Carbon nanomaterials derived from Malaysia’s highway road asphalt waste as electrode for supercapacitor

• Main Authors: Mohd Abid, Mohd Asyadi Azam, Raja Seman, Raja Noor Amalina, Zulkifli, Mohd Fadzil, Mohamed, Mohd Ambri, Ani, Mohd Hanafi
• Format: Article
• Language: English; English
• Published: University of Mohammed Premier, Oujda Morocco 2018
• Subjects: T Technology (General); TE175 Highway design. Interchanges and intersections
• Online Access: http://irep.iium.edu.my/71180/1/71180_Carbon%20nanomaterials%20derived%20from%20Malaysia%E2%80%99s%20highway.pdf; http://irep.iium.edu.my/71180/7/71180_Carbon%20nanomaterials%20derived%20from%20Malaysia%E2%80%99s%20highway%20road_googlescholar.pdf; http://irep.iium.edu.my/71180/; https://www.jmaterenvironsci.com/Document/vol9/vol9_N7/237-JMES-3735-Azam.pdf

Developing cost-effective and environmental friendly electrode material for supercapacitor is critical for energy storage technologies. The fabrication of asphalt waste carbon (AWC) combined with multi-walled carbon nanotube (MWCNT) supercapacitor electrode was performed by using conventional slurry technique. The AWC/MWCNT composite electrode was compared to that of non-mixed AWC electrode. For non-mixed AWC electrode, the specific gravimetric capacitance (Csp) was 1.93 F g-1 at 1 mV s-1 scan rate and the Csp obtained for AWC/MWCNT electrode was 62.94 F g-1. From charge-discharge analysis, the AWC/MWCNT electrode showed nearly symmetrical triangular shapes at different current densities (0.5 to 15 A g-1). It was also clear that the Csp remains about 80% of the initial capacitance after 800 cycles at 15 A g-1 current density, indicating that AWC/MWCNT electrode possessed good ion accessibility and cycling stability.