Fabrication of nano/micro hierarchical Fe2O3/Ni micrometer-wire structure and characteristics for high rate Li rechargeable battery

Eiji Hosono, Shinobu Fujihara, Itaru Honma, Masaki Ichihara, Haoshen Zhou

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The nano/micro hierarchical Fe2 O3 Ni micrometer wire, which is a low-cost material, as a negative electrode for Li-ion cells with the high specific capacity at high charge/discharge current rate, was fabricated. Nanocrystalline and mesoporous Fe2 O3 film was formed on nickel mesh, knitted of nickel micrometer wires, via pyrolytic transformation of FeO (OH)0.29 (N O3) 0.27 (C O3) 0.22 ,0.6 H2 O film, which was directly deposited on the entire surface of the nickel mesh by chemical bath deposition. The nestlike morphology with nanoflake of iron oxyhydroxide was maintained after the pyrolysis reaction into Fe2 O3. Moreover, each nanoflake was constructed by several nanometers particles. This specific hierarchical morphology not only provides ideal electrolyte, lithium ion paths, and electronic paths, but it also reduces both the required diffusion length in the active materials and the effective specific current density. The resultant Fe2 O3 negative electrode, which gives a high specific charge/discharge capacity 780 mAhg with good cycle performance even in a high charge/discharge current rate of 13 Ag, indicates the possibility for an energy storage device with high energy density at high power density.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume153
Issue number7
DOIs
Publication statusPublished - 2006 Jul

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Secondary batteries
Nickel
electric batteries
micrometers
nickel
wire
Wire
Fabrication
fabrication
mesh
Ions
Electrodes
electrodes
energy storage
diffusion length
Lithium
Energy storage
Electrolytes
pyrolysis
radiant flux density

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Fabrication of nano/micro hierarchical Fe2O3/Ni micrometer-wire structure and characteristics for high rate Li rechargeable battery. / Hosono, Eiji; Fujihara, Shinobu; Honma, Itaru; Ichihara, Masaki; Zhou, Haoshen.

In: Journal of the Electrochemical Society, Vol. 153, No. 7, 07.2006.

Research output: Contribution to journalArticle

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