Synthesis and characterization of potassium metal/graphitic carbon nanofiber intercalates

Jason A. Michel; Vance S. Robinson; Liu Yang; Senthil Sambandam; Weijie Lu; Tyler Westover; Timothy S. Fisher; Charles M. Lukehart

doi:10.1166/jnn.2008.308

Synthesis and characterization of potassium metal/graphitic carbon nanofiber intercalates

Jason A. Michel, Vance S. Robinson, Liu Yang, Senthil Sambandam, Weijie Lu, Tyler Westover, Timothy S. Fisher, Charles M. Lukehart

Energy & Environmental Science & Technology

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Direct reaction of herringbone, platelet, or narrow, tubular herringbone graphitic carbon nanofibers (GCNFs) with molten potassium gives K/GCNF intercalates with stoichiometric control of potassium loading. Intercalate formation is confirmed by powder X-ray diffraction and micro-Raman spectroscopy. K/GCNF intercalates act as radical-anion alkene polymerization catalysts and reduce water with stoichiometric formation of hydrogen gas. Stage-1 K/narrow, tubular GCNF intercalate exhibits thermionic emission at 300 °C. Stage-1 K/herringbone GCNF intercalate is an excellent thermionic emitter having high thermal stability up to 1000 °C. K/GCNF intercalates have much reduced work functions of ca. 2.2 eV with localized emission showing a work function of 1.6 eV.

Original language	English
Pages (from-to)	1942-1950
Number of pages	9
Journal	Journal of Nanoscience and Nanotechnology
Volume	8
Issue number	4
DOIs	https://doi.org/10.1166/jnn.2008.308
State	Published - Apr 2008

Keywords

Carbon nanofibers
Potassium intercalate

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10.1166/jnn.2008.308

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title = "Synthesis and characterization of potassium metal/graphitic carbon nanofiber intercalates",

abstract = "Direct reaction of herringbone, platelet, or narrow, tubular herringbone graphitic carbon nanofibers (GCNFs) with molten potassium gives K/GCNF intercalates with stoichiometric control of potassium loading. Intercalate formation is confirmed by powder X-ray diffraction and micro-Raman spectroscopy. K/GCNF intercalates act as radical-anion alkene polymerization catalysts and reduce water with stoichiometric formation of hydrogen gas. Stage-1 K/narrow, tubular GCNF intercalate exhibits thermionic emission at 300 °C. Stage-1 K/herringbone GCNF intercalate is an excellent thermionic emitter having high thermal stability up to 1000 °C. K/GCNF intercalates have much reduced work functions of ca. 2.2 eV with localized emission showing a work function of 1.6 eV.",

keywords = "Carbon nanofibers, Potassium intercalate",

author = "Michel, {Jason A.} and Robinson, {Vance S.} and Liu Yang and Senthil Sambandam and Weijie Lu and Tyler Westover and Fisher, {Timothy S.} and Lukehart, {Charles M.}",

year = "2008",

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T1 - Synthesis and characterization of potassium metal/graphitic carbon nanofiber intercalates

AU - Michel, Jason A.

AU - Robinson, Vance S.

AU - Yang, Liu

AU - Sambandam, Senthil

AU - Lu, Weijie

AU - Westover, Tyler

AU - Fisher, Timothy S.

AU - Lukehart, Charles M.

PY - 2008/4

Y1 - 2008/4

N2 - Direct reaction of herringbone, platelet, or narrow, tubular herringbone graphitic carbon nanofibers (GCNFs) with molten potassium gives K/GCNF intercalates with stoichiometric control of potassium loading. Intercalate formation is confirmed by powder X-ray diffraction and micro-Raman spectroscopy. K/GCNF intercalates act as radical-anion alkene polymerization catalysts and reduce water with stoichiometric formation of hydrogen gas. Stage-1 K/narrow, tubular GCNF intercalate exhibits thermionic emission at 300 °C. Stage-1 K/herringbone GCNF intercalate is an excellent thermionic emitter having high thermal stability up to 1000 °C. K/GCNF intercalates have much reduced work functions of ca. 2.2 eV with localized emission showing a work function of 1.6 eV.

AB - Direct reaction of herringbone, platelet, or narrow, tubular herringbone graphitic carbon nanofibers (GCNFs) with molten potassium gives K/GCNF intercalates with stoichiometric control of potassium loading. Intercalate formation is confirmed by powder X-ray diffraction and micro-Raman spectroscopy. K/GCNF intercalates act as radical-anion alkene polymerization catalysts and reduce water with stoichiometric formation of hydrogen gas. Stage-1 K/narrow, tubular GCNF intercalate exhibits thermionic emission at 300 °C. Stage-1 K/herringbone GCNF intercalate is an excellent thermionic emitter having high thermal stability up to 1000 °C. K/GCNF intercalates have much reduced work functions of ca. 2.2 eV with localized emission showing a work function of 1.6 eV.

KW - Carbon nanofibers

KW - Potassium intercalate

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SN - 1533-4880

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EP - 1950

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 4

ER -

Synthesis and characterization of potassium metal/graphitic carbon nanofiber intercalates

Abstract

Keywords

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