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

Cited 119 time in Web of Science Cited 126 time in Scopus
Issue Date
2010-01
Citation
ACS Nano, Vol.4 No.1, pp.159-164
Keywords
peptide self-assemblydiphenylalaninehybrid nanostructurescobalt oxideenergy storagenanowires
Abstract
We report the synthesis of novel diphenylalanine/cobalt(II,III) oxide (Co3O4) 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 Co3O4 nanocrystals through the reduction of cobalt ions in an aqueous solution using sodium borohydride (NaBH4) without any complex processes such as heat treatment. The formation of peptide/Co3O4 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/Co3O4 hybrid nanowires as an energy storage material.
ISSN
1936-0851
URI
https://hdl.handle.net/10371/165170
DOI
https://doi.org/10.1021/nn901156w
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Materials Science and Engineering (재료공학부)Journal Papers (저널논문_재료공학부)
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