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Solid-state synthesis of Li Li0.2Mn0.56Ni0.16Co0.08 O-2 cathode materials for lithium-ion batteries
Alternative TitleParticuology
Hao, W. J.; Zhan, H. H.; Chen, H.; Wang, Y. H.; Tan, Q. Q.; Su, F. B.
2014
Source PublicationParticuology
Volume15Issue:4Pages:18-26
AbstractLayered Li[Li0.2Mn0.56Ni0.16Co0.08]O-2 cathode materials were synthesized via a solid-state reaction for Li-ion batteries, in which lithium hydroxide monohydrate, manganese dioxide, nickel monoxide, and cobalt monoxide were employed as metal precursors. To uncover the relationship between the structure and electrochemical properties of the materials, synthesis conditions such as calcination temperature and time as well as quenching methods were investigated. For the synthesized Li[Li0.2Mn0.56Ni0.16Co0.08]O-2 materials, the metal components were found to be in the form of Mn4+, Ni2+, and Co3+, and their molar ratio was in good agreement with stoichiometric ratio of 0.56:0.16:0.08. Among them, the one synthesized at 800 degrees C for 12 h and subsequently quenched in air showed the best electrochemical performances, which had an initial discharge specific capacity and coulombic efficiency of 265.6 mAh/g and 84.0%, respectively, and when cycled at 0.5, 1, and 2 C, the corresponding discharge specific capacities were 237.3, 212.6, and 178.6 mAh/g, respectively. After recovered to 0.1 C rate, the discharge specific capacity became 259.5 mAh/g and the capacity loss was only 2.3% of the initial value at 0.1 C. This work suggests that the solid-state synthesis route is easy for preparing high performance Li[Li0.2Mn0.56Ni0.16Co0.08]O-2 cathode materials for Li-ion batteries. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordLithium-ion Batteries Cathode Material Solid-state Synthesis Lithium-rich Material Electrochemical Properties High-voltage Cathode Positive Electrode Material Electrochemical Performance Surface Modification Anomalous Capacity Cycling Stability Co Electrodes Composite Li Mn
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Indexed BySCI
Language英语
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11398
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Hao, W. J.,Zhan, H. H.,Chen, H.,et al. Solid-state synthesis of Li Li0.2Mn0.56Ni0.16Co0.08 O-2 cathode materials for lithium-ion batteries[J]. Particuology,2014,15(4):18-26.
APA Hao, W. J.,Zhan, H. H.,Chen, H.,Wang, Y. H.,Tan, Q. Q.,&Su, F. B..(2014).Solid-state synthesis of Li Li0.2Mn0.56Ni0.16Co0.08 O-2 cathode materials for lithium-ion batteries.Particuology,15(4),18-26.
MLA Hao, W. J.,et al."Solid-state synthesis of Li Li0.2Mn0.56Ni0.16Co0.08 O-2 cathode materials for lithium-ion batteries".Particuology 15.4(2014):18-26.
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