Farmakis, F.F.FarmakisElmasides, C.C.ElmasidesFanz, PatrikPatrikFanzHagen, MarkusMarkusHagenGeorgoulas, N.N.Georgoulas2022-03-052022-03-052015https://publica.fraunhofer.de/handle/publica/24055610.1016/j.jpowsour.2015.05.083As more and more applications require high energy density electrochemical storage systems that deliver more than 200 Wh/kg, Lithium-ion batteries with silicon-based anodes provide promising electrochemical properties especially high specific capacity. In this paper, we present micro-grain structured silicon deposited by DC sputtering on special copper foil that serves as current collector. It is demonstrated that high-density silicon anodes are obtained with more than 2000 mAh g-1 and 2.0 mAh cm-2 that can be considered as a commercial value. In addition, irreversible capacity during the first galvanostatic cycle can be lower than 20% for such anodes. Finally, it is found that there exists a clear correlation between the grain-size and the texture of the amorphous silicon to the electrochemical performance of half-cells.en621journal article