Compositing of MIL-101(Fe) with reduced graphene oxide and polyaniline for capacitive energy storage
Materials Chemistry and Physics, cilt.278, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 278
- Basım Tarihi: 2022
- Doi Numarası: 10.1016/j.matchemphys.2021.125641
- Dergi Adı: Materials Chemistry and Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
- Anahtar Kelimeler: MIL-101(Fe), Nanocomposites, Supercapacitor
- Kırklareli Üniversitesi Adresli: Evet
Özet
Metal−organic frameworks (MOFs) have attracted attention for various applications in electrochemistry due to their high porosity and potential high charge storage abilities. New MIL-101(Fe)-based nanocomposite materials were synthesized with reduced graphene oxide (rGO) and polyaniline (PANI). The prepared composites were characterized by various techniques. The electrochemical properties of the materials were investigated in 1 M Na2SO4 and 2 M KOH as electrolytes. To the best of our knowledge, the capacitive energy storage properties of rGO/MIL-101(Fe)/PANI as a supercapacitor electrode is reported for the first time. Among the prepared compounds, rGO/MIL-101(Fe) in alkaline electrolyte exhibited the highest specific capacitance of 250.63 F/g at 0.5 A/g which has very low charge transfer resistance of 0.141Ω. Compared to rGO/MIL-101(Fe), rGO/MIL-101(Fe)/PANI exhibited higher capacitance in neutral electrolyte, while showed lower capacitance in alkaline electrolyte. The capacitive properties of MIL-101(Fe) based composite electrodes were found to greatly depend on charge transfer processes, obtained by detailed analyses and EIS measurements.