Synthesis of Diphenylalanine/Cobalt Oxide Hybrid Nanowires and Their Application to Energy Storage

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We report the synthesis of novel diphenylalanine/cobalt(II,III) oxide (Co(3)O(4)) composite nanowires by peptide self-assembly. Peptide nanowires were prepared by treating amorphous diphenylalanine film with aniline vapor at an elevated temperature. They were hybridized with Co(3)O(4) nanocrystals through the reduction of cobalt ions in an aqueous solution using sodium borohydride (NaBH(4)) without any complex processes such as heat treatment. The formation of peptide/Co(3)O(4) composite nanowires was characterized using multiple tools, such as electron microscoples and elemental analysis, and their potential application as a negative electrode for Li-ion batteries was explored by constructing Swagelok-type cells with hybrid nanowires as a working electrode and examining their charge/discharge behavior. The present study provides a useful approach for the synthesis of functional metal oxide nanomaterials by demonstrating the feasibility of peptide/Co(3)O(4) hybrid nanowires as an energy storage material.
Publisher
Amer Chemical Soc
Issue Date
2010
Language
English
Article Type
Article
Keywords

ION BATTERY ELECTRODES; MAGNETIC NANOPARTICLES; CONDUCTING NANOWIRES; PEPTIDE NANOTUBES; CO3O4; TEMPERATURE; FABRICATION; DEPOSITION; GROWTH; FILM

Citation

ACS NANO, v.4, no.1, pp.159 - 164

ISSN
1936-0851
DOI
10.1021/nn901156w
URI
http://hdl.handle.net/10203/20787
Appears in Collection
MS-Journal Papers(저널논문)
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