Thursday, 23 June 2016: 15:40
Grand Ballroom (Hyatt Regency)
Silicon as anode material for Li-ion batteries is interesting due to its very high theoretical capacity. However, the positive ability to accommodate up to four lithium ions per silicon atom has a corresponding downside in the extreme changes occurring in the battery, usually leading to rapid degradation. A silicon-carbon composite made by a cost-effective and environmental-friendly production of the raw materials has been tested. The effect of silicon quality, as chemical composition and particle size as well as binder composition and electrolyte additives, have been examined. Post mortem studies were performed to understand the mechanisms. The tests showed more than 1200 cycles of a 600 mAh/g total anode.