Makale detayı · 2019
The performance of sulphur doped activated carbon supercapacitors prepared from waste tea
Dergi
Environmental TechnologyISSN 0959-3330
ISSN kaydı başka bir dergiye işaret ediyor; ad YÖKSİS kaydından.
- Yıl
- 2019
- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı Environmental Technology
- Katalog eşleşmesi (ISSN) Environmental Technology (United Kingdom)
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
OpenAlex · İngilizce
The pore structure, high surface area and good conductivity are the key properties for the electrochemical double layer based supercapacitors. The activated carbons were produced from the waste tea, utilising microwave pretreatment with H3PO4 and activation at 450°C. Sodium thiosulfate pentahydrate (Na2S2O3·5H2O) was used as sulphur doping agent at 800°C to enhance conductivity of the activated carbons. Supercapacitor electrodes were prepared from both the activated carbon (WTAC) and sulphur doped activated carbon (WTAC-S) samples and the electrochemical performances were tested in the presence of 6 M KOH and 1 M H2SO4 as electrolytes. The activated carbon samples were characterised by Brunauer–Emmett–Teller (BET) surface area, Scanning Electron Microscopy/Energy Dispersive X-Ray Spectroscopy (SEM/EDS) and Fourier Transform Infrared Spectroscopy (FTIR) analysis techniques. The electrochemical performance analyses were performed by galvanostatic charge–discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) methods. The specific capacitance values of the WTAC and WTAC-S samples under the 1 A g−1 current density were found to be 89.3, 144.7 F g−1 for KOH electrolyte and 73.8 and 101.9 F g−1 for H2SO4 electrolyte, respectively. The results show that the sulphur doping process enhances the electrochemical performance of activated carbon samples.
Konular
Atıflar
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141 atıf
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Yerel katalogda bu makaleye atıf yapan 27 yayın (OpenAlex referans eşleşmesi; tam dünya listesi değildir).
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