Catalytic graphitization of three-dimensional wood-derived porous scaffolds

A catalytic technique to enhance graphite formation in nongraphitizing carbons was adapted to work with three-dimensional wood-derived scaffolds. Unlike many synthetic graphite precursors, wood and other cellulosic carbons remain largely disordered after high temperature pyrolysis. Using a nickel ni...

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Bibliographic Details
Published in:Journal of materials research 2011-01, Vol.26 (1), p.18-25
Main Authors: Johnson, M.T., Faber, K.T.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Biomaterials
Carbon
Graphite
Heat
Inorganic Chemistry
Materials Engineering
Materials research
Materials Science
Microscopy
Nanotechnology
Nickel
Scanning electron microscopy
Silicon nitride
Spectrum analysis
Temperature
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Summary:A catalytic technique to enhance graphite formation in nongraphitizing carbons was adapted to work with three-dimensional wood-derived scaffolds. Unlike many synthetic graphite precursors, wood and other cellulosic carbons remain largely disordered after high temperature pyrolysis. Using a nickel nitrate liquid catalyst and controlled pyrolysis conditions, wood-derived scaffolds were produced showing similar graphitic content to traditional pitch-based graphite while retaining the high-aspect ratio pores of the precursor wood microstructure. Graphite formation was studied as a function of processing time and pyrolysis temperature, and the resulting carbons were analyzed using x-ray diffraction, Raman spectroscopy, x-ray photoelectron spectroscopy, and electron microscopy techniques.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2010.88