Preparation Of Carbon Materials Based On Polyaniline And Waste Water Filter And Their Supercapacitor Performances

In order to reduce fossil fuel consumption and greenhouse gas emissions, the use of renewable energy power production is an important way to realize sustainable development of our society. Lithium ion battery and supercapacitor has the very important position in the new energy system, they can make the energy storage and processing more effective and convenient. Relative to the lithium ion battery,supercapacitor has a relatively high power density. From the battery materials, many researches focus on environmentally harmless and efficient materials as much as possible in order to reduce environmental pollutions and improve the working efficiency of the material, up to now, the low price of porous carbon materials are the most widely commercialized electrode materials. Researchers do a lot of researches on it.In this thesis, first of all, from the perspective of environmental protection and the harmless materials to the environment, we let aniline polymerize on the surface of graphite oxide to generate a certain morphology of polyaniline, and after the freeze drying, we get the composite of graphite oxide/polyaniline ?GO/PANI? materials, and then followed by carbonization, the resulting carbon materials will kept the skeleton of the un-carbonated polyaniline,which have a certain appearance. After observing the characterization of the morphology of the composite, then make the materials as electrodes and assemble them as the supercapacitor to test the electrochemicalperformances.At the same time, from the perspective of recycling waste materials, protecting environment and resources, we study waste materials - waste filter carbon from water purifier, to see if it has the ability to work as the supercapacitor's electrodes anddetermine whether it is necessary to recycle waste water purifier. After simply dry the waste filter carbon of the purifier, we heat it under the inert gases, followed by the activation process. After getting the basic characterization information of all the samples,we make them as the supercapacitor's electrodes and test their electrochemical properties. Analyzing the data, we find that the activated sample has considerable specific capacitance of 122.8 F/g at the current density of 1 A/g, and a relatively stable cycle performance. Besides,the activated sample has a high energy density of 32.9 Wh/kg in 1 M Na₂SO₄ electrolyte system. The results show that the activated sample has excellent electrochemical performance.