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2013

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Full-Text Articles in Nanoscience and Nanotechnology

The Role Of Oxygen In The Uptake Of Deuterium In Lithiated Graphite, C. N. Taylor, J. Dadras, Kara E. Luitjohan, Jean P. Allain, P. S. Kristic, C. H. Skinner Dec 2013

The Role Of Oxygen In The Uptake Of Deuterium In Lithiated Graphite, C. N. Taylor, J. Dadras, Kara E. Luitjohan, Jean P. Allain, P. S. Kristic, C. H. Skinner

Birck and NCN Publications

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 ...