LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, Y) cathode materials prepared by combustion synthesis

Heon-Jin Choi, Ki Min Lee, June Gunn Lee

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate, M-nitrates, and urea at about 280°C for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800°C for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4.

Original languageEnglish
Pages (from-to)154-159
Number of pages6
JournalJournal of Power Sources
Volume103
Issue number1
DOIs
Publication statusPublished - 2001 Dec 30

Fingerprint

combustion synthesis
Combustion synthesis
spinel
Nitrates
Cathodes
cathodes
nitrates
lithium hydroxides
Urea
Manganese
Lithium
Heat treatment
ureas
Powders
Oxides
manganese
heat treatment
costs
Costs
cycles

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

@article{f979c458cf25448c873ea4fa81152094,
title = "LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, Y) cathode materials prepared by combustion synthesis",
abstract = "Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate, M-nitrates, and urea at about 280°C for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800°C for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4.",
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LiMn1.95M0.05O4 (M : Al, Co, Fe, Ni, Y) cathode materials prepared by combustion synthesis. / Choi, Heon-Jin; Lee, Ki Min; Lee, June Gunn.

In: Journal of Power Sources, Vol. 103, No. 1, 30.12.2001, p. 154-159.

Research output: Contribution to journalArticle

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T2 - Al, Co, Fe, Ni, Y) cathode materials prepared by combustion synthesis

AU - Choi, Heon-Jin

AU - Lee, Ki Min

AU - Lee, June Gunn

PY - 2001/12/30

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N2 - Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate, M-nitrates, and urea at about 280°C for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800°C for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4.

AB - Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate, M-nitrates, and urea at about 280°C for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800°C for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4.

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