Hydrogen intercalates of low-dimensional dichalcogenides of transition metals
| Autor: | A. A. Semenov-Kobzar, L. M. Kulikov, V. A. Pasechny, L.G. Askel-Rud, N. I. Zakharenko, O. V. Rudenko, L. P. Romaka, N. G. Babich, V. F. Surzhko, M. M. Antonova, V. A. Makara, A. A. Chekhovsky |
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| Rok vydání: | 1997 |
| Předmět: |
Hydrogen
Renewable Energy Sustainability and the Environment Chemistry Intercalation (chemistry) Inorganic chemistry Analytical chemistry Energy Engineering and Power Technology chemistry.chemical_element Conductivity Condensed Matter Physics Magnetic susceptibility Metal Fuel Technology Transition metal Deuterium Electrical resistivity and conductivity visual_art visual_art.visual_art_medium |
| Zdroj: | International Journal of Hydrogen Energy. 22:233-239 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/s0360-3199(96)00159-0 |
| Popis: | Temperature dependences of electrical conductivity and magnetic susceptibility of intercalates HxNbSe2 (0 ⩽ x ⩽ 5.2) and DxNbSe2 (0 ⩽ x ⩽ 0.53) have been studied. A change of the metallic type of conductivity for the semiconducting one for HxNbSe2 (x > 1) is related to the structural transition of the 2HTaS2 → 2HMoS2 type. DxNbSe2 (with the exception of x = 0.41) has a metallic type of conductivity. HxNbSe2, DxNbSe2 are paramagnets. Their magnetic susceptibility at small contents of hydrogen (deuterium) depends weakly on the temperature. At x > 1 the magnetic susceptibility of intercalates changes according to the Curie-Weiss law. The 2HNbSe2 treatment with the hydrogen plasma leads to the formation of the HxNbSe2 intercalates with the 2HTaS2 and 2HMoS2 structural type. The temperature rise results in the formation of only 2HTaS2 structural type. Hydrogen intercalates in considerable quantities in 2HWSe2 and 2HMoSe2 (HxWSe2:0 < x < 3.9; HxMoSe2:0 < x < 2.08) with the dominating intercalation of hydrogen on cooling. 2H-WSe2 possesses improved sorption properties as compared to 2HMoSe2. Hydrogen intercalates of layered dichalcogenides of d-transition metals are promising as new hydrogen-containing materials applied for different purposes. |
| Databáze: | OpenAIRE |
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