Abstract
The aim of the present paper is to report results on hydrogenation behaviour of the new composite material Mg 2Ni: CNT. Admixing of carbon nanotubes (CNT) in storage material Mg 2Ni leads to noticeable enhancement in desorption kinetics as well as storage capacity. We have found that the composite material Mg 2Ni–2 mole% CNT is the optimum material. The Mg 2Ni–CNT composite exhibits hydrogen desorption rate of 5.7 cc/g/min as against 3.0 cc/g/min for Mg 2Ni alone (enhancement of ∼ 90%) and storage capacity of ∼ 4.20 wt% in contrast to ∼3.20 wt% for Mg 2Ni alone (increase of ∼ 31%). Feasible mechanisms for the enhancement of hydrogen desorption kinetics and storage capacity have been put forward.
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