Effect of synthesis methods on the surface and electrochemical characteristics of metal oxide/activated carbon composites for supercapacitor applications

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dc.contributor.authorYumak, Tugrul
dc.contributor.authorBragg, Dustin
dc.contributor.authorSabolsky, Edward M.
dc.date.accessioned2025-03-23T19:41:59Z
dc.date.available2025-03-23T19:41:59Z
dc.date.issued2019
dc.departmentSinop Üniversitesi
dc.description.abstractMnO2/Activated Carbon (cAC) and NiO/cAC composites were synthesized by both hydrothermal and precipitation methods in order to investigate the effect of preparation methods on the surface chemistry and porous structure of composite-based electrodes and electrochemical properties. X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), N-2 physisorption, Raman spectroscopy and scanning electron microscopy (SEM) techniques were used to investigate the surface chemistry, chemical composition, pore characteristics and surface morphology of the synthesized composites. Synthesized composites were used as electrode materials within button cell supercapacitors. It was found that hydrothermal treatment to deposit the nano-oxides led to an increase in specific surface area, also this treatment resulted in oxygen-containing surface functionalities, which led to an improvement in electrochemical properties. Although the metal oxide loading caused a decrease in the specific surface area, the pseudocapacitive effect of MnO2 and NiO, and oxygen-containing surface functionalities increased the specific capacitance. MnO2 and NiO loading led to a 50% and 150% increase in specific capacitance, respectively. NiO/cAC samples obtained by precipitation method showed a higher specific capacitance compared to hydrothermally synthesized NiO/cAC. The metal oxide loading method has great influence on the surface chemistry, surface area and the resulting electrochemical performance of activated carbon-based fabricated supercapacitors.
dc.description.sponsorshipWest Virginia University (WVU) Energy Institute through the O'Brien Energy Research Fund; Scientific and Technological Research Council of Turkey (TUBITAK) Postdoctoral Research Program [BIDEB-2219]
dc.description.sponsorshipThis research has funded by West Virginia University (WVU) Energy Institute through the O'Brien Energy Research Fund. Dr. Yumak acknowledges the financial support from the Scientific and Technological Research Council of Turkey (TUBITAK) BIDEB-2219 Postdoctoral Research Program. The authors would like to thank Dr. Kaushlendra Singh (WVU) and Dr. Engin Ciftyurek (WVU) for their valuable contribution to the project and sharing their previous results. We also thank Kathy Sabolsky (WVU) and Dr. Christina Wildfire (NETL, DOE) for their guidance with the experimental setup and lab work. We also acknowledge the use of WVU Shared Research Facilities for materials characterization. The authors also acknowledge Dr. Qiang Wang (WVU) and Dr. Marcela Ridegolo (WVU) for their assistance.
dc.identifier.doi10.1016/j.apsusc.2018.09.079
dc.identifier.endpage993
dc.identifier.issn0169-4332
dc.identifier.issn1873-5584
dc.identifier.scopus2-s2.0-85056819446
dc.identifier.scopusqualityQ1
dc.identifier.startpage983
dc.identifier.urihttps://doi.org/10.1016/j.apsusc.2018.09.079
dc.identifier.urihttps://hdl.handle.net/11486/6694
dc.identifier.volume469
dc.identifier.wosWOS:000454617200113
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofApplied Surface Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectMetal oxide/activated carbon composites
dc.subjectHydrothermal synthesis
dc.subjectSupercapacitor fabrication
dc.subjectActivated carbon based supercapacitors
dc.titleEffect of synthesis methods on the surface and electrochemical characteristics of metal oxide/activated carbon composites for supercapacitor applications
dc.typeArticle

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