Cu and hence their effect on the X-ray graylevel value of cycled graphite were minimized. In addition to the possible factors listed earlier that could account for discrepancies between the relative database-derived and graylevel values, the presence of highly neutron attenuating LiOH in the cycled anode could also contribute to the higher neutron graylevel value. However, we could not segment LiOH from the cycled graphite which we believe is most likely due to the porosity in LiOH. Since pores are below the NeXT spatial resolution limit of ~15-20 µm, and they decrease the average density and neutron graylevel value of LiOH, the observed relative neutron contrast between LiOH and cycled graphite was too small for segmentation.