α-Fe2O3 thin film on stainless steel mesh: A flexible electrode for supercapacitor

Abstract

Abstract Light and flexible energy storage devices have taken great attention from the industrial point of view. We report for the first time the deposition of α-Fe 2 O 3 on thin, light weight and flexible stainless steel mesh substrate. Liquid phase deposition (LPD) which is simple, inexpensive and additive/binder free method is used for deposition. Supercapacitive performance of α-Fe 2 O 3 thin films deposited on stainless steel mesh are studied in 0.5\u202fM Na 2 SO 3 electrolyte. The highest specific capacitance obtained is 960\u202fF\u202fg −1 at 4\u202fmA\u202fcm −2 from charge-discharge curves. The supercapacitive performance is significantly improved when α-Fe 2 O 3 thin films are deposited on mesh substrate as compared to flat substrate.