Comparison of ruthenium composites with thermally reduced graphene and activated carbon for supercapacitor applications (original) (raw)
2017, Journal of Materials Science: Materials in Electronics
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Exfoliated graphite–ruthenium oxide composite electrodes for electrochemical supercapacitors
Journal of Power Sources, 2008
The performance of exfoliated graphite (EG)-ruthenium oxide (RuO x ) composites as binderless electrodes is evaluated for electrochemical capacitors (ECs). A composite of EG-RuO x is prepared by a modified sol-gel process. The material is characterized using X-ray diffraction and microscopy. Electrochemical capacitors with the composite electrodes in the presence of aqueous sulfuric acid (H 2 SO 4 ) electrolyte are evaluated using voltammetry, impedance and charge-discharge studies. Cyclic voltammetry reveals very stable current-voltage behaviour up to several thousands of cycles, as well as high specific capacitances, e.g., a few hundreds of farads per gram for the composite that contains 16.5 wt.% RuO x .
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