"2009-01-01+01:00"^^ . . "2010-12-31+01:00"^^ . . "2010-04-16+02:00"^^ . . . . "8"^^ . . "8"^^ . "Nesplnil zad\u00E1n\u00ED, smlouva v\u0161ak byla dodr\u017Eena."@cs . "Hydrogen is a very prospective fuel both for direct combustion and in electrochemical batteries and fuel cells. One of principal problems by Mg-Ni \u2013 based hydrogen storage alloys is to decrease desorption temperature in order to enable the hydrogen charging/decharging cycle at lower temperatures. The goal of the project is to investigate influence of alloying Mg2Ni compound by small atoms (Be, B and C) that incorporate the structure of the compound as interstitials. They restrict the number of ways the hydrogen can occupy in the lattice. It is evident that this constraint would influence the stability of the hydride, and, hence the desorption temperature. Since hydrogen does not occupy all the interstitial positions in Mg2NiH4, it can be expected that the alloying with planned elements might not decrease substantially the hydrogen sorption capacity of the hydride, which is highly desirable. Present project will prove the idea. The modified alloys cannot be prepared by conventional melting-and-casting technique because the melting point of the final composition is too high (and vapor pressure of Mg is too high at those temperatures). Therefore, intensive ball-milling technique will be applied"@en . . . "Failed to fulfill assignment agreement, however, was observed."@en . . . . "hydrogen; hydrogen storage; desorption"@en . . "http://www.isvav.cz/projectDetail.do?rowId=GA106/09/0814"^^ . . "Kinetika desorpce vod\u00EDku v intermetaliku Mg2Ni-H modifikovan\u00E9m vybran\u00FDmi interstici\u00E1ln\u00EDmi elementy" . " hydrogen storage" . "2015-02-09+01:00"^^ . . "GA106/09/0814" . "1"^^ . . . "hydrogen" . . "0"^^ . "Vod\u00EDk je perspektivn\u00ED palivo jak pro tepeln\u00E1 za\u0159\u00EDzen\u00ED s\u00A0p\u0159\u00EDm\u00FDm spalov\u00E1n\u00EDm, tak pro elektrochemick\u00E9 baterie a palivov\u00E9 \u010Dl\u00E1nky. Jedn\u00EDm z\u00A0hlavn\u00EDch probl\u00E9m\u016F, kter\u00E9 je t\u0159eba aktu\u00E1ln\u011B \u0159e\u0161it, je sn\u00ED\u017Een\u00ED pracovn\u00ED teploty reakce uvol\u0148uj\u00EDc\u00ED vod\u00EDk a teploty \u00FA\u010Dinn\u00E9ho nab\u00EDjen\u00ED skladovac\u00EDho m\u00E9dia vod\u00EDkem. C\u00EDlem projektu je prozkoumat vliv legov\u00E1n\u00ED perspektivn\u00EDho intermetalika Mg2Ni mal\u00FDmi atomy (Be, B a C), kter\u00E9 v\u00A0krystalov\u00E9 m\u0159\u00ED\u017Ei zauj\u00EDmaj\u00ED interstici\u00E1ln\u00ED pozice. D\u00E1 se p\u0159edpokl\u00E1dat, \u017Ee tyto atomy omez\u00ED mo\u017Enosti inkorporace atom\u016F vod\u00EDku, ovlivn\u00ED stabilitu hydridu a t\u00EDm i teplotu absorpce-desorpce vod\u00EDku. Proto\u017Ee vod\u00EDk neobsazuje v\u0161echny mo\u017En\u00E9 interstici\u00E1ln\u00ED pozice v\u00A0krystalov\u00E9 m\u0159\u00ED\u017Ei, d\u00E1 se p\u0159edpokl\u00E1dat, \u017Ee legov\u00E1n\u00ED neovlivn\u00ED podstatn\u011B mezn\u00ED rozpustnost vod\u00EDku ve zkouman\u00E9m m\u00E9diu, co\u017E by bylo \u017E\u00E1douc\u00ED pro aplikace. C\u00EDlem p\u0159edkl\u00E1dan\u00E9ho projektu je tuto my\u0161lenku ov\u011B\u0159it. Proto\u017Ee zam\u00FD\u0161len\u00E1 slo\u017Een\u00ED experiment\u00E1ln\u00EDch slitin nelze p\u0159ipravit klasick\u00FDmi metodami pro vysokou tenzi par Mg p\u0159i velmi vysok\u00FDch hodnot\u00E1ch likvidu odpov\u00EDdaj\u00EDc\u00EDch po\u017Eadovan\u00FDm koncentrac\u00EDm leguj\u00EDc\u00EDch prvk\u016F, budou experiment\u00E1ln\u00ED materi\u00E1ly p\u0159ipraveny technikou mechanick\u00E9ho legov\u00E1n\u00ED." . . "0"^^ . . "Desorption kinetics of hydrogen in Mg2Ni-H intermetallic modified by chosen interstitials"@en .