Hydrothermal synthesis and electrochemical properties of FeNbO 4 nanospheres

Hyun Woo Shim, In Sun Cho, Hong Kug Sun, Ah Hyeon Lim, Dong-Wan Kim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Iron niobate (FeNbO 4) nanospheres of an orthorhombic structure were synthesized using a hydrothermal (HT) process at 250°C, and were characterized using X-ray diffraction, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and BrunauerEmmettTeller (BET) measurements. The FeNbO 4 nanospheres obtained through the HT reaction revealed a uniform size with an average diameter of 510 nm, and a larger specific surface area (82.72m 2 g -1) than that of bulk FeNbO 4 powder (2.51m 2 g -1) prepared by a solid-state reaction. In addition, the electrochemical properties of the FeNbO 4 powders versus Li were evaluated using cyclic voltammetry and galvanostatic charge/discharge cycling. Importantly, the FeNbO 4 nanospheres delivered a reversible capacity of over 200mAh g -1 after 20 cycles, and provided an enhanced rate capability compared to the bulk material.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume120
Issue number1398
Publication statusPublished - 2012 Feb 1
Externally publishedYes

Fingerprint

Nanospheres
Hydrothermal synthesis
Electrochemical properties
Powders
cycles
niobates
synthesis
field emission
High resolution transmission electron microscopy
solid state
Solid state reactions
iron
Specific surface area
Field emission
transmission electron microscopy
scanning electron microscopy
Cyclic voltammetry
high resolution
Iron
diffraction

Keywords

  • Crystal structure
  • Hydrothermal synthesis
  • Iron niobate
  • Lithium-ion battery
  • Nanosphere

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry
  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Hydrothermal synthesis and electrochemical properties of FeNbO 4 nanospheres. / Shim, Hyun Woo; Cho, In Sun; Sun, Hong Kug; Lim, Ah Hyeon; Kim, Dong-Wan.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 120, No. 1398, 01.02.2012, p. 82-85.

Research output: Contribution to journalArticle

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