Improvement of the thermodynamical and electrochemical properties of multicomponent Laves phase hydrides by thermal annealingстатья
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Дата последнего поиска статьи во внешних источниках: 14 сентября 2013 г.
Аннотация:The reversible hydrogen absorption and desorption behaviour of Zr1-xTixNi1/0.9Mn0.5/0.6Cr0.4V0.1 with x(Ti)=0.1, 0.3, 0.4, 0.6 was investigated in solid/gas and electrochemical experiments at room temperature. One aspect of this work was to study the thermodynamical properties (Vol./AB(2); P-eq(plateau); Cap(max)) of the different samples depending on their Ti content. Another aspect was the analysis of the influence of the annealing treatment on the metallurgical properties and finally the hydrogen absorption/desorption properties of the different samples in solid-gas and electrochemical media. Zr0.7Ti0.3Ni0.9Mn0.6Cr0.4V0.1, for example, shows an increase in the maximum electrochemical discharge capacity by more than 30% to 355 mAh g(-1) after appropriate annealing treatment.