Killi, HalimeTokgöz, Seyit RızaÇarpan, Mürüvvet Arslan2024-09-112024-09-112022-08-30https://doi.org/10.1016/j.mtcomm.2022.104263https://hdl.handle.net/11452/44582The present work reports new findings on the electrical energy storage capabilities of WO3/Ni and Co@WO3/Ni electrodes produced via galvanostatic electrochemical deposition. The paper also describes a novel process for cleaning Ni foam, which has significant effect on the electrode's charge accumulation properties. Electro-chemical measurements in an aqueous solution are performed to compare the supercapacitive behavior of the WO3/Ni foam and Co@WO3/Ni foam. The specific capacitance of the former electrode increases from 492.8 to 977.4 F g-1 because of Co adding into tungsten oxide. Furthermore, the former has 42.5% capacitance retention after 7000 charge-discharge cycles, while the latter has 83.7% owing to the Co loading. The specific energies are respectively calculated to be 64.27 Wh kg-1 and 64.44 Wh kg- 1 for the pure WO3/Ni and Co@WO3/Ni elec-trodes. The specific powers are 3761.49 W kg- 1 and 3303.90 W kg- 1 for the former and latter electrodes. Ac-cording to the findings, adding Co to the pure WO3/Ni electrode increases its electrochemical and supercapacitor capabilities, allowing it to be used in energy storage devices.eninfo:eu-repo/semantics/closedAccessSupercapacitorPerformanceWo3NanotubesGrapheneNanostructuresCowo4Electrochemical depositionCobaltTungsten oxideComposite materialEnergy storageScience & technologyTechnologyMaterials science, multidisciplinaryMaterials scienceArticle0008769366000023310.1016/j.mtcomm.2022.104263