The aim of the present paper is to report results on hydrogenation behaviour of the new composite material Mg2Ni. CNT. Admixing of carbon nanotubes (CNT) in storage material Mg2Ni leads to noticeable enhancement in desorption kinetics as well as storage capacity, We have found that the composite material Mg2Ni-2 mole% CNT is the optimum material The Mg2Ni-CNT composite exhibits hydrogen desorption rate of 5 7 cc/g/min as against 3 0 cc/g/min for Mg2Ni alone (enhancement of similar to 90%) and storage capacity of similar to 4 20 wt% in contrast to similar to 3 20 wt% for Mg2Ni alone (increase of similar to 31%) Feasible mechanisms for the enhancement of hydrogen desorption kinetics and storage capacity have been put forward (C) 2009 Professor T. Nejat Veziroglu Published by Elsevier Ltd. All rights reserved.