Rechargeable Fe(III/VI) super-iron cathodes.
This study addresses a fundamental challenge posed by hexavalent iron electrochemical irreversibility, which had slowed practical development of reversible Fe(VI) cathodes; nanolayers circumvent fundamental passivation challenges, and are electrodeposited from solution phase FeO(4)(2-), forming 601 mAh g(-1) Li, and 485 mAh g(-1) Na, Fe(III/VI) alkaline cathodes, the latter exhibiting 100-200 storage cycles at 80% depth of discharge, providing pathways towards metal hydride batteries with twice the cathode capacity.
Licht
Stuart
S
Department of Chemistry, University of Massachusetts, Boston, USA. stuart.licht@umb.edu
Tel-Vered
Ran
R