Solution combustion synthesis and enhanced electrochemical performance Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles by controlling NO{sub 3}{sup –}/CH{sub 3}COO{sup –} ratio of the precursors

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.05.005· OSTI ID:22475924

Zhang, Qingtang ^[1]; Mei, Juntao; Xie, Xiaolong ^[1]; Wang, Xiaomei ^[1]; Zhang, Junyan ^[2]

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1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050 (China)
2. Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000,China (China)

Highlights: • The size of Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles can be controlled by NO{sub 3}{sup −}/CH{sub 3}COO{sup −} ratio. • 35 nm Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles can be obtained with 3:1 NO{sub 3}{sup –}/CH{sub 3}COO{sup –} ratio. • 35 nm Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles shows excellent electrochemical performance. - Abstract: Lithium-rich layer oxide Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles were fabricated through solution combustion synthesis by controlling NO{sub 3}{sup –}/CH{sub 3}COO{sup –} ratio of the precursors. The relationships between the NO{sub 3}{sup –}/CH{sub 3}COO{sup –} ratio and structure as well as electrochemical performance of Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles are investigated. XRD reveals that Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} nanoparticles obtained with a suitable NO{sub 3}{sup –}/CH{sub 3}COO{sup –} ratio of 3:1 (LLO-3N1A) is composed of the smallest nanocrystallite of 18 nm. SEM reflects that the average primary particles of LLO-3N1A are the smallest with a size of 35 nm. Those unique characteristic guarantee the excellent electrochemical performance of LLO-3N1A. LLO-3N1A exhibits a specific capacity of 252.3 mA h g{sup −1} at 0.1 C. In addition, LLO-3N1A also shows best rate capability among the four prepared Li{sub 1.2}Ni{sub 0.2}Mn{sub 0.6}O{sub 2} samples.

• OSTI ID: 22475924
• Journal Information: Materials Research Bulletin, Vol. 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ACETATES
COMBUSTION
ELECTROCHEMISTRY
ENERGY STORAGE
LAYERS
LITHIUM COMPOUNDS
MANGANATES
MATHEMATICAL SOLUTIONS
NANOPARTICLES
NICKEL COMPOUNDS
NITRATES
OXIDES
PERFORMANCE
PRECURSOR
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SYNTHESIS
X-RAY DIFFRACTION