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Title: Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries

Abstract

Highlights: ► The gradient precursors Ni{sub 0.7}Co{sub 0.15}Mn{sub 0.15}(OH){sub 2} is prepared by hydroxide co-precipitating. ► The cathode materials is synthesized by mixing the precursor with 5% excess LiOH·H{sub 2}O. ► The XRD results show that cathode materials present layered α-NaFeO{sub 2} typical crystal. ► Material sintered at 850 °C shows the best performance, with high-capacity and recyclability. -- Abstract: LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as a cathode material for lithium batteries was synthesized by mixing hydroxide co-precipitated precursors with 5% excess LiOH·H{sub 2}O. Its structural and electrochemical properties were investigated using X-ray diffractometry, scanning electron microscopy, galvanostatic charge–discharge test, and electrochemical impedance spectroscopy. The results indicated that well-ordering layered LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} cathode materials were successfully prepared in air at 750, 800, and 850°C with α-NaFeO{sub 2} typical crystal. The results of charge–discharge test demonstrated that the gradient cathode material sintered at 850 °C exhibited the best electrochemical performance with the initial discharge capacity of 164 mA h g{sup −1} at 0.2 C and lower electrochemical impedance. Nickel has low price. LiNiO{sub 2} cathode materials have high specific capacity, their theoretical capacity is 274 mA h g{sup −1} and with low self-discharge rate. So the Ni, Co,more » Mn ternary layer-structural compounds with high Ni content are showing to be promising cathode materials for lithium batteries. The techniques and research results in this paper are utilizable for the study of this kind of lithium battery materials.« less

Authors:
;  [1];  [1]; ; ;  [1]
  1. School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)
Publication Date:
OSTI Identifier:
22215560
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; 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:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; CRYSTALS; HYDROXIDES; LITHIUM; PRECIPITATION; SCANNING ELECTRON MICROSCOPY; SPECTROSCOPY; SYNTHESIS; X-RAY DIFFRACTION

Citation Formats

Zhang, Lipeng, Dong, Tao, Yu, Xianjin, E-mail: hgxyzlp@sdut.edu.cn, Dong, Yunhui, Zhao, Zengdian, and Li, Heng. Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.002.
Zhang, Lipeng, Dong, Tao, Yu, Xianjin, E-mail: hgxyzlp@sdut.edu.cn, Dong, Yunhui, Zhao, Zengdian, & Li, Heng. Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries. United States. doi:10.1016/J.MATERRESBULL.2012.08.002.
Zhang, Lipeng, Dong, Tao, Yu, Xianjin, E-mail: hgxyzlp@sdut.edu.cn, Dong, Yunhui, Zhao, Zengdian, and Li, Heng. Thu . "Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries". United States. doi:10.1016/J.MATERRESBULL.2012.08.002.
@article{osti_22215560,
title = {Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries},
author = {Zhang, Lipeng and Dong, Tao and Yu, Xianjin, E-mail: hgxyzlp@sdut.edu.cn and Dong, Yunhui and Zhao, Zengdian and Li, Heng},
abstractNote = {Highlights: ► The gradient precursors Ni{sub 0.7}Co{sub 0.15}Mn{sub 0.15}(OH){sub 2} is prepared by hydroxide co-precipitating. ► The cathode materials is synthesized by mixing the precursor with 5% excess LiOH·H{sub 2}O. ► The XRD results show that cathode materials present layered α-NaFeO{sub 2} typical crystal. ► Material sintered at 850 °C shows the best performance, with high-capacity and recyclability. -- Abstract: LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as a cathode material for lithium batteries was synthesized by mixing hydroxide co-precipitated precursors with 5% excess LiOH·H{sub 2}O. Its structural and electrochemical properties were investigated using X-ray diffractometry, scanning electron microscopy, galvanostatic charge–discharge test, and electrochemical impedance spectroscopy. The results indicated that well-ordering layered LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} cathode materials were successfully prepared in air at 750, 800, and 850°C with α-NaFeO{sub 2} typical crystal. The results of charge–discharge test demonstrated that the gradient cathode material sintered at 850 °C exhibited the best electrochemical performance with the initial discharge capacity of 164 mA h g{sup −1} at 0.2 C and lower electrochemical impedance. Nickel has low price. LiNiO{sub 2} cathode materials have high specific capacity, their theoretical capacity is 274 mA h g{sup −1} and with low self-discharge rate. So the Ni, Co, Mn ternary layer-structural compounds with high Ni content are showing to be promising cathode materials for lithium batteries. The techniques and research results in this paper are utilizable for the study of this kind of lithium battery materials.},
doi = {10.1016/J.MATERRESBULL.2012.08.002},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}