Chemical synthesis of spinel cobalt ferrite (CoFe2O4) nano-flakes for supercapacitor application

✍ Scribed by V.S. Kumbhar; A.D. Jagadale; N.M. Shinde; C.D. Lokhande

• Book ID: 116245400
• Publisher: Elsevier Science
• Year: 2012
• Tongue: English
• Weight: 700 KB
• Volume: 259
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2012.06.034

✦ Synopsis

The present paper reveals the formation of cobalt ferrite (CoFe2O4) thin film on stainless steel substrate by simple chemical route from an alkaline bath containing Co2+ and Fe2+ ions. The films are characterised for structural, surface morphological and FT-IR properties. The XRD and FT-IR studies revealed formation of single phase of CoFe2O4. The formation of nano-flakes-like morphology is observed from scanning electron microscope. The electrochemical behaviour of CoFe2O4 film has been studied using cyclic voltammetry in 1M NaOH electrolyte. The maximum specific capacitance of 366Fg−1 is obtained at the scan rate of 5mVs−1. Using AC impedance technique equivalent series resistance (ESR) value is found to be 1.1Ω.