The electrochemical properties of Fe2O3-loaded carbon electrodes for iron-air battery anodes

Bui Thi Hang, Tomonori Watanabe, Minato Eashira, Shigeto Okada, Jun Ichi Yamaki, Satoshi Hata, Seong-Ho Yoon, Isao Mochida

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The redox efficiency of iron has been improved by increasing the distribution of iron on the carbon surface with Fe2O 3-loaded carbon materials. The Fe2O3-loaded carbon material was prepared by loading Fe2O3 on carbon by a chemical method. Fe(NO3)3 was impregnated on carbon with different weight ratios of iron-to-carbon in an aqueous solution, and the mixture was dried and then calcined for 1 h at 400 °C in flowing Ar. The effect of various carbons on the physical and electrochemical properties of Fe2O3-loaded carbon electrodes was investigated with the use of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) along with X-ray energy-dispersive spectroscopy (EDS), cyclic voltammetry (CV) and galvanostatic cycling performance. Transmission electron microscopy coupled with X-ray diffraction measurements revealed that small Fe2O3 particles were distributed on the carbon surface. Natural graphite and several nano-carbon materials such as acetylene black and tubular carbon nanofibers (tubular CNF) exhibited improved characteristics, such as enhanced capacity and higher redox currents for the Fe2O3-loaded carbon electrode. SEM and EDS results suggest that Fe2O3-loaded nano-carbon electrodes, due to the large surface area of the nano-carbon, have more Fe2O3 dispersed than on Fe2O3-coated graphite electrodes.

Original languageEnglish
Pages (from-to)261-271
Number of pages11
JournalJournal of Power Sources
Volume150
Issue number1-2
DOIs
Publication statusPublished - Oct 4 2005

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Electrochemical properties
electric batteries
Anodes
anodes
Carbon
Iron
iron
Electrodes
electrodes
carbon
air
Air
graphite
Transmission electron microscopy
X ray diffraction
Acetylene
Graphite electrodes
Scanning electron microscopy
Carbon nanofibers
Graphite

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

The electrochemical properties of Fe2O3-loaded carbon electrodes for iron-air battery anodes. / Hang, Bui Thi; Watanabe, Tomonori; Eashira, Minato; Okada, Shigeto; Yamaki, Jun Ichi; Hata, Satoshi; Yoon, Seong-Ho; Mochida, Isao.

In: Journal of Power Sources, Vol. 150, No. 1-2, 04.10.2005, p. 261-271.

Research output: Contribution to journalArticle

Hang, Bui Thi ; Watanabe, Tomonori ; Eashira, Minato ; Okada, Shigeto ; Yamaki, Jun Ichi ; Hata, Satoshi ; Yoon, Seong-Ho ; Mochida, Isao. / The electrochemical properties of Fe2O3-loaded carbon electrodes for iron-air battery anodes. In: Journal of Power Sources. 2005 ; Vol. 150, No. 1-2. pp. 261-271.
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