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  1. 1 2009

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  1. 1 Endo M.

  2. 1 Nakazawa T.

  3. 1 Osawa K.

  4. 1 Oshida K.

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

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Oshida K., Nakazawa T., Osawa K., Endo M.
Open Physics
|
2009
|
vol. 7
|
issue 2
232-236
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.
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