Synthesis of LiMn0.75Fe0.25PO4/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries

Myeong Seong Kim, Jong Pil Jegal, Kwang Chul Roh, Kwang Bum Kim

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

LiMn0.75Fe0.25PO4/C microspheres were synthesized using a microwave-assisted process with a complexing agent. In this process, it was found that the various states of the complexing agent for different pH values of the precursor solution have significant effects on the obtained micro-spherical morphology. Furthermore, the concentration of antisite defects in the samples was also found to be affected by the pH of the precursor. The prepared secondary spheres have a high tap density of 1.3 g cm-3 and deliver a reversible capacity of 163 mA h g-1 at a 0.05 C-rate. Furthermore, remarkable rate capability is obtained, with 57% capacity retention at a 60 C-rate, as well as excellent cyclability, with 99.3% capacity retention after 100 cycles at 1 C-rate.

Original languageEnglish
Pages (from-to)10607-10613
Number of pages7
JournalJournal of Materials Chemistry A
Volume2
Issue number27
DOIs
Publication statusPublished - 2014 Jul 21

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Microspheres
Microwaves
Defects
Lithium-ion batteries

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

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title = "Synthesis of LiMn0.75Fe0.25PO4/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries",
abstract = "LiMn0.75Fe0.25PO4/C microspheres were synthesized using a microwave-assisted process with a complexing agent. In this process, it was found that the various states of the complexing agent for different pH values of the precursor solution have significant effects on the obtained micro-spherical morphology. Furthermore, the concentration of antisite defects in the samples was also found to be affected by the pH of the precursor. The prepared secondary spheres have a high tap density of 1.3 g cm-3 and deliver a reversible capacity of 163 mA h g-1 at a 0.05 C-rate. Furthermore, remarkable rate capability is obtained, with 57{\%} capacity retention at a 60 C-rate, as well as excellent cyclability, with 99.3{\%} capacity retention after 100 cycles at 1 C-rate.",
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Synthesis of LiMn0.75Fe0.25PO4/C microspheres using a microwave-assisted process with a complexing agent for high-rate lithium ion batteries. / Kim, Myeong Seong; Jegal, Jong Pil; Roh, Kwang Chul; Kim, Kwang Bum.

In: Journal of Materials Chemistry A, Vol. 2, No. 27, 21.07.2014, p. 10607-10613.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Kim, Myeong Seong

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AU - Kim, Kwang Bum

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AB - LiMn0.75Fe0.25PO4/C microspheres were synthesized using a microwave-assisted process with a complexing agent. In this process, it was found that the various states of the complexing agent for different pH values of the precursor solution have significant effects on the obtained micro-spherical morphology. Furthermore, the concentration of antisite defects in the samples was also found to be affected by the pH of the precursor. The prepared secondary spheres have a high tap density of 1.3 g cm-3 and deliver a reversible capacity of 163 mA h g-1 at a 0.05 C-rate. Furthermore, remarkable rate capability is obtained, with 57% capacity retention at a 60 C-rate, as well as excellent cyclability, with 99.3% capacity retention after 100 cycles at 1 C-rate.

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