Electrochemical properties of LiNi0.5Mn1.5O4 cathode after Cr doping

Sung Bin Park; Won Sob Eom; Won Il Cho; Ho Jang

doi:10.1016/j.jpowsour.2005.10.099

Electrochemical properties of LiNi_0.5Mn_1.5O₄ cathode after Cr doping

Sung Bin Park, Won Sob Eom, Won Il Cho, Ho Jang

Department of Materials Science and Engineering

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

87 Citations (Scopus)

Abstract

The structure and electrochemical properties of Cr doped LiNi_0.5-xMn_1.5Cr_xO₄ cathodes with different Cr contents (x = 0.00, 0.01, 0.03, and 0.05) were investigated by X-ray diffraction, SEM, cyclic voltammetry, charge-discharge tests, and thermogravimetric analysis. In particular, restoration of Li in the cathode during intercalation was carefully analyzed by employing heating-cooling cycles of thermogravimetric technique. Results showed that the initial discharge capacity and capacity retention of the LiNi_0.5-xMn_1.5Cr_xO₄ cathode were improved as the Cr content was increased. Thermal analysis and CV test results suggested that the improvement of the electrochemical properties of the Cr doped LiNi_0.5-xMn_1.5Cr_xO₄ cathode was attributed to the high oxygen affinity of the Cr, which reduced oxygen deficiency and improved structural stability of the cathode.

Original language	English
Pages (from-to)	679-684
Number of pages	6
Journal	Journal of Power Sources
Volume	159
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jpowsour.2005.10.099
Publication status	Published - 2006 Sept 13

Keywords

Chromium
Doping
LiNiMnO
Lithium-ion batteries

ASJC Scopus subject areas

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

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2005.10.099

Cite this

@article{db6af2ac306a460c8514403e21db5b60,

title = "Electrochemical properties of LiNi0.5Mn1.5O4 cathode after Cr doping",

abstract = "The structure and electrochemical properties of Cr doped LiNi0.5-xMn1.5CrxO4 cathodes with different Cr contents (x = 0.00, 0.01, 0.03, and 0.05) were investigated by X-ray diffraction, SEM, cyclic voltammetry, charge-discharge tests, and thermogravimetric analysis. In particular, restoration of Li in the cathode during intercalation was carefully analyzed by employing heating-cooling cycles of thermogravimetric technique. Results showed that the initial discharge capacity and capacity retention of the LiNi0.5-xMn1.5CrxO4 cathode were improved as the Cr content was increased. Thermal analysis and CV test results suggested that the improvement of the electrochemical properties of the Cr doped LiNi0.5-xMn1.5CrxO4 cathode was attributed to the high oxygen affinity of the Cr, which reduced oxygen deficiency and improved structural stability of the cathode.",

keywords = "Chromium, Doping, LiNiMnO, Lithium-ion batteries",

author = "Park, {Sung Bin} and Eom, {Won Sob} and Cho, {Won Il} and Ho Jang",

note = "Funding Information: This work was financially supported by the grant from the Ministry of Commerce, Industry and Energy of Korea (research grant code no.: M10428010002-04L2801-00210).",

year = "2006",

month = sep,

day = "13",

doi = "10.1016/j.jpowsour.2005.10.099",

language = "English",

volume = "159",

pages = "679--684",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

number = "1 SPEC. ISS.",

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TY - JOUR

T1 - Electrochemical properties of LiNi0.5Mn1.5O4 cathode after Cr doping

AU - Park, Sung Bin

AU - Eom, Won Sob

AU - Cho, Won Il

AU - Jang, Ho

N1 - Funding Information: This work was financially supported by the grant from the Ministry of Commerce, Industry and Energy of Korea (research grant code no.: M10428010002-04L2801-00210).

PY - 2006/9/13

Y1 - 2006/9/13

N2 - The structure and electrochemical properties of Cr doped LiNi0.5-xMn1.5CrxO4 cathodes with different Cr contents (x = 0.00, 0.01, 0.03, and 0.05) were investigated by X-ray diffraction, SEM, cyclic voltammetry, charge-discharge tests, and thermogravimetric analysis. In particular, restoration of Li in the cathode during intercalation was carefully analyzed by employing heating-cooling cycles of thermogravimetric technique. Results showed that the initial discharge capacity and capacity retention of the LiNi0.5-xMn1.5CrxO4 cathode were improved as the Cr content was increased. Thermal analysis and CV test results suggested that the improvement of the electrochemical properties of the Cr doped LiNi0.5-xMn1.5CrxO4 cathode was attributed to the high oxygen affinity of the Cr, which reduced oxygen deficiency and improved structural stability of the cathode.

AB - The structure and electrochemical properties of Cr doped LiNi0.5-xMn1.5CrxO4 cathodes with different Cr contents (x = 0.00, 0.01, 0.03, and 0.05) were investigated by X-ray diffraction, SEM, cyclic voltammetry, charge-discharge tests, and thermogravimetric analysis. In particular, restoration of Li in the cathode during intercalation was carefully analyzed by employing heating-cooling cycles of thermogravimetric technique. Results showed that the initial discharge capacity and capacity retention of the LiNi0.5-xMn1.5CrxO4 cathode were improved as the Cr content was increased. Thermal analysis and CV test results suggested that the improvement of the electrochemical properties of the Cr doped LiNi0.5-xMn1.5CrxO4 cathode was attributed to the high oxygen affinity of the Cr, which reduced oxygen deficiency and improved structural stability of the cathode.

KW - Chromium

KW - Doping

KW - LiNiMnO

KW - Lithium-ion batteries

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DO - 10.1016/j.jpowsour.2005.10.099

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JO - Journal of Power Sources

JF - Journal of Power Sources

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