Fabrication of CoWO4/PANI composite as electrode material for energy storage applications

The fabrication of novel electrochemical devices with salient structural features, morphology and porosity is necessary to enhance their efficiency and shelf life. The construction of electrodes using binary metal oxides (BMOs) with conducting polymers (CPs) is noted to be one of the promising strategies to enhance the electrochemical performance of supercapacitors (SCs). Herein, we reported an in-situ chemical oxidative polymerization synthetic route to prepare CoWO4/PANI composite. The structure, crystalline phase, surface morphology and electrochemical (EC) attributes of the as-synthesized material were studied by different spectral and analytical techniques. The cloud-like CoWO4/PANI electrode material exhibited a maximum specific capacitance (Csp) of 653 Fg-1 at the scan rate of 5 mVs−1. The prominent cycling stability of CoWO4/PANI with 93.3% retention even after 5000 cycles at the current density of 1 Ag-1 was also observed. The study revealed cost-effective synthesis and fabrication of high-performance CoWO4/PANI electrode material for energy storage devices. [Display omitted] •CoWO4/PANI was as-synthesized via In-situ chemical oxidative polymerization route.•CoWO4/PANI showed pseudocapacitive behaviour.•CoWO4/PANI exhibited a high specific capacitance of 653 Fg−1 at the scan rate of 5 mVs−1.•The long-term capacitance retention of 93.3% was achieved even after 5000 cycles.