Hydrothermal synthesis and electrochemical properties of FeNbO4 nanospheres

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

doi:10.2109/jcersj2.120.82

Hydrothermal synthesis and electrochemical properties of FeNbO₄ nanospheres

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

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Iron niobate (FeNbO₄) 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 FeNbO₄ nanospheres obtained through the HT reaction revealed a uniform size with an average diameter of 510 nm, and a larger specific surface area (82.72m² g^-1) than that of bulk FeNbO₄ powder (2.51m² g^-1) prepared by a solid-state reaction. In addition, the electrochemical properties of the FeNbO₄ powders versus Li were evaluated using cyclic voltammetry and galvanostatic charge/discharge cycling. Importantly, the FeNbO₄ 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 language	English
Pages (from-to)	82-85
Number of pages	4
Journal	Journal of the Ceramic Society of Japan
Volume	120
Issue number	1398
DOIs	https://doi.org/10.2109/jcersj2.120.82
Publication status	Published - 2012 Feb
Externally published	Yes

Keywords

Crystal structure
Hydrothermal synthesis
Iron niobate
Lithium-ion battery
Nanosphere

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.2109/jcersj2.120.82

Cite this

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title = "Hydrothermal synthesis and electrochemical properties of FeNbO4 nanospheres",

abstract = "Iron niobate (FeNbO4) 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 FeNbO4 nanospheres obtained through the HT reaction revealed a uniform size with an average diameter of 510 nm, and a larger specific surface area (82.72m2 g-1) than that of bulk FeNbO4 powder (2.51m2 g-1) prepared by a solid-state reaction. In addition, the electrochemical properties of the FeNbO4 powders versus Li were evaluated using cyclic voltammetry and galvanostatic charge/discharge cycling. Importantly, the FeNbO4 nanospheres delivered a reversible capacity of over 200mAh g-1 after 20 cycles, and provided an enhanced rate capability compared to the bulk material.",

keywords = "Crystal structure, Hydrothermal synthesis, Iron niobate, Lithium-ion battery, Nanosphere",

author = "Shim, {Hyun Woo} and Cho, {In Sun} and Sun, {Hong Kug} and Lim, {Ah Hyeon} and Kim, {Dong Wan}",

year = "2012",

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doi = "10.2109/jcersj2.120.82",

language = "English",

volume = "120",

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AU - Shim, Hyun Woo

AU - Cho, In Sun

AU - Sun, Hong Kug

AU - Lim, Ah Hyeon

AU - Kim, Dong Wan

PY - 2012/2

Y1 - 2012/2

N2 - Iron niobate (FeNbO4) 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 FeNbO4 nanospheres obtained through the HT reaction revealed a uniform size with an average diameter of 510 nm, and a larger specific surface area (82.72m2 g-1) than that of bulk FeNbO4 powder (2.51m2 g-1) prepared by a solid-state reaction. In addition, the electrochemical properties of the FeNbO4 powders versus Li were evaluated using cyclic voltammetry and galvanostatic charge/discharge cycling. Importantly, the FeNbO4 nanospheres delivered a reversible capacity of over 200mAh g-1 after 20 cycles, and provided an enhanced rate capability compared to the bulk material.

AB - Iron niobate (FeNbO4) 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 FeNbO4 nanospheres obtained through the HT reaction revealed a uniform size with an average diameter of 510 nm, and a larger specific surface area (82.72m2 g-1) than that of bulk FeNbO4 powder (2.51m2 g-1) prepared by a solid-state reaction. In addition, the electrochemical properties of the FeNbO4 powders versus Li were evaluated using cyclic voltammetry and galvanostatic charge/discharge cycling. Importantly, the FeNbO4 nanospheres delivered a reversible capacity of over 200mAh g-1 after 20 cycles, and provided an enhanced rate capability compared to the bulk material.

KW - Crystal structure

KW - Hydrothermal synthesis

KW - Iron niobate

KW - Lithium-ion battery

KW - Nanosphere

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