Hydrogen Absorption in Alkali-Metal-Graphite Intercalation Compounds and Their Solid State Properties
スポンサーリンク
概要
- 論文の詳細を見る
Alkali-metal-graphite intercalation compounds absorb hydrogen between graphitic layers through two kinds of absorption mechanisms; physisorption andchemisorption. Below about 200K, large amount of hydrogen molecules are occluded physisorptively, while, above this temperature, chemisorption takes place where hydrogen is accommodated in the gallaries of graphitic sheets through dissociation of hydrogen molecule and charge transfer from the host material. In this article, we discuss the electronic properties and structures of alkali-metal-hydrogen-graphite intercalation compounds prepared through hydrogen chemisorption. Hydrogen chemisorption behaviors depend on the kinds of alkali-metals among K, Rb and Cs. The introduction of hydrogen induces charge transfer from the host alkali-metal-graphite intercalation compounds to hydrogen leading to the enhancement of ionicity in the intercalate lattice consisting of alkali-metal and hydrogen and the reduction in the number of graphitic π electron carriers. Especially, in potassium-hydrogen-graphite ternary systems, two-dimensional metallic hydrogen lattice with novel electronic structure is found to exist between graphitic layers.
- 炭素材料学会の論文
炭素材料学会 | 論文
- 「Carbon 2005」レポート
- 炭素複合ボードの建築内装材としての実用性能とその応用
- 炭素複合ボードの酸化ホウ素処理による難燃化機構
- ホウ酸トリエチルを添加したフェノール樹脂-オルトケイ酸テトラエチル複合体からの炭化ケイ素の生成機構
- 熱処理により鉄原子が表面に結合した炭素材料の燃料電池正極触媒としての可能性