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Title: Synthesis and electrochemical performance of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (0 {<=} x {<=} 0.15) cathode materials for lithium-ion batteries

Abstract

Graphical abstract: Cycle behavior of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} cells (x = 0, 0.05, 0.10 and 0.15) obtained during cycling within the potential of 2.5-4.3 V. Highlights: Black-Right-Pointing-Pointer The spherical Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} were synthesized by coprecipitation method. Black-Right-Pointing-Pointer Excess lithium improved the electrochemical performance. Black-Right-Pointing-Pointer Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} showed the best electrochemical performance. Black-Right-Pointing-Pointer Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} had the lowest charge transfer resistance. -- Abstract: In this work, layered lithium-excess materials Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (x = 0, 0.05, 0.10 and 0.15), of spherical morphology with primary nanoparticles assembled in secondary microspheres, were synthesized by a coprecipitation method. The effects of lithium content on the structure and electrochemical performance of these materials were evaluated by employing X-ray diffraction (XRD), inductive coupled plasma (ICP), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge tests. It is found that Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}}, i.e., Li[(Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}){sub 0.95}Li{sub 0.05}]O{sub 2} showed the best electrochemical performance due to the highly ordered layered structure, reduced cation mixing and the lowest charge transfer resistance. Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} delivered a discharge capacity of 145more » mA h g{sup -1} at 125 mA g{sup -1} in the cut-off voltage of 2.5-4.3 V, and had a capacity retention of 100% after 50 cycles at room temperature.« less

Authors:
; ; ; ;  [1];  [1]
  1. Ningbo Institute of Material Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo 315201 (China)
Publication Date:
OSTI Identifier:
22212472
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 3; Other Information: Copyright (c) 2011 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:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ELECTRIC BATTERIES; ELECTRIC POTENTIAL; LITHIUM; LITHIUM IONS; NANOSTRUCTURES; SCANNING ELECTRON MICROSCOPY; SPECTROSCOPY; SYNTHESIS; X-RAY DIFFRACTION

Citation Formats

Liu, Juanjuan, Wang, Jun, Xia, Yonggao, Zhou, Xufeng, Saixi, Yaletu, and Liu, Zhaoping. Synthesis and electrochemical performance of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (0 {<=} x {<=} 0.15) cathode materials for lithium-ion batteries. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2011.11.058.
Liu, Juanjuan, Wang, Jun, Xia, Yonggao, Zhou, Xufeng, Saixi, Yaletu, & Liu, Zhaoping. Synthesis and electrochemical performance of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (0 {<=} x {<=} 0.15) cathode materials for lithium-ion batteries. United States. doi:10.1016/J.MATERRESBULL.2011.11.058.
Liu, Juanjuan, Wang, Jun, Xia, Yonggao, Zhou, Xufeng, Saixi, Yaletu, and Liu, Zhaoping. Thu . "Synthesis and electrochemical performance of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (0 {<=} x {<=} 0.15) cathode materials for lithium-ion batteries". United States. doi:10.1016/J.MATERRESBULL.2011.11.058.
@article{osti_22212472,
title = {Synthesis and electrochemical performance of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (0 {<=} x {<=} 0.15) cathode materials for lithium-ion batteries},
author = {Liu, Juanjuan and Wang, Jun and Xia, Yonggao and Zhou, Xufeng and Saixi, Yaletu and Liu, Zhaoping},
abstractNote = {Graphical abstract: Cycle behavior of Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} cells (x = 0, 0.05, 0.10 and 0.15) obtained during cycling within the potential of 2.5-4.3 V. Highlights: Black-Right-Pointing-Pointer The spherical Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} were synthesized by coprecipitation method. Black-Right-Pointing-Pointer Excess lithium improved the electrochemical performance. Black-Right-Pointing-Pointer Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} showed the best electrochemical performance. Black-Right-Pointing-Pointer Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} had the lowest charge transfer resistance. -- Abstract: In this work, layered lithium-excess materials Li{sub 1+x}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} (x = 0, 0.05, 0.10 and 0.15), of spherical morphology with primary nanoparticles assembled in secondary microspheres, were synthesized by a coprecipitation method. The effects of lithium content on the structure and electrochemical performance of these materials were evaluated by employing X-ray diffraction (XRD), inductive coupled plasma (ICP), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge tests. It is found that Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}}, i.e., Li[(Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}){sub 0.95}Li{sub 0.05}]O{sub 2} showed the best electrochemical performance due to the highly ordered layered structure, reduced cation mixing and the lowest charge transfer resistance. Li{sub 1.10}Ni{sub 0.5}Mn{sub 0.3}Co{sub 0.2}O{sub 2+{delta}} delivered a discharge capacity of 145 mA h g{sup -1} at 125 mA g{sup -1} in the cut-off voltage of 2.5-4.3 V, and had a capacity retention of 100% after 50 cycles at room temperature.},
doi = {10.1016/J.MATERRESBULL.2011.11.058},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 3,
volume = 47,
place = {United States},
year = {2012},
month = {3}
}