Two different SnO-based glasses, Sn2B3O6.5 and Sn2B2AlO6.5, have been exami
ned with FT-IR and Raman spectroscopy at different stages during the first
electrochemical cycle, It was found that some disruption of the connection
between berate units in the network occurred during cycling. There was also
an irreversible formation of Li3BO3 that can be related to the large capac
ity loss. (C) 2001 Elsevier Science B.V. All rights reserved.