Author/Authors :
azam, m.a. universiti teknikal malaysia melaka - fakulti kejuruteraan pembuatan - carbon research technology research group, Melaka, Malaysia , seman, r.n.a.r. universiti teknikal malaysia melaka - fakulti kejuruteraan pembuatan - carbon research technology research group, Melaka, Malaysia , zulkifli, m.f. universiti teknikal malaysia melaka - fakulti kejuruteraan pembuatan - carbon research technology research group, Melaka, Malaysia , mohamed, m.a. universiti kebangsaan malaysia - institute of microengineering and nanoelectronics, Bangi, Malaysia , ani, m.h. international islamic university malaysia - faculty of engineering, Kuala Lumpur, Malaysia
Abstract :
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.
Keywords :
Asphalt waste carbon , Multi , walled carbon nanotube , Chemical activation , supercapacitor
