Oxide-nickel electrodes as hydrogen storage units of high-capacity

In this study, it was experimentally proved that during a Ni-Cd batteries long service life (more than five years), the hydrogen accumulation in large quantities takes place in a form of nickel hydrides in a sintered nickel matrix of oxide-nickel electrodes. The capacity of the sintered nickel matrix of the oxide-nickel electrode as a hydrogen absorber was quantified as 20.1 wt% and 400 kg m(-3). These values exceed thrice all the earlier data obtained by traditional methods for any reversible metal hydride. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.