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Characterization of hydrogen absorption/desorption states on lithium-carbon-hydrogen system by neutron diffraction

https://hiroshima.repo.nii.ac.jp/records/2007202
https://hiroshima.repo.nii.ac.jp/records/2007202
6543b324-130a-4f30-83ae-5d6984fa8325
名前 / ファイル ライセンス アクション
JApplPhys_104_053511.pdf JApplPhys_104_053511.pdf (113.4 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Characterization of hydrogen absorption/desorption states on lithium-carbon-hydrogen system by neutron diffraction
言語 en
作成者 Miyaoka, Hiroki

× Miyaoka, Hiroki

en Miyaoka, Hiroki

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Itoh, Keiji

× Itoh, Keiji

en Itoh, Keiji

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Fukunaga, Toshiharu

× Fukunaga, Toshiharu

en Fukunaga, Toshiharu

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Ichikawa, Takayuki

× Ichikawa, Takayuki

en Ichikawa, Takayuki

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Kojima, Yoshitsugu

× Kojima, Yoshitsugu

en Kojima, Yoshitsugu

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Fuji, Hironobu

× Fuji, Hironobu

en Fuji, Hironobu

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 104, 053511 and may be found at http://dx.doi.org/10.1063/1.2956504.
主題
主題Scheme NDC
主題 430
内容記述
内容記述 The nanostructural hydrogenated graphite (CnanoHx) was synthesized from graphite by ball milling under hydrogen (H2) atmosphere. In this product, characteristic hydrogenated states in the form of polarized hydrocarbon groups (―CH, ―CH2, and ―CH3) are realized in the nanoscale. By synthesizing the composite of CnanoHx and lithium hydride (LiH), known as the Li―C―H system, hydrogen was desorbed at 350 °C, which is a lower temperature compared to the decomposition temperature of each component. It is considered that this hydrogen desorption would be induced by destabilization of each hydrogen absorbed state due to an interaction between the polarized C―H groups in CnanoHx and LiH. Therefore, in order to understand the hydrogen absorption/desorption mechanism of the Li―C―H system, it is an important issue to investigate the change in the C―H groups during hydrogen absorption/desorption reactions in the composite. The correlations among atoms contained in this composite are examined by neutron diffraction measurements, where the protium/deuterium (H/D) isotopic substitution was used to clarify the location of hydrogen atoms in this composite. Some C―D and Li―D correlations are found from the radial distribution function [RDF(r)] obtained by the neutron diffraction for the CnanoDx and LiD composite. After dehydrogenation, C―C triple bond and Li―C bond, ascribed to lithium carbide (Li2C2), are observed. Furthermore, the RDF(r) corresponding to rehydrogenated composite indicates the presence of not only the Li―D correlation but also the C―D one.
言語 en
出版者
出版者 American Institute of Physics
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
識別子タイプ DOI
関連識別子 10.1063/1.2956504
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.1063/1.2956504
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0021-8979
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00693547
開始ページ
開始ページ 053511
書誌情報 en : Journal of Applied Physics

巻 104, 号 5, p. 053511, 発行日 2008-09
旧ID 36739
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