PMo۱۲/PANI Supported on Activated Carbon Derived from Waste TirePyrolysis as Electrode Material in Supercapacitor

Utilization of renewable sources and waste conversion processes is increasing in the worldbecause of global warming. An estimated of ۴ billion waste tire (WT) are currently in landfills andstockpiles worldwide. Scince waste tires do not decompose easily due to their cross-sectionalstructure and the presence of various additives. The best economic and environmental solutionwould be to recycle used tires and use them as materials for value-added products [۱]. There areseveral methods for recycling worn tires. Pyrolysis as one of the most important methods is athermal decomposition process performed at high temperature in an inert atmosphere [۲]. Solidresidues from tire pyrolysis are often called coal or carbon black. Black carbon is a carboncompound with a carbon content higher than ۸۰ %wt, but the surface area of the resulting carbonis not large enough and its porosity is low, so in order to be used as an adsorbent and energystorage, it must be activated in certain ways. Activation of carbon takes place in two ways: physicalactivation and chemical activation. Tire-derived activated carbon have numerous advantage suchas a high surface area with porosity. Thus, this paves the way for the recycling of waste tires, andthis porous activated carbon can be used as an adsorbent as well as promising materials as supportin various electrochemical applications. Supercapacitors (SCs), also known as electrochemicalcapacitors, are some of the most promising energy storage devices due to their higher powerdensity, longer lifespan, and better safety tolerance than batteries. In recent years, the design andfabrication of supercapacitors have become an important research area due to their high powerdensity, relatively high energy density and long cycle life in power source applications. Generalelectrode materials mainly involve carbon materials, transition metal oxides and conductivepolymer materials. However, relatively low energy density of carbon materials often limits theirlarge-scale application. Consequently, transition metal oxides and conductive polymer materialshave attracted much more attention and have been extensively employed as electrode materialsowing to their redox pseudo-capacitance. The purpose of this research is to prepare activatedcarbon with high surface area and porosity from the pyrolysis of domestic car tire in a chemicalmethode. Then, by depositing polyoxometalates and conductive polymers on activated carbon,composites will be prepared which used as electrodes in supercapacitors. The capacitance of theseelectrodes will be examined by electrochemical methods.

کلیدواژه ها:

Waste Tire ، Pyrolysis ، Activated Carbon ، Supercapacitor.