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Enhanced electrochemical performances of 5 V spinel LiMn sub(1.58)Ni sub(0.42)O sub(4) cathode materials by coating with LiAlO sub(2)

LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) spinel cathode materials have been prepared by coating Al sub(2)O sub(3) on Mn sub(0.79)Ni sub(0.21)CO sub(3) precursors, followed by post-sintering with Li sub(2)CO sub(3) at 900 degree C. X-ray diffraction and FT-IR analyses indicate... Full description

Journal Title: Journal of Power Sources Oct 1, 2013, Vol.239, pp.181-188
Main Author: Cheng, F
Other Authors: Xin, Y , Huang, Y , Chen, J , Zhou, H , Zhang, X
Format: Electronic Article Electronic Article
Language: English
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Quelle: © ProQuest LLC All rights reserved
ID: ISSN: 0378-7753
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title: Enhanced electrochemical performances of 5 V spinel LiMn sub(1.58)Ni sub(0.42)O sub(4) cathode materials by coating with LiAlO sub(2)
format: Article
creator:
  • Cheng, F
  • Xin, Y
  • Huang, Y
  • Chen, J
  • Zhou, H
  • Zhang, X
subjects:
  • Ions
  • Aluminum
  • Particulates
  • X-Ray Diffraction
  • Electrochemistry
  • Coatings
  • General
ispartof: Journal of Power Sources, Oct 1, 2013, Vol.239, pp.181-188
description: LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) spinel cathode materials have been prepared by coating Al sub(2)O sub(3) on Mn sub(0.79)Ni sub(0.21)CO sub(3) precursors, followed by post-sintering with Li sub(2)CO sub(3) at 900 degree C. X-ray diffraction and FT-IR analyses indicate that during the calcination process aluminum ions not only react with Li sub(2)CO sub(3) to form a strengthened LiAlO sub(2) coating layer but also migrate from the surface into the spherical particles. The LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) samples exhibit excellent electrochemical performance compared to that of the bare one in terms of rate capability and cyclability. In particular, the 1 mol.% LiAlO sub(2)-surface modified sample can deliver a discharge capacity of 100.6 m Ah g super(-1) even at a high current density of 4 C-rate, while the bare one only has a discharge capacity of 49.5 m Ah g super(-1). At 55 degree C, the 1 mol.% LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) sample shows outstanding cyclability with less than 5% capacity fade after 150 cycles. Based on these results, coating on the precursors to prepare a strengthened LiAlO sub(2) coating layer would be a promising method to enhance the electrochemical performance of 5 V spinel cathode materials.
language: eng
source: © ProQuest LLC All rights reserved
identifier: ISSN: 0378-7753
fulltext: no_fulltext
issn:
  • 03787753
  • 0378-7753
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titleEnhanced electrochemical performances of 5 V spinel LiMn sub(1.58)Ni sub(0.42)O sub(4) cathode materials by coating with LiAlO sub(2)
creatorCheng, F ; Xin, Y ; Huang, Y ; Chen, J ; Zhou, H ; Zhang, X
contributorCheng, F (correspondence author)
ispartofJournal of Power Sources, Oct 1, 2013, Vol.239, pp.181-188
identifierISSN: 0378-7753
subjectIons ; Aluminum ; Particulates ; X-Ray Diffraction ; Electrochemistry ; Coatings ; General
descriptionLiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) spinel cathode materials have been prepared by coating Al sub(2)O sub(3) on Mn sub(0.79)Ni sub(0.21)CO sub(3) precursors, followed by post-sintering with Li sub(2)CO sub(3) at 900 degree C. X-ray diffraction and FT-IR analyses indicate that during the calcination process aluminum ions not only react with Li sub(2)CO sub(3) to form a strengthened LiAlO sub(2) coating layer but also migrate from the surface into the spherical particles. The LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) samples exhibit excellent electrochemical performance compared to that of the bare one in terms of rate capability and cyclability. In particular, the 1 mol.% LiAlO sub(2)-surface modified sample can deliver a discharge capacity of 100.6 m Ah g super(-1) even at a high current density of 4 C-rate, while the bare one only has a discharge capacity of 49.5 m Ah g super(-1). At 55 degree C, the 1 mol.% LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) sample shows outstanding cyclability with less than 5% capacity fade after 150 cycles. Based on these results, coating on the precursors to prepare a strengthened LiAlO sub(2) coating layer would be a promising method to enhance the electrochemical performance of 5 V spinel cathode materials.
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titleEnhanced electrochemical performances of 5 V spinel LiMn sub(1.58)Ni sub(0.42)O sub(4) cathode materials by coating with LiAlO sub(2)
descriptionLiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) spinel cathode materials have been prepared by coating Al sub(2)O sub(3) on Mn sub(0.79)Ni sub(0.21)CO sub(3) precursors, followed by post-sintering with Li sub(2)CO sub(3) at 900 degree C. X-ray diffraction and FT-IR analyses indicate that during the calcination process aluminum ions not only react with Li sub(2)CO sub(3) to form a strengthened LiAlO sub(2) coating layer but also migrate from the surface into the spherical particles. The LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) samples exhibit excellent electrochemical performance compared to that of the bare one in terms of rate capability and cyclability. In particular, the 1 mol.% LiAlO sub(2)-surface modified sample can deliver a discharge capacity of 100.6 m Ah g super(-1) even at a high current density of 4 C-rate, while the bare one only has a discharge capacity of 49.5 m Ah g super(-1). At 55 degree C, the 1 mol.% LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) sample shows outstanding cyclability with less than 5% capacity fade after 150 cycles. Based on these results, coating on the precursors to prepare a strengthened LiAlO sub(2) coating layer would be a promising method to enhance the electrochemical performance of 5 V spinel cathode materials.
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titleEnhanced electrochemical performances of 5 V spinel LiMn sub(1.58)Ni sub(0.42)O sub(4) cathode materials by coating with LiAlO sub(2)
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abstractLiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) spinel cathode materials have been prepared by coating Al sub(2)O sub(3) on Mn sub(0.79)Ni sub(0.21)CO sub(3) precursors, followed by post-sintering with Li sub(2)CO sub(3) at 900 degree C. X-ray diffraction and FT-IR analyses indicate that during the calcination process aluminum ions not only react with Li sub(2)CO sub(3) to form a strengthened LiAlO sub(2) coating layer but also migrate from the surface into the spherical particles. The LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) samples exhibit excellent electrochemical performance compared to that of the bare one in terms of rate capability and cyclability. In particular, the 1 mol.% LiAlO sub(2)-surface modified sample can deliver a discharge capacity of 100.6 m Ah g super(-1) even at a high current density of 4 C-rate, while the bare one only has a discharge capacity of 49.5 m Ah g super(-1). At 55 degree C, the 1 mol.% LiAlO sub(2)-surface modified LiMn sub(1.58)Ni sub(0.42)O sub(4) sample shows outstanding cyclability with less than 5% capacity fade after 150 cycles. Based on these results, coating on the precursors to prepare a strengthened LiAlO sub(2) coating layer would be a promising method to enhance the electrochemical performance of 5 V spinel cathode materials.
urlhttp://search.proquest.com/docview/1448755995/
date2013-10-01