The role of oxygen in the uptake of deuterium in lithiated graphite

C. N. Taylor, Purdue University
J. Dadras, University of Tennessee
Kara E. Luitjohan, Purdue University
Jean P. Allain, Purdue University
P. S. Kristic, University of Tennessee, Oak Ridge National Lab
C. H. Skinner, Princeton Plasma Physics Lab

Date of this Version



This is the publisher PDF of Taylor, CN; Dadras, J; Luijohan, KE; Allain, JP; Krstic, PS; and Skinner, CH. "The role of oxygen in the uptake of deuterium in lithiated graphite." Journal of Applied Physics, 114, 223301. 2013. Copyright AIP, it is available at


We investigate the mechanism of deuterium retention by lithiated graphite and its relationship to the oxygen concentration through surface sensitive experiments and atomistic simulations. Deposition of lithium on graphite yielded 5%-8% oxygen surface concentration and when subsequently irradiated with D ions at energies between 500 and 1000 eV/amu and fluences over 10(16) cm(-2) the oxygen concentration rose to between 25% and 40%. These enhanced oxygen levels were reached in a few seconds compared to about 300 h when the lithiated graphite was allowed to adsorb oxygen from the ambient environment under equilibrium conditions. Irradiating graphite without lithium deposition, however, resulted in complete removal of oxygen to levels below the detection limit of XPS (e. g.,


Nanoscience and Nanotechnology