Hydrogen intercalation

C. Riedl, C. Coletti, T. Iwasaki, A.A. Zakharov, U. Starke, Quasi-free-standing epitaxial graphene on SiC obtained by hydrogen intercalation, Physical Review Letters. 103 (2009) 246804. 

This work consist of a two adding one another experimental parts, discussion and conclusions. In the first experimental part, we report about our investigations of hydrogen intercalation-deintercalation processes in layered InSe and GaSe crystals and powders. In the second one, the influence of intercalated hydrogen on optical properties of these crystals is reported. 

Hydrogen intercalation of y-InSe and e-GaSe samples was carried out (like as in [4, 5]) using the electrochemical method from electrolyte with sweeping electric field in the galvanostatic regime. A special soft choice of the optimal electric field strength and current density (E = 30 50 V/cm and j < 10 iiA/crrr) enabled to... 

Also it was established, that the preliminary irradiation by the laser beam with X = 1.06pm, in particular of GaSe crystal samples, in 1.5 time increase the speed of hydrogen intercalation in these crystals. 

Kozmik I.D., Kovalyuk Z.D., Grigorchak I.I., Bakchmatyuk B.P. (1987) Preparation and properties of hydrogen intercalated gallium and indium monoselenides. Isv. AN SSSR Inorganic materials. 23(5),754-757. 

Zhirko Yu.I., Kovalyuk Z.D., Pyrlja M.M., Boledzyuk V.B. (2003) Optical Investigation of Hydrogen Intercalation-Deintercalation Processes in Layered Semiconductor y-InSe Crystals. Proceeding of VIII Int. Confer. Hydrogen Material Science Chemistry of Carbon Nanomaterials 1157. 

Kovalyuk Z.D., Prokipchuk T.P., Seredjuk A.I., Tovstyuk K.D. (1987) Investigation of impurity state in hydrogen intercalates of gallium selenium by NMR method. Fiz. Tverd. Tela. 29(7), 2191-2193. 

Chabanier and Guay (2004) Electroanalytics Ru02/ Ir02 Phase formation hydrogen intercalation + + + Water splitting... 

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