Silicon has received significant attention as a viable alternative to graphitic carbon as the negative electrode in lithium-ion batteries due to its high capacity and availability. Significant problems exist in the utilization of silicon as an anode material. The common issues are volume change on cycling and the apparent inability to form a dense stabile solid electrolyte interphase, on silicon, have been issues many researchers have looked at in recent years. While significant advances have been made no universal solution to the stability of the silicon anode has developed. More recently it has become apparent that substantial lifetime issues exist in cells with silicon anodes even when not cycling. This raises major questions as to the parasitic reactions that occur at the silicon anode. This talk will focus on the challenges that are faced in the development of silicon anodes for lithium ion batteries and how the SEISta team, a consortium of researchers from 5 national labs (NREL, SNL, ANL,ORNL and LBNL) are approaching the problem.