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Title: Li{sub x}Co{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} electrode materials: Electrochemical and structural studies

Abstract

Graphical abstract: Evolution of the c{sub hex.}/a{sub hex.} ratio with x in LiCo{sub 1−2x}Mn{sub x}Ni{sub x}O{sub 2} solid solution showing that less Li/Ni disorder is observed for x < 0.4. Highlights: ► LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} is a member of the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} solid solution. ► Structural refinement of this cathode material shows no Li/Ni disorder. ► The rhombohedral symmetry was preserved upon lithium removal. ► The discharge capacity reached more than 140 mAh/g at 2C rate and 160 mAh/g at 1C. -- Abstract: LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} layered oxide in a member of the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} solid solution between LiCoO{sub 2} and LiNi{sub 0.5}Mn{sub 0.5}O{sub 2}. Compositions from this solid solution have attracted much attention and have been extensively studied as promising cathode candidates to replace the most popular LiCoO{sub 2} cathode material used in the commercial lithium-ion batteries (LiBs). LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} positive electrode material was prepared via the combustion method followed by a thermal treatment at 900 °C for 12 h. This material was characterized by a high homogeneity and a granular shape. The Rietveld refinement evidenced that the structure of this compound exhibits no Ni/Li disordermore » revealing that the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} system presents the ideal structure for LiBs application when x < 0.4. The electrochemical performances of the LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} sample were measured at different current rates in the 2.7–4.5 V potential range. Its discharge capacity reached 178, 161 and 145 mAhg{sup −1} at C/20, 1C and 2C, respectively. Structural changes in LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} upon delithiation were studied using ex situ X-ray diffraction. A continuous solid solution with a rhombohedral symmetry was detected in the whole composition range. This structural stability during the cycling combined with the obtained electrochemical features make this material convenient for the LiBs applications.« less

Authors:
 [1];  [2];  [1];  [3]; ;  [2]
  1. LCME, FST Marrakech, University Cadi Ayyad, BP549, Av. A. Khattabi, Marrakech (Morocco)
  2. Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Yamazaki 2461, Noda Chiba 278-8510 (Japan)
  3. Institute for Materials Science, Darmstadt University of Technology, Petersenstraße 23, 64287 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
22215173
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 8; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATHODES; ELECTRIC BATTERIES; HEAT TREATMENTS; LITHIUM; LITHIUM IONS; OXIDES; SOLID SOLUTIONS; TRIGONAL LATTICES; X-RAY DIFFRACTION

Citation Formats

Mahmoud, Abdelfattah, Yoshita, Mayumi, Saadoune, Ismael, Broetz, Joachim, Fujimoto, Kenjiro, and Ito, Shigeru. Li{sub x}Co{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} electrode materials: Electrochemical and structural studies. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.04.031.
Mahmoud, Abdelfattah, Yoshita, Mayumi, Saadoune, Ismael, Broetz, Joachim, Fujimoto, Kenjiro, & Ito, Shigeru. Li{sub x}Co{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} electrode materials: Electrochemical and structural studies. United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.031
Mahmoud, Abdelfattah, Yoshita, Mayumi, Saadoune, Ismael, Broetz, Joachim, Fujimoto, Kenjiro, and Ito, Shigeru. 2012. "Li{sub x}Co{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} electrode materials: Electrochemical and structural studies". United States. https://doi.org/10.1016/J.MATERRESBULL.2012.04.031.
@article{osti_22215173,
title = {Li{sub x}Co{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} electrode materials: Electrochemical and structural studies},
author = {Mahmoud, Abdelfattah and Yoshita, Mayumi and Saadoune, Ismael and Broetz, Joachim and Fujimoto, Kenjiro and Ito, Shigeru},
abstractNote = {Graphical abstract: Evolution of the c{sub hex.}/a{sub hex.} ratio with x in LiCo{sub 1−2x}Mn{sub x}Ni{sub x}O{sub 2} solid solution showing that less Li/Ni disorder is observed for x < 0.4. Highlights: ► LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} is a member of the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} solid solution. ► Structural refinement of this cathode material shows no Li/Ni disorder. ► The rhombohedral symmetry was preserved upon lithium removal. ► The discharge capacity reached more than 140 mAh/g at 2C rate and 160 mAh/g at 1C. -- Abstract: LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} layered oxide in a member of the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} solid solution between LiCoO{sub 2} and LiNi{sub 0.5}Mn{sub 0.5}O{sub 2}. Compositions from this solid solution have attracted much attention and have been extensively studied as promising cathode candidates to replace the most popular LiCoO{sub 2} cathode material used in the commercial lithium-ion batteries (LiBs). LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} positive electrode material was prepared via the combustion method followed by a thermal treatment at 900 °C for 12 h. This material was characterized by a high homogeneity and a granular shape. The Rietveld refinement evidenced that the structure of this compound exhibits no Ni/Li disorder revealing that the LiCo{sub 1−2x}Ni{sub x}Mn{sub x}O{sub 2} system presents the ideal structure for LiBs application when x < 0.4. The electrochemical performances of the LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} sample were measured at different current rates in the 2.7–4.5 V potential range. Its discharge capacity reached 178, 161 and 145 mAhg{sup −1} at C/20, 1C and 2C, respectively. Structural changes in LiCo{sub 0.4}Ni{sub 0.3}Mn{sub 0.3}O{sub 2} upon delithiation were studied using ex situ X-ray diffraction. A continuous solid solution with a rhombohedral symmetry was detected in the whole composition range. This structural stability during the cycling combined with the obtained electrochemical features make this material convenient for the LiBs applications.},
doi = {10.1016/J.MATERRESBULL.2012.04.031},
url = {https://www.osti.gov/biblio/22215173}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 8,
volume = 47,
place = {United States},
year = {2012},
month = {8}
}