Electrodes made of purified and open single walled carbon nanotubes behave
like metal hydride electrodes in Ni-MH batteries, showing high electrochemi
cal reversible charging capacity up to 800 mAh g(-1) corresponding to a hyd
rogen storage capacity of 2.9 wt% compared to known AB(5), AB(2) metal hydr
ide electrodes. (C) 2000 Elsevier Science Ltd. All rights reserved.