _xMn _1.95O _4-yF _y were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li _1.02M _xMn _1.95O _4-yF _y had better cycling performance than pure LiMn ₂O ₄. In addition, among the different non-stoichiometric spinel samples, the Li _1.02Mn _1.95Co _0.02Y _0.01Ga _0.01O _3.97F _0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7% after 100 cycles. The possible reasons for the outstanding electrical properties of Li _1.02Mn _1.95Co _0.02Y _0.01Ga _0.01O _3.97F _0.03 are also discussed. © 2011 Elsevier Ltd.

Original language	English
Pages (from-to)	87-93
Journal	Electrochimica Acta
Volume	61
DOIs	https://doi.org/10.1016/j.electacta.2011.11.090
Publication status	Published - 1 Feb 2012
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

Financial support provided by the Australian Research Council (ARC) through an ARC Linkage project (LP0991012) and a Project of the Education Department of Hubei (D20101006) is gratefully acknowledged.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Chemical synthesis
Electrochemical properties
Li-Mn-Spinel
Lithium-ion batteries

Access Output

10.1016/j.electacta.2011.11.090

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{46a0b541df3e4186acb05efba05890ba,

title = "Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li 1.02M xMn 1.95O 4-yF y) for lithium ion battery application",

abstract = "Non-stoichiometric spinel compounds Li 1.02M xMn 1.95O 4-yF y (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li 1.02M xMn 1.95O 4-yF y samples were characterized by X-ray diffraction, while the particle size and shape of the Li 1.02M xMn 1.95O 4-yF y were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li 1.02M xMn 1.95O 4-yF y had better cycling performance than pure LiMn 2O 4. In addition, among the different non-stoichiometric spinel samples, the Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7\% after 100 cycles. The possible reasons for the outstanding electrical properties of Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 are also discussed. {\textcopyright} 2011 Elsevier Ltd.",

keywords = "Chemical synthesis, Electrochemical properties, Li-Mn-Spinel, Lithium-ion batteries",

author = "Chuanqi Feng and Hua Li and Chaofeng Zhang and Zaiping Guo and Huimin Wu and Jing Tang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2012",

month = feb,

day = "1",

doi = "10.1016/j.electacta.2011.11.090",

language = "English",

volume = "61",

pages = "87--93",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Synthesis and electrochemical properties of non-stoichiometric Li-Mn-spinel (Li 1.02M xMn 1.95O 4-yF y) for lithium ion battery application

AU - Feng, Chuanqi

AU - Li, Hua

AU - Zhang, Chaofeng

AU - Guo, Zaiping

AU - Wu, Huimin

AU - Tang, Jing

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2012/2/1

Y1 - 2012/2/1

N2 - Non-stoichiometric spinel compounds Li 1.02M xMn 1.95O 4-yF y (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li 1.02M xMn 1.95O 4-yF y samples were characterized by X-ray diffraction, while the particle size and shape of the Li 1.02M xMn 1.95O 4-yF y were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li 1.02M xMn 1.95O 4-yF y had better cycling performance than pure LiMn 2O 4. In addition, among the different non-stoichiometric spinel samples, the Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7% after 100 cycles. The possible reasons for the outstanding electrical properties of Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 are also discussed. © 2011 Elsevier Ltd.

AB - Non-stoichiometric spinel compounds Li 1.02M xMn 1.95O 4-yF y (M = Co, Y, and Ga) were prepared for the first time by the rheological phase reaction method. The Li 1.02M xMn 1.95O 4-yF y samples were characterized by X-ray diffraction, while the particle size and shape of the Li 1.02M xMn 1.95O 4-yF y were observed by scanning and transmission electron microscopy. The as-prepared samples were used as cathode materials in lithium-ion batteries, their electrochemical properties were tested, and the results showed that the non-stoichiometric spinels Li 1.02M xMn 1.95O 4-yF y had better cycling performance than pure LiMn 2O 4. In addition, among the different non-stoichiometric spinel samples, the Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 sample not only had higher charge/discharge capacity, but also showed the best cycling performance, as the loss of its capacity was only 7% after 100 cycles. The possible reasons for the outstanding electrical properties of Li 1.02Mn 1.95Co 0.02Y 0.01Ga 0.01O 3.97F 0.03 are also discussed. © 2011 Elsevier Ltd.

KW - Chemical synthesis

KW - Electrochemical properties

KW - Li-Mn-Spinel

KW - Lithium-ion batteries

UR - https://www.scopus.com/pages/publications/84855318217

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84855318217&origin=recordpage

U2 - 10.1016/j.electacta.2011.11.090

DO - 10.1016/j.electacta.2011.11.090

M3 - RGC 21 - Publication in refereed journal

SN - 0013-4686

VL - 61

SP - 87

EP - 93

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -