2026-10-19T01:07:05Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/requestoai:ebyu-rdlopen.rawdatalibrary.net:ebyu/137462026-10-18T20:39:00Zopenairedrivercom_ebyu_10000col_ebyu_10001The use of α-MnOOH nanosheets as battery-type electrode for supercapacitor applicationsYesilbag, Yasar OzkanTuzluca, Fatma NurErtugrul, MehmetCyclic voltammetryElectric dischargesElectrochemical impedance spectroscopyElectrodesElectrolytesField emission microscopesHydrothermal synthesisManganeseManganese oxideNanosheetsPotassium hydroxideSecondary batteriesSupercapacitorX ray photoelectron spectroscopyCrystal structure and morphologyDiffraction fieldsEnergy dispersionsField emission scanning electron microscopyMolarityNickel foamSpecific capacitiesSupercapacitor applicationSynthesisedX- ray diffractionsScanning electron microscopyThis study investigated MnOOH nanosheets, which were synthesized at different manganese molarities on 3D-nickel foam by hydrothermal synthesis, for use as battery-type electrodes. The crystal structures and morphologies of the MnOOH nanosheets were determined by using X-ray diffraction, field emission scanning electron microscopy, energy dispersion X-ray spectroscopy, Raman Spectroscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry, galvanostatic charge discharge and electrochemical impedance spectroscopy analysis of the MnOOH nanosheets were performed in 1 M of a KOH aqueous electrolyte solution. The specific capacity values obtained from GCD measurements taken at a current density of 0.5 A g-1 from samples called Mn-0.2, Mn-0.5, Mn-1 and Mn-2-according to their manganese molarities-were 230, 557, 766 and 493 C g-1, respectively. Furthermore, the Mn-1 sample, which had the highest specific capacitance value, showed excellent cycle stability by retaining 79% of the initial specific capacity after 10000 charge-discharge cycles. © Springer Science+Business Media, LLC, part of Springer Nature 2019.Springer2019Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/13746https://doi.org/10.1007/s10854-019-01135-00957-4522enJournal of Materials Science: Materials in Electronicsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/13746