The discovery of new allotropes has stimulated research in the storage of h
ydrogen in carbon. Recent publications claim carbon nanotubes can store rem
arkable amounts of gaseous hydrogen. In this article we show that nanotube-
containing material can electrochemicaly store relatively large amounts (11
0 mAh/g) of hydrogen. The reaction is highly reversible and nanotubes were
used to produce electrodes for rechargeable batteries. (C) 1999 The Electro
chemical Society. S1099-0062(98)07-067-9. All rights reserved.