Role of Intermetallic Materials in Hydrogen Energy storage

  • Mr Sunil Panday, India
  • Mr Rajesh Singh, India
  • Mr T Yadav, India
  • O Srivastava, Banaras Hindu University, Varanasi-221005, India
  • There are a large number of intermetallics which work as exotic materials for storage of Hydrogen: the future fuel for vehicular transport and electricity generation. Hydrogen is the only fuel which is indigenous, pollution free and completely renewable. Although for the hydrogen: production, storage and application, all are important, presently storage is critical issue. It cuts across production, storage and application. Some of more important materials are typified AB5 (i.e. LaNi5), AB2 (i,e ZrFe2) and AB (i.e. FeTi) amongst others. In this paper, we shall after giving brief review of the international developments, forms on the R & D carried out on the intermetallics at Hydrogen Energy Centre, B.H.U. The focus will be on the variants of MmNi5 and ZrFe2 obtained through material tailoring. The material tailoring leads to availability of higher number of interistial sites which can be occupied by hydrogen atoms. This has resulted on the development of the AB5 type intermetallics with storage capacity of 2.4 wt%, (earlier highest value of S.C. ~1.5wt%) which is the highest known so far for ambient temperature storage materials. Computer simulation studies of PCT curves will be also described and discussed. The use of these intermetallic materials, in hydrogen fueled road transport for typical Indian vehicles i.e. two and three wheelers, will be presented.