Impact of CTAB, a cationic surfactant, on the electrochemical performance of NiWO4 for enhanced supercapacitor performance

Abstract

In search of efficient electrode material with good redox sites, better wettability, high-rate transfer and rate capability, here we adapted a linear template method like by adding CTAB as surfactant. Transition metal tungstate is a promising electrode material for supercapacitor devices because of its exceptional electrical conductivity and electrochemical property. This work deals with the effect of surfactant on their structure, morphology and electrochemical properties of the material, elaborately. Through the physiochemical characterization, it is observed that morphology of NiWO₄ is stable and significantly altered by different ratio of templating agent. NiWO₄ with 0.03 M of CTAB as surfactant delivered a specific capacitance of about 958 F/g at a current density of 2 A/g, respectively with low-charge transfer resistance of 5.6 Ω.