Хімічно активоване буре вугілля як електроди для суперконденсаторів з органічним електролітом
With a view of designing novel materials for electric double layer capacitors, activated carbons prepared by thermolysis of Alexandriya brown coal with KOH at various KOH/coal ratios (RКОН -0,2-1,0 g/g) were studied. Materials produced at RКОН >0,5 g/g were shown to have satisfactory elec...
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| Datum: | 2009 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Russisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2009
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/372 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
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Surface| Zusammenfassung: | With a view of designing novel materials for electric double layer capacitors, activated carbons prepared by thermolysis of Alexandriya brown coal with KOH at various KOH/coal ratios (RКОН -0,2-1,0 g/g) were studied. Materials produced at RКОН >0,5 g/g were shown to have satisfactory electrode characteristics in organic-based capacitors within the electrolyte voltage window (tetraethylammonium tetrqfluoroborate, voltages up ~3 V). It was established that the maximum gravimetric capacitance is exhibited by the material prepared at RКОН =1 g/g- The sample prepared at RКОН =0,5 g/g demonstrated the minimum capacitance loss on increasing the current density. Differences in the behavior of samples were explained by different portions of pores less than 1 nm in diameter. |
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