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Title: 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

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.
Authors:
 [1] ; ;  [1] ;  [1] ;  [2]
  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)
Publication Date:
OSTI Identifier:
22475924
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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