High-Power Li-Ion Anode Materials Rishi Raj, University of Colorado at Boulder, DMR 0907108. Amorphous silicon oxycarbide (SiCO) ceramics made from siloxane-based polymers can be discharged in a fraction of a second without failure (Fig. 1).
Fig. 1: The red plot shows the capacity (mAhg–1) as the charging rate, shown in green increases; C-rate implies number of charge cycles per hour. The absence of damage to the anode is shown by full recovery. (Ahn and Raj: doi:10.1016/j.jpowsour.2010.09.086)
Fig. 2: PDCs are interface materials, expected to contain graphene like networks of carbon that form the “interface” to which mixed bond of Si-C-O as shown above, are anchored (DOI: 10.1111/j.1551-2916.2006.00920.x). The Li atoms segregate to these tetrahedra at concentrations of 10 to 100 times greater than in elemental graphite (DOI: 10.1111/j.1551-2916.2009.03539.x).