Electrochemical properties of tungsten oxysulphide thin films as positive electrodes for lithium microbatteries

Isabelle Martin-Litas (1) , Philippe Vinatier (1) , Alain Levasseur (1) , Jean-Charles Dupin (2, 3) , Danielle Gonbeau (2)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 LCTPCM - Laboratoire de Chimie théorique et Physico-chimie moléculaire
3 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

Several WOySz tungsten oxysulphide thin films were tested as positive electrodes for lithium microbatteries. The amorphous WO1×05S2 thin film was found very promising. A capacity decrease occurred during the first few cycles, after which the films were able to intercalate reversibly up to 1×1 lithium ion per formula unit under high regime (75 mA/cm2)...

Mots clés: Lithium microbattery; Tungsten oxysulphide; Thin films; X-ray spectroscopy; Sputtering

Domaines: Matériaux

Isabelle Martin-Litas, Philippe Vinatier, Alain Levasseur, Jean-Charles Dupin, Danielle Gonbeau. Electrochemical properties of tungsten oxysulphide thin films as positive electrodes for lithium microbatteries. Bulletin of Materials Science, 2003, 26 (7), pp.673-681. ⟨hal-00169102⟩