Nano structure of low crystallinity carbon materials analyzed by using high energy X-ray diffraction

• Authors: Kyoichi Oshida , Tatsuo Nakazawa , Kozo Osawa , Morinobu Endo
• Languages of publication: EN

Abstracts

EN

In this study, we tried to characterize a kind of low crystallinity carbon materials. The structure of polyparaphenylene(PPP)-based carbon was analyzed by means of high energy X-ray diffraction using the apparatus of SPring-8. The experimental results revealed the existence of basic structural units (BSU) in the highly disordered materials like PPP-based carbon. It is thought that the PPP-based carbons consist of small turbostratic particles, which have a few piled up poly-aromatic layers. The structure of the PPP-based carbon which seemed to be amorphous was estimated to have hexagonal carbon layers with the size of up to 1 nm. The pores in the PPP-based carbon seem to be clearances formed among the BSUs and amorphous carbon. The pore size of PPP-based carbon was estimated from the result of N2 absorption measurement. The experimental results suggested that the lithium ion charge mechanism in the PPP-based carbon differs from that in graphite.

Keywords

EN

disordered carbon material; high energy X-ray diffraction; nano structure; adsorption

Discipline

• 61.05.C-: X-ray diffraction and scattering(for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)
• 61.43.-j: Disordered solids(see also 81.05.Gc Amorphous semiconductors, 81.05.Kf Glasses, and 81.05.Rm Porous materials; granular materials in materials science; for photoluminescence of disordered solids, see 78.55.Mb and 78.55.Qr)
• 68.43.-h: Chemisorption/physisorption: adsorbates on surfaces

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 2
• Pages: 232-236

Dates

published

1 - 6 - 2009

online

26 - 4 - 2009

Contributors

author

Kyoichi Oshida

• Nagano national College of Technology, 716 Tokuma, 381-8550, Nagano, Japan

author

Tatsuo Nakazawa

• Nagano national College of Technology, 716 Tokuma, 381-8550, Nagano, Japan

author

Kozo Osawa

• Nagano national College of Technology, 716 Tokuma, 381-8550, Nagano, Japan

author

Morinobu Endo

• Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan

References

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Identifiers

DOI

10.2478/s11534-009-0028-6