Thorough Characterization of Sputtered CuO Thin Films Used as Conversion Material Electrodes for Lithium Batteries.

Brigitte Pecquenard (1) , Frédéric Le Cras (2) , Delphine Poinot (1, 2) , Olivier Sicardy (2) , Jean-Pierre Manaud (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LITEN - Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux

CuO thin films were prepared by radio frequency magnetron sputtering using a copper target in a (Ar + O2) reactive mixture. Different sputtering parameters were varied including oxygen flow rate, total pressure, target-substrate distance, substrate temperature and target orientation. As expected, the thin film chemical composition is strongly dependent on the oxygen flow rate. CuO thin films having a good electronic conductivity (9.3 × 10(-1) S*cm(-1)) were obtained with an oxygen concentration of 12%. The texture and the columnar growth are amplified when the target is tilted. Preliminary electrochemical results highlight that CuO thin film performances in lithium systems are tightly related to their morphology and structure.

Domaines: Matériaux

Brigitte Pecquenard, Frédéric Le Cras, Delphine Poinot, Olivier Sicardy, Jean-Pierre Manaud. Thorough Characterization of Sputtered CuO Thin Films Used as Conversion Material Electrodes for Lithium Batteries.. ACS Applied Materials & Interfaces, 2014, 6 (5), pp.3413-3420. ⟨10.1021/am4055386⟩. ⟨hal-00960000⟩